ET-SZ6
Contents
1. HM Automatic Voltage Regulator ET SZ6 Operating Instructions Thank you for using our Automatic Voltage Regulator Please make sure you will read this Operation Instruction carefully before operating this regulator HMO 460 555 INDEX H ees sits teeta E E 2 2 Operation conditions trite errr tects settee ten a 2 3 Technical parameter a Arere RARA 3 4 Operation principles eneee a a 3 5 Control pane laesaeene a a nantes 4 6 Comecon a A AR 6 7 Description of operation keys eee eer er er eer er g 8 Description of function keygen tener eeeeeees 9 0 Dimension aran Errena aseni iE aA E Ta 13 10 RS 485 communication protocol EC870 5 101 14 CDI MA 1 Features ET SZ6 series automatic voltage regulator hereinafter is referred to as ET SZ6 is applicable to monitor of tap positions and remote transmission of tap position signal With the functions of manual automatic and remote control as well as remote control by computer RTU it can be used together with the series of CMA7 CMA9 motor drive mechanisms The major features are as follows Adopting the large LCD on the interface on which it can display position operation counter signal voltage and time delay etc Providing functions of manual automatic and remote control Under the manual control mode the operation of 1 N N 1 stop of OLTC can be achieved locally Converting position signal int2. Close rise 03H not allowed 10 3 EXAMPL 10 3 1 Request status of link 10H Start byte 49H Control field O1H Links address 4 AH Check sum 16H End byte 10 3 2 Request user data class 1 sequence 802H 002CH 10H Start byte 4 AH Control field O1H Links address 4BH Check sum 16H End byte Links normal 10H Start byte ABH Control field O1H Links address ACH Check sum 16H End byte of remote measure 801H 000BH 68H Start byte OEH L OEH L 68H Start byte A8H Control field O1H Links address O9H Type identification 82H Variable structure qualifier O1H Cause of transmission O1H Application layer address 1H Information object address O8H OBH YC O000BH OOH 2CH YC O000BH OOH 56H Check sum 16H End byte 17 D HM 3 3 remote control command control address 201H step rise select remote control return check 68H Start byte 68H Start byte O9H L O9H IL O9H L 09H IL 68H Start byte 68H Start byte 43H Control field 80H Control field O1H Links address O1H Links address 2EH Type identification 2EH Type identification O1H Variable structure qualifier O1H Variable structure qualifier 06H Cause of transmission
3. O7H Cause of transmission O1H Application layer address O1H_ Application layer address O1H O1H Information object address Information object address 02H 02H BAH S E QU DCS RCS BAH S E QU DCS RCS O7H Check sum 44H Check sum 16H End byte 16H End byte Note S E QU DCS _ 8AH rise close select 89H down open select Control address 201H step rise execute 68H Start byte O9H L O9H L 68H Start byte 43H Control field O1H Links address 2EH Type identification O1H Variable structure qualifier 06H Cause of transmission O1H Application layer address O1H S Information object address 02H OAH S QU DCS RCS 87H Check sum 16H End byte Note S E QU DCS DAH rise close execute 18 09H down open execute HMO 460 555 3 4 Convene amend RAM data Convene RAM data up transmission RAM data 68H Start byte 68H Start byte OCH ie NH L OCH L NH 68H Start byte 68H Start byte 4AH Control field 88H Control field O1H Links address O1H Links address 7DH Type identification 7EH Type identification O1H Variable structure qualifier O1H Variable structure qualifier UDH Cause of transmission O7H Cause of transmission O1H Application layer address OIH Application layer address eal Information object address sea Information object address 10H 10H a Begin address ou Begin address 7FH 7FH MH RAM data length lt 7 MH RAM data length lt 7 OOH W RAM
4. hanger position 8 Connected to co the aviation CxX 11 OLTC CX 12 Ten s place of tap changer position 1 CX 13 Ten s place of tap changer position 2 oe The common terminal L for position display Running indication signal port for 1 N Running indication signal port for N 1 Running indication signal port for Stop pc t Tap changer position 9 3 HMO 460 555 6 2 The connection diagram of CX2 socket 15 pins sockets 15 pins G Instructions Remarks socket No BCD code passive contact point 2 BCD code passive contact point 2 BCD code passive contact point 22 BCD code passive contact point 2 BCD code passive contact point 102 BCD code passive contact point 102 BCD code output of positions and input of voltage command cx2 10 R 1 cx2 12 cx2 13 R C 6 3 The connection diagram of RS 485 Note When the controllers are connected in parallel the wires A B of master and following controllers should be connected respectively cross connection of wire A and B is not allowed HM 7 Description of operation keys fel 7 1 1 Caution the operation keys only can be operated when the position displaying is working properly Before operating the operation keys the Pulse time Reference voltage n u 9 66 options of Control mode Time
5. in IEC870 101 format class FT 1 2 Frame with fixed length Start 10H Control field C Address field A Checksum CS End 16H Frame with variable length Start 68H Length L Repeat length E Start 68H Control field C Address field A Links user data variable length Checksum CS End 16H Length L including control field C address field A user data frame length L 6 14 HMO 460 555 Address field A range OO OFEH OFFH broadcast Checksum CS CS control field address field user data range up to 255 octets have to be a parameter Control field C Master station gt Primary station U 1 U U Function code Primary station Master station Reset remote link Reset of user process Data transmission S2 Data transmission S1 Request status of link Request user data class 1 Request user data class 2 1 U 1 U Function code U affirm 1 Link busy 8 User data response 9 Requested data not available 11 Status of link or access demand c Links user data application layer Data unit Data unit type Type identification Variable qualifier structure Cause of transmission Application layer address Information objects address Information objects element Time by Information objects Ty
6. 250V 5A Control output Passive contact point capacity 250V 5A Position display 1 35 positions Operation counter 0 99999 times Size L XW XH 220x102 x250 unit mm Weight 2 0 Kg 4 Operation principles The position signal of OLTC on load tap changer is transmitted into ET SZ6 through a 19 pins socket then isolated and sent into CPU for encoding and then BCD code is output through its passive contact point The SCM Single Chip computer outputs the digital analog as remote measuring signal after converting position data into digital analog quantity The CPU proceeds to accumulate operational times and displays it simultaneously the signal of position and accumulated operational times are transmitted afar via RS 485 or RS 232 serial ports 9 pins socket In order to prevent ET SZ6 from losing the data due to loss of electricity the SCM stores the operational times into EEPPROM The remote control signal of RTU computer is fed into ET SZ6 via RS 485 or RS 232 serial ports for the purpose of controlling relays of 1 N N 1 and stop The ET SZ6 s signal outputs of 1 N N 1 and stop are passive contact points which aim to control the mechanism of OLTC The communication protocol is in accordance with communication protocol of IEC 870 5 101 D HM 5 Control panel 5 1 The diagram of front panel Operation counter The information character Ti del of parallell control ime delay l LCD Indicator light Function keys
7. External Press switch outside to change over between manual and automatic control 6 2 Reference voltage In the mode of automatic control ET SZ6 will compare 6 3 the signal voltage with reference voltage if the signal voltage deviates from the scope of the pre set value of sensitivity the controller will adjust the tap positions of OLTC keeping the signal voltage within permissible range Sensitivity It limits the signal voltage including upper limit voltage and lower limit voltage Which are calculated by following formula Upper limit voltage Reference voltage reference voltage Sensitivity Lower limit voltage Reference voltage reference voltage lt Sensitivity For Example User Reference voltage is 400V the Sensitivity is 2 5 Then Upper limit voltage 400V 400VX2 5 410V Lower limit voltage 400V 400VX2 5 390V 6 4 Time delay 10 199S 11 HM 6 5 Parallel quantity When connected in parallel the quantities of controllers including the master controller must be set correctly 6 6 Running mode There are four running modes including master independent follow 1 and follow 2 One ET SZ6 will be set as master controller when the transformers are running in parallel others as following ones which must be set in sequence starting from follow 1 then the master unit will take control of the following units 6 7 Operation counter This option provides funct
8. J X 7 i l ET SZ6 Automatic voltage regulator J Position display Ne S Ae Parallelo F d A N 5 00033 manual U I N NCL stop 03 Position MLK anto x overflow 0107 Signal voltage 110 OV STOP lt manual key PAN Confirm S D 4 a Auto 1 N N j STOP Shanghai Huaming Power Equipment Co Ltd Fanua Note X Auto Manual switch The information character of parallel control will appear only in parallel connection control the meaning of the characters are MASTER CONTROLLER FOLLOWING CONTROLLER normal MLK The parallel connection control is SRD The communication with the master controller is normal MNL The following controller isn t connected SNR The communication with the master controller is abnormal MNS The tap position is asynchronous 5 2 The diagram of the back panel ree oocool a 9 RS 485 Xd RS 232 communication interface SIGNAL POWER I A N FAN 15 Uz D CX2 0 5A 0 5A gy 123 4 5 6 7 8 9 10 K1 K2 K3 K4 K5 Keon Up DownStop Comm OFF 11 12 13 14 15 16 17 18 19 20 CONTROL Dout GND SIGNAL POWER MODE AC 110V AC240V HMO 460 555 5 3 The connection diagram of master and following controllers Master controller position signal LCD Keyboard isolation Microprocessor R485 drive z BV P Oo 12V V
9. data XH Check sum XH Check sum 16H End byte 16H End byte Amend RAM data 68H Start byte 7FOOH Remote measure YC high byte address NH L 7FO1H Remote measure YC low byte address NH L 7F02H Remote control YK high byte address 68H Start byte 7F03H Remote control YK low byte address 44H Control field O1H Links address 7FH Type identification O1H Variable structure qualifier O6H Cause of transmission O1H Application layer address RAM address mean of RAM data 10H S Information object address 10H OOH Begin address 7FH MH RAM data length lt 7 RAM data XH Check sum 16H End byte Default setting Information object of remote measure YC 0801H step number YC 802H action number Information object of remote control YK 0201H 19
10. delay and Sensitivity must be pre set the operation mode should also be pre set under parallel control situation Manual control Use local manual control keys for details of 1 gt N N 1 Stop keys see diagram of front panel to carry out manual control The signal voltage will not be in effect under such circumstance Turn on power switch the LCD will display the operation controller as shown below 00055 4 Position D Sa Press the 1 gt N key in the mode of manual control the LED indicator light is on Which is set by function keys for more detail see 8 the indicator light of 1 will be on and the OLTC will raise its position to next one shown as below 00056 Operating indication Position 4 002 Sian 110 OV N4 Time delay Press N gt key the indicating light will be on the LOT will lower its position to next one In the process of operation of 1 N or N 1 the OLTC will stop raising or lowering the positions in case of pressing button stop with the indicating HMO 460 555 Ll light flashing the operating indication above will show as W Automatic Control 7 2 1 Inthe mode of automatic control ET SZ6 will compare the signal voltage with the set voltage once the signal voltage deviates from the set voltage a control signal of 1 N or N 1 will occur The indicator light for ope
11. ion of setting the operational times when the controller is used for the first time 6 8 Limit voltage setting This option is used for setting upper limit voltage and lower limit voltage of which both actuates the alarm of limit voltages 6 9 Controller address Refer to the exclusive serial number for identifying this controller in RS 485 or RS 232 serial port communication network 6 10 Baud rate RS 485 or RS 232 serial port communication ranges over 600bit s 1200bit s 2400bit s and 4800bit s 6 11 Remote measure address Refer to RS 485 or RS 232 serial port communication protocol 6 12 Remote control address Refer to RS 485 or RS 232 serial port communication protocol 12 HMO 460 555 9 Installation and dimension diagram Unit mm Control screen 210 Controller 98 N Fastener 1 Installation diagram rear panel front panel 2 Dimension diagram 13 HM 10 RS 485 communication protocol IEC870 5 101 10 1 a b c 10 2 a b i il REPERTOIRE Links S1 ask no answer Emendation time broadcast Links S2 send confirm Load working parameter Links S3 application answer Application Request user data class 1 Answer Requested data not available Remote measuring data step number Remote information data TRANSMISSION RULES Character format 1 Start bit 8 Data bits 1 Stop bit for no parity Format Figure shows the two frame formats
12. n output D A A D 8 7 2 signal RS 485 Filter AC DC ov isolation 232 drivel D1 D2 D4 D8D10 D20 T Rectifier DCOM me o TIITII T I T8910 OOO 10 UUE C CT T SOROSORO jy 14 15 17 18 19 20 S i l l cxi RW S d 0 Socket TII common Remote signal output and K1 K2 K3 K4 K5 Keom b t i b i 7 i ane i por remote regulating output H RS 485 ND Signal pover Auxiliary power b Control RS 232 Port AC 110V AC 240V To the aviation Rp inode socket of OLTC T To the control cabinet of OLTC Note Control Options str Interconnection port Remote regulating button The remote measuring output of position Analog output Passive contact point input select the manual control at the breaking of connection at this point while select auto control at closing The above operation will effect only when the option is External Used for exchanging the information when one ET SZ6 is Hm connected with another one in parallel Signal voltage Connected to the voltage signal 1 N N 1 Stop Common terminal Used for control output and the relays are dead contact Capacity 250V 5A AC 6 Connection diagram 6 1 The connection diagram CX 1 for positions of OLTC 19 pins socket socket serial Explanations Remarks Number Tap changer position 1 Tap changer position 4 Tap changer position 5 Tap changer position 6 Tap changer position 7
13. ntrol mode Manual Reference 110 OV l voltage Sensiti 2 5 vity N The selected menu Time 180S Delay 4 General operational sequence of the function keys Main menu oe oe Project menu Note Press f key to select the up options Press key to select the down options Press confirm Press confirm key Key save and return KK lt not save and return Setup project Note 1 Set up numerical value parameter key Select cyclically the data bit 4 key Add 1 to the selected data bit 2 Set up property parameter 4 Change the property value 10 HMO 460 555 5 The structure diagram of menu Control mode Sensitivity Time delay Running mode Operation counter Upper limit Limit voltage setting Lower limit Main menu Parallel Controller address Quantity Baud rate Serial port setting Measure address Control address 6 Description of menu Remarks The following functions such as Reference voltage Sensitivity and Time delay are valid in the mode of automatic control 6 1 Control mode This option is composed of four control modes they are Panel control and External control and other two control ways manual control and automatic control In the mode of Panel control Press keys on front panel to switch between manual and automatic control while in the mode of
14. o remote analog signal analog 4 20mA Being capable of communicating with RS 485 or RS 232 serial ports so as to take control of action of 1 N N 1 stop of OLTC Being available for either one or maximum three pieces of controllers which are connected in parallel with serial ports under the same communication protocol identifying by addresses without interfering each other Input mode Decimal line encoded input for details see 6 4 Connection Diagram 2 Operation conditions 2 1 Ambient air temperature is not lower than 20 C and not more than 40 2 2 2 3 2 4 2 0 2 6 Relative air humidity should not exceed 90 The height above sea level is not higher than 2500M Places without obvious vibration or violent impact The surrounding medium can not contain corrosive metal conductive dust or easily insulation destroyed gas and no risk of explosion around No erosion by rain or snow HMO 460 555 3 Technical parameters Assistant power supply AC220V 10 50HZ Time delay 10S 199S adjustable step length 1S default setting 180S Pulse time of operation 1S 199S adjustable step length 1S Default setting is 1S when ET SZ6 is used with CMA7 or CMAQ Signal voltage 80 200V AC continuously adjustable Sensitivity 1 00 5 00 continuously adjustable step length 0 01 Analog output current 4 20mA Remote signal output BCD code output with passive contact point Contact point capacity AC
15. oltage 5 _ D1 D20 BCD code passive eae 8 Voltage regulating contact point for controller s pang 5 control output inner position A D 7 o pos D A 2 PF Kan A signal RS 485 AC DC ov isolation 232 drive j D1 D2 D4 ps p1d D20 l DCOM Drive Rectifier TEHO HiO LT 2 HAEE 10 DA LL PERSON 1 15 RE 19 q J CXL RN Sun 4 CX2 Socket I Td Remote signa conimon T remote regul i port T To the aviation socket of OLTC U To the control cabinet of OLTC a E K1 K2 K3 K4 K5 Kcom i 1 output and l ating output l i RS 485 Dout GND Signal power Auxiliary power EEE C 110V AC 240V Port Control mode T Note Kl Signal voltage disapperance K2 Signal voltage over limit K3 position being asynchronous K4 single parallel K5 manual automatic Kcom common Terminal for remote signal Following controller position signal LCD Keyboard isolation V Microprocessor RIRE drive 5V E g 12y Voltage R tabilized GF Passive contact point i SET S Voltage regulating D1 D20 BCD passive contact point for remote signalling supply zi control output for controller s inner positio
16. pe identification Master station Primary station lt 46 gt O2EH lt 103 gt 067H emendation time command lt 110 gt O6EH loading parameter lt 122 gt O7AH convene fixed data command lt 123 gt O7BH amend fixed data command lt 124 gt O7CH confirm fixed data command lt 125 gt O7DH convene RAM data lt 127 gt O7FH amend RAM data Primary station Master station lt 1 gt identification lt 2 gt 002H remote control remote regulate OO1H single status YX remote information without time single status YX remote information with time identification 15 HM lt 3 gt 003H double status YX remote information without time identification lt 4 gt 004H double status YX remote information with time identification lt 9 gt OO9H YC remote measure lt 15 gt OOFH YM remote pulse lt 17 gt O11H protection event lt 122 gt O7AH up transmission fixed data lt 123 gt O7BH fixed data return check lt 126 gt O7EH up transmission RAM data Variable structure qualifier SQ Information elements counts 0 127 SQ 0 addressing of non sequence information elements SQ 1 sequence of information elements Cause of transmission lt 1 gt periodic cyclic lt 3 gt spontaneous remote measure remote information lt 6 gt activation remote control lt 7 gt activation confirmation lt 8 gt deactivation lt 10 gt ac
17. rational controller on LCD flash at the same time then making the OLTC switch from one tap position to the next one and realizing the purpose of regulating voltage 7 2 2 When losing the tap position signal ET SA6 will automatically lock the action Cau 7 3 Note command of 1 N and N 1 meanwhile the indicator light for disconnection alarm will be on ET SZ6 will send out a quick lowering command once the ratio of signal voltage and reference voltage exceeds 110 accompanied by the lighting of indicator light for over voltage while ET SZ6 will lock operation as the ratio falls below 70 accompanied by the lighting of indicator light for disconnection alarm Remote Control The remote control consists of passive contact point control and serial ports control the RS 485 or RS 232 serial ports adopt the method of bus communication and the communication protocol is in accordance with IEC870 5 101 with function of return proofreading For communication protocol see appendix Manual control and remote control are valid in the mode of manual control 8 Description of function keys 1 Names of function keys Confirm key Ke T Up key Left key gt Right key Down key HM 2 Main menu on LCD 00055 position S 1 10 OV 04 tap position signal 00055 operation counter signal voltage 110 0V 3 Setting menu on LCD Example Co
18. tivation termination Application layer address Is links address field A in general condition application layer 1 254 is broadcasting Information objects Information objects consist of information object address information elements and time identification Information objects address has 16 bits with low byte former and high byte latter Information object address of remote information YX remote measuring YC and controlling can be fixed by convening and amending RAM with detailed relevant addresses as follows RAM data address 7FOOH Remote measure YC high byte address RAM data address 7FO1H Remote measure YC low byte address RAM data address 7FO2H Remote control regulate YK high byte address RAM data address 7FO3H Remote control regulate YK low byte address Information objects address can be fixed as 1010H when amending RAM data Information objects data Remote measure YC D7 D6 D5 D4 D3 D2 D1 DO 5 D14 D13 D12 DII D10 D9 D8 S 0 YC gt 0 Example YC 0200H 512 S 1 YC lt O complement YC FEOOH 512 16 YC data available should be 11 bits in this protocol HMO 460 555 Remote information YX YX7 YX6 YXO YX4 YX3 YX2 YX1 YXO Remote control regulate YK S select E execute QU DCS RCS S E 0 select 1 execute QU 1 short pulse 2 long pulse DCS RCS 00H not allowed 01H Trip fall 02H
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