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VCOMB021 VoiceCom System User Manual

1. to PC for downloading Communication Line 2 connect up to 31 VAA units mn of voice messages IS Power o a sa c o Supply 2 NER mu a Sm o O Se o Se EN oon TEE V aped RE Di iia Ea piis M ge Sus Sls Mi da coda Mi LN UUU UUU UUU d IN o Q o o o o Modbus to PLC via RS485 IS EXT KEYPAD IS LINE 2 I F DATA COMMS Optional External VCA Keypad Sn S DI DAA IS Power S S N E S LS Lue St sta VCA Digital Outputs to PLC Input S KO S SN c E S E PLC or LAS AMPCONTROL S SLE similar Y 2 VCA Voice Q GS l To site telephone Q l Coms IS N A Controller system via Audio alla St sp Barrier LS Earth 1 Ex ia WILL Sit gue AUS Ex S S Z 03 300 O 03 3880X I Q S OI Sp VCA Digital Inputs from PLC output LAS St ISTE or other type of switch contacts lt S S E S Didicated LUS S H pera I S Earth LAS Earth St Sp S S WI SJ Ml S LS S LINE 1 I F RELAY PWR Communication Line 1 connect up fo 31 VAA units L TOVAC Supply In o e o 9 o e o c ly J Ala NE 24004 A eas En o ji Earth r1 m
2. IS EXT KPD IS LINE I F COMMS DIGITAL I O iQ S S com O VET ova aes Toro S KP8 Eo J Audio 2 ovas OO TSE KP7 JET JS Call2 485 SILO E vos KPe ES JS Vine 2 SUE Eos Kes E11 JS ova 22M EJ Do2 KPA ITS J v ps2 ov 232 o D SA Dot Ke3 S UNE 2 oss ax OA OE Dov KP2 E1 gt AMPCONTROL OI CI LET Pene KP1 Oi S T usos l Pe 219 S LE PSRt G OM SO S DI2 RA 11 7 Controller Ll S iu Y T Di LS EARTH AUDIO ME L asci f fE fpo U AUS EX AS S49 0 C US e i NO SI PET OD A TS TUNE 1 wea SFE le Di7 Jovi com PIO SE ne M Audio 1 not o O Eos IET Call 1 net Fey E v E41 com FS TT pia HE ova EARTH 110Vac jim Sff nn at EARS PPS L 110vac Sy S l gt RELAY PWR Corner Mounting Figure 2 VCA VoiceCom Controller E08588 Front Side and Rear VCA Connections and Wiring This section covers VCA terminal functions and wiring All VCA connections are made at the rear of the VCA unit VAA unit wiring can be found later in this manual The VCA has eight terminal headers and is supplied
3. com LOIS TS ova 485 S ELI amp KP8 1 E Audio 2 0v485 SO SIE av KP7 L 14 EAS cama 485 HE DO4 Ke EAS EHIS Y Line 2 SrA SIE pos PSI EAS Jove 232 TX 7 CSI HET DO2 ARIS OS V PS2 0v232 EET S Do Ke ET S LOlluNE2 232 RX SILO Sov KP2 TT S AMPCONTROL WI S LLTIPSR2 ea ue LIST Of Psr T A j C S m PSC2 S H S 1 gt SIE SIEM eM mo Ex tal I Sa S Er prO 2 AUS Ex iD Sifa soe 2 NC NO Sp Lor OS o com2 tE pL ple L Audio 1 Not SEEN S ET DIS TAS Call 1 NC1 S3 ELI SS ELIT DM 13 0 Line COM S SF T DIS DOS mi EARTH 110Vac o 0 DD EAS VPS1 nowa GIELI SS p LI Dn 1 iiio Figure 3 ee 3 Digital Inputs The controller has 14 digital inputs labelled DI1 to 12 PSR1 and PSR2 A 24VDC supply is required to assert these inputs The negative side of this supply is connected to the OV DI terminal The positive side of the supply is applied to the digital input as required Inputs 1 to 12 are used for message initiation and are edge triggered The voice message will not stop when the 24VDC is removed nor will the message repeat if the 24VDC is held These inputs will remain active for the duration of the voice message Inputs PSR1 and PSR2 are used for pre start alarm init
4. un VOICECOM USER MANUAL ISSUE 4 Certification of ape DE Rok REM NM Er C IE IRIS AS Administered by Standards Australia Quality Assurance Services Ibis certificate is granted subject ta tbe conditions as set aut tu Standards Australia Miscellaneous Publication MP 69 aud the Procedures Doc Q7 134 af the scheme The electrical equipment and any acceptable variation to it specified in tbe schedule to this certificate and the identified documents was found to comply with tbe following standards AS NZS 60079 0 2000 Electrical equipment for explosive atmospheres Part 0 General requirements incorporating Amendment 1 AS NZS 60079 11 2000 Electrical equipment for explosive atmospheres Part 11 Intrinsic Safety 1 incorporating Amendment 1 This certificate does not ensure compliance with electrical safety requirements and performance other than those included in the Standards listed above The equipment listed bas successfully met the examination and test requirements as recorded in Test Report No TestSafe 1R23611 E File Reference TESSA 2002 021310 jiet for and on bebalf of issuing authority aboratory Systems Manager TestSafe Australia Position 2 04 2003 GS M Pare E aa RERUMS Date nf issue Ex 03 3880X This certificate and schedule may not be reproduced except in full This certificate ts not transferable and remains tbe property of Standards Australia Quality Assu
5. gt eee heck ie 6 Digia OUTPUT pol PO 2 PO Do OO JON O 0 o 2 3 4 5 Figure 24 Digital Outputs Status Page 1 Menu level 4 Digital output 3 state Digital output 1 state 5 Digital output 4 state 3 Digital output 2 state o o unasserted open o o asserted closed VOICECOM USER MANUAL ISSUE 4 DO1 LINE 1 LINE 2 alarm This output is unasserted open when LINE 1 and LINE 2 are healthy The output is asserted if e The number of VAAs the VCA can communicate with does not match the number of VAAs meant to be online The VAAs online setting is one of the Configuration pages found on menu level 6 More information on this setting can be found later in this chapter e There is a VAA address clash Check the VAA addressing DO2 asserted for 5 seconds when a VAA FUNC key is pressed This output can be used to trigger an external event by pressing the FUNC button on any VAA connected to the communication line This output flag is also available through Modbus DO3 asserted when a voice message is playing This output provides a hardwired indication that a voice message is playing This output flag is also available through Modbus DO4 no function Digital Inputs Page 5 D tia S7 oo Poko Lo or 20 o 3076 4076 Bo oa om 190 oso Oc oM 6G Bee 00 on Aa Figure 25 Digital Inputs Status Page 1 Menu level 4 Digital Inputs 1 2 3 and 4 state PSR1 input state LINE 1
6. Figure 6 I S keypad interface wiring to VCA Remote Keypad Module E08985 NOTE The l S power supply connected to LINE 1 or LINE 2 can be used to for the VCA I S Keypad Interface VOICECOM USER MANUAL ISSUE 4 l S Audio Interface The intrinsically safe audio interface allows the VoiceCom System to be connected to a site wide communication or telephone network All audio signals originating from the VoiceCom System such as voice messages and VAA to VAA communication are output from the audio interface Likewise any audio signal input to the interface is broadcast over the VoiceCom System The VoiceCom Audio Barrier p n E09441 is required in order to connect the VCA I S Audio Interface to an intrinsically safe communication network The VoiceCom Audio Barrier provides a number of connection options such as allowing two independent VoiceCom communication lines to be connected together This allows the audio from one VoiceCom system to be broadcast on the other system and vice versa Note however that this does not enable a pre start alarm to sound on the other VoiceCom system or the extension of the digital communication Refer to Appendix C for more information on connecting the VoiceCom system to other communication systems Table 8 I S Audio Interface Connections Terminal Function AUDIO Audio line positive AUDIO Audio line negative l S Earth The intrinsically safe earth terminals are used to co
7. i d E m i l E Us l L N E 1 i JEAN M l i KON KC E V4 RR Oman VU XY omues V mua Rr cw a LE oem a e a E M noc ET de Oooo JODO m a LILI DOD ODO o x o O m o o o Oo o O Adr Adr mem Adr Adr Adr Pi meum 1 14 15 16 17 31 Figure 45 VAA Addressing Single Line 4 Once all the VAAs have been correctly addressed a block symbol for each VAA will appear on the Line Status page for that line If two VAAs have been given the same address a C symbol will appear at the address where the NUNEE HERREN AAA clash exists Re check the addressing if necessary 2 Line 1 20 VAA s PSW RQo o OPo o 5 Ensure that all the VAAs are online Volume Microphone Gain and Audio Threshold The procedure for configuring these settings can be found in the VCA Operation chapter under the section VAA User Programmable Settings These settings can also be adjusted at the VAA The procedure for changing settings at the VAA can be found in the VAA Operation chapter under the section VAA Setup Mode The default settings should be adequate These are e Volume 3 maximum Volume level 3 may be too loud for certain locations e Mic Gain H high The microphone gain should be set to L low in areas with a high level of background noise e Audio Threshold 2 It is possible that noise from other electrical and electronic systems could be picked up by the VAAs Depending on the level of this interference the VAA may amplify the noise If this
8. 30mA to 180mA in 10mA steps Threshold Line 1 Under Voltage Alarm None Level Line 2 Number of VAA s to 31 or None to be Oniine Line anbieten Pre start Warning to Tone Line 2 Pre start OK 30mA to 180mA in 10mA steps Current Threshold Line 2 Under Voltage Alarm None Level Modbus Communication Baud 1200 Baud Even Odd No ELIOLINLI Rate and Parit Parl a ELIOLINEI ELJOLINLI 2400 Baud Even Odd No Par 4800 Baud Even Odd No ELJOLINLI Par EOoONO 9600 Baud Even Odd No Par 19k2 Baud Even Odd No Par VOICECOM USER MANUAL ISSUE 4 Modbus Communication Slave 1 to 31 Address Message Bank Serial Baud 28k8bps Rate 57k6bps LTSEzDOS 230k4bps VOICECOM USER MANUAL ISSUE 4 APPENDIX B Modbus The VCA is equipped with an RS 485 communication port that allows point to point or multi drop connection to a control or SCADA system The protocol used by the VCA is Modbus RTU Refer to the Installation and Wiring chapter of this manual for more information on wiring the VCA s RS 485 port Configuration The following communication parameters must be set before using the RS 485 port e Baud rate e Parity e Modbus slave address Refer to the Configuration section of the VCA Operation chapter of this manual for more information on configuring the Modbus communication parameters VCA Modbus Read and Write Functions The following functions can be performed via the Modbu
9. ent gt esc The value that appears inthe can now be changed Pressing the key will take the display out of the setting edit mode and any changes will not be saved Use the keys to change the value as required Press the ENTER key again to save the setting The second line of the display will show Saving Value gt gt gt gt for a brief moment while the setting is saved Once the new value has been saved the display will go return to its normal state VOICECOM USER MANUAL ISSUE 4 CHAPTER 4 VAA Operation The VoiceCom Amplifier version A or VAA is the field communications unit of the VoiceCom system lt consists of two parts 1 VAA amplifier module 2 VAA battery pack NOTE The battery pack must be connected to the VAA amplifier module in order for the VAA to function Figure 26 Amplifier Module with Battery Pack VAA Amplifier Module VAA Features 1 8 character LCD 5 Speaker connection header for two speakers 2 Sealed microphone 6 Battery pack connection header 3 4key membrane keypad 7 Communication line connection header 4 VAA serial number VOICECOM USER MANUAL ISSUE 4 O 0 5 0 Figure 27 VAA Amplifier Module Front and Back The LCD 1 1 VAA operational parameters cycles between 3 Digital comms heartbeat status indicator bar L U line volts B U battery volts and B I battery current 2 Amplifier on status indicator bar 4 VAA data polling indicator bar Display
10. set level to prevent permanent battery cell damage VOICECOM USER MANUAL ISSUE 4 CHAPTER 2 Installation This section overs the installation of the VCA and VAA The various system wiring options are explained as well as the functions of the VCA and VAA connections Appendix E lists drawings relevant to the installation and operation of the VoiceCom system VCA Physical installation The controller can only be installed in the safe area The required panel cut out is 135mm x 135mm See drawing VCOM A 040 for a panel cut out template with dimensions To ensure that the installation meets the required IP65 rating the gasket must be fitted between the controller s escutcheon and the panel The controller is supplied with five mounting brackets each with a M5 x 40mm Phillips head screw These brackets fitted as shown in Figure 2 below The fifth bracket is supplied as a spare
11. 4 Press the SPEAK button to save the new settings If the VAA times out of set up mode any changes will not be saved MODE CALL EXCHANGE VOLUME THRE Soup CHARGE VURRENT ADDNESS VOICECOM USER MANUAL ISSUE 4 Table 14 VAA Programmable Settings MD VAA Mode VCA or If connected to a VoiceCom system this setting should be set to VCA If set to the VAA will not respond to VCA digital communication polling and will not appear online VOL Volume Gain LO to L3 and HO to The L H sets the sensitivity level and the number 0 to 3 sets the volume level In areas of high background noise set the sensitivity to L Low This requires the use to speak in a louder tone closer to the microphone Otherwise set the sensitivity to H High THRS Threshold 0 to 7 The threshold sets the audio level on the communication required to turn the amplifier on and sound from the speakers 0 is the lowest level where by only a very low level of audio will turn on the amplifier 7 is the highest level Charging Current 5 to 40 in mA The charging current setting is the amount of current the VAA will draw from the communication line to charge its battery The charging current requires careful consideration as it depends on the output of the l S power supply used the number of VAAs connected to the communication line and distance of the VAA from the power supply VAA Address 1 to 31 Only 31 VAAs can be connected to each commu
12. 1345Hz every 0 5sec End Tone 75 VOICECOM USER MANUAL ISSUE 4 0 508 724 1016 1563 1563 1 1016 724 508 1563 1563 2 508 508 508 1563 1563 3 1250 742 1250 1563 1563 4 508 724 1016 1563 1563 5 508 724 1016 1563 1563 6 508 724 1016 1563 1563 7 1563 1563 8 508 724 1016 No tones 9 1016 724 508 No tones 10 508 508 508 No tones 11 1250 742 1250 No tones 12 508 724 1016 No tones 13 508 724 1016 No tones 14 508 724 1016 No tones 15 No tones VAA Kevpad Tones Speak 752Hz PRESS 1002Hz RELEASE Func 400Hz momentary Call Local 848Hz while key is pressed Call Exchange 200Hz for 5 seconds after key is pressed Message Bank Editor Requirements VOICECOM USER MANUAL ISSUE 4 APPENDIX G I S Approvals koeftijficate OF COH nfe rmm EY Certificate No AUS Ex 03 3880X Issue 0 Original Issue 2 04 2003 Date of Expiry 2 04 2013 Certificate Holder AMPCONTROL CSM PTY LTD 250 Macquarie Rd WARNERS BAY NSW 2282 Electrical Equipment Voice Control Type A VCA Type of Protection Ex ia Marking Code Ex 1a I AUS Ex 03 3880X Manufactured By AMPCONTROL CSM PTY LTD 250 Macquarie Rd WARNERS BAY NSW 2282 Lied by Testi 7 Safe A U T R A L A 919 Londonderry Road Londonderry NSW 2753 Phone 02 4724 4900 Fax 02 4724 4999 STANDARDS AUSTRALIA Standards Australia Quality Assurance Services Pty Limited A B N 67 050 611 642 TEL Page lof
13. 15 APPENDIX G LS APPROVAL S citet te aea eta aca cte t vaccis TT CONTENTS VOICECOM USER MANUAL ISSUE 4 CHAPTER 1 Overview of the VoiceCom System The Ampcontrol designed VoiceCom system is a multi station audio communication system suitable for long wall and conveyor message applications The system s three principal functions include generating pre start alarms playing pre recorded voice messages and one to many station communications The system is comprised of two main components the VCA VoiceCom Controller and VAA VoiceCom Amplifier field units System highlights 2 Intrinsically Safe communication lines Connection of up to 31 VAA field units per line User selectable pre start alarm tones for each line Pre start confirmation from all VAA units User recordable voice messages up to 255 messages can be stored PC software to create voice message banks High quality audio output Advanced diagnostic and preventative maintenance features Call Exchange functionality VCA features One compact unit controls pre start alarms and voice messages 4 line backlit LCD display Tactile seven button integrated keypad optional external keypad available Easy to use menu system allowing access to system status and configuration pages 16MB flash memory for up to 25 minutes of voice message storage Monitor and configure VAA field units from VCA RS 232 interface for downloading voice messages from a PC RS 485 Modbus interface al
14. 24VDC supply Table 2 Connections for Strobe Mode Terminal Function 0 0 0000 DIA to DIS Set up message address in binary where DI1 is the least significant bit Apply and hold 24VDC to the inputs until strobe input has been asserted Momentarily apply 24VDC edge triggered input to play the message once the message address has been set up using inputs DI1 to 8 DI10 to 12 Not used no connection PSRI Apply 24VDC to input and hold to play pre start alarm down line 1 PSR2 Apply 24VDC to input and hold to play pre start alarm down line 2 OV DI OV common for all digital inputs from negative side of 24VDC supply Table 3 Connections for Modbus Mode Terminal DI1 to DI12 Not used no connection PSRI Apply 24VDC to input and hold to play pre start alarm down line 1 PSR2 Apply 24VDC to input and hold to play pre start alarm down line 2 OV DI OV common for all digital inputs from negative side of 24VDC supply VOICECOM USER MANUAL ISSUE 4 Digital Outputs The four digital outputs labelled DO1 to 4 provide indication of system status These are transistor outputs The positive side of a 24VDC supply must be connected to the terminal marked 24V The negative side of the 24VDC supply is connected to the input or device to complete the circuit when the output turns on See the figure below The indication provided by these digital outputs can also be read via Modbus Refer to the Modbus data table in App
15. 4 of Certificate No AUS Ex 03 3881X Issue 0 Original Issue 2 04 2003 Date of Expiry 2 04 2013 Certificate Holder AMPCONTROL CSM PTY LTD 250 Macquarie Rd WARNERS BAY NSW 2282 Electrical Equipment Voice Amplifier Type A VAA Type of Protection Ex 1a Marking Code Ex 1a I AUS Ex 03 3881X Manufactured By AMPCONTROL CSM PTY LTD 250 Macquarie Rd WARNERS BAY NSW 2282 lied try Test I Safe A U S T R A L A 919 Londonderry Road Londonderry NSW 2753 Phone 02 4724 4900 Fax 02 4724 4999 STANDARDS AUSTRALIA Pape lof ues Standards Australia Quality Assurance Services Pry Limited A n N 67 50 611 642 j VOICECOM USER MANUAL ISSUE 4 Certification of Administered by Standards Australia Quality Assurance Services This certificate is granted subject to tbe conditions as set out in Standards Australta Miscellaneous Publication MP 69 and the Procedures Doc O7 134 of the scheme The electrical equipment aud any acceptable variation to it specified tu tbe schedule to this certificate and the identified documents was found to comply with the following standards AS NZS 60079 0 2000 Electrical equipment for explosive atmospheres Part 0 General requirements incorporating Amendment 1 AS NZS 60079 11 2000 Electrical equipment for explosive atmospheres Part 11 Intrinsic Safety P incorporating Amendment 1 This certificate does not ensure compliance with electrica
16. Certification It is a condition of manufacture that the transformer must be subjected to a routine test where a 1500 Vrms is applied between the input and output windings of the transformer for not less than 1 minute without resulting in insulation breakdown 2 It is a condition of safe use that following input parameters be taken into account while installing this apparatus PARAMETERS Maximum non IS Vollage U OV Audio Cali Vline 0V and VPS 250 V Maximum Input Voltage U 19 V Maximum Input Current l 3A Maximum Input Capacitance C Negligible Maximum Input Inductance L Negligible However in the actua installation with the non hazardous area circuits connected to the certified power supply it is the output parameters of the power supply that will need to be taken into consideration The power supply shall only be connected with polarity as shown in the drawing VCOM Z 036 and this connection shall be protected by a minimum of IP20 from tampering PARAMETERS Maximum Output Voitage U Maximum Output Current I Maximum Output Capacitance C Maximum Output Inductance L Audio and Audio 3 It is condition of safe use that the Voice controller Type A must be installed in a safe area 4 It is a condition of safe use that the IS and non IS cabling of the VCA are kept separated Issued by Test Safe TOA 919 Londonderry Road Londonderry NSW 2753 Phone 02 4724 4900
17. Editor Installation The VCA Message Bank Editor consists of a standalone executable exe file that can be installed anywhere in the PC s file system When run for the first time the program will create a settings file with the extension ini in the same folder as the executable file No other installation or configuration is required AT VOICECOM USER MANUAL ISSUE 4 Creating a Message Bank Starting the Editor 1 To start the editor double click on the VCA Message Bank Editor executable file A title window will appear for a moment showing the software version number as the program starts up The main editor window as shown in Figure 36 will appear P vcA Message Bank Editor Version 1 1 Figure 36 Message Bank Editor Main Window 2 Like most Windows applications the editor window has a menu bar at the top left corner of the window with File Edit Message and VCA menus From the File menu a new message bank can be started by selecting New or an existing message bank can be opened by selecting Open Creating a new message bank 1 Open the File menu and select New to open a blank message bank A message bank looks much like a table made up of six columns and 255 rows one for each message as shown in Figure 37 The columns are Number voice message number 1 to 255 Description the imported WAV audio file name by default but can be changed 14 characters max Format audio format of WAV file e g 16bit 4
18. ISSUE 4 NN close the close relay output PSC1 Ol to 7 l 30mA to 180mA in 10mA steps 1 to 31 or None 30mA to 180mA in 10mA steps 14200 Par 2400 Par 4800 Par 9600 Par 19k2 Par 1 to 31 Baud Even Odd No Baud Even Odd No Baud Even Odd No Baud Even Odd No Baud Even Odd No Sets the pre start alarm tone for LINE 1 There are 8 pre start alarm tones available This sets the minimum current that must be drawn by a VAA from its battery on LINE 1 in order for the VAA to confirm that it has sounded the pre start alarm This can be set to such a level as to indicate that one of the VAA s two speakers has failed See the Pre Start Alarm chapter for more information This feature is not implemented in this version of the VCA hardware and therefore cannot be set This is the number of VAA s that are connected to the LINE 2 This is the number of VAAs that the VCA should be able to communicate with If no VAAs are connected then this is set to None This is the maximum number of VAAs on LINE 2 that can fail to sound a pre start alarm and still allow the pre start to be successful A successful pre start alarm will close the close relay output PSC1 oets the pre start alarm tone for LINE 2 There are 8 pre start alarm tones available This sets the minimum current that must be drawn by a VAA from its battery on LINE 2 in order for the VAA to confirm
19. Not connected Figure 39 Importing an audio file 9 As with any program you are working with save frequently It is recommended that the Message Bank is saved as soon as it is created Open the File menu and select Save As Give the file a meaningful name and note where the file is saved Message Bank files have the file extension vms The file name is displayed in the main window s title bar above the menus If any changes have been made that have not been saved the file name will have an following it as shown in Figure 39 6 Repeat steps 2 through 5 again to import more messages into the message bank and remember to save frequently to ensure changes are not lost TIP Do not loose track of your Voice Message Bank files You will need them if you ever want to add or remove messages to or from the VoiceCom system This will save you the trouble of having to re record and create a Message Bank from scratch If set up properly the same Message Bank could be reused on multiple systems Voice Message Settings There are three voice message attributes that can be changed These are e Voice message description e Audio Format e Pretone Description ivi A Message Bank Editor Version 1 1 Editing M Click on a Description cell to change the message title text File Edit Message WCA When a Description cell is clicked the text becomes highlighted and a curser appears A maximum of 14 Humber Description Form char
20. PSA initiate input 5 Digital Inputs 5 6 7 and 8 state 3 PSR2 input state LINE 2 PSA initiate input 6 nsu aa men o o unasserted open o o asserted closed VCA Configuration Level 6 VOICECOM USER MANUAL ISSUE 4 This is the final level of the VCA menu structure All the user configurable system and line specific settings are found on this level Most of these are set during commissioning Refer to Appendix A for VoiceCom system commissioning recommendations The configuration settings in page order are shown in the table below Voice Message 1 Mode 2 DI 1 8 Se if IDI dela Mbus Lot med 29255 Modbus I 2591 Voice Message Plavback Volume to 10 VAA Digital Coms jor no Turn off with Audio yes VAA Digital Coms Turn off Threshold Line 1 of VAA s to be online 1 to 31 or None Line 1 ServiceFactor VAA s offline This is the voice message initiation mode setting and depends on how the system was installed 1 The first 12 messages are initiated directly by asserting digital inputs 1 to 12 and messages 13 to 255 are initiated via Modbus 2 All 255 messages are initiated by setting the message address in binary via digital inputs 1 to 8 and asserting digital input Y as the strobe All 255 messages are initiated via Modbus This is the master voice message playback volume where 1 is low and 10 is high Setting the volume too high may cause th
21. Pressing the ENTER key will make the display jump to the of VAA s to be online configuration page on menu level 6 VAA Address Setup Page Each communication line can support up to 31 VAA units depending on the l S power supply used and cable length Utilising both VCA communication lines the system can communicate with 62 VAAs Each VAA unit is programmed with a unique address from 1 to 31 The configuration procedure is the same for VAA units connected to LINE 1 or LINE 2 The addressing process is carried out using the VAA unit s unique four digit serial number engraved on the front fascia TIP During installation the location and serial number of each VAA unit should be noted A table should be created with the VAA serial number location and chosen address This will soeed up the addressing process TIP Addresses should be allocated sequentially giving the VAA closest to the controller address 1 second closest address 2 and so forth VOICECOM USER MANUAL ISSUE 4 VAA addressing procedure 1 From the VCA s Main Status page arrow down to the Line Status page for the line that the VAA unit is connected to LINE 1 or LINE 2 Note from the menu structure diagram that the first page below the Main Status page is the Line 1 Status page The next page down is the Line 2 Status page To set or change the addresses of VAA units connected to Line 1 go to the Line 1 Status page To set or change the addresses of VAA units connected to Line
22. This will depend on how much current the communication line can provide VOICECOM USER MANUAL ISSUE 4 Auto shutoff If the battery voltage falls below 5 9V it will shut down its output to prevent causing permanent damage to the SLA battery cells This will occur if there is insufficient charging current available from the communication line Sleep Mode The battery pack can be put to sleep to conserve battery charge and protect the battery cells from damage Putting the battery pack to sleep forces its output to shut down The battery pack should be put to sleep if the communication line power supply is not available i e when the VAA is not connected to the communication line To put the VAA to sleep 1 Disconnect the VAA from the VoiceCom communication line 2 Momentarily connect a piece of wire between terminals 1 and 6 of the battery pack header as shown in Figure 29 A piece of wire can either be inserted in the holes on top of the header or into the socket holes 3 The VAA display will go blank when the battery has shut down 4 Remove the wire from the header Figure 29 Putting the VAA to Sleep Waking the VAA To wake up a VAA that has shut down connect the VAA to a VoiceCom communication line with a power supply voltage greater than 11Vdc e AVAA that has been put to sleep and has enough charge will wake up straight away e AVAA that has shut down due to low charge will have to be connected to a comm
23. for easy connection to a PC via a standard RS 232 9 way serial cable A ready made serial cable p n E09400 is available from Ampcontrol A serial cable can also be easily assembled Figure 4 details the DB 9 pins that are used for this RS 232 serial cable RS 485 Modbus Communication The RS 485 port is used to connect the controller to a Modbus capable control or SCADA system The configuration of these two ports is described in the Refer to the VCA Operation chapter of this manual for information on how to configure the communication parameters for this port Further information on using Modbus can be found in Appendix B Table 4 below lists the data port connections and Figure 4 shows the terminal wiring Table 4 VCA Data Port Connections Terminal Function w r t the VCA 485 RS 485 negative OV 485 RS 485 common 485 No connection 232 TX OV 232 232 RX VCA COMMS Remote Terminal Device 485 Of TxD RxD To Modbus Master OV 485 OU GND Device RS 485 485 RQ TxD RxD Sli 232 TX S Jl RxD DB9 Pin 2 To PC Serial COM 0V 232 AAA OND DB9 Pin 5 Port RS 232 232 RX S3 ET 159 999 TxD DB Pin 3 amp Figure 4 VCA data communication wiring Communication Line 1 and 2 l S Interfaces Note Refer to VCA Certificate of Conformity AUS Ex 03 3880X and VAA Certificate of Conformity Aus Ex 03 3881X for the correct
24. from these menu levels Line Status Page The Line Status page for LINE 1 is shown in Figure 14 below PSW ROOAO OPO O JIL Figure 14 Line Status Page Menu level shown on all pages except those on A Digital comms status indicator appears as a 1 menu level 1 spinning bar when digital communication is on 2 Line number LINE 1 for this display 7 VAA key press indication 4 Number of VAA s set to be online g VAA address being polled Current state of pre start 1 request PSR1 Representation of communication line showing 4 digital input o o open o o asserted 9 VAA s online Current state of pre start 1 confirmation PSC1 9 relay output o o open o o closed VAAs Online and Clash Indication VOICECOM USER MANUAL ISSUE 4 The third and fourth lines of this display give a semi graphical representation of the communications line Each display character segment represents a VAA address Address 1 is at the left end of the third line of the display and address 15 is at the right end Address 16 is at the left end of the forth line and address 31 is at the right end e symbol represents a VAA that is connected to the line and communicating with the VCA e character indicates that there is no VAA present at that address e C character indicates an address clash at that address Number of VAAs to be Online Value The top line shows the number of VAA s that we expect to see online This value should match the number
25. gt a gt AMPCONTROL AM o VoiceCom System User Manual No copies of the information or drawings within this manual shall be made without the prior consent of Ampcontrol Designed and Manufactured in Australia by Ampcontrol Pty Limited ACN 000 915 542 Phone 02 4956 5899 Fax 02 4956 5985 www ampcontrol com au USER MANUAL E06397 ISSUE 4 15 8 08 VCA Manual Issue 4 E06397 15 8 08 pdf Copyright Notice No part of this publication may be reproduced transmitted or transcribed into any language by any means without the express written permission of Ampcontrol Pty Ltd 250 Macquarie Road Warners Bay NSW 2282 Australia Disclaimer Ampcontrol Pty Ltd will make no warranties as to the contents of this documentation and specifically disclaims any implied warranties or fitness for any particular purpose Ampcontrol further reserves the right to alter the specification of the system and or manual without obligation to notify any person or organisation of these changes Before You Begin We would like to take a moment to thank you for purchasing the VoiceCom Communication System To become completely familiar with this equipment and to ensure correct operation we recommend that you take the time to read this user manual thoroughly CRN 4820 Software Version 4 0 VOICECOM USER MANUAL ISSUE 4 VOICECOM USER MANUAL ISSUE 4 CHAPTER 1 OVERVIEW OF THE VOICECOM SYSTEM ener nnn car
26. indicated by the RQo o graphic 2 Line 1 20 VAA s Pow 12006 OPOS 3 Once all of the VAA confirmations have been received the PPPPP PPPPP PPPPP Line Status page will then appear shown in Figure 32 It can be seen that all 20 VAA units have confirmed as indicated by the P s each representing confirming VAA Figure 32 4 The OPo o graphic indicates that the pre start confirm relay is energised because the pre start alarm has sounded successfully Example 2 a failed pre start alarm The system e VAAs connected 20 e of VAA to be online 20 e ServiceFactor f VAA s offline 0 1 The settings are kept the same as example 1 2 Figure 33 shows how the Line Status page once all the 2 Line 1 20 VAA s confirmations have been received Note the two X symbols re PSW RQo o OPo o indicating that VAAs at addresses 7 and 20 failed to confirm PPPPP PXPPP PPPPP the pre start alarm 3 The confirmation output will not close OPo o because two Figure 33 VAA failures have been detected The Service Factor is set to 0 therefore the system will not tolerate any failed VAAs Setting the Service Factor to 2 would have made this pre start alarm operation successful VOICECOM USER MANUAL ISSUE 4 Example 3 The system e VAAs connected 20 e of VAA s to be online 20 e ServiceFactor VAA s offline 3 1 Forthis example the Service Factor is set to 3 2 Figure 34 shows how the Line Status page once all the confirmations hav
27. one for each communication line 4 digital outputs providing system status indication 4 relay contacts providing pre start alarm confirmation outputs and system status indication RS 232 3 wire port for downloading of voice messages RS 485 3 wire port for Modbus connection to a PLC 2 4 wire communication line terminals Line 1 and Line 2 including a separate l S power supply connection for each line 2 wire audio interface connection to connect the VoiceCom System to a telephone exchange via an approved barrier e 8 inputs for the connection external keypad control buttons and a lock switch or the VCA Remote Keypad Module RS232 serial connection
28. the VAA Status page for the VAA at address 1 VAA Status Page VAA Setup Page 2 LI VAA 1 L00 Vitae tl 0V Tres 21 2 L1 VAA 1 Set Up Voarts 66V Vols L3 Teat LWA Tens 20 auner a ene c uec Bat Chro ur A0mAa Figure 21 Entering VAA Setup pages 2 Press the keys to scroll between the VAA settings CHARGE CURRENT MIC GAIN VOLUME THRESHOLD To change a setting press the ENTER key and then the press the key to decrease or increase the value 2 Ll VAA l Set Up 2 Ll VAR 4 L Set Up Z Bl WAR t I oet Up Pune ent gt eee urne iene reee Honert ems eo Bat Chro Ur mA VAA Volume 3 Mic L Audio Threshold 2 VOICECOM USER MANUAL ISSUE 4 Modbus Communication Status Level 4 The Modbus page is the only menu page on menu level 4 shown in Figure 22 It displays the VCA s Modbus communication status Modbus is the protocol used on the VCA s RS 485 port to communicate with Modbus capable control systems such as PLCs The information given on this page includes indication of Modbus commands received and any communication errors detected by the VCA 4 Modbus Cee joie esta ail Figure 22 Modbus Status Page A solid block appears when a checksum error Adr The Modbus slave address the VCA is setto crc EA NAME A solid block appears when a READ A solid block appears when a parity error is Read command is received Par detected A solid block appears when a WRITE m Wrt command i
29. with seven terminal plugs The l S Earth terminal is the eighth header and is fixed to the rear of the VCA There is also a mains earth connection point which should not be confused with the l S Earth The eight terminal headers and case earth are shown in Figure 3 These are 1 Digital Inputs and Output 6 Line21 S Communication Line Interface 2 Data Communication RS 232 and RS 485 7 1 8 External Keypad Interface 3 110VAC Supply Power and Relay Outputs 8 LS Earth 4 Line 11 S Communication Line Interface 9 Case Earth l S Audio Interface for telephone exchange circuit connection VOICECOM USER MANUAL ISSUE 4 Os EXT KPD IF coms vera 1 0
30. 2 go to the Line 2 Status page 2 Once on the desired Line Status page press and hold the key and press the ENTER key to enter the VAA Address Setup page This is shown in Figure 15 NOTE VAA address programming will time out after 10 seconds of inactivity and the display will revert back to the Line Status page A time out message will appear on the third line when the display is about to time out Continually pressing the key will reset the 10 second timer and stop the address setup display from timing out Line 1 Status Page VAA Address Setup Page 2 Line 1 1 VAA s 2 L1 Address Setup PSW RO o o OPo o Accept Ent ese gt m coe O00 Bas 1 Figure 15 Entering VAA Address Setup Page 3 From the Address Setup page you can cycle through all the connected VAA units by pressing the ENTER key The VAA units will appear starting with the unit with the lowest serial number VAA serial number 0100 will be used in this example Once you have found the serial number of the VAA that you want to change the address of press the key once You will notice on the second line of the display the text will change from Accept to SetAdr as shown in Figure 16 2 L1 Address Setup SetAdr Ent lt esc gt 2 L1 Address Setup SetAdr Ent lt esc gt Sm SOG Adr qe Sc UNO Ace l Figure 16 Locating the VAA to address by serial number 4 Press the key again and the address will increment up by one Contin
31. 4KHz Size size of the WAV file depends on the audio format selected Duration length in seconds of the audio sample Pretone a tone that can precede and or follow a voice message to get users attention Format Size Duration Pretone 4 Memory 12850kB Figure 37 Bank Message Bank View 48 VOICECOM USER MANUAL ISSUE 4 2 Like many Windows operations one process can be done more than one way Adding an audio message to the Voice Message can be done by either a Selecting the message number where you would like to add a message by clicking the message number once The selected row will become highlighted Then select Import Sample from the Message menu Selecting the message number where you would like to add a message by clicking the message number once Click the right mouse button A floating menu will appear from which you can select Import Sample 3 This will open the standard Windows Open Dialogue Box as shown in Figure 38 This allows you to select the desired WAV audio file to import into the Message Bank Notice that the Files of type drop down menu defaults to WAV Files WAV Only WAV audio files can be imported into the message bank Select the file and click ES Look in Y Voice Messages t ek Ed WRI Req TA Waw JAFC MG Dr Wrn wav X AFC RI Failed wav lt i Y RI_Req_Shx wav 4 AFC MG Dr Fauk wav BSL RI Failed wav 4 S
32. CA These inputs need to be held on for the length of pre start alarm required The VCA will display the text PSW Active on the Main Menu page Refer to the Installation and Wiring chapter for more detailed information on using the digital inputs NOTE Pre start alarms cannot be initiated via Modbus When a pre start alarm is initiated for a particular line the VCA sends the pre start alarm command down that line using the digital communication protocol The command includes the following information e Pre start alarm tone to sound tones 0 to 7 depends on configuration e Pre start minimum current draw threshold depends on configuration The pre start alarm will sound on top of any voice messages being played or VAA to VAA communication The pre start alarm will sound for as long as the respective digital input is held high It sounded be sounded for at least 6 seconds which is the time it can take for the VAAs to confirm sounding the alarm The VCA will allow a pre start alarm to sound for a maximum of 30 seconds After which time the pre start alarm will be blocked The VCA will display the text PSW Blocked on the Main Menu page To sound the pre start alarm again the input must be removed and then reapplied For every one second that the pre start alarm request input is removed three seconds of alarm sounding time become available If the input is removed for 10 seconds a full 30 second pre start alarm can be sounded This feature ha
33. Cycle The display shows the VAA s current operational parameters and status The display shows line voltage L U battery voltage B U and battery current in milliamps B I The display continuously cycles through these three operational values in the order shown in Figure 28 B I the battery current does appear twice in each cycle VOICECOM USER MANUAL ISSUE 4 LINE VOLTS BATTERY CURRENT undi VOLTS BATTENY CURRENT Figure 28 VAA Display Cycle Display Segments The VAA display also has three horizontal segments that are very useful in fault finding From left to right these segments are e VAA amplifier on While the VAA s amplifier circuit is enabled this segment will remain on The amplifier circuit is enabled when the VAA amplifies a sound through its speakers e Digital communication heartbeat When a VAA is connected to a healthy VoiceCom communication line with a VCA the digital communication heartbeat segment will flash This indicates that the VAA is sensing the digital line protocol e VAA data poll The VCA does a round robin scan of all 31 VAA addresses that takes approximately 7 seconds Every address is polled regardless of whether a VAA is programmed to that address or not Every time a VAA is polled this segment will flash Viewing a VAA s status page from the VCA will cause that VAA to be polled more often NOTE VAAs with version 1 firmware do not have these status segments Display Mes
34. Fax 02 4724 4999 STANDARDS AUSTRALIA a BSA Pape sics Obs Standards Australia Quabty Assurance Services Pry Limited A B N 67 050 6101 642 VOICECOM USER MANUAL ISSUE 4 Certification of Ex 03 3880 Addendum to Certificate NO Conditions of Certification continued a The I S Earth terminals shall be infallibly connected to the system earth using copper conductors having a minimum cross section of 4 mm Drawing Schedule VCOM 7 030 Sheet 1 of 4 VCA IS Line Barrier Schematic VCA Line Interface Barrier Schematic 21 03 2003 VC OM Z 033 Sheet 3 of 4 VCA Audio Barrier Schematic 21 03 2003 VCOM Z 034 VCA IS Keypad Barrier Schematic L0 17 01 2003 VCA Line Power Mon Schematic 21 03 2003 VCOM Z 035 VCOM Z 036 VCA Voice Communications Typical 18 03 2003 Connection Diagram Document No VCOM Z 038 ice COM ais 0 21 01 2003 VCOM Z 039 3 Sheets VCA IS Key sad Barrier Artwork Y 21 03 2003 VCOM Z 040 3 Sheets VCA IS Line Barrier Artwork _ 21 03 2003 VCOM Z 041 VCA General Arrangement 25 01 2003 VCOM Z 042 VCA Internal Arrangement m 18 03 2003 i Issued hy Test I U Safe 919 Londonderry Road Londonderry NSW 2753 Phone 02 4724 4900 Fax 02 4724 4999 STANDARDS AUSTRALIA E boa Pape ob xci Standards Australa Quality Assurance Services Pty Limited A B N G7 050 GEL 642 VOICECOM USER MANUAL ISSUE
35. Keypad Interface termination and Figure 6 shows the wiring connections to the VCA Remote Keypad Module available from Ampcontrol p n E08985 The keypad input functions are self explanatory Input KP3 is the LOCK input When the LOCK input is asserted VCA configuration settings can be changed and Voice Message Bank files can be downloaded Opening the LOCK input prevents any settings from being changed The LOCK input should be wired to a key lock switch located adjacent to the VCA or behind the panel door The keypad inputs are powered from an l S power supply One of the communication line l S power supplies can be used For further wiring details refer to approval drawing VCOM Z 036 Table 7 l S Keypad Interface Connections Function 0 KP JUPbutton 0 0 00000 KP2 LEFTbutton 00 0 KP3 Key LOCK allows access to VCA settings KPA JRIGHTbutton o LM i Ke OR Ke Terminal 1 KP KP2 KP3 KP4 KP5 KP6 KP7 KP8 OM 12VDC 18VDC VCA Remote Keypad l S Power Supply VCA I S Keypad Terminals Interface Terminals SS V G ja jmt y COM KP8 3 E LUS KP8 KP7 S TI KP7 KP6 S T6 KP6 KP5 S lg IS KP5 KPA SLL LAS KPA LL LUIS KP3 e i e LABS e KP1 KS ILLI ILO KP1 GS a
36. L ISSUE 4 Ao RA US Ld zer T eee oe gy As ACE Erg g ad ES MM EEE Et ke Assurance Services Quality e 33 AE 4 eds ue Administered by Standards Australia Ex 03 3881X Addendum to Certificate No sos Conditions of Certification continued pA It is a condition of safe use that the Voice Amplifier Type A must be mounted in the cut out of an external IP55 enclosure with fittings that do not degrade its IP rating Drawing Schedule Document Title Issue Date VAA Battery Pack 0 21 02 2003 VAA Battery Pack Charger VCM Z 005 VAA Battery Pack Disconnector _VCM Z 006 VAA Battery Regulator VCM Z 007 VAA 06 03 2003 VAA Core 0 VAA Digital L 2 06 03 2003 VOM Zon VCM Z 013 VAA Threshold Detector VCOM Z 006 VAA Battery PCB Artwork 0 24 03 2003 3 Sheets VCOM Z 014 VAA core PCB Artwork 0 3 sheets VAA Battery Pack Mechanical Design Diagram 261082003 VCOM Z 016 26 03 2003 VCOM Z 017 VAA Back Panel Mechanical Design Diagram 26 03 2003 X a C ANd O N i 24 03 2003 VCOM Z 018 VAA Mechanical Design Diagram 25 03 2003 VCOM Z 019 VAA Mechanical Drawing Diagram 0 27 03 2003 Issued by Scandards Australia Quality Assutance Services Pry Limited A B N 67 050 GEL 612 Test I Safe 919 Londonderry Road Londonderry NSW 2753 Phone 02 4724 4900 Fax 02 4724 4999 STANDARDS AUSTRALIA oe 3 ka Page a S CN
37. Pre Start Warning Tone 1 6 VCR Contigunatbion Line 1 Pre Start OK I Threshold 150mA start alarm the VAA will draw a certain amount of current with both speakers functioning If one speaker fails the current drawn will be approximately half the value drawn if both speakers were functioning If both speakers fail a negligible amount of current is drawn 130mA is a suitable current threshold The consequence of a VAA drawing less than the threshold current during a pre start alarm is that the VAA will not confirm the pre start alarm The procedure is the same for LINE 2 Typical pre start alarm battery current draw values can be found in the Specifications section of this manual Use the following form to note down all the commissioned VCA configuration settings and keep this form in safe place This record will save time if the VCA is replaced VOICECOM USER MANUAL ISSUE 4 VCA Configuration Record Tick v the box matching setting value or write setting value in the square brackets provided Keep a copy of this record near the VCA Voice Message Mode DT 1912 Mbus FSHI DE L 78 msg i 2554 Modbus l 2594 Voice Message Plavback to 10 Volume VAA Digital Coms Turn yes or no off with Audio VAA Digital Coms Turn to Threshold Line 1 of VAA s to be to 31 or None online Line 1 ServiceFactor to VAA s offline Line 1 Pre start Warning Oj to 7 Tone Line 1 Pre Start OK I
38. Pre start alarm configuration VAA Configuration The following VAA parameters need to be configured e Address e Volume and microphone gain e Audio threshold e Charging current Address Setup The procedure for setting VAA addresses is explained in the VCA Operation chapter in the section titled VAA Address Setup Page The recommended process for addressing the VAAs is 1 Record the serial number of all VAAs connected to each communication line used LINE 1 and LINE 2 The VAAs on each line are addressed separately Record the serial numbers in the order in which the VAAs are physically installed on the communication and note their locations for reference 2 Address the VAAs sequentially as shown in Figure 44 Go to the VAA with the list of serial numbers and follow the VAA address set up procedure Locate the VAA with the first serial number and set this to address 1 LINE 1 LINE 2 AANA ten 0000 0000 0000 Adr Adr Adr Adr Adr 31 2 1 1 2 Figure 44 VAA Addressing on Line 1 amp 2 3 Repeat this until all VAAs are addressed Keep the VAA serial number and address record up to date whenever VAAs are replaced and easily accessible NOTE The location of the VCA has no effect on VAA addressing The VCA could be connected to a point half way along the communication line at the tripper drive for example This is shown in Figure 45 VOICECOM USER MANUAL ISSUE 4
39. Programmable Settings Threshold The threshold setting determines what level of audio present on the communication line will be amplified by the VAA unit The threshold can be set from 0 to 7 where 7 would provide the highest level of noise immunity A higher threshold value is used if there is some induced noise on the communications line causing the VAA units to turn on unintentionally As well as being a nuisance VAAs turning on unintentionally can lead to unnecessary battery drain VOICECOM USER MANUAL ISSUE 4 Volume and Microphone Gain The volume and microphone gain are combined into one setting for example L3 where L is the gain level and 3 is the volume level The volume setting controls the VAA unit s output volume The volume can be set to a value from 0 to 3 where 3 is the maximum volume This applies to voice communication only Pre start alarms always sound at a fixed volume The VAA unit s microphone gain is set in conjunction with the volume setting The gain can be set to L for low or for high The low gain setting would be appropriate for an environment with a high level of background noise The low setting necessitates that the operator speaks close to the VAA and raise his voice The high gain is suitable for most other low noise environments Some simple tests will help to find an appropriate gain level Battery Charging Current The battery charging current can be set to a value between 5mA and 40mA As soon
40. The number of VAAs that the VCA can communicate with is greater less than the of VAAs to be online parameter Address Clash Two or more VAAs have the same address The of VAAs to be online parameter is set to None A prestar alarm is active PSW Health The pre start alarm has been successful All the required VAAs confirmed y sounding the pre start alarm The maximum pre start initiation time has been exceeded 30 seconds Remove the pre start alarm input and reapply to sound the pre start alarm again For every second that the pre start alarm input is removed three REN OBEN seconds of pre start alarm can be sounded if the input is reapplied See the Pre Start Alarm Operation chapter for more information on the operation of the pre start alarm There are also a couple of VCA fault message that can appear on the second line of the display on the Main Menu page Refer to the Troubleshooting chapter for more information on VCA faults Table 92 VCA Hardware Fault Alarms An error has occurred with the VCA configuration memory A fault has occurred with the VCA Message Bank hardware 18 VOICECOM USER MANUAL ISSUE 4 The tricolour Status LED provides an indication of the health of the VoiceCom system e Green both communication lines are healthy no VAA reply alarms or address clashes e Orange a communication line fault exists such as too few VAAs detected or an address clash e Red a VCA fault exists such a
41. They are listed in Table 19 Table 19 Message Bank Editor Tools Function Desert O Plays selected message Can be used to test the effect of changing the audio format a message Clears a message from selected message number TNNT Inserts a row into the message bank This will shift all the following messages up by one message number for each row inserted Delete Deletes a row from the message bank This will cause all following messages to drop by one in message number for each row deleted Exporting an audio message allows you to save that message as a standalone WAV file The message Export Sample Will be exported at the same audio format that it was originally imported in Downloading and Uploading the Message Bank Once a Message Bank has been created or modified the next step is to download it to the VCA However a Message Bank that has been loaded into a VCA can up uploaded back to a PC This may be necessary if the original Message Bank PC file has been lost and voice messages need to be added or changed for example Downloading This is the procedure for downloading the Voice Message Bank to the VCA This procedure assumes that a Message Bank file has been created as described in the previous section of this chapter and is ready to be downloaded 1 Connect a serial cable between the VCA s RS 232 terminals and the serial port on a PC Ensure the TX and RX connections are correct It i
42. U BSL_Starting waw q AFC TG Dr Wrn wav PLC_Comms_Failed wav Y AFC_Starting waw qjaFC TG Dr Faul wav lt EJAFC_LO_Sh10 wav 4 amp DCB Reverse wav qU Crusher Dr Fault wav JRI Granted Sh10 wav 4 Y PumpSta_Wrn waw lt Y BSL_Dr_Fault wav Y RI_Req_sh10 wav 4 Y PumpSta_Fault wav Y JBSL_LO_DCB wav YRI_Granted_5h5 wav q JRI Req Failed wav Y JBSL_LO_BEnd waw Y RI_Req_Sh5 waw q Y ipc_Methane_Face wav JBSL LO TA wav dJAFC LO Sh15 wav 4 Y 1pc_Methane_MG waw Y BSL_LO_Sh5 waw Y RI_Req_sh15 waw 4 4 OB_Belts_Stopped waw amp Jo5 wav AJRI Granted Sh15 wav q EN n File name PLC Comms Failed wav My Network P Files of type wav Files WAV M Cancel the Open button As an example we will choose the PLC_Comms_Failed wav file and import this to message 1 Figure 38 Open Dialogue Box 4 Once imported the voice message will appear in the message bank at the chosen message number as shown in Figure 39 There are three message attributes that can be edited Description Format and Pretone number These will be explained in the next section It may be easier to import all of the required messages first and then change the message settings VOICECOM USER MANUAL ISSUE 4 EA vcA Message Bank Editor Version 1 1 Editing New YCA Message Bank File 4MS File Edit Message YCA Number Description i Duration Pretone Imported audio message at message number 1 VEA Memory 246 69kB E
43. USER MANUAL ISSUE 4 APPENDIX F Specifications VCA Input Supply Voltage Input Supply Frequency Input Supply Power Operating Temperature Digital I O Number of Inputs On state voltage range Nominal Input Voltage On state Current Max Off state Voltage Max Input Impedance Reverse Polarity Protection Number of Outputs Maximum Output Voltage Output Current Rating Relay Outputs Number of Outputs Relay Voltage Rating Relay Current Rating Digital Communications Communication Ports RS 232 protocols RS 232 baud rates RS 485 protocols RS 485 baud rates parities Message Bank Memory Type Capacity Tones Pre start Alarm Tones 0 LI l o oc1 c n5 Pre End tone Frequencies Number 110VAC 20 50 60Hz lt 8 watts lt 60 degrees C 14 12 24VDC 24VDC lt 6mA 3 5V 4 7k Ohm Yes 28 5V 4mA 2 change over 2 N O 200 VAC max 5A RS 232 RS 485 PC to VCA for Voice Message download only 28 8Kbps 57 6Kbps 115 2Kbps 230 4Kbps Modbus RTU 1200 2400 4800 9600 19 2Kbps even odd none Flash 16MB Alternating 1400Hz and 1701Hz at 8 times sec Alternating 1400Hz and 1701Hz at 2 times sec Alternating 1344Hz and 1687Hz at 4 times sec Rising from 1345Hz to 1701Hz every 0 5sec Rising from 1345Hz to 1701Hz every 0 25sec Falling from 1345Hz to 1701Hz every 0 5sec Rising falling from 1345Hz to 1701Hz to 1345Hz every 1sec Rising falling from 1345Hz to 1701Hz to
44. a vee dia 40 CHAPTER 5 PRE START ALARM OPERATION ccoccccccccocconocnonconconcannanconconconon can nnn nnne cnc crncr narrar narrar 41 Prestar Al On IU ION recente 41 initlating a Pre Sia KA ar i ote xcti edge xit tede t uetus ulus 41 Verifying the Pre start Alarm Request INput oooococcccccnccnconionoonaononconconconconoonoononconconcn noo noonconooninnnos 42 VAA Pre start Alarm Sounding and Confirmation esses 42 Pre Siatt needs 43 Verifying the Pre start Alarm While Active sss 43 Verifying the Pre start Alarm Later c ccccsceccssssssssssssssssscsscsesesessessesssessessesseseessessesessesseseeseesansansatees 44 Prestant Alarm Operation EXaribles suscite eme hie eR nude E SE Fm READ bist repr ER etu iac e Lid 45 Example 1 a successful pre start alarm sse nnns 45 Example 23 failed prestar ala i it sanie Dorado a tt rtu Foxit FUR uad a v O 45 EAP MA PDI eter m HM EMI 46 CHAPTER 6 CREATING AND DOWNLOADING VOICE MESSAGES eere 47 Recording and Editing Voice Messages coccocccccocnconoonoonoonoonornconcnnnannnonoonconoonorncon cnn nnn nnn nnn nnns 4T VCA Message Bank BAQA d a atn decina eb tuus 4T Voice Message Bank Editor Installatlon icc ite tee he ri eb Lit o ehe he ia es 4T ChE ATING a Message Balkon tt 48 Downloading and Uploading the Message Bank ocoocococccnccncc
45. acters can be entered This text will appear on the LE Comms Falle 16bit 4 VCA s display while the message is playing 2 ioc Methane Face 16bit 4 Format Clicking the Format cell will open a drop down menu from which four audio resolutions and sample rates can be selected The audio resolution and sample rate determines the clarity of the audio message The highest setting 16bit 44kHz is comparable to Compact Disk CD quality audio The lowest setting 8bit uLaw 11kHz is comparable to AM radio quality audio The format chosen has a direct impact on the Voice Message Bank Format Size 16bit 44EHz ii 21 memory used The higher the audio quality the larger more memory used 14 The VCA Voice Message Bank memory is approximately 16MBytes For 14 Ze 50 VOICECOM USER MANUAL ISSUE 4 example a 10 second audio sample recorded at 16bit 44kHz will take up approximately 860kBytes of memory Table 17 below shows the audio sample rates compatible with the Message Bank Editor and how they equate to the maximum total message bank length Table 17 Voice Message Bank Audio Format Settings Format Resolution and Maximum Total Message Bank Relative Audio Qualit Sample Rate Capacity seconds y 16bit 44kHz CD audio Bbit Law 44kHz Bbit Law 22kHz 8bit uLaw 11kHz 1520 AM radio As recommended in the previous section voice messages should be recorded and saved at 16bit 44kHz The Message Bank Editor allows you to lower the audio qu
46. ale voices seem to get the most attention e When editing try to trim as much silence from either end of the message sample as possible This will eliminate any unnecessary pauses when messages are played e Maximise amplify the samples as much as possible without introducing distortion and compromising sound quality A combination of audio compression and amplification can be employed to produce high volume even sounding messages The louder message samples are the louder they will play on the VoiceCom system e Always save WAV audio files at 16bit 44kHz Most audio recording programs will allow this The VCA Message Bank Editor has the facility to down sample files if required Higher sampling rates produce better sounding messages VCA Message Bank storage space permitting voice messages should be set to the highest quality format resolution and sampling rate possible The audio format setting is explained later in this chapter VCA Message Bank Editor The next step is to build the voice message bank This is done using the VoiceCom VCA Message Bank Editor PC software provided with the VCA Controller The VCA Message Bank Editor is a software program for Windows PCs It allows the creation configuration and downloading of voice message banks A voice message bank is a single file that encapsulates all of the pre recorded voice messages and associated parameters such as message address audio format and pre tone number Voice Message Bank
47. ality of the imported audio sample by changing the Format setting as necessary Lowering the audio quality makes the audio message smaller thus saving memory This process only affects how the message is played by the VCA The original audio format of an imported audio file is not lost and can be restored at any time by opening the Format menu and choosing the highest resolution and sample rate The Format selection only affects the audio quality and hence the file size of the audio message that is downloaded into the VCA NOTE If an audio message is recorded and saved as an 8bit 22kHz WAV audio file and then imported into the Message Bank then 8bit 22kHz is the highest quality format that can be chosen As more messages are added to the Message Bank you may find that you become short on memory space At this point you may have to start experimenting with the audio formats to free up Message Bank memory TIP You can test an audio message by playing it from within the Voice Message Bank Editor Select the message number and then from the Message menu select Play Clicking the right mouse button over the message number opens a pop up menu that also has the Play option By playing the message the effect of changing the audio format can be heard Pretone 10 xj The Pretone drop down menu allows the user to select tones that sound before pre tone Ecce and after end tone a voice message A number of different pre and end tone r deem combin
48. anging and saving pages and toggle settings configuration settings and for menu shortcuts 3 Key Escape takes user back to Main Status LED VCA status indication Menu Page and for menu shortcuts 17 VOICECOM USER MANUAL ISSUE 4 1 VCA4V02 2003 Msgih leo ELA il C L1 VAAs Replying OR L2 No VAAs Enabled Display and Main Menu Page When power is applied to the VCA the display defaults to the Main Menu page shown in Figure 11 The backlight will turn on and remain active for 5 minutes after the last key press Pressing any of the 7 keys will turn the backlight on If not on the Main Menu page the display will return back to the Main Menu page if no key is pressed for 5 minutes and the backlight will turn off NOTE The only exception to this is when downloading Message Bank files The display does not move off of the VCA Message Bank page when a connection between the VCA and a PC has been established 1 Menu level number on all pages 4 Name of message currently playing 2 VCA Firmware version 5 Line 1 status messages and alarms 3 Number of audio message currently playing 6 Line2 status messages and alarms Below are a list of the status and alarm messages that can be displayed for LINE 1 and LINE 2 Table 11 VCA Alarm Messages Figure 11 Main Menu Page Message Deseription O EE UN T ET The number of VAAs that the VCA can communicate with matches the of qus VAAs to be online parameter
49. as current is drawn from a VAA battery due to a pre start alarm for example the battery will want to immediately recoup any lost charge The battery will take as much current as it has been set to take Because the current available from the intrinsically safe power supply is limited some planning is required when choosing a battery charging current for a particular VAA unit If the charging currents are set too high the VAAs closest to the power supply will take all the current they can leaving little current for the VAAs furthest away from the power supply These VAAs may never charge fully An example will help to illustrate this Example There are 31 VAAs connected to LINE 1 and a 14VDC 1A LS power supply is being used The battery charging current of all the VAAs has been set to 40mA Assuming all the batteries are fully charged a pre start alarm is sounded As soon as the pre start alarm stops all VAAs will try to draw 40mA from the line power supply The first 20 so VAAs may be able to draw at or near their set charging current leaving little current left for the last 10 VAAs Again some testing will need to be conducted in order to find the optimum charging currents Trending VAA battery voltages and currents over a period of time will help with this However 20mA would be a good starting point Setting VAA parameters 1 Goto the VAA Status page of the VAA you wish to program Press ENTER to enter the VAA Set Up page Figure 21 shows
50. ations can be chosen as shown in Table 108 Pre and end tones are made up of 17 TO three tones played in rapid succession These tones can be used to distinguish high priority 1 7sj2 voice messages from standard messages 26s TIP You can opt to have no pre tone and have and end tone selection 7 or have a pre tone and no end tone selection 14 or no pre or end tone at all selection 15 Using a PLC to control voice messages means that multiple messages can be linked together for example Pullkey tripped at being one message and Cut through 1 being another message In this instance you would not want an end tone after the first message and a pre tone at the beginning of the second messages so that the messages play seamlessly Table 108 Pre and End tone Combinations Number Frequencies Hz Frequencies Hz 0 508 724 1016 1563 1563 Pre 0 End VOICECOM USER MANUAL ISSUE 4 6 5974 16 1859159 Prece vend 7 Notes 185189 nore End 8 574 006 Notms Pre 0 ncEnd 9 106 74 89 Notms Pre 1 noznd 10 508 50 w T i 508 508 508 m 1250 74 1266 508 724 1016 906 724 008 14 15 15 Notones Notones noPre noEnd Other Message Menu Options The editor has several other tools that may be useful in creating and editing a Message Bank These can be found in the Message Menu or in the pop up menu that appears when the right mouse button is clicked
51. c Eu rf E Ef E VCA Relay Outputs to motor control DON NE NES PE NM NN S P C en circuit or PLC input 5000 ooo 5600 si eet UU a l s E IS Power Supply 1 Figure 1 VoiceCom system connection diagram VOICECOM USER MANUAL ISSUE 4 PC Software The Controller is supplied with the VCA Message Bank Editor Windows PC software The software enables the user to create edit and download voice message banks to the Controller A separate PC program is required for the recording of individual voice message audio files before the voice message bank can be created Modbus Most of the Controllers functionality can be controlled and monitored via a Modbus protocol connection This includes playing voice messages and reading VAA operational parameters of all connected VAA units This Modbus data can be used for trending via a PLC allowing for preventative maintenance by giving early indication of cable failures or VAA batteries that may be ready replacement The VoiceCom Amplifier VAA Overview Key Functions The VAA sounds pre start alarms and amplifies audio signals like voice messages and station to station communication Unlike other communication systems where pre start alarm and signalling tones are transmitted via the audio line the VAA generates all pre start alarm tones locally The VAA has four volume levels and two microphone gain levels that can be configured depending on the level of background noise The VAA also has a seven le
52. cation Line Interface Connections mme I S power supply 1 positive input Table 6 LINE 2 Communication Line Interface Connections OV supply line 2 Audio line 2 Call 2 Call digital line 2 VoiceCom LINE 2 Negative supply line 2 ere I S power supply 2 positive input V PS2 l S power supply 2 negative input DDEL VAA MODEL VAA DDEL VAA AUS Ex 03 3881X AUS Ex 03 3881X AUS Ex 03 3881X Ex ia 1 Ex ia I Ex ia I Serial No XXXX Seriol No XXXX Serial No XXXX EXCHANGE LOCAL FUNC SPEAK EXCHANGE LOCAL FUNC SPEAK T 0V 1 Audio 1 Call 1 V Line 1 0V 1 V PS1 VoiceCom communication line e UO OO J2 Figure 5 I S communication line interface wiring LINE 1 shown T 12VDC 18VDC l S Power Supply 12 VOICECOM USER MANUAL ISSUE 4 Note The l S power supply can either be connected to the controller terminals as shown in Figure 5 or to anywhere on the communication line to overcome the voltage drop caused by long lines Refer to VCA approval drawing VCOM Z 036 for l S power supply connection options I S Keypad Interface The intrinsically safe keypad interface allows an external VCA keypad module or suitable push buttons to be installed in the hazardous area when the VCA is installed in a flameproof enclosure or the VCA keypad is otherwise inaccessible Table 7 shows the l S
53. e voice messages to sound distorted When set to yes the VoiceCom communication line digital protocol is inhibited while audio is detected on the line The level of audio needed to turn off the digital protocol depends on the Audio Threshold setting Set this to yes if digital noise can be heard while messages are played or during VAA to VAA communication This is the level of audio that needs to be detected by the VCA in order for the digital communication protocol to be inhibited Setting this to 0 means that only a small audio signal will turn off the digital protocol Setting this to 7 will mean that a loud audio signal is required to turn off the digital protocol This is the number of VAA s that are connected to the LINE 1 This is the number of VAAs that the VCA should be able to communicate with If no VAAs are connected then this is set to None This is the maximum number of VAAs on LINE 1 that can fail to sound a pre start alarm and still allow the pre start to be successful A successful pre start alarm will Line 1 Pre start Warning Tone Line 1 Pre Start OK Threshold Line 1 Under Voltage Alarm Level Line 2 Number of VAA s to be Online Line 2 Service Factor Line 2 Pre start 0 to 7 Warning Tone Line 2 Pre start OK Current Threshold Line 2 Under Voltage Alarm Level Modbus Communication Baud Rate and Parity Modbus Communication Slave Address VOICECOM USER MANUAL
54. e been received Note the three X symbols indicating that VAAs at addresses 7 15 and 20 failed to confirm that they have sounded a pre start alarm 2 Line 1 20 VAA s Pow KOo TO OPo o PEPPP PXPPP PPPPX 3 Because the Service Factor is set to 3 we can tolerate up to Figure 34 three VAA failures 4 The OPo o graphic indicates that the pre start confirm relay is energised because the pre start alarm has sounded successfully 5 Once the pre start alarm input has been removed the Line Status page will revert back to its normal display showing a solid block for each VAA online 6 To view which VAAs confirmed sounding an alarm during the PODIUM NE last pre start press and hold the FUNC key The Line Status PSW RQo o OPo o page is shown in Figure 35 PPPPP P PPP PPPP Only the units that confirmed as indicated by the P are shown Figure 35 When the key is pressed any Mi symbols that change to symbols can be assumed to have failed during the last pre start alarm amp on NCA VOICECOM USER MANUAL ISSUE 4 CHAPTER 6 Creating And Downloading Voice Messages The VCA Controller has the capability of storing and playing up to 255 individual pre recorded voice messages These messages are created in the easy steps 1 Record and edit the voice message sound files on a PC 2 Create the Voice Message Bank using the Ampcontrol Voice Message Bank Editor PC program provided 3 Download the message bank into t
55. e for the line sounding the alarm When a pre start alarm is active it is possible to see exactly which VAAs have given confirmation and which ones have failed This page also shows that state of the confirm relay for that line This process is illustrated in Table 16 1 On the Line Status page a flf indicates that a VAA is online at that address 2 When a pre start alarm is initiated the Bg symbol turns to an o for all 31 of the VAA addresses This o remains on the display until the confirmations are received 3 When the VCA receives the confirmations from all or most of the VAAs the o turns to either an X or a P The P indicating that that VAA has confirmed sound the alarm and the X indicating that it has not This display remains while the pre start input is asserted Once the pre start alarm input is de asserted the Line Status display reverts back to showing the solid blocks representing each VAA VOICECOM USER MANUAL ISSUE 4 Line Status page showing 20 VAAs on LINE 1 at 2 Line 1 20 VAA s addresses 1 to 20 before the pre start is initiated PSW RQo o OPo o The pre start alarm is initiated but no VAA gt Line 1 20 VAA s confirmations have been received Note that the PSW RQo o OPo o request input is closed as shown by the RQo o 00000 00000 00000 graphic The confirmations have been received 19 of the 20 an a 20 waa VAAs have confirmed with the VAA at address 8 PSW RQo o OPo o indicating a failure The confirmatio
56. e the Line Interface Board amp the IS Keypad Board The rest of the VCA is unspecified The Line Interface board provides an interface to two separate voice data lines Line 1 amp Line 2 and an interface to the Voice Data Barrier Fuse protected zener diodes clamp the signals to from the main part of the VCA Opto couplers amp infallible audio transformers provide isolation between the two I S lines Signals on the L S side derive their power from the line which is supplied by a separately certified LS power supplies one per line The IS Keypad Board 1s intended to allow external hazardous area push buttons to be scanned by the VCA to control it s internal LCD Display menu system Infallible resistors and opto couplers segregate the LS inputs from the rest of thc VCA The I S side power is derived from a certified I S supply which may also be one of the line power supplies The design of the equipment is such that it offers an P20 protection to all safety components Issued by Test A U S T A A 919 Londonderry Road Londonderry NSW 2753 Safe Phone 02 4724 4900 Fax 02 4724 4999 STANDARDS AUSTRALIA TN E Page 3 ol eoa Standards Australia Quality Assurance Services Poy Limited A B N 67 050 611 642 VOICECOM USER MANUAL ISSUE 4 Certification of MEM cM A A 255 Soe Ll Standards Australia Quality Assurance Service Ex 03 3880X Addendum to Certificate NO Conditions of
57. endix B for the location of these digital output flags However they can be wired if Modbus communication is not available or for redundancy The function of each digital output is as follows DO1 asserted when a Line Fault occurs Line Faults include faults such as the number of VAA communicating with the VCA being less than or greater than the number of VAAs online setting VAA Reply Alarm or two or more VAA have the same address VAA Address Clash Refer to the VCA Operation and Troubleshooting chapters for more information on Line Faults DO2 asserted when the FUNC button on a VAA is pressed This output remains on for 5 seconds after the button is pressed This could be used to trigger a function such as re playing are the currently active voice messages DO3 asserted while a voice message is playing This output can assist the message control device such as a PLC with voice message queuing DOA this output current has no function 110VAC Power Inlet and Relay Outputs The RELAY PWR header contains the terminations for VCA power supply connection and relay outputs The following table describes the functions of the input output terminals CAUTION ELECTRICAL SHOCK HAZARD Isolate the 110Vac supply before connecting or disconnecting Terminal Punotion 110V Mains supply connection 110VAC 50Hz COM1 Relay 1 common Energises while the controller is healthy normally open and
58. erminal Function Speaker 1 positive Speaker 1negative Speaker 2 positive Speaker 2 negative NOTE The 4 way speaker terminal allows for the connection of two speakers Wire length between the speakers and the VAA module should not exceed 300mm The connection wire must be a minimum of 0 1mm in diameter and the wire insulation thickness must be a minimum of 0 25mm as specified in the VAA Certificate of Conformity Aus Ex 03 3881X Take careful note of the speaker polarity when wiring 16 VOICECOM USER MANUAL ISSUE 4 CHAPTER 3 VCA Operation The VoiceCom Controller version A or VCA as its name suggests is the master controller of the VoiceCom system From the VCA the VoiceCom system can be easily configured and interrogated It controls the operation of the pre start alarm and it stores and plays pre recorded audio messages The VCA also allows for the VoiceCom system to be interfaced with a control system such as a PLC which provides remote monitoring The VCA s operation is best explained by looking at the all of the VCA status and configuration display pages HMI Features Front Panel The front panel of the VCA includes e 4line 20 character backlit LCD e 7 button keypad e Multicolour indicator LED green orange red AMPCONTROL Figure 10 VCA Front Panel 1 Display backlit LCD 4 Key Function used to view last pre start alarm operation 2 Keys navigate through menu 9 ENTER Key used for ch
59. he VCA Recording and Editing Voice Messages The voice messages can be recorded using a PC with a sound card or similar audio input output hardware A myriad of PC programs are available that can record and edit sound files The main requirement is that program has the facility to save audio files as 16bit 44kHz WAV audio files which most do We have successfully used a PC program called GoldWave which has a comprehensive set of audio recording and editing features GoldWave can be downloaded from on of the many internet shareware and freeware download web sites Refer to your PC manuals for information on setting up audio hardware The procedure for recording and editing voice messages will vary depending on the audio editing application chosen However below are some tips that may help with this process e Decide on the voice messages required for the specific installation and produce a printed script with the text of the voice messages e Instead of recording and saving one message at a time record several message at once with a pause in between each message Many audio editors will let the user to easy cut portions of a recording and save them as individual files e This might seem obvious but try to conduct the recording session in as quiet an environment as possible Many microphones are sensitive enough to pick up noise from the air conditioning PC fans and disk drives e f possible select a voice that is clear sounding fem
60. iation and are active for as long as the input is asserted The digital inputs can be wired in several configurations depending on the voice message initiation mode chosen The connection options are listed in Table 1 Table 2 and Table 3 The three modes are as follows 1 Digital Inputs Modbus In this mode asserting digital inputs 1 to 12 plays messages 1 to 12 respectively Messages 13 to 255 are initiated via the Modbus communication link 2 Strobe In this mode all messages 1 to 255 can be played by setting up the voice message address as an eight bit binary number using digital inputs 1 to 8 and then using digital input 9 as a strobe to initiate that message This allows relay logic to initiate voice messages if no Modbus communication facility is available 3 Modbus In this mode all messages 1 to 255 are played via Modbus Asserting digital inputs 1 to 12 will not initiate voice messages VOICECOM USER MANUAL ISSUE 4 NOTE Pre start alarms cannot be initiated via Modbus The PSR1 and PSR2 inputs must be used to initiate pre start alarms on Lines 1 and 2 Table 1 Connections for Digital Input Modbus Mode Terminal DH to DI12 Momentarily apply 24VDC edge triggered inputs to play voice messages 1 to 12 respectively PSRI Apply 24VDC to input and hold to play pre start alarm down line 1 PSR2 Apply 24VDC to input and hold to play pre start alarm down line 2 OV DI OV common for all digital inputs from negative side of
61. installation and wiring of Intrinsically Safe VCA interfaces The controller has two intrinsically safe communication line interfaces labelled LINE 1 and LINE 2 Each interface has six terminals four for connection to the VoiceCom communication line and two for connection to an Intrinsically Safe power supply Each line can support a maximum of 31 VAA units depending on the cable length and power supply used 41 VOICECOM USER MANUAL ISSUE 4 Note The output parameters of the l S supply must match the input parameters of the VCA and the VAA Refer to VCA Certificate of Conformity AUS Ex 03 3880X and VAA Certificate of Conformity Aus Ex 03 3881X for input parameters The VoiceCom intrinsically safe communication line consists of four cores commonly referred to as OV Audio Call digital communication signals and V Line The OV and V Line cores provide voltage for VAA battery charging The Audio line carries the system audio signals The Call line is the digital communication link between the controller and VAA units This digital communication line runs the VoiceCom digital protocol which allows the VCA to retrieve VAA operating parameters such as voltage and current values Table 5 Table 6 list the I S communication line interface terminations and Figure 5 shows the terminal wiring for LINE 1 The wiring for LINE 2 is identical NOTE Each communication line must be powered by a separate l S power supply Table 5 LINE 1 Communi
62. l safety requirements and performance other than those included in the Standards listed above The equipment listed bus successfully met the examination and test requirements as recorded in Tes short No AS aetate TROSST0 File Reference TestSafe 2002 021310 1 Signed for and on behalf of issuing authority Laboratory Systems Manager TestSafe Australia Position 2 04 2003 Date of issue Ex 03 3881X Ubis certificate and schedule may not be reproduced except in full This certificate is not trausferable and remains the property of Standards Australia Quality Assurance Services and must be returned in tbe event of its being revoked or not renewed issued by Test F Safe 919 Londonderry Road Londonderry NSW 2753 Phone 02 4724 4900 Fax 02 4724 4999 STANDARDS AUSTRALIA RE Patet or oomen Standards Ausrralia Quality Assurance Services Po Limited A B N 67 050 611 642 VOICECOM USER MANUAL ISSUE 4 Certification of A erm ndards Australia Q Certificate No AUS Ex 03 3881X Issue 0 Date of Issue 2 04 2003 Certified Equipment The Voice Amplifier Type A is intended to be used on longwall face and conveyors in underground coal mines It provides intercom type voice communication between units and audible pre start alarm tones The equipment has a four button keypad seven segment LCD display controlled by a low power microprocessor and is powered by a 19 V LS certificd power supp
63. laying For example while message 20 is playing message 100 can be written to Modbus address 0 zero Message 20 will play to completion immediately followed by message 100 Joining messages together Joining messages together can be prudent when there are a number of common messages that can apply to a LU number of locations conveyor belt stations for example A belt station could be tripped isolation requested or remotely isolated These could be recorded as separate messages Then a series of messages could be recorded I Gf like at station 1 at station 2 etc These messages can be joined together played one after the other to form a complete message Take a conveyor with 30 belt stations If individual messages were recorded 90 messages tt would be required tripped at station 1 isolation requested at station 1 belt isolated at station 1 etc for every station However using the joining method would only require 33 messages to be recorded Reading VAA Parameters The following VAA data can be read via Modbus e Line Voltage e Battery Voltage e Battery Current e Charging Current Setting e Volume Setting e Audio Threshold Setting e VAA Serial Number VOICECOM USER MANUAL ISSUE 4 This data has been divided into two Data Banks Bank 0 zero and Bank 1 Each bank contains four bytes of data These banks are Battery Voltage Threshold 3 NE Battery Curren
64. lows control of voice messages and reading to system status by a PLC 110VAC operation Telephone exchange interface External l S keypad interface VAA features Intrinsically Safe IP66 ingress protection rating when enclosed in an Ampcontrol stainless steel housing Powered using a sealed lead acid battery for high capacity and longer life LCD display showing operational status values such as line voltage battery voltage and battery current Durable 4 button membrane keypad Dust and moisture protected microphone Connection for two external speakers Address volume microphone gain and charging current configurable at the VAA as well as at the VCA Compatible with most existing voice communication systems Applications e Long wall operations e Conveyors e Hazardous area communication VOICECOM USER MANUAL ISSUE 4 The VoiceCom Controller VCA Key Functions The Controller s primary functions are to initiate and confirm pre start alarms and play pre recorded voice messages The system s operation can be configured and monitored via the Controller s easy to navigate menu system Users already familiar with Ampcontrol s Motor Protection and Integrated Protection Relay products may recognise the menu structure Controller Terminals The Controller has a number of input output and communication interfaces to suit most applications 12 edge triggered digital inputs for voice message control 2 pre start alarm initiation digital inputs
65. ly and a 6 V rechargeable battery pack The battery pack including its safety components is completely encapsulated other than the external connectors This allows the battery pack to be removed whilst in the hazardous area The equipment is mounted on a stainless steel plate that shall be fixed in a cutout of an external IP55 enclosure made of materials suitable for Group I The stainless steel plate is mounted to the rest of the VAA assembly with a keypad membrane in between and using four allen head screws with inside and outside nylon washers The VAA assembly has been assessed as capable of providing an ingress protection not less than IP55 The design of the equipment 1s such that it offers an IP20 protection to all safety components even when not fitted inside the external IP55 enclosure Conditions of Certification E It is a condition of safe use that the following input paramcters be taken into account while installing this apparatus INPUT PARAMETERS GND V AUDIO and Call lines at connector JB2 Maximum Input Voltage U 19 Y Maximum Input Current l 3A Maximum Input Capacitance C Negligible Maximum Input Inductance L Negligible Issued by Test A U T A A 919 Londonderry Road Londonderry NSW 2753 Safe Phone 02 4724 4900 Fax 02 4724 4999 STANDARDS AUSTRALIA NN A dag 3 OF AA Standards Auscralia Quality Assurance Services Pty Limrred M 67 050 611 6 12 did VOICECOM USER MANUA
66. n Page 1 Number of last message played 9 Pre tone used with message see Table 10 2 Message duration 6 Digital communication status indicator appears as a spinning bar 3 Name of last message played 7 Audio level detected on lines 4 Audio format message saved as VOICECOM USER MANUAL ISSUE 4 VCA Message Bank Download Page Level 1 This page shows the PC to VCA communication and Message Bank download status when the VCA is connected to a PC running the Voice Message Bank Editor program The display needs to be put on this page in order to download a voice message bank The use of this page is described in more detail in the chapter titled Creating and Downloading Voice Messages 1 VCA Message Bank Non Mocs San A te Bata Rates S ode tre Figure 13 Voice Message Download Page SHORTCUT When on this page pressing the ENTER key will take you to the Message Bank Serial Baud Rate configuration page from where the RS 232 port s baud rate can be changed Line Status VAA Status and Programming Pages Level 2 and 3 Menu level 2 shows status information for communication LINE1 and menu level 3 shows status information for communication LINE 2 The Line Status Page gives an overall view of the current state of the communications line By moving to the left or right on either of these two levels you will find current status for each VAA connected to that line VAA address settings configuration pages can also be accessed
67. n relay has closed PPPPP PPXPP PPPPP as indicated by the OPo o graphic But one failure was detected so why has the confirmation output closed The Service Factor was set to a value of one or greater allowing the system to tolerate the VAA at address 8 failing Table 16 PSA Confirmation Process Verifying the Pre start Alarm Later From the Line Status page the outcome of the last pre start alarm operation can be viewed for fault finding purposes 1 Pressing the FUNC key will show which VAAs confirmed however it does not explicitly show which VAAs failed 2 Press and hold the key The E symbol will change into either a P or a 3 If the J changes to a P this indicates that that VAA confirmed sounding the last pre start alarm If the lj turn to a this indicates that that VAA failed to sound the pre start alarm correctly NOTE Pre start alarm operational data as described above can be read via Modbus Refer to the Modbus chapter for more information VOICECOM USER MANUAL ISSUE 4 Pre start Alarm Operation Examples Example 1 a successful pre start alarm The system e VAAs connected 20 2 fino 20 a S e of VAA s to be online 20 PSW RQo o OPo o e ServiceFactor VAA s offline 0 E ii A y A E ii a li a E B i i a ILLI 1 Figure 31 shows the Line Status page before the pre start Figure 31 alarm Is initiated 2 A pre start alarm is initiated on LINE 1 by asserting the PSRI digital input as
68. nar narran 4 A Pertanto 4 VCA f jA 4 A ee ENTE 4 APC Si E 4 The VoiceCon Controller VEA asia tai 5 KOV FUNCIONS rea At A Ad Aarau Ped Ana ena 5 Gontroller Mee MN AS a a 5 FC OM WAN omana 6 MOQDUS PE a 6 The Volee Com Amplifier VAA OVERVIGW aici diablos orti dn Dc ape dab boe ot DO bu b c ae RC NR 6 KOV FUNCIONS i E ee 6 An PP ta E bars 6 DI E a 6 OG AUS ORNO n A 6 Advanced Battery Management cc ta ia 6 CHAPTER INSTAELA HON ie aE tuts T VCA PAVSICALNS talla e T VCA COMMEGUOINS ANIC VITTITIO neee N 7 Digital Mpi A i hates ueres 8 Piata OUMU i dat 10 110VAC Power Inlet and Relay QUID oli 10 CaSe Ea eao e A 10 Data COmmuni atlom PRONS mcer ta u daciascieeeal cansaceieerealieadectoteleetetcapanaeebateimensceneeaees 11 Communication Line Tand 2 o Inte maces 9 cca bae his arcta ipn d tA 11 o Kevpad linea 6 Benet o cd eaten ee cte ue d etu 13 l S AUG OMG acantilado a 14 SR E y PPP R S EM 14 e cet ahh ae alk Aa esiti om cia eta titel 15 VAA Connections ANG WINING 25 2 tdt 16 CHAPIER S VCA OPERATION coccion iaa did 17 A M HERE 17 wien em 17 Displav ana Main Menu Page ara antra it re Coco ctt Gotta a d arst os tede um Pucca us 18 PY SBN U ST e AA PA PER 19 NO 2 i Ja E 19 Voice Message Information Page Level 1 nnns 19 VCA Message Bank Download Page Level 1 c cscsscsc
69. ncononccononononnnononncononncononnnonncnnonnrononos 92 DONNA A 92 Ue o En 94 CHAPTER 7 TROUBLESHOOTING coord 55 APPENDIX A COMMISSIONING i ioa aede te it ts 57 VAS CONTOU AO e ea 57 Address SOLID onain E tilda 57 Volume Microphone Gain and Audio eso aaa 58 Charging e Tr 58 VGA Line COMUN a 59 Presta Alarm Conquerors lar 59 SONICO ACIO ERR REN EE E P E An 99 EEN O A e a 60 FIE SIAMOK Cuentos 60 o TA 61 APRENDI B MODBUS ii a 63 A A An 63 VCA Modbus Read and Write FUNC IONS ocoooonccnccconccnconconoonnonacconcononnconoonoononnonnonco nor nco noo nnns 63 Initiating Voice Messages and Voice Message Control ccocccccnccccccococanonoononnoncrnnononaconcnnrononncnnononnons 63 T initiate a VOICE MESSAGE L sa kt a aa ai aA EE E 64 OIODDIBO a Voice Message ciao 64 MES age UI eii deals 64 JOINING MESSAGES NN e g g 64 Reading YAA AAC LOIS ts tt a a a 64 A ee eee ee dint eer ene eee 64 APPENDIX C APPLICATION NOTES rata i c E T2 CONTENTS VOICECOM USER MANUAL ISSUE 4 C mMm nication Line Configurations tenian uta 72 A A o ta a ia 72 CONVOY O tin 72 onse Aceh eio 72 PAUGIO MLCT AC ES Audo Bam sa 72 SCADA Dis 6 Fo ii ia eee eee eee 72 VOICE MESSAGE SA A An a ka 72 LOGGING VOICE MESS AQ S a A iii ia utente aetna a tnd dns te teg e bot td ades 72 APPENDIX D MENU MAP oh at 73 APPENDIX ES PARTS LIS doc aa 74 APPENDIX F SPECIFICA HONS ii lt ecuneesceseneeetert 75 jeu E M 75 TONGS IT
70. nd the VCA This should cause the Send and Receive boxes to flash green as shown in Figure 42 The VCA connection status box at the bottom left corner of the main window 1 VCA Message Bank should also turn green and read Connected to indicate that the connection a aie aoe has been established again shown in Figure 42 At the same time the VCA Baud Rate 115k2bos Message Bank page will display the text Rec Idle Command indicating that it communicating with the PC shown in the figure on the right mj Connected VCA Figure 42 PC to VCA Communication Indication 53 VOICECOM USER MANUAL ISSUE 4 10 If you are unable to establish a connection check that steps 1 to 9 have been followed Check Communication cable wiring VCA display is showing the VCA Message Bank page Lock input is asserted Serial COM port and Baud rate are set correctly 11 Having established communication the Message Bank can now be downloaded to the VCA To start the download open the VCA menu and select the Download Message Bank to VCA option The VCA connection status will change colour from green to yellow and display Busy A download progress bar will also appear shown in Figure 43 VEA VEA E Memory 1307 47 k Progress 31 0 IMM Figure 43 Download Progress Bar The VCA Message Bank page also displays a download percentage value as a Message Bank is downloaded However this value reflects the
71. ng current e VAA address Enter Setup Mode A special key sequence is required to enter the VAA setup mode Some practice may be required To enter Setup mode follow the procedure below Press and hold the VAA s SPEAK and FUNC buttons at the same time SPEAK After a few seconds the VAA units LCD display will show the text SETUP F The F will begin to flash slowly disappearing for one second appearing for one second disappearing again for one second and then appearing again for one second Press and release the FUNC key in sequence with the flashing F Release the FUNC button when the F disappears and press the FUNC button when the F reappears NOTE The SPEAK button must remain pressed If the correlation between the button presses and the flashing F is close enough access to Setup mode is granted The display will briefly show the VAA firmware version before displaying the first VAA setting The SPEAK and FUNC buttons can then be released NOTE The VAA display will quit out of Setup Mode if no keys are pressed for 5 seconds and any changes will not be saved Continually pressing the CALL EXCHANGE button will reset the timer and will keep the VAA in Setup Mode Changing the Settings 1 Press the CALL EXCHANGE button to scroll through the 5 settings 2 Press the FUNC button to increase the value or the CALL LOCAL button to decrease the value 3 NOTE The Setup Mode will time out if there are no key presses for 5 seconds
72. nication line and each VAA is given a unique address Setting two VAAs to the same address will cause an address clash VAA Battery Pack Battery Pack Features e 6V 1 2Ah Sealed Lead Acid SLA battery e Integrated battery charging circuit e 19Vdc to 11Vdc I S supply input for battery charging e 6 8V to 5 9V output to VAA e Auto shutoff over discharge protection e Sleep mode for storage VOICECOM USER MANUAL ISSUE 4 Removing and Connecting Battery Pack from Amplifier Module Removing 1 Unscrew the two captive allen head battery pack retaining screws using a 2 5mm hex head tool 2 Gently pull the battery pack away from the amplifier module at the 10 way connector to disconnect the battery pack The battery pack s securing hooks will bend slightly 3 Slide the securing hooks from the mounting points on the top of the amplifier module Connecting 1 Slide the battery pack securing hooks on to the mounting points on the top of the amplifier module so that they are clasped securely 2 Gently press the battery pack connector into the header on the back of the amplifier module 3 Screw the two captive allen head battery pack retaining screws using a 2 5mm hex head tool VAA Battery States Voltage and Charge Table 15 VAA Battery States Low Charge Battery Voltage 5 9V to 6 1V Battery Current n a NOTE If the charging current setting is set to 40mA the battery will take up to 40mA approximately
73. nload Open the VCA menu and select the Connection Settings option This will open the Setup Communications Setup Communications x CA Port 1 y Baud 115200 Connected Figure 40 Setup Communications window Send Recelwe window shown in Figure 40 The Port selection sets the serial COM port on the PC used to connect to the VCA Most PCs usually have one or two serial COM ports and they should be labelled If the PC only has one COM port this port is usually referred to as COM 1 Check that the Port number is set to the COM port to which the VCA is connected NOTE Some newer PC laptops do not have a serial COM port A USB to serial adaptor can be used to connect to a VCA Check that the Baud rate communication setting in the Setup Communications window is set to the same rate as the VCA as shown in Figure 41 The VCA s serial baud rate is displayed on the VCA Message Bank page By default this should be set to 115 2kbps the maximum baud rate supported by most PC serial ports The baud rate can also be set to 57 6k and 28 8k Some PCs may be equipped with a high speed serial port that supports a baud rate of 230 4kbps Both the VCA Message Bank Editor and the VCA can be set to this higher baud rate Setup Communications YCA 1 VCA Message Bank Fort x No Msgs Ba LO RA Baud PN Figure 41 Setting the Baud Rate Click the Connected check box to establish communication between the PC a
74. nnect the VCA to a local intrinsically safe earth The I S earth should be a direct connection and should not be shared with other devises A minimum of two 4mm cores should be used NOTES 1 Refer to Certificate of Conformity AUS 03 3880X for the correct installation and wiring of Intrinsically Safe VCA interfaces 2 Thel S Earth should not be confused with the VCA Case Earth These earths should be kept separate VOICECOM USER MANUAL ISSUE 4 VAA Physical Installation The VAA comes in its own stainless steel enclosure The VAA stainless steel IP66 enclosure includes two speakers and gland entries p n E09100 Other entry configurations can be accommodated The VAA is also available as a panel mountable module p n E08831 for installation into an existing enclosure or panel door shown in Figure 8 See drawing VCOM A 040 for a panel cut out template with dimensions for the VAA and speakers AMPGOANTRGL m AMPLIFIER A cec MODEL VAA a c c AUS Ex 03 3881X Ex ia Serial No XXXX CALL CALL EXCHANGE LOCAL FUNC SPEAK JL J lO O O M E Figure 7 VAA Speaker Enclosure p n E09100 VAA Front VAA Side VAA Back L EXCHANGE LOCAL FUNC SPEAK JUUL O O 74 AKERS G Figure 8 VAA module p n E08831 The VAA module consists of the following items 1 VAA amplifier
75. noise is amplified for extended periods the VAA battery charge can become depleted causing the battery to shut down Increasing the audio threshold will prevent the VAA from unnecessarily amplifying any noise Note however if the threshold is set to high legitimate audio from other operators may get cut off These settings can also be adjusted at the VAA The procedure for changing settings at the VAA can be found in the VAA Operation chapter under the section VAA Setup Mode Some testing may have to be done to find the most suitable settings for the particular installation Charging Current The procedure for setting the VAA charging current is the same as setting the volume mic gain and threshold The default charging current is e Charging current 30mA For installations with many VAAs connected over a longer distance this value may have to be lowered The amount of charging current available largely depends on output of the power supply As an example consider the following installation 58 VOICECOM USER MANUAL ISSUE 4 e 500mA output power supply e 20VAAs e 4QmA charging current Over a period of sustained use possibly after several pre start alarms all 20 VAAs will try to draw 40mA from the power supply The VAAs nearest the supply will take as much current as is available leaving little or no current for the last few VAAs These last VAAs will only get an adequate amount of current once the first VAAs stop taking cur
76. normal Relay 1 N C closed contacts De energises if a VCA or message bank memory fault Relay 1 N O occurs See the Troubleshooting section COM2 Relay 2 common Relay 2 N C Relay NO PSC1 Relay 3 common Normally open contact energises when Line 1 pre start alarm has PSC1 Relay 3 N O successfully sounded pre start alarm Line 1 confirmation output PSC2 Relay 4 common Normally open contact energises when Line 2 pre start alarm has PSC2 Relay 4 N O successfully sounded pre start alarm Line 2 confirmation output oee the Specifications section of this manual for detailed information on the specifications of digital inputs digital outputs and relay outputs Case Earth An EARTH connection point is provided adjacent to the 110Vac terminals for the connection of the mains supply earth VOICECOM USER MANUAL ISSUE 4 Data Communication Ports RS 232 Message Bank Download The controller has two data ports The RS 232 port is used to connect the VCA to a PC for the downloading of the Voice Message Bank The Voice Message Bank is a single file that contains all of the pre recorded voice messages This file is compiled and downloaded using the Voice Message Bank Editor PC program provided with the VCA This function is normally carried out before the controller is installed and so it is not necessary to wire these terminals However the RS 232 terminals could be wired to a standard female DB9 9 way type socket mounted within the cubicle
77. of VAAs that are currently installed This setting is found on menu level 6 and is set at the time of commissioning or whenever a VAA is added or removed from the line More information about this setting can be found later in this chapter and in the Commissioning chapter Digital Communication Indicator While the digital communication protocol is running a spinning bar will appear on the right hand end of the top display line Polling Address Number While the digital communication protocol is running the VCA does a round robin scan of every VAA address 1 to 31 This takes approximately 7 seconds This number shows which address is currently being scanned and will count rapidly up through the address range Pre start Request Input and Confirm Output State Indication The second line of the display shows the current state of the Pre Start Alarm Request PSR digital inout and the Pre start Confirm PSC relay output for this line VAA Key Press Indication There are four A symbols which will appear on the right hand end of the second line one for each VAA keypad key From left to right these blocks indicate the CALL EXCHANGE key CALL LOCAL key FUNC key and SPEAK key When a VAA key is pressed the respective block will appear NOTE If an address clash has existed for several digital round robin scans it will take several more scans once the clash has been rectified before the C symbol disappears from the line display SHORTCUT
78. pends on e The number of VAA supposed to be online of VAA s to be online setting e The number of VAAs that confirm sounding the pre start alarm e The Service Factor ServiceFactor VAA s offline setting The number of VAAs to be online setting should be set to the number of VAAs that that been installed on the respective communication line LINE 1 or LINE 2 The Service Factor allows for some of these VAAs up to 5 to fail to confirm sounding the pre start alarm and still allow the confirm relay output to close 1 The VCA receives confirmation from the VAAs 2 The minimum confirmations the VCA must receive equals the number of VAAs supposed to be online minus the Service Factor min confirmations VAA s to be online ServiceFactor H VAA s offline a If the number of VAA confirmations received by the VCA is greater than or equal to the minimum confirmations value the pre start alarm is successful The VCA Main Menu page will display the text PSW Healthy The confirm relay PSC1 or PSC2 will close b If the number of VAA confirmations received by the VCA is less than the minimum confirmations value the pre start alarm has failed The VCA Main Menu page will display the text PSW Active until the pre start request input is removed or the pre start is blocked The confirm relay PSC1 or PSC2 will not close Verifying the Pre start Alarm While Active Verifying the pre start alarm operation is best done from the Line Status pag
79. percentage of VCA Message Bank memory used not the percentage of the Message Bank that has been downloaded as the progress bar does For example take a Message Bank file that is 8Mbytes in size Remember that the VCA Message Bank memory is 16Mbytes This Message Bank would occupy half of the VCA s Message Bank memory The VCA Message Bank page would display a value of about 50 just before the download completed Do not be alarmed by this The downloaded has completed successfully Uploading The procedure for uploading a Message Bank from the VCA to a PC is almost the same as the one for downloading Follow steps 1 to 10 as described for downloading a Message Bank Once communication has been established follow the procedure below 1 To start the upload open the VCA menu and select the Upload Message Bank from VCA option A blank Message Bank file will open and the upload will begin Once the upload has completed a pop up message will appear saying VCA upload completed Click the OK button to acknowledge the message The audio messages contained in the Message Bank will appear at their set message numbers It is best to save the uploaded Message Bank straight away Open the File menu and select the Save As option A standard Windows dialogue box will appear The Message Bank should be given a meaningful name and saved in a known location on the PC The Message Bank can now be modified as required New audio messages can be added o
80. r existing message can be changed VOICECOM USER MANUAL ISSUE 4 CHAPTER 7 Troubleshooting VoiceCom system Faulty VAA unit Isolate individual unit and replace Constant digital noise on line VCA has incorrect settings Adjust VCA settings to turn digital comms off with audio Thresholds on VAA units to Adjust threshold settings on the VAA units low emitting the digital noise ua messages Incorrect settings on VCA Check message initiation mode Wiring issues any of the following can cause VoiceCom system faults e Spare cores on line not earthed at one point e Shield not earthed at one point e Spare cores not continuous e Shield not continuous e Shorting of any 4 voice com system wires VOICECOM USER MANUAL ISSUE 4 Individual units Battery Replace battery Nil speaker output Faulty speaker Replace Speaker Battery Replace battery Nil microphone Out of range current Battery Replace battery reading Out of range voltage Battery Replace battery Battery Replace battery Blank LCD Clicking sound when speak Bate REpIaeo aon VAA setting is not in correct mode VCA or DAC Adjust settings at VAA VAA unit not showing as on line at VCA Battery Replace Battery VOICECOM USER MANUAL ISSUE 4 APPENDIX A Commissioning The following is a guide to aid the commissioning of the VoiceCom system The commissioning process involves the following actions 1 VAA configuration 2 VCA line configuration 3
81. rance Services and must be j returued in tbe event of its being revoked ar not renewed Issued by Test I Safe TOR 919 Londonderry Road Londonderry NSW 2753 Phone 02 4724 4900 Fax 02 4724 4999 STANDARDS AUSTRALIA 5 Aa Page Bb audes Standaels Australia Quality Assurance Services Pey Limited A B N 6 0506 6101 612 VOICECOM USER MANUAL ISSUE 4 Certification of Certificate No AUS Ex 03 3880X Issue 0 Date of Issue 2 04 2003 Certified Equipment The Voice Control Type A or VCA is a controller for Ampcontrol s Voice Communication Pre start warning system which is mtended to be used on longwall faces and conveyors in underground coal mines The VCA outputs audio signals from a pre recorded voice message bank on to two LS signal lines and controls digital communications using these lines The digital communications allow the VCA to imtiate and monitor pre start warning tones generated by separately certified amplifier units as well as gather monitoring information The VCA has various digital imputs outputs as well as serial ports to allow PLC amp PC communications An audio I O port ts provided to allow the VCA to connect to a separately approved I S Voice data Barrier The VCA has a sheet metal case with a membrane keypad on the front It is intended to be housed in a safe area The VCA confines the LS critical parts to two PCB s with their associated connectors and terminals These two PCB s ar
82. rent from the line In this example it is recommended that e The charging current settings on all VAAs are set to a low value less than 20mA or e The VAAs nearest the power supply are set to a low value and the VAAs furthest away are set to 40mA The VAAs nearest the supply will always get current they require leaving some of the last VAAs VCA Line Configuration The number of VAAs to be online setting sets how many VAAs should be connected to that line This setting is found on menu level 6 and must be set for each line This should match the number of VAAs that have been physically Tine ane ee installed If the VCA sees more or less than this value an alarm is raised If only MS o la HR 210 LINE 1 is in use the number of VAAs to be online for LINE 2 should be set to none 6 MCA Configuration Pre start Alarm Configuration There are three settings that must be configured before using the pre start alarm All these settings are found on menu level 6 for LINE 1 and LINE 2 These are e Service Factor e Pre start Warning Tone e Pre start OK Current Threshold Service Factor This parameter sets the maximum number of VAAs that can fail to sound a pre S WC Coca cin Start alarm but allow the pre start alarm for that line to still be successful When the pre start alarm is successful the pre start confirm PSC1 2 relay will close Line 1 ServiceFactor F VAA s offline 3 Example LINE 1 has 20 VAAs connected to it and
83. rogrammed to address 1 by default VAA Status Pages The VAA Status pages are found on the same level as the Line Status page They are accessed by pressing the keys as shown in Figure 19 Dose E NS AS ZO mn E SIND 2 inl UNA SU SIM PSW RQ o o OPo o Mili me do 2007 Teneo Vline V Thr PTT TT PRON Wisi A Eli ye Sy o1 1 Iipat Limes Tch 20 lbee Epsum NOTE A status page is shown for every VAA address regardless of whether a VAA is programmed to that address Figure 19 and communicating with the VCA The right most display in Figure 19 shows the status page for address 31 No parameters appear indicating that there is no VAA is programmed to this address or this VAA is not communicating with the VCA VOICECOM USER MANUAL ISSUE 4 The VAA Status pages show the current operational status and programmable settings for each VAA connected to the line Figure 20 shows the status page for a VAA with serial number 00100 on Line 1 programmed to address 1 DI LS OO les doe Mb p s Oto Vol e klima en 2 Figure 20 VAA Status Page 1 Menu level 7 VARA battery current positive value indicates charging current negative current indicates current being drawn from battery 2 Line number Line 1 shown here 8 Amplifier threshold setting user programmable 3 VAA address number address 1 shown here 9 Microphone gain and volume setting user programmable 4 VAA serial number matches number engraved 10 Maximum batter
84. s VCA Create Message Bank on other PC and save on networked file server Have Message Bank Editor program loaded on local PC Run Message Bank Editor and download Message Bank e Connect VCA via serial to Ethernet converter and load Message Bank from networked PC using serial port replicator s w or h w VOICECOM USER MANUAL ISSUE 4 APPENDIX D Menu Map LEVEL 1 MAIN MENU AUDIO MSC MSG BANK MAIN PAGE INFORMATION DOWNI MAN LEVEL 2 LINE 1 STATUS VAA ADR 1 VAA ADR 31 INF 1 GTATI IS MW QTATIIQ SA ADR VAA NEAR VAA VOLUME 8 VAA AUDIO SA Ip NEAR IRRENT MIC GAIN THRFSHNI n oe RN LEVEL 3 LINE 2 STATUS VAA ADR 1 VAA ADR 31 INF 2 QTATI IS STATIIS LEVEL 4 MOBUS COMS MORI IS LEVEL 5 RELAY DIGITAL DIGITAL I O AI ITPI ITS AI ITPI ITS INIPI ITS LEVEL 6 MSG INITIATE PLAYBACK DIGITAL COMS DIGITAL COMS Confiaurati MONE VAI LIME TI IBN OFF TIHAI n LINE 1 VAAs LINE 1 SVC LINE 1 PSW LINE 1 PSW ONI INF FACTOR TONF THREQHDI n LINE 1 UNDER LINE 2 VAAs LINE 2 SVC LINE 2 PSW VAI TAGE ANI INF FACTOR TONE LINE 2 PSW LINE 2 UNDER MODBUS BAUD MODBUS THREQHDI n VAI TAGE amp PARITY SI AVF ADR MSG BANK D L RAIIN RATE VOICECOM USER MANUAL ISSUE 4 APPENDIX E Parts List E08588 VCA E08985 VCA Remote Keypad E09441 VoiceCom Audio Barrier type NB8 5AC E09100 VAA Stainless Steel Speaker Enclosure with Gland Entries E08831 VAA Battery pack E08504 VAA Battery Pack E9400 RS 232 VCA to PC message bank download serial cable VOICECOM
85. s a VCA memory error or Message Bank processor fault Menu System The VCA menu system consists of six menu levels The menu level number is displayed in the top left corner of all VCA pages except for the Voice Message Information page Each menu level may contain one or a number of pages A VCA menu map is provided in Appendix D These levels are 1 Main Menu page Voice Message Information and Download pages LINE 1 Status pages and LINE 1 VAA Programming pages LINE 2 Status pages and LINE 2 VAA Programming pages Modbus Communication page Relay Outputs Digital Outputs and Inputs pages v XL x59 dq Configuration pages Navigation e o navigate between menu levels use the and keys e o navigate through pages on the same level use the keys Holding down these keys enables fast scrolling This allows menu pages and settings to be scrolled through rapidly with out having to press the key multiple times e To return back to the Main Menu page press the key Voice Message Information Page Level 1 This page is found on menu level one and provides detailed information on a voice message while it is playing The page is blank at all other times It also shows a figure to denote the level of audio detected on the communication line as well as a digital communication status indicator 1 2 Msg 1 Time 1 5 s 3 di gr IESO SUME cours Format 8b mu 22kS s 4 Tone Pre 0 End 5 5 6 Figure 12 Voice Message Informatio
86. s been incorporated to prevent the VAA batteries from being run down by a pre start sounding for an indefinite period if the pre start input or the device driving the input fails VOICECOM USER MANUAL ISSUE 4 Verifying the Pre start Alarm Request Input For troubleshoot purposes the PSR1 and PSR2 digital input states can be verified by looking at the Line Status page for the desired line or the Digital Inputs page Figure 30 below shows that the PSR1 input the pre start request input for LINE 1 is being asserted as indicated by the o o graphic 2 Lipg 4 l12 VAA s 5 D In PS20 0 g lo 0o y PSW RO o o Polo PSR1 digital 7 30 0 tagen TP aie input state 50 60 60 04 319 50 20 06 i E Doo NOG Boo o o Figure 30 Verifying the PSR Input VAA Pre start Alarm Sounding and Confirmation 1 All connected VAAs will receive the pre start command and necessary parameters from the VCA 2 The alarm tones are generated locally by each VAA not by VCA The tone sounded depends on the pre start tone set for that line at the VCA 3 While the VAA sounds the alarm its display will alternate between showing the text PS and the current being drawn from the battery The indicate that the alarm has not yet been confirmed for that VAA 4 During this time the VAA measures the current being drawn from the battery and compares this value with the current threshold level it is receiving from the VCA A VAA will typically dra
87. s common to accidentally reverse the connection of these signals A ready made serial cable is available from Ampcontrol p n E09400 2 Apply power to the VCA if not done so already 3 The VCA display must be showing the VCA Message Bank page shown 1 VCA Message Bank in the figure on the right This page is found by starting at the Main Menu Download Close LOCK Page on menu level 1 and pressing the key twice or the key once Feu Perec blige sos Refer to the VCA menu map in Appendix D NOTE Changing the display page while the Message Bank is downloading will abort the download The download will have to be started again from the beginning 4 The VCA Lock input must be asserted as prompted by the close LOCK I EP E text on the VCA Message Bank shown above To assert the Lock input an x No Megs Can Play Baud Rate Lisk2bps 52 VOICECOM USER MANUAL ISSUE 4 l S 12Vdc to 18Vdc supply must be connected between the KP3 and COM terminals of the IS EXT KEYPAD interface on the back of the VCA The supply positive is connected to terminal KP3 The supply negative is connected to the COM terminal Once the Lock input has been asserted the VCA Message Bank page will appear as shown in the figure on the right Refer to the Installation and Wiring chapter of this manual for more information on wiring the Lock input Start the VoiceCom Message Bank Editor PC program and open the Message Bank file you wish to dow
88. s connection e Initiate voice messages e Read VCA I O status e Read VCA configuration settings e Read VCA fault alarms e Read communication line and pre start alarm status e Read VAA operational parameter and setting values Most of these functions are self explanatory from the Modbus table However some functions such as initiating voice messages and reading VAA parameters require some extra explanation NOTE The VCA Modbus table begins at address 0 Initiating Voice Messages and Voice Message Control In order to play voice messages using Modbus the VCA must be in one of two modes e DI 1 12 Mbus 13 Only messages 13 to 255 can be initiated via Modbus Messages 1 to 12 are initiated via digital inputs 1 to 12 e Modbus 1 255 All messages 1 to 255 can be initiated via Modbus VOICECOM USER MANUAL ISSUE 4 To initiate a voice message 1 Write the desired message number 1 to 255 to VCA Modbus address 0 Zero 2 The message number value will remain at that address until the message has played to completion This allows the control device to know that a message is playing what message it is and when it has played to completion 3 When the message has completed and no other messages are playing the value at address 0 zero is 0 Zero Stopping a voice message Writing 0 zero to address 0 zero will cancel the voice message currently playing Message Queuing The VCA can queue one message while another is p
89. s received NF A solid block appears when noise is detected A solid block appears when an unsupported A solid block appears when a framing error is Exc Modbus command is received FE detected The configuration pages for the Modbus port can be found on menu level 6 On configuration setting allows the baud rate and parity to set A second page allows the Modbus slave address to be changed For more information on using Modbus refer to the Modbus Chapter SHORTCUT To change any of the Modbus communication settings such as baud rate parity or slave address press the ENTER key to view the Modbus configuration settings VOICECOM USER MANUAL ISSUE 4 Relay Outputs and Digital I O Level 5 The three pages on this menu level show the current state of the VCA s four relays four digital outputs and fourteen digital inputs These pages are useful for fault finding i gt RADIO oa Relay Outputs PE LA AS EIS Ti QUE OUE OUL Relay Outputs Page Figure 23 Relay Output Status Page 1 Menu level 4 Relay 3 state Relay 1 state 5 Relay 4 state 3 Relay 2 state In Energised Out De energised Relay 1 VCA hardware healthy This relay should always be energised while the controller is powered If a VCA memory fault or Message Bank processor fault occurs this relay will de energise Relay 2 no function Relay 3 Pre start alarm LINE 1 confirmed Relay 4 Pre start alarm LINE 2 confirmed Digital Output Page
90. sages Table 13 VAA Display Messages CLASH An address clash exists Check that all VAAs have been programmed with a unique address When the VCA initiates a pre start alarm PSW is displayed on the VAA The display will alternate between this message and the battery current being drawn from the battery If the VAA does not draw more than the Pre Start OK Current Threshold set at the VCA this message will be displayed until the pre start alarm stops ps PASS If the VAA draws more than the Pre Start OK Current Threshold set at the VCA then PSW PASS is displayed on the VAA for the duration of the pre start alarm The Keypad The four buttons on the VAA keypad are SPEAK FUNC CALL LOCAL and CALL EXCHANGE 35 VOICECOM USER MANUAL ISSUE 4 e SPEAK Press the Speak button to communicate with another user This voice communication will be broadcast on all VAAs connected to both communication lines When pressed a brief low frequency tone 752Hz is generated which is used to get the attention of other users When the SPEAK button is released a second brief tone 1002Hz is heard higher in frequency than the first to indicate that speaker has ended his broadcast The display shows the text SPEACH while the button is pressed NOTE The microphone has been designed to reduce the pick up of background noise lt is therefore necessary to speak as close as possible to the microphone e FUNC The FUNC Function button when pre
91. sscssssssssssessessseecsecesseseeseessssessesseseesersaesansasees 20 Line Status VAA Status and Programming Pages Level 2 and 3 20 Hne Saus P age E a DEM 20 WAR AAGGIESS SCUD AC caniae aia eu Prud 21 bia fa o E A A 23 VAA Operational Status Values uu Ad RU RU rod 24 VAA User Programmable Settings si E A 24 A o TM 25 Modb s Communication Status LCV C1 caesar scales preti rie tb udi ed eE 26 Relay Outputs and Digital I O Level 5 uu LL nennnnnnnnnnnnnnnnnnnnnnnnnnnnn ann na nanna nanna anna tana ata ta nata 27 Relay ON US Page aora aaa a loose 21 Digita Output o o 27 DIMAS A A 28 VCA C ORBTOH ados LOVE IA isinin E E N 29 CANONI N CASCUN Sonn EL ee EUR 32 CHAPTER 4 VAA OPERATION ii 33 VA AMDINET MOJU E aaa 33 A R e E 33 Pe LGD 34 CONTENTS VOICECOM USER MANUAL ISSUE 4 o e A 35 o e 35 A 36 ENE SEW DMA i ira iio 3 Gnangina Me Seis ts ide ais 37 VAA Battery PACK i e E E NE EA OEI E TE OERE A 38 Banery Pack Feature Sinagi dia 38 Removing and Connecting Battery Pack from Amplifier Module o ooococcococcccocconcononnrononornnononooo 39 VAA Battery States Voltage and Charge si i ccccscescdcadectiedscscescesdestessessdnacdensevseusdeasssesedestetascadnadenderteuedseveen 39 AMO TEE 40 IC CN eH e PU 40 Wakirig UE vL o abled adel acti t ice easts atta a Oat ati at vau tena tei 40 POWET SUD DSS CM xd sativ
92. ssed causes the VCA to set a flag in the Modbus data table and asserts digital output DO2 for a period of 5 seconds This flag and output can be used to trigger an external event such as making the PLC play all the active system messages A brief tone is generated when this button is pressed and is only heard locally at that VAA The display shows the text Func while the button is pressed e CALL LOCAL The Call Local button causes the VAA to generate a 848Hz tone while being pressed This tone is heard at that VAA and across the whole system It can be used for signalling other users The display shows the text CALL Lo while the button is pressed e CALL EXCHANGE The Call Exchange button when pressed causes the VAA to generate a 5 second low 200Hz tone If the VoiceCom system is connected to telephone pair this tone can be used to open a voice circuit for communication with the surface The display shows the text CALL EH while the button is pressed VAA Setup Mode The VAA Setup Mode allows the VAA s user programmable settings to be changed locally at the VAA unit The VCA Operation chapter describes how to program all VAA settings from the VCA Being able to program these settings from the VAA means that a VAA can be correctly set up when it is connected to the communication line without needing to go to the VCA These settings are VOICECOM USER MANUAL ISSUE 4 e VAA operating mode e Local volume e Threshold e Battery chargi
93. sub assembly p n E08831 4 sway aoe needed plug lo pol ogni communication line connection 2 6V 1 2Ahr battery pack p n E08584 5 4M6x20mm Allen head bolts 3 4 way mini plug for speaker connection 6 4M6 nylon flat washers NOTE Only the approved speakers can be connected to the VoiceCom VAA Two 12 watt 8 ohm speakers are available as a separate item p n E08783 15 VOICECOM USER MANUAL ISSUE 4 VAA Connections and Wiring The VAA module has three connection headers as shown in Figure 9 below O 0 8 0 0 0 10 y 3 BATTERY PACKS 1 SPEAKERZ SET SPEAKERZ SPEAKERI SPEAKERT SPEAKERS SPEAKER CONNECTION WIRE 0 Imm MINIMUM DIAMETER INSULATION THICKNESS Y 0 25 mm MINIMUM OVolts IV kan Audio CALL Call VLINE Vline Figure 9 VAA headers and communication line and speaker wiring 1 VoiceCom communication line 4 way 2 Speakers 4 way 3 Battery pack 10 way The communication line connections are listed in table 9 and speaker connections are listed in table 10 below Table 9 VAA communication line connections Terminal Function OV supply line AUDIO CALL Call digital line VLINE Negative supply line NOTE The double headed communication line plug provides for separate termination of in and out cables and allows the communication line plug to be disconnected from the VAA module without breaking the line Table 10 VAA speaker connections T
94. t VAA Serial Number High Byte Charging Current VAA Serial Number Low Byte Data for all VAAs can be read but only one Data Bank at any one time e LINE 1 VAA data is read from Modbus addresses 68 to 191 HEX 44 to BF e LINE 2 VAA data is read from Modbus addresses 196 to 319 HEX C4 to 13F It can be seen from the data table that there are four bytes per VAA To set what data appears in those bytes the desired bank number must be written to Modbus address 1 the VAA data bank select control word e Bank 0 write 0 zero to Modbus address 1 e Bank 1 write 1 to Modbus address 1 APPENDIX C Application Notes Communication Line Configurations Longwall o Standard VCA and PSU at DCB CMU L1 AFC L2 BSL Conveyor o VCA at Starter PSU anywhere L1 only o VCA at Tripper midpoint PSU anywhere L1 only o VCA at Tripper midpoint PSUs x2 anywhere L1 and L2 VAA Only eg vehicle road drift etc o VAAs no VCA PSU anywhere audio barrier Audio Interface Audio Barrier e Via VCA IS Audio Interface to telephone e Via communication line to telephone e Via communication line to other VoiceCom system SCADA Displays Suggested SCADA layouts data trending Voice Messages e Initiating messages e Joining messages together e Using tones Loading Voice Messages e Load on surface during commissioning using available PC or laptop e Make permanent connection between VCA and PC if networked PC located in same enclosure a
95. that it has sounded the pre start alarm This can be set to such a level as to indicate that one of the VAA s two speakers has failed See the Pre Start Alarm chapter for more information This feature is not implemented in this version of the VCA hardware and therefore cannot be set This set the communication parameters for the Modbus RS 485 port There are 5 baud rates and the parity can be set for each baud rate This sets the VCA s Modbus slave address VOICECOM USER MANUAL ISSUE 4 Message Bank 28k8bps This sets the baud rate of the VCA to PC Serial Baud Rate NS connection using the RS 232 port for the downloading of Message Banks All other 115k2bps communication parameters are fixed as the 230k4bps RS 232 port Is only connected to a PC running the Voice Message Bank Editor program VOICECOM USER MANUAL ISSUE 4 Changing VCA Settings The procedure for changing a setting on menu level 6 is the same for all settings The procedure explains how to change VCA configuration settings using the Voice Message Playback Volume setting as an example NOTE The Key Lock input must be asserted in order for any settings to be changed Go to the setting you wish to change For this example the Voice Message Playback Volume will be changed from 5 to 7 6 VCA Configuration Voice Message Playback Volume Press the ENTER key to enter the setting edit mode The second line of the display will display the text lt
96. the Service Factor value for LINE 1 is set to 3 This means that up to three VAAs can fail to sound a pre start alarm and the pre start alarm on LINE 1 to be successful The VCA will close its PSC 1 for LINE 1 relay the pre start confirmation permissive If four VAAS fail to send confirmation of sounding a pre start alarm pre start alarm has failed to sound as intended and the PSC 1 relay will not close The Service Factor can be set from 0 no failed VAA units permitted to a maximum value of 5 The procedure is the same for LINE 2 VOICECOM USER MANUAL ISSUE 4 Pre Start Warning Tone There are 8 different pre start tones available The same tone can be used for both LINE 1 and LINE 2 or a different tone can be selected for each line On a long wall installation for example LINE 1 would run along the AFC and LINE 2 would run along the BSL and monorail Different tones could be set for each line A table of tone frequencies and cadences is shown in the Specifications section of this manual Pre Start OK Current Threshold The Pre Start OK Current Threshold is the minimum amount of current every VAA unit must draw from its battery while sounding a pre start alarm The current threshold is used to verify that the VAA has sounded the pre start alarm It can be set from 30mA to 180mA in 10mA steps This parameter can be used to detect whether one or both of a VAA s two speakers have failed While sounding a pre O NCA Configuration Line 1
97. ue this until you have reached the desired address value address 4 in this example 2 L1 Address Setup Accept Ent lt esc gt 2 L1 Address Setup SetAdr Ent lt esc gt S ps PULIDO Adr ANCONA S n OOO Adr 4 Figure 17 Setting the VAA address value 9 To save the address press the ENTER key 2 L1 Address Setup 2 L1 Address Setup SetUp Ent lt esc gt ENTER Accept Ent ese gt S me UL Ace e qb Same PODIO Alea Figure 18 Saving the VAA address 200 VOICECOM USER MANUAL ISSUE 4 6 Pressing ENTER again will show the VAA unit with the next highest serial number Repeat this process until all the VAA units have been correctly addressed 7 To leave the Address Setup page at any time press the ATTE key and you will be taken back to the Line Status page You will PON RO o Ao OS e now notice that the appearance of the Line Status page has ARMA HEN changed All the VAA units that have had their address set and are currently online will be represented by a if symbol The Line 1 Status page on the right shows 10 VAA units online at addresses 1 to 10 The symbol indicates that there is no VAA unit online at that particular address A more detail description of this page and the other menu pages can be found in the VCA Operation chapter of this manual A C symbol indicates an address clash Two or more VAAs may have been programmed with the same address u Note New VAA units will be pre p
98. unication and recoup enough charge The VAA will not wake up until the battery voltage has risen above 6 0V This may take several hours depending on how depleted the battery charge is If the VAA does not wake up the battery back may have become damaged Refer to the Troubleshooting chapter for more information on fault finding VAAs Power Supplies Only connect the VAA to an l S power supply with output parameters that match the VAA input parameters as outlined in Certificate of Conformity Aus Ex 03 3881X VOICECOM USER MANUAL ISSUE 4 CHAPTER 5 Pre Start Alarm Operation There are four aspects to the pre start alarm operation if 2 3 4 Pre start alarm configuration VCA initiating a pre start alarm VAAs sounding and confirming the pre start alarm VCA determining if pre start alarm operation is successful Pre start Alarm Configuration There are four VCA settings that affect the operation of the pre start alarm These are e FOfVAAS to be online e ServiceFactor VAA s offline e Pre start Warning Tone e Pre Start OK Threshold The configuration of these settings is explained in more detail in the VCA Operation chapter and in Appendix B of this manual If both communication lines are being used these settings must be configured individually for each line Initiating a Pre start Alarm 1 A pre start alarm is initiated by asserting Pre Start Request digital input PSR1 for LINE 1 or PSR2 for LINE 2 on the V
99. vel threshold setting that prevents unwanted noise from being amplified Keypad Each of the four VAA keypad buttons also generates a different tone when pressed The SPEAK button generates a brief tone when pressed and then a higher pitch tone when released to get the attention of other users Pressing the CALL LOCAL button also generates a tone that can also be used to get the attention of other users The CALL EXCHANGE button generates a low frequency tone for a short duration that can be used to open telephone circuits The FUNC button when pressed closes one of the Controller s digital outputs This output can be used to trigger an external event such as prompting the PLC to initiate certain voice messages Display The LCD display cycles through the VAA s key operating parameters such as the communication line voltage battery voltage battery current and a system digital communication heart beat Local Configuration As well as being configurable from the Controller the VAA s programmable settings can also be changed at the VAA using the unit s programming mode Advanced Battery Management The VAA s battery management facility allows the battery s charging current to be set by the user The setting of the battery charging current depends on factors such as the output of the I S power supply and the number of VAA units connected to the communication line The VAA can effectively disconnect the battery if its voltage falls below a pre
100. w anywhere between 140mA to 180mA with two speakers connected If one speaker fails the current drawn will be approximately half the two speaker value If both speakers fail the current will only be a few mA a If the current being drawn from the battery exceeds the current threshold level then the pre start alarm has successfully sounded at the VAA The VAA display will alternate between showing the text PS PASS and the battery current The VAA will send this confirmation back to the VCA b If the current being drawn from the battery is less than the current threshold level then the pre start alarm has failed at the VAA The VAA may have still sounded the alarm The VAA display will alternate between showing the text PS and the battery current The VAA will not send confirmation back to the VCA 5 The current shown on the VAA display during a pre start will help to understand why a VAA is not confirming a pre start alarm NOTE Each pre start alarm tone while sounding may draw a different amount of current Some testing will have to be conducted to find a suitable current threshold level VOICECOM USER MANUAL ISSUE 4 Pre Start Alarm Confirmation If a pre start alarm is successful the confirmation relay output will close PSC1 is the pre start confirmation output for LINE 1 and PSC2 is the pre start confirmation output for LINE 2 However a pre start alarm is successful if the correct number of VAAs sound the alarm This de
101. y charging current user on VAA programmable 5 Line voltage at that VAA 11 Digital communication status indicator appears as a spinning bar 6 VAA battery voltage VAA Operational Status Values Vline this is the line voltage measured at the VAA The line voltage will depend on the power supply connected to the line and the distance of the VAA from the power supply Vbat this is the VAA battery voltage A fully charged battery should show a voltage of 6 6V to 6 7V A low or almost fully depleted battery will show a voltage of 5 9V to 6 0V Note The VAA batteries have an over discharge protection feature If the battery voltage falls below 5 9V it will shut itself off to prevent any permanent damage from occuring The output will only turn on once the battery has received enough charge to take it above the 6 0V Ibat this is the current going into coming from the battery The current will depend on whether the battery is charging fully charged or if the VAA s amplifier is on due to a PSA voice message etc A positive value denotes current used to charge the battery While charging this value can read between 5mA to 40mA depending on the battery charging current setting for the VAA A negative current value indicates that current is being drawn from the battery While sounding a pre start alarm Ibat can read down to 200mA When the battery is fully charged and the VAA is in standby Ibat will be at or near OmA VAA User

VCOMB021 VoiceCom System User Manual

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