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Installation Manual 06/1998

1. 5 T2 T1 T4 52 53 54 55 amp TB1 O U O ERES CB1 SLTA Enn TRO Software ID tag a0240 Microprocessor Control Board The Microprocessor Control Board MCB is shown Te It contains a microprocessor that is programmed with the software required to receive tran transmit data across the gateway in either direction The various MCB connections and components are described below Figure 2 Microprocessor Control Board MCB HI LO Hex switches ADDRESS A KEYPAD LCD DISPLAY PORTA PORTB COMMUNICATIONS FUSE BUSSMAN MCR 1 4 RUNNING RESET STATUS ACTIVE J OUTPUT 0 v Microprocessor status LEDs POWER FUSES BUSSMAN GDC T2A DIGITAL OUTPUTS wv ANALOG INPUTS POWER IN 18 24 VCT AC AC GND GND AUX OUT Aux Out Terminal Strip The Aux Out terminal strip provides 12 Vdc power to the SLTA Refer to the panel s wiring diagram bee de EEA for more information Power In Terminal Strip The MCB receives 18 Vac center tapped power from transformer T2 through the Power In terminal strip This power drives all logic and communications circuitry and the Aux Out terminal strip Refe
2. Off Abs 0 2 10 20 Inc 2 8 10 5 5 2 10 1 41 61 61 61 41 61 41 41 81 41 41 41 414 5 gt Press amp hold SF RA EventButton Time s Md o A o 2 Y IM 661 1 53 100 m ps evo VA ds a EH ENS Mi i HA sseid 8 5 P s s bibi s s s bibil s 9 S oL 8 z 5 oz OL 2 yo bee Pen E 2 2 y x 2 2 J 2 o o SS o 6 eee o ES ER SE SC SE SS SP d SS o QU o sd oS VA gt RE SD SN E e gt E S PIS L o NX LS e e e ox 36 gt so 2 2 qs qe e Pu 2 2 x 2 A 7 UMOYS rz sseippy epow poujejy e Suj oyny eur Buisn ejduiex ssaippy jes Lg einDrj zL00e m ps evo MS B BEN M sseud amp 3 2 4 oL le jellel oL 9 9 OL 8 zou 3 oz OL osqy 9 7 4 o o E i o PSN E d Plu ee eet imc E om nce e sme Sed j tad 6 y Na g 2 N gt 2 2 2 2 2
3. PDWER SWITCH UN 2 USE ADAPTER S 232 FOR RS 485 REMOV ADAPTER TO BAS PEN PROTOCOL INTERFACE Test Procedures A listing of MicroTech related part numbers is included in the Parts List section Ifthe MCB must be replaced refer to the MCB Replacement section Status LED Diagnostics The MCB status LED indications can aid in controller diagnostics Ifthe status LEDs do not operate normally as described in the Component Data section see 1 there is a problem with the MCB Following are troubleshooting procedures for ous 5 Red LED Remains If the red LED remains on after the 5 second self test period it is likely that the MCB is defective However this can also occur in some instances if there is a power supply problem Refer to Troubleshooting Power Problems below 57 Red and Green LEDs Off If the red and green LEDs do not turn on after power is applied to the controller there is likely a defective component or a problem in the controller s power distribution circuits Refer to Troubleshooting Power Problems below Green LED On Amber LED Off If the green LED is on and the amber LED remains off it indicates that the MCB s program is not executing This usually means that the Program Checksum does not match the EOS Checksum With the Monitor program set the Program Checksum equal to the EOS Checksum and then reset the co
4. Water source heat pump TB1 5 TB1 6 Legend When making splices and multiple wire terminations always match wire FTT B Field wiring terminal color to reduce the risk of shorts This precaution is especially important A when wiring ring topologies Field wiring discrete Twisted pair cable for a MicroTech 2000 network must be NEMA Level 4 Field wiring twisted pai bl or approved by Echelon Connect Air W221P 1002 PVC W221P 2001 mu cz wiring twisted pair cable plenum or equivalent Maximum node to node distance is 1312 ft Field wiring twisted shielded pair cable 400 m Total cable length must not exceed 1640 ft 500 m zi P A A with drain wire i j a0059 The maximum node to node distance is 1312 ft 400 m The longest cable path between any possible pair of nodes on a segment must not exceed the maximum node to node distance If two or more paths exist between a pair of nodes e g a loop topology the longest path should be considered Note that in a bus topology the longest node to node distance is equal to the total cable length IM 661 1 IM 661 1 3 The maximum total cable length is 1640 ft 500 a The total length of all cable in a segment must not exceed the maximum total cable length b One 52 3 ohm 0 25 1 termination resistor is required in each segment c A termination resistor is factory installed in the MCG across terminals FTT A and FTT
5. FF MicroTech BAS temm See notes 1 2 amp 3 MicroTech 2000 unit controller MicroTech 2000 unit controller MicroTech 2000 unit controller MicroTech 2000 MicroTech 2000 unit controller unit controller Notes 1 MicroTech 2000 network communications terminations are polarity insensitive Field terminals are as follows FTT 10 field terminal MicroTech 2000 unit controller B Water source heat pump 1 5 TBI 6 2 When making splices and multiple wire terminations always match wire color to reduce the risk of shorts This precaution is especially important when wiring ring topologies 3 Twisted pair cable for a MicroTech 2000 network must be NEMA Level 4 or approved by Echelon Connect Air W221P 1002 PVC W221P 2001 plenum or equivalent Maximum node to node distance is 1312 ft 400 m Total cable length must not exceed 1640 ft 500 m IM 661 1 MicroTech 2000 unit controller MicroTech 2000 unit controller MicroTech 2000 unit controller MicroTech 2000 unit controller 4 Twisted shielded pair cable must meet the following minimum requirements 300 V 60 C 20 AWG polyethylene insulated with a PVC outer jacket and drain wire Belden 8762 or equivalent Some local codes may require the use of plenum rated cable
6. Installation 8 Maintenance Data Group Controls Part Number 594881Y 01 Date June 1998 MicroTech Communications Gateway MicroTech 2000 LonWorks Based Controllers Gateway McQuay 1998 McQuay International International Contents IM 661 1 Figure 7 Typical Interoperable System Using Open Protocol Interface to MicroTech 2000 Equipment McQuay and MicroTech are registered trademarks of McQuay International MicroTech 2000 Monitor and Open Protocol are trademarks of McQuay International All other trademarks are the property of their respective owners IM 661 1 3 Introduction This manual provides information about the MicroTech Communications Gateway MCG which provides an interface between devices using the proprietary MicroTech protocol and MicroTech 2000 unit controllers using the LonTalk protocol It describes the MCG s components field wiring requirements network commissioning procedures MicroTech 2000 side only and service procedures For specific information about the LonWorks based MicroTech 2000 unit controllers refer to the appropriate unit controller installation or operation manual see ope tend eee Table 1 Unit Controller Installation Literature Unit Type Installation amp Maintenance Data Bulletin Number HP IM 660 Table 2 Unit Controller Operation Literature Unit Type Operation Manual Bulletin Number HP OM 128 Z WARNING
7. gt ES 6872 SS SS i 6997 gus LS SRS OS SS ES Se 2 S oe e d ES KAS or pe DE KAS ES l d gt SOS gt e gt NS N x PS amp E 2 SS ES c e E gt OP Rod S SO 2 d gt CESR 2 2 dev e ki e SO UMOYS 0 SSeJppy SPON poujaw ejsu ojny oyioeds y Buisn ejduiex3 sseippy Jes og einBrj IM 661 1 54 Service Information Wiring Diagrams The following wiring diagrams are identical to the ones in the MCG panels They are reproduced here for your convenience FT shows the MCG L2 panel and sese hows the MCG OP panel The legend is s Table 10 MCG Schematic Legend Component Designation Description 1 Circuit Breaker MCB Microprocessor Control Board SLTA Serial LonTalk Adapter TI Transformer 115 24 Vac T2 Transformer 24 Vac 18 Vac CT TBI Terminal Block High Voltage Section TB2 Terminal Block Low Voltage Section Al Factory Wire Number Field Wiring Terminal Field Wiring Fe Printed Circuit Board Terminal A Twisted Shielded Pair Cable IM 661 1 55 56 Figure 33 MCG Schematic MCG L2 Panel HOT 1 Eg 50 am 05 AMP Pis 900 g 0 904 909 35 LEVE CONTROLLER PORT B IM 661 1 IM 661 1 Figure 34 MCG Schematic Panel HOT NEUTRAL GRD 115 WILTS OWER SUPPLY gt KFUSED 15 AMPS
8. 8 Level 2 1 1 1 1 i i Level 3 I Up to 64 HPs 1 1 1 1 1 1 1 1 LonWorks l e 1 1 9 Subnet r d 4 Ll p RET ca po ER qoe eee irr rue 7 gt Up to 64 HPs 1 per MCG OO OOO e o S a0021 Network Architecture Any network that includes an MCG contains two types of network architecture MicroTech which is a master slave type and MicroTech 2000 LonWorks which is a peer to peer type The MCG is the gateway between the two network types MicroTech Family All controllers in a MicroTech network are assigned a logical level level 1 level 2 or level 3 MicroTech networks must have one and only one level 1 controller to coordinate communications Multiple level 2 controllers can be connected to the level 1 controller with a communications trunk an isolated section of the daisy chained network Multiple level 3 controllers can be connected to a level 2 controller with another trunk For general information on wiring a MicroTech network refer to the installation manual provided with the level 1 controller MicroTech 2000 Family For information on The network architecture that is currently used with the MCG and the MicroTech 2000 family of unit see the Held Wiring controllers is a simplified form of LonWorks architecture The MCG and all MicroTech 2000 section controllers connected to it are part of the same subnet The SLTA and each MicroTech 2000 contro
9. IM 661 1 See the Using the MicroTech Wall Sensor section below for more information on using the tenant override button IM 661 1 gt To Auto Install a node with the Incremental method 1 At the PC set the Gateway Configuration variable in the MCG OP to and set the Subnet Address variable to the specified subnet address Set the Auto Install Timer in the MCG OP for the time you estimate necessary to address all nodes At the PC verify that the MCG OP Unit Type variable for each node address to be assigned is N A Go to the node that should receive the next unassigned address in the MCG s network database The Unit Type variables are part of the network database The next unassigned address is the next address after the highest address with a defined Unit Type For example if Node 03 Unit Type is set to HP and the Node 04 Unit Type through Node 40 Unit Type variables are all N A the next unassigned address is 04 This is true even if the Node 02 Unit Type is N A If all Unit Type variables are set to N A the next unassigned address is 01 Use the tenant override button on the HP wall sensor to do the Set Address function part of the Select Function event Do not enter an address Request Address and Send Request events This generates a service pin message which contains the node s Neuron ID and program code identification The serv
10. Ability to readdress node Yes No Must node s Neuron ID be known No No No Yes Wall sensor use required Yes Yes Yes or use Service button No The type of network you are installing has an effect on some of the configuration decisions made at the MCG Select from the following which of the three types of networks you are installing and follow the instruction for setting the node addresses for that type of network 31 32 For defintions of MCG terms see Applying the MicroTech Communications Gateway gt See the Using the MicroTech Wall Sensor section below for more information Open Protocol Network MCG OP Panel This type of network uses a level 1 MCG OP panel The PC running the Monitor for DOS Open Protocol software is directly connected to the MCG OP In almost all cases the node addresses are defined and recorded on a schedule You must enter the assigned addresses so that the BAS network is complete To Auto Install a node with the Specific method 1 At the PC set the Gateway Configuration variable in the MCG OP to MCG OP and set the Subnet Address variable to the specified subnet address At the PC set the Auto Install Timer for the time you estimate necessary to address all nodes Go to the first HP wall sensor Use the tenant override button on the HP wall sensor to do the Set Address function part of the Select Function event Ente
11. 1 At the PC type the Neuron ID of the node to be re addressed into the Current Node Neuron ID variable field You can find the Neuron ID in the network database You may need to jot it down on a piece of paper Set the Manual Install Node Address variable to the specified address Then set the Manual Install flag to Yes Confirm that the node received its address by watching the network database This may take a minute or so a Ifthe Neuron ID moves to the specified node address you have verified communications and the assigned address b Ifthe Neuron ID does not move to the specified node address in the database the node did not receive the new address Check the network wiring Note You can also verify this by observing the Status LED at the node The Status LED flashes the address if the address assignment was successful Confirm Request event 35 Open Protocol Network MCG L2 Panel For defintions of This type of network uses the level 2 MCG L2 panel The PC containing the Monitor for DOS Open MCG terms see Applying the Protocol software is connected to the Open Protocol Master Panel OPM Prior to addressing the MicroTech nodes you must establish MicroTech network communications between the OPM and the MCG L2 Communications Gateway panel Refer to the OPM installation manual for instructions on establishing the MicroTech network communications In almost all cases the node add
12. 46 e conflict 1 occurs the new address is assigned and the old address is cleared unassigned in the network database For example if a node with address 03 is assigned a new address of 04 the node s Neuron ID and Program Code in the network database move from the 03 row to the 04 row The Node 03 Unit Type changes to N A and the Node 03 Neuron ID changes to 000000000000 e Ifconflict 2 occurs the node that currently has the common address is unconfigured and then the address is assigned to the requested node When a node is unconfigured its address is removed The Status LED at such a node displays its normal unit status indication at low brightness For example if node address 04 has been assigned to node A and then it is assigned to node node B gets address 04 and node A is unconfigured The Neuron ID and Program Code for node B replaces those for node A at the 04 row in the network database The node A information is removed from the database These rules are applied as needed In some instances all three may apply Using the MicroTech Wall Sensor MicroTech room temperature sensors that are equipped with a remote Status LED and tenant override button can be used to install the nodes These wall sensors eliminate the need to go to each unit and open its control panel a difficult and time consuming task for some units such as ceiling mounted HP units With the wall sensor you can do the following e Do
13. Cable length must not exceed 5000 ft 1524 m TT B Field wiring terminal Field wiring discrete mumm oc Field wiring twisted pair cable Field wiring twisted shielded pair cable with drain wire 20023 17 18 Figure 14 Typical Field Wiring Schematic for Open Protocol System Free Topology Shown Notes 4 4 115 Vac power Hot 52 3 Ohm Resistor WHT EN m 2 Third Party BAS See notes4 amp 5 See notes 1 283 MicroTech 2000 unit controller MicroTech 2000 unit controller MicroTech 2000 unit controller MicroTech 2000 unit controller E 8 S s ME E e 8 5 gt 2000 unit controller MicroTech 2000 unit controller MicroTech 2000 unit controller MicroTech 2000 unit controller Twisted shielded pair cable must meet the following minimum requirements 300 V 60 C 20 AWG polyethylene insulated with a PVC outer jacket and drain wire Belden 8762 or equivalent Some local codes may require the use of plenum rated cable MicroTech 2000 network communications terminations are polarity insensitive Field terminals are as follows FTT 10 fleld terminal 5 Cable length must not exceed 50 ft 1524 m MicroTech 2000 unit controller
14. It is not to establish and verify unit operation Network commissioning should be done after unit check test and start procedures have been completed N NOTICE Before any unit is allowed to operate it must be commissioned in accordance with the instructions in the MicroTech unit controller installation literature see Table 1 and the model specific unit installation literature In addition the MCG must be set up so that it can perform the proper data translation for its associated units This setup is described below in Overview of Procedure Network Management In addition to performing protocol translation the MCG serves as a network management tool which holds the network database network management tool allows you to configure a LonWorks network When you configure a MicroTech 2000 network you simultaneously address the controllers and set up the network database A network database simply contains information about the network s configuration In the MCG this is essentially a table that lists each MicroTech 2000 controller and its logical address see penes 21 22 MicroTech 2000 controllers are assigned logical addresses by the network management tool there are no hex switches as there are on MicroTech controllers Since the network management tool communicates over the network you can perform addressing and commissioning at the same time In conjunction with a PC equipped with the appropriate Monitor softwa
15. If the write was successful the flag changes to No preventing additional writes If the write was not successful the flag remains at Yes The MCB automatically reconfigures the SLTA upon reset if the subnet address changes If You Replace the SLTA If you replace the SLTA for any reason you must manually reconfigure it even though the Serial LonTalk Adapter Status variable shows OK Configured For information on how to do this see MCG Setup Variables in the Network Commissioning section Note There are jumpers within the SLTA that must be set properly for the MCG application If you obtain a replacement SLTA from McQuay International the jumpers should be preset If not you should match the jumpers to those on the defective SLTA MCB Replacement If an MCB board is defective and must be replaced the proper controller software must be loaded into the replacement MCB This can be done either at the factory or at the building site if a PC equipped with appropriate Monitor software is available The factory loads the proper controller software into a replacement MCB board before it is shipped if you include the MCG s program code with the replacement MCB part order If the program code is not provided the MCB board is shipped without software Job specific Monitor software includes each unit and auxiliary controller s program Therefore it is possible to download the proper controller software to a re
16. The MicroTech Communications Gateway MCG is a microprocessor based controller designed to provide an interface between systems using the MicroTech proprietary protocol and up to 64 MicroTech 2000 unit controllers that use the LonTalk protocol Systems that use the MicroTech proprietary protocol include 1 other MicroTech unit or auxiliary controllers 2 a PC equipped with MicroTech Monitor software or 3 the building automation system of a company licensed for Open Protocol communications The MCG is available as either the MCG L2 level 2 or MCG OP level 1 For more information see the Applying the MCG section The MCG is a passive device It simply receives translates and transmits messages in either direction across the interface After it is set up no further adjustments are necessary Component Data The MCG control panel layout is shown in ES The main components of the system are the Microprocessor Control Board MCB and 1 LonTalk Adapter SLTA These components are mounted inside a standard NEMA 1 enclosure and interconnected by multi conductor cables or discrete wiring Power for the system is provided through transformers T1 and T2 Circuit breaker CB1 which provides overcurrent protection can be used as an on off switch for the panel Figure 1 MCG Level 2 Control Panel Layout
17. which should be connected to terminals L1 and L2 in the high voltage section of the panel The panel must be properly grounded by connecting the ground lug GRD to earth ground Refer to FT Power wiring must be sized to carry at least 5 amps To gain access to the high voltage section remove the deadfront barrier It is attached to the panel with three 16 inch hex screws Replace this deadfront when the wiring is complete The panel is internally protected with a 0 5 amp circuit breaker CB1 which is located inside the panel on the underside of the high voltage section see This push button circuit breaker can also be used as an on off switch for the panel When HUGE is in the panel should be energized When the push button is out the panel should be de energized Note that a white ring on the switch shaft is visible when the push button is out Network Communications MicroTech 2000 Side The MCG s SLTA and all MicroTech 2000 controllers are equipped with an FTT 10 transceiver for network communications This transceiver allows for 1 free topology network wiring schemes using twisted pair unshielded cable and 2 polarity insensitive terminations at each node This combination of features greatly simplifies installation and reduces network commissioning problems It also allows nodes to be added in the future with little regard for existing cable routing The communications rate on an FTT 10 network is 78 kbps As shown in EE free
18. CA ES SS Se SAS Que quc SD High a ee o i 1 S Medi op i i Q i Low 1 O Off 1 o Abs 0 10 gt Inc c r Press button anywhere within prompt window to confir 2 Press requested node address if button is pressed window E 8 hold immediately closes and SR event begins Send Reguest SR The SR event tells the MCG that the node would like an address assigned to it The message that is sent to the MCG includes these three pieces of data 1 Neuron ID 2 Program Code 3 The requested node address If the MCG s Auto Install feature 1s on it interprets a requested node address of 00 as a request for an incremental address If the Auto Install feature is off it ignores the requested node IM 661 1 The SR event is a little different from the other events in that no button press is required and no special LED indication is associated with it The LED actually returns to normal indication while the SR event is happening This usually takes only 1 to 3 seconds See If you re using an Auto Install method the SR event is immediately followed by the CR event f the address was assigned If the CR event does not begin 1 e normal indication continues the address was not assigned This could occur if the MCG s Auto Install Timer is disabled or network communications does not exist Note The first two pieces of data that are sent during the SR event the Neuron ID and program code
19. Electric shock hazard Can cause personal injury or equipment damage This equipment must be properly grounded Connections and service to the MicroTech control panel must be performed only by personnel that are knowledgeable in the operation of the equipment being controlled N CAUTION Static sensitive components A static discharge while handling electronic circuit boards may cause damage to the components Discharge any static electrical charge by touching the bare metal inside the control panel before performing any service work Never unplug any cables circuit board terminal blocks or power plugs while power is applied to the panel NOTICE This equipment generates uses and can radiate radio frequency energy If it is not installed and used in accordance with this instruction manual it may cause interference to radio communications It has been tested and found to comply with the limits for a Class A digital device pursuant to part 15 of the FCC rules These limits are designed to provide reasonable protection against harmful interference when the equipment is operated in a commercial environment Operation of this equipment in a residential area is likely to cause harmful interference in which case the user is required to correct the interference at his or her own expense McQuay International disclaims any liability resulting from interference or for the correction thereof IM 661 1 General Description IM 661 1
20. Green LED On Amber LED State Indication Flashing On 1 sec Off 1 sec Normal operation Off Program inactive checksums corrupt Hex Switches The MCB includes two hex hexadecimal switches that are used to set the MCG controller s network address Figure 3 Hex Switches HI left hex switch LO right hex switch The HI and LO hex switches are shown inffi A hex switch setting is defined as the HI switch digit followed by the LO switch digit For a hex switch setting of 2F would have the HI switch set to 2 and the LO switch set to F Note You can change the setting of a hex switch with a slotted blade screwdriver that has a 7 32 inch tip If a hex switch setting is changed power to the MCB must be cycled in order to enter the new setting into memory This can be done by opening and then closing the push button circuit breaker CB1 in the panel Communication Ports The MCB has two communication ports port A and port B Each port has six terminals and is set up for both the RS 232C and RS 485 data transmission interface standards Socketed fuses located next to the ports protect the communications drivers from voltage in excess of 12 V Following are brief descriptions of each port s function in the two MCG configurations Port A in MCG L2 Port A is for communications with the SLTA using the RS 232C interface standard The communications rate is 19200 bps Port B i
21. L2 received the service pin message and has issued the requested address by watching the Status LED on the wall sensor Confirm Receipt event a Ifthe Status LED flashes the address you requested you have verified communications and the assigned address b Ifthe Status LED does not flash an address normal LED indication continues the node did not receive an address Verify that the Auto Install Timer is set to a non zero value and check the network wiring Note You can also verify this by observing the network database at the PC The Neuron ID and program code identification string only appear in the MCG database at the requested node address 1f the address assignment was successful Go to the next HP wall sensor and repeat steps 2 through 8 IM 661 1 See the Using the MicroTech Wall Sensor section below for more information on using the tenant override IM 661 1 button gt To Auto Install a node with the Incremental method 1 At the PC set the Gateway Configuration variable in the MCG L2 to MCG and set the Auto Install Timer in the MCG L2 for the time you estimate necessary to address all nodes The MicroTech level 2 address of this controller becomes the subnet address portion of the subnet node address At the PC verify that the MCG L2 Unit Type variable for each node address to be assigned is N A Go to the node that should receive the next unassigned address in the network databas
22. a normal tenant override button press e Obtain the current node address for that node e Seta specific node address Auto Install e Set an incremental node address Auto Install e Generate a service pin message Manual Install To do these things you have two tools a push button switch and an LED Because the tools are limited information is entered and displayed by means of defined sequences of button presses pauses and LED flashes with varying time intervals and brightness levels At first it may seem difficult but with a little practice using the wall sensor becomes easy Wall Sensor Functions By pressing and holding the tenant override button for different lengths of time you can select the wall sensor function you want There are three possibilities e Tenant Override hold button for 2 10 seconds During scheduled unoccupied periods the tenant override function normally causes the unit to start and run as if it were in occupied operation for some redefined time On some units a second button press for the Tenant Override function causes a different defined effect for example it might turn off the unit before the timer expires For more information see the unit controller operation manual e Query hold button for 10 20 seconds The Query function allows you to find out what the node address is for the node the wall sensor is connected to e Set Address hold button for more than 20 seconds The Set Addre
23. is configured as the MCG Monitor This address is combined with the node address assigned during node installation to provide the complete subnet node address During addressing power down the panel configured as the MCG LMP in order to prevent inadvertent addressing of the HPs In almost all cases the node addresses are defined and recorded on a schedule You must enter the assigned address so that the Monitor software can access the correct unit To Auto Install a node with the Specific method 1 At the PC set the Gateway Configuration variable in one of the MCG L2 panels to MCG Monitor and set the Auto Install Timer in this MCG L2 for the time you estimate necessary to address all nodes The MicroTech level 2 address of this controller becomes the subnet address portion of the subnet node address 2 Go to the first HP wall sensor Use the tenant override button on the wall sensor to do the Set Address function part of the Select Function event 2 Enter the node address by doing the Request Address event The Status LED flashes the address you requested Feedback Address event 4 Ifthe LED flashes the correct address use the tenant override button to confirm the address request Confirm Address event 5 Ifyou confirmed the address the node performs the Send Request event and generates a service pin message which contains the node s Neuron ID and program code identification string The ser
24. topology means that the following network topologies are possible e e Ring e Star e Any combination of Bus Ring and Star Note Limitations to wire lengths apply and must be observed 15 Figure 11 Free Topology Networks TR 52 ohm Combinations A network segment is any part of the free topology network in which each conductor is electrically continuous Each of the four diagrams in E a segment Some applications may require two or more segments see Free Topology R below If necessary segments can be joined with FTT 10 to FTT 10 physical layer repeaters which are available from third party vendors See 128 Figure 12 Combining Network Segments With a Repeater Repeater TR 52 ohm Free Topology Restrictions Although free topology wiring is very flexible there are restrictions 1 The maximum number of nodes per segment is 64 not including the SLTA The maximum number of MicroTech 2000 controllers per MCG L2 pair MicroTech BAS or per MCG OP Open Protocol 32 is recommended maximum is also 64 So when an MCG is being used this 64 unit limit cannot be increased by installing a repeater IM 661 1 Figure 13 Typical Field Wiring Diagram for MicroTech BAS Free Topology Shown Hot 115V acpower 52 3 Ohm Resistor Hot 115V acpower Neural Resistor SLTA Removed Port B BLK a See notes 4 amp 5 WHT a
25. you can expect for the various functions and installation methods IM 661 1 51 Scenario Tenant Override function Event sequence SF Query function SF FA see ee Set Address function Auto Install Specific successful SF gt RA gt FA gt CA gt SR gt CR see F nd Set Address function Auto Install Specific unsuccessful SF gt RA FA gt CA gt SR Set Address function Auto Install Specific request not SF gt RA gt FA gt CA confirmed Set Address function Auto Install Incremental successful SF gt RA gt SR gt CR see 7 Set Address function Auto Install Incremental unsuccessful SF gt RA gt SR Set Address function Manual Install Remote Local successful SF gt RA gt SR CR after PC operator executes Manual Install Remote successful CR after PC operator executes Graphic examples are shown below in fe Figure 27 Query Example Node Address 0A Shown Rod 9g J D AS Q 9x X eo S OF c 2 NS d eo Ox x PP Ra 56 SE 970 e d SP SS Se oF lt i DS x x High g S Med a 4j Low of 2 Abs 0 2 10 S Inc 2 8 F1 10 1 81 61 41 81 61 41 81 41 41 4 5 L After button is released a 2 Press short lag may occur before a amp hold Query prompt ends t gt SF a Figure 28
26. 1 and all wiring between the 115 Vac source and the Power In plug 3 Remove power from the controller by opening circuit breaker CB1 Check the MCB power supply input fuses F1 and F2 with an ohmmeter See EE A good fuse has negligible resistance across it less than 2 ohms a Tfeitheror both fuses are blown replace them Go to step 4 b Ifthe fuses are intact the MCB is defective 4 Reconnect the Power In plug and disconnect all other connectors on the MCB Cycle power to the controller close and then open CB1 and check the power fuses a Ifboth fuses are intact go to step 5 b Ifeither fuse blows the MCB is defective 5 Reconnect the Aux Out connector plug to the MCB Cycle power to the controller and check the power fuses a If both fuses are intact the problem is indeterminate Obtain factory service b If either fuse blows it is likely that the SLTA is defective IM 661 1 IM 661 1 Figure 35 MCB Power Supply Terminals POWER FUSES BUSSMAN GDC T2A Fuse F1 Fuse F2 18 24 VCT AC AC GND GND POWER IN AUX OUT A Troubleshooting Communications Problems If you suspect that a network communications problem exists you can verify it by doing a Wink command or by sending a service pin message The Wink is a network message sent from the MCG to a particular node and the ser
27. 47 48 Figure 21 Select Function Event Query 2 amp e a P F NA e S gt S 3 S x PA x x Query GPF N S e lt lt ES ES 2 a Med a Low i O Off Abs 0 2 10 20 2 8 10 d Release button anywhere 2 Press EE Within prompt window to amp hold start Query function Figure 22 Select Function Event Set Address AN d a 2 SF SC 3 e amp amp Set Addr SS KS S KS eS LS S Q a Q High o i 1 S Med i a i Low i 1 O Off Abs 0 2 10 20 2 8 10 Release button anywhe 5 0 amp hold start Set Address functi Request Address RA The RA event allows you to request an address for a node during the Set Address function The way you request the address depends on the installation method you re using For the Auto Install methods you enter the exact address using the button Specific or enter nothing to get the next available address Incremental For the Remote Local Manual Install method you enter nothing since the address is requested at the PC The RA event consists of two Status LED prompts one to set the HI digit medium brightness and one to set the LO digit low brightness You request a digit by pressing the button that many times during the proper prompt When you press the button the LED goes to high brightness S
28. A 000000000000 ode 08 Location 09 N A 000000000000 Node 09 Location 0 000000000000 ode 10 Location 0B N A 000000000000 ode 11 Location 0 000000000000 Node 12 Location OD N A 000000000000 Node 13 Location 0E WA 000000000000 ode 14 Location OF 000000000000 Node 15 Location 10 WA 000000000000 ode 16 Location MicroTech Direct 11 10 85 14 04 29 Figure 19 Network Management Screen T f la File Screen Comm Datalog Support Window Help END gt Node Installation Auto Install Timer Disabled Current Node Neuron ID 000039484600 Manual Install Node Address _ 01 Manual Install No Wink Node Wink Node Address Wink MicroTech Ready I Direct 11710795 14 06 Installation Methods The HP unit controller is a LonWorks node The Neuron chip in each LonWorks node has a unique 6 byte Neuron ID string that is assigned during manufacturing During the installation process a logical network address is associated with an HP unit controller by means of the Neuron ID In the following discussion the terms node and HP unit controller are interchangeable Any of four installation methods can be used to do this 1 Auto Install Specific 2 Auto Install Incremental 3 Manual Install Remote Local 4 Manual Install Remote As used here the term Auto Install means that the MCG automatically proc
29. A event Note The HI and LO digits are hexadecimal Since a maximum of 64 hex 40 nodes are allowed the range of HI digits is 0 to 4 and the range of LO digits is 0 to F Decimal equivalents to alphabetic hex digits are A 10 B 11 C 12 D 13 E 14 F 15 49 50 Figure 24 Feedback Address Event Sa N 2 2 2 FA X ga oS SE oS SA 23 shown 2 SAV od ga 6 2 S dV High 3 If feedback amp tual 2 address Query Med normal LED indicatic a resumes if feedbacl Low requesteaddress d Set Address CA event begins Off w gt Inc 5 1 61 5 1 61 61 5 E 91 61 9 Confirm Address The CA event allows you to confirm a specific address you requested during the Set Address function If no address was requested the CA event does not occur If the address is correct simply press the button once during the prompt If the address is not correct do nothing The prompt is a series of quick flashes on 0 5 s off 0 5 s at medium brightness If you press the button to confirm the address request the prompt and the CA event ends immediately and the SR event begins If you do not press the button the prompt and the CA event end after 10 seconds and normal LED indication resumes See fa Figure 25 Confirm Address Event 9 lt KA
30. Address variable which is set by using the Monitor program and should match the subnet address of the MCG Monitor For more information see MCG Setup Variables below The MicroTech network address of the MCG LMP is set by using the hex switches and should have been done during the MicroTech network commissioning MCG OP The subnet address is set in the MCG s Subnet Address variable which is set with the Monitor program Unlike all other MicroTech controllers the hex switches on the MCG OP are ignored unless they are set to FF No matter what value the hex switches are set to the MicroTech network address of the MCG OP is 00 00 In most cases the default subnet address 01 need not be altered For more information see MCG Setup Variables Set up the MCG Use the Monitor program to set the following variables in the MCG a Gateway Configuration MCG Setup screen b Number Of Controllers MCG Setup screen c Node x Location Description where x is the node address Network Database screen Note The Node Location Description variables are for documentation purposes only Setting them is optional Do not set the Unit Type variables yet they are set after the controller addresses are assigned Verify that the Serial LonTalk Adapter Status variable shows OK Configured If it does not see Troubleshooting the SLTA in the Test Procedures section For each MicroTech 2000 controller 1 assign an address 2
31. B so in most cases you don t need to worry about this requirement d If you install a repeater and another segment you must obtain and install a termination resistor in that segment The termination resistor can be located anywhere in the segment e When you install more than one MCG on the same segment MicroTech BAS networks you must remove the resistors from one MCG Extending Cable Length with Special Bus Topology You can extend the maximum total cable length without using a repeater by using doubly terminated bus topology instead of free topology See eae gt trade offs are 1 this special bus topology must be rigorously followed during the ins d subsequent retrofits and 2 two termination resistors must be installed at the ends of the bus Figure 15 Doubly Terminated Bus Topology Network TR 105 ohm The restrictions on doubly terminated bus topology are as follows 1 The maximum number of nodes per segment is 64 not including SLTA 2 The maximum total bus length depends on the wire size see Cable Specification for details Wire Size Maximum Cable Length 22 AWG 4590 ft 1400 m 16 AWG 8855 ft 2700 m 3 The maximum stub length 1s 9 8 ft 3 m A stub is a piece of cable that is wired between the node and the bus See Fi Note that 1f the bus is wired directly to the node there is no stub and thus the stub le If you are wiring to a field terminal strip on a unit e g HP be sure to account for any f
32. CB by setting the Soft Reset variable to Reset or by tuning the controller off and back on again 5 Correct the MCB s checksums by setting the Program Checksum variable equal to the EOS Checksum variable 6 Reset the MCG The MCB s program starts running again If the subnet address changed it also reconfigures the MCB to the SLTA Note If you want to change the subnet address after the HP unit controllers have been addressed you must readdress the unit controller in order to transmit the new subnet address Number of Controllers The Number of Controllers variable specifies how many MicroTech 2000 unit controllers are polled by the MCG LMP for network communications It is a decimal number Note that the variable must be set only in an MCG LMP which is part of the MicroTech only BAS that includes an level 1 NMP MicroTech controller It allows the NMP to send time schedules and system commands to the units and to receive alarms from the units Note If the MCG configuration is MCG OP MCG or MCG Monitor the Number Of Controllers variable must be set to 0 Checksums Checksums are used by the MCB to verify the integrity of its program If the Program Checksum does not match the EOS Checksum after a reset occurs the program stops running The Program Checksum is adjustable the EOS Checksum is not Some variables for example Gateway Configuration cause the EOS Checksum to change when they change Theref
33. CHELON 73000 NETWORK Top View Bottom View cns no a0014 Software ID MicroTech MCG software is factory installed and tested in each panel prior to shipment The software is identified by a program code also referred to as the Ident which is printed on a small label affixed to the MCB An example of this label is shown in e The program code is also encoded in the controller s memory and is available for display equipped with Monitor software Using Monitor software is the most reliable way of determining the controller s program code IM 661 1 IM 661 1 MCG program codification is as follows MCG 1U01A MicroTech Communications Gateway Program Number 1 MCG OP Level 1 Configuration 2 MCG Level 2 Configuration Units U Universal Units Version numeric Version Revision alphabetic a0136 Figure 5 Example of a Software ID Tag P N 860 654873B 60 0 MCB part number SOFTWARE MCG1U01A Program code Ident EOS NO 20 50 VENDOR S N 5554 VENDOR MDL 280 60 DATE CODE 11 95 This edition of this manual documents revision N of the standard MCG software and subsequent revisions of version 01 until otherwise indicated If your MCG software has a later revision code for example MCG1UOIT some of the details in this manual may not apply However since only very minor software changes are considered revisions any differences should be insignificant Software Com
34. G plug the RJ 45 connector into the Network port on the SLTA Set the subnet address at the MCG The way the subnet address is set depends on the MCG s configuration After you have set the subnet address you must reset the MCB This reconfigures the SLTA You can reset the MCB by 1 cycling power to the panel or 2 changing the Soft Reset variable to Reset MCG L2 In a MicroTech BAS network each HP communications bus must be connected to two MCGs One MCG is configured as an MCG Monitor and the second is configured as an MCG LMP These two MCGs serve different communications functions and both must be present and active for reliable network communications The subnet address which is a LonWorks address must be the same for both but each MicroTech network address must be different The hex switches on the two MCGs must be set to different values The LonWorks subnet address is determined by the hex switch value of the MCG Monitor Therefore the LonWorks subnet address for all HPs and the MicroTech network level 2 address of the MCG Monitor are the same For example if a the hex switch setting is 02 its MicroTech network address is 02 00 and its MicroTech 2000 subnet address is 02 The MCG Monitors hex switches should have been set when the MicroTech network was commissioned The MCG LMP has different LonWorks subnet and MicroTech network addresses The LonWorks subnet address of the MCG LMP is determined by its Subnet
35. Query Example Node Address 24 Shown e e OSE f y 2 x FOF WAS Ry a d SF d KA d NAS RO Ss M 00 XI SS SO N SR E KOE JO SSES Oh at 89 07 9 SP A ITI qp High PS g S Med 7 I Low 2 ofi i 2 Abs 0 2 10 3 E Inc 2 8 F1 5 did 5 14141414 5 ii L After button is released a 2 Press short lag may occur before amp hold Query prompt ends t SF FA gt 52 IM 661 1 Figure 29 Query Example Node Address 30 Shown Rod 3 lt e S 2 Kd 2 X FO amp SA os FS SRE aw S x x x d ee SG SS y SASI o lt ae 8 ax KS 9 gt N x High V VALL LA g S Med a Low i 2 offtt 2 Abs 0 2 10 gt inc 2 8 Fy 5 141414 10 E c L After button is released a 8 Press short lag may occur before a amp hold Query prompt ends 5 2 SF Fr Figure 30 Set Address Example Using the Incremental Auto Install Method Node Address Shown 2 lt 2 2 x S 2 e L ta KA LE 2 c A LS wie a o LO SO a WM lt KAN QU VS eS ae A S us DAS du x OS SEES ES SSE SE 2 KAS 4 SP 00 KEL SE SESS VS LE OS d o X lt lt m 3 mmmHENMHENENENEH CC Med LED State Low
36. actory wiring between the terminal strip and the MicroTech 2000 controller This wiring is considered part of the stub 4 Two 105 ohm 0 25 W 1 termination resistors are required in each segment One resistor must be located at each end of the bus Note that the 52 ohm resistor in the MCG which is factory installed across terminals FTT A and FTT B must be removed If the bus includes two MCGs the resistor in each MCG must be removed Cable Specification The twisted pair network communications cable for MicroTech 2000 LonWorks FTT 10 networks must 1 be approved by Echelon or 2 meet the Level 4 cable specification for 22 AWG 0 65 mm wire which was originally defined by NEMA Some local codes or applications may require the use of plenum rated cable The following cables meet this specification 19 20 Vendor Part no Wire size amp type Connect Air International W221P 1002 22 AWG PVC Phone 206 813 5599 W221P 2001 22 AWG plenum Belden 8471 85102 16 AWG PVC Phone 317 983 5200 16 AWG plenum Do not install the cable in the same conduit with power wiring The temperature of the cable must not exceed 131 F 55 C Note Ideally one continuous piece of cable should connect any two controllers This reduces the risk of communications errors If the cable must be spliced use crimp type butt connectors good or solder best Do not use wire nuts Wiring Instructions Wiring a MicroTech 2000 network is simpl
37. al Interoperable System Using Open Protocol Interface to MicroTech and MicroTech 2000 Equipment BAS by Others Level 1 DENEN T Open Protocol MCG L2 panel E o o E e Level 2 To additional Level 2 Controllers o LonWorks Subnet 1 Dae cence DD LD o 5 gt a0020 MicroTech BAS shows a typical MicroTech BAS application with a mixture of MicroTech and MicroTech ducts In these applications MicroTech 2000 controllers are integrated into a MicroTech BAS which includes a PC equipped with MicroTech Monitor for Windows software In the case of MicroTech 2000 controllers for water source heat pumps the MCG effectively substitutes for a Local Master Controller LMC which is included in LMPs and some NMPs Network functions are shared between two MCGs One configured as the MCG Monitor controls read and write requests from the PC to the MicroTech 2000 unit controllers The other configured as the MCG LMP controls alarms network read and write requests and time schedules sent to the MicroTech 2000 unit controllers from the NMP Both MCGs are required and must be connected to the LonWorks subnet IM 661 1 Figure 9 Typical MicroTech Only System with MicroTech and MicroTech 2000 Equipment Level 1 PC containing MicroTech gt di Monitor for Windows MCG LMP MCG Monitor level 2 controllers
38. all sensor functions can be thought of as combinations of events The following events are possible Event Name Brief description SF Select Function Allows you to select the wall sensor function you want RA Request Address Allows you to request an address assignment for a node FA Feedback Address Shows you the address you requested Set Address function Shows you the node s current address Query function CA Confirm Address Allows you to confirm that the requested address is correct SR Send Request Sends the requested node address to the MCG for processing CR Confirm Receipt Confirms that the node received an address and tells you what that address is Select Function SF The SF event is always the first event in any sequence It begins when you press and hold the button and it ends when you release the button The length of time you hold the button determines the wall sensor function that follows The Status LED provides visual feedback to let you know when to release the button you don t need a stopwatch See Figure 2o trough presen Figure 20 Select Function Event Tenant Override 2 nad ES e SF SS 3 d x X Ten Ovr KESE 9 MUS ES SO eS LS ee es i i Med JM MINI o i i Low O Off 5 Abs 0 2 10 20 gt 2 8 10 r Release button anywhere 2 Press within prompt window for amp Tenant Override function
39. allation process automatically changes the Unit Type variable from N A to the default setting WSHP Be sure to change it to LHP if necessary For MicroTech BAS applications set up the slave list in the NMP For MicroTech 2000 HP controllers the MCG LMP is emulating a MicroTech Local Master Controller Therefore the MCG LMP should be designated as WSLMP in the NMP s slave list and its Alarm Address variable should be set equal to the MicroTech network level 2 address of the associated MCG Monitor The MCG Monitor 15 used only for Monitor communications and should be declared as N A in the NMP s slave list Its alarm address variable is not used and may be left at its default value PC Access During the network commissioning process PC access to the MCG controller is required The connection point for the PC and the form of Monitor software supplied depends on the application The following table summarizes these situations Application MCG Panel config Monitor software PC connection at Open Protocol MicroTech 2000 MCG OP Standard Open Protocol DOS Port A on MCG only E based Open Protocol MicroTech and MCG Standard Open Protocol DOS Port A on OPM MicroTech 2000 mix E based MicroTech BAS Free 2 MCGs MCG Monitor Custom Windows based Port on NMP and MCG LMP 25 26 For the two Open Protocol applications the PC is connected only during the commissioning process It is typically a laptop see speci
40. ble When a service pin message has been broadcast this variable should be updated with the Neuron ID from the node that generated the message If no update occurs check the network wiring PC person Set the Manual Install Node Address variable to the address you want Then set the Manual Install flag to Yes Node person Confirm that the node received its address by watching the Status LED on the wall sensor Confirm Receipt event a Ifthe Status LED flashes the requested address you have verified communications and the assigned address b Ifthe Status LED does not flash an address normal LED indication continues the node did not receive an address Verify that the Auto Install Timer is disabled and check the network wiring Note You can also verify this by observing the network database at the PC The Neuron ID and the program code identification only appear in the MCG database at your specified node address if the address assignment was successful Both Repeat steps 2 through 6 for the next node IM 661 1 IM 661 1 gt To Manual Install a node with the Remote method 1 At the PC type the Neuron ID of the node to be re addressed into the Current Node Neuron ID variable field of the MCG L2 configured as the MCG Monitor important for correct addressing You can find the Neuron ID in the network database You may need to jot it down on a piece of paper Set the Manual Install Node Address variabl
41. constitute a service pin message Another way to send a service pin message is to press the Service button which is mounted on each MicroTech 2000 controller board Since a requested address is not required for a Manual Install this technique can be used instead of the wall sensor s Set Address function when you re installing with the Remote Local method Figure 26 Send Request and Confirm Receipt Events SA Kd N 8 gt XU Kd s OF SR CR Vi eo PO V S Dak OS 0 RT i LT oe SS shown je 2 e 2 SS oO wo CS o gy o E 59 MAE NN 5 High RE ee 1 S Med o 1 4 Low 1 1 1 O Off L 1 gt Inc 2 5 1 61 5 1 61 61 5 E 414 97919 If MCG sends address back CR event begins if not normal LED indication continues SR event begins request for address sent to MCG Confirm Receipt CR The CR event occurs whenever the node receives an address from the MCG regardless of the installation method If the CR event does not occur the address assignment was not successful In addition to telling you that the address assignment was successful by its existence the CR event tells you what the node address is In this sense it is identical to the FA event described above in Feedback Address FA pec Figs am Event Sequences and Examples The following table shows various event sequences that
42. dication continues the node did not receive an address Verify that the Auto Install Timer is set to a non zero value and check the network wiring Note You can also verify this by observing the network database at the PC The Neuron ID and the program code identification only appear in the database at the next node address if the address assignment was successful Go to the next HP wall sensor and repeat steps 2 through 5 41 See the Using the MicroTech Wall Sensor section below for more information on using 42 the tenant override button gt To Manual Install a node with the Remote Local method 1 PC person At the PC set the Gateway Configuration variable in one of the MCG L2s to Monitor and set the Auto Install Timer in this MCG L2 to Disabled The MicroTech level 2 address of this controller becomes the subnet portion of the subnet node address Both Using two way radios decide which node to address You can go in any order Node person Generate a service pin message which contains the node s Neuron ID and program code by doing one of the following a Using the tenant override button at the node do the Set Address function part of the Select Function event Do not enter an address Request Address and Send Address events Or b Press the SERVICE button on the MicroTech 2000 controller board PC person Watch the Current Node Neuron ID varia
43. e The Unit Type variables are part of the network database The next unassigned address is the next address after the highest address with a defined Unit Type For example if Node 03 Unit Type is set to HP and the Node 04 Unit Type through Node 40 Unit Type variables are all N A the next unassigned address is 04 This is true even if the Node 02 Unit Type is N A If all Unit Type variables are set to N A the next unassigned address is 01 Use the tenant override button on the HP wall sensor to do the Set Address function part of the Select Function event Do not enter an address Request Address and Send Request events This generates a service pin message which contains the node s Neuron ID and program code identification The service pin message is broadcast on the network and should be received by the MCG L2 Determine whether the MCG L2 received the service pin message and issued the next address by watching the Status LED on the wall sensor Confirm Receipt event a Ifthe Status LED flashes an address you have verified communications and the assigned address b Ifthe Status LED does not flash an address normal LED indication continues the node did not receive an address Verify that the Auto Install Timer is set to a non zero value and check the network wiring Note You can also verify this by observing the network database at the PC The Neuron ID and the prog
44. e to the address you want Then set the Manual Install flag to Yes Confirm that the node received its address by watching the network database This may take a minute or so a Ifthe Neuron ID moves to the specified node address you have verified communications and the assigned address b Ifthe Neuron ID does not move to the node address you specified the node did not receive the new address Check the network wiring Note You can also verify this by observing the Status LED at the node The Status LED flashes the address if the address assignment was successful Confirm Request event 43 Using the Wink Command to Verify Installation As discussed above during address assignment you can verify that a node is communicating and that it has the correct address by 1 observing the Status LED at the node or 2 observing the row in the network database for the node address you are trying to assign The Wink command provides another way to verify communications and address Its advantage is that it can be done at any time after a node is addressed not just during address assignment It requires two people one at the PC and one at the node A set of two way radios is recommended The Wink feature uses simple cause and effect logic to prove communications and addressing The cause is the Wink command which is issued by an operator at a PC and directed at a specific node address The effect is some physically observable ev
45. ee Figure 235 For example to set the node address 23 press the button twice when the LED is at medium brightness wait 5 seconds and then press the button three times when the LED is at low brightness Each prompt ends 5 seconds after the last button press To request the digit 0 do not press the button IM 661 1 IM 661 1 Note The HI and LO digits are hexadecimal Since a maximum of 64 hex 40 nodes are allowed the range of possible HI digits is 0 to 4 and the range of possible LO digits is 0 to F To enter an alphabetical digit press the button that many decimal times Decimal equivalents to alphabetical hex digits are as follows A 10 B 11 C 12 D 13 E 14 F 15 Tip There is a brief lag after you press the button before the LED goes to high brightness Just hold the button until you see the LED go high then release it Figure 23 Request Address Event g o S s ES RA x ES o x SES 23 shown KA SS SS SS Q eo Q ra es fe de High If either digit set a Med FA event begins a if neither digit se Low d SR event begins A Off gt E Inc 5 5 5 5 r Release button when LEE Press goes to high brightness amp hold a ES H there may be a short lag Feedback Address FA The FA event is used during the Query and Set Address functions The event looks the
46. ent s that occur in the equipment at that node address If the expected effects are observed in the expected piece of equipment network communications exist and the node address is correct If not there is either a communications problem or the node is not addressed properly The following table lists the Wink effects in MicroTech 2000 unit controllers MicroTech 2000 unit controller Wink effects simultaneous HP Status LED flashes on 0 5 s off 0 5 s for 15 seconds Unit fan turns off for 5 seconds on for 5 seconds and then off for 10 seconds Note The Wink command temporarily interrupts normal unit operation A NOTICE If a Wink command causes a component within a unit such as a fan to operate be sure that the unit has been mechanically commissioned before sending a Wink command to it gt To verify installation with the Wink command 1 Both Decide which node to Wink For example assume that you want to Wink the HP unit in Room 103 which is supposed to be at node address 03 2 Node person Go to the room where you expect to observe the Wink effects For the above example you would go to Room 103 3 PC person Set the Wink Node Address variable to the node address you want to Wink Then set the Wink flag to Yes Using the two way radio let the node person know that you have done this For the above example you would set the Wink Node Address variable to 03 4 Node person Wait for the expected effect s t
47. es the subnet portion of the subnet node address At the PC verify that the MCG MON Unit Type variable for each node address to be assigned is N A Go to the HP that should receive the next unassigned address in the MCG s network database The Unit Type variables are part of the network database The next unassigned address is the next address after the highest address with a defined Unit Type For example if Node 03 Unit Type is set to HP and the Node 04 Unit Type through Node 40 Unit Type variables are all N A the next unassigned address is 04 This is true even if the Node 02 Unit Type is N A If all Unit Type variables are set to N A the next unassigned address is 01 Use the tenant override button on the HP wall sensor to do the Set Address function part of the Select Function event Do not enter an address Request Address and Send Request events This generates a service pin message which contains the node s Neuron ID and program code identification The service pin message is broadcast on the network and should be received by the MCG L2 Determine whether the MCG Monitor received the service pin message and issued the next address by watching the Status LED on the wall sensor Confirm Receipt event a Ifthe Status LED flashes an address you have verified communications and the assigned address b Ifthe Status LED does not flash an address normal LED in
48. esses the address request which originates at the node and the term Manual Install means that an operator at a PC executes a command to assign the address The MCG automatically assigns an address only if the Auto Install Timer is set to a non zero value When the timer expires addressing with the tenant override buttons at the heat pump wall sensor is disabled One of the first three methods must be used initially to address a controller because they each pull out the node s Neuron ID and broadcast it on the network The MCG receives and stores the Neuron ID in the network database The fourth method can be used only to readdress a node after its Neuron ID is stored in the network database Methods 1 and 2 can be done by one person walking from one HP wall sensor to another Method 3 requires two people with two way radios one at the HP wall sensor and one at a PC Method 4 can be done by one person at a PC It may be best to choose one method and then stay with it until all the nodes are installed but this is not necessary The table below summarizes the characteristics of each installation method IM 661 1 IM 661 1 Install Method Auto Install Specific Auto Install Incremental Manual Install Remote Local Manual Install Remote Persons required at node and 1 at PC at PC Ability to assign specific address Yes No Yes Yes Ability to address node for first time Yes Yes
49. fications For the MicroTech BAS application the PC is usually the permanent on s However it could also be a laptop temporarily connected to the level 1 controller or another level 2 controller Note that you can connect directly to the MCG OP panel but you cannot connect directly to the MCG L2 panel Table 9 PC Specification for Network Commissioning Preferred Configuration Minimum Configuration Pentium processor 386SX processor 8 MB of RAM or better 4 MB of RAM 3 floppy disk drive 3 floppy disk drive Serial port 9 pin male Com or Com2 Serial port 9 or 25 pin male Com or Com2 Super VGA graphics capability graphics capability Bus mouse or trackball for Windows based Monitor only Serial mouse or trackball for Windows based Monitor only MS DOS 6 2 MS DOS 5 0 Microsoft Windows 3 1 for Windows based Monitor Microsoft Windows 3 1 for Windows based Monitor only only MicroTech Monitor software for MCG MicroTech Monitor software for MCG Ifa serial pointing device is used there must be another serial port Com1 or Com2 available for connecting the PC to the MicroTech controller The MCG s Monitor software is available in two forms DOS based and Windows based The DOS version is part of the standard Monitor software package for Open Protocol commissioning The Windows version is included in Monitor software packages that are custom made for MicroTech BAS applications PC Co
50. function by pressing and holding the tenant override button on the node s wall sensor until the Status LED stays on at medium brightness Select Function event This takes approximately 10 seconds Then release the button The LED goes off for at least 5 seconds flashes back the HI digit if non zero pauses for 5 seconds flashes back the LO digit if non zero pauses for 5 seconds and then returns to normal indication Feedback Address event 2 Count the number of HI digit flashes high 0 8 sec low 0 8 sec and LO digit flashes high 0 8 sec off 0 8 sec Remember to count in hexadecimal 0 F How the MCG Handles Addressing Conflicts Occasionally conflicts occur between existing address assignments and new address requests There are two possible conflicts 1 The node being assigned an address already has an address Its Neuron ID is thus in the network database 2 The address to be assigned has already been used Since the MCG coordinates node addressing it is able to resolve these conflicts and at the same time prevent nodes with duplicate addresses The following rules describe how it does this e requested address is always assigned This rule is true regardless of the address conflict if any and regardless of the installation method This assumes that the installation is performed properly for example if the Auto Install Timer is not set an address requested with an Auto Install method is not assigned 45
51. guide Figure 16 MicroTech 2000 Network Address Subnet HI digit Subnet LO digit Node HI digit Node LO digit 01 0F IM 661 1 IM 661 1 Table 8 Hexadecimal to Decimal Conversion Guide KS KES TS EE JE i w ER a N NINI NIN aluj gt v Go w oo a n Un N N un oo 5 un nt S EN DA D D A elo 27 oo Ea a LO ES LEN gt pe T After the subnet address is set in the MCG the MCG automatically assigns it to each of its associated nodes during the node installation In most cases the node address and its associated controller is defined and documented on a schedule before network commissioning begins The system engineer should keep in mind the following rules when doing this The node addresses of MicroTech 2000 HP controllers must start at 01 and continue consecutively In a MicroTech BAS network the maximum number of nodes is 40 hexadecimal decimal 64 for each MCG pair In an Open Protocol network no more than 20 hexadecimal 32 decimal nodes should be polled for each MCG There must be no gaps in the sequence and no duplicate settings Overview of Procedure 1 Assure that all units have been through the factory specified check test and start procedure If a
52. ice pin message is broadcast on the network and should be received by the MCG OP Determine whether the MCG OP received the service pin message and issued the next address by watching the Status LED on the wall sensor Confirm Receipt event a Ifthe Status LED flashes an address you have verified communications and the assigned address b Ifthe Status LED does not flash an address normal LED indication continues the node did not receive an address Verify that the Auto Install Timer is set to a non zero value and check the network wiring Note You can also verify this by observing the network database at the PC The Neuron ID and the program code identification only appear in the MCG database at the next node address if the address assignment was successful Go to the next HP wall sensor and repeat steps 2 through 5 33 See the Using the MicroTech Wall Sensor section below for more information on using 34 the tenant override button gt To Manual Install a node with the Remote Local method 1 PC person At the PC set the Gateway Configuration variable in the MCG OP to and set the Subnet Address variable to the specified subnet address Set the Auto Install Timer in the MCG OP to Disabled Both Using two way radios decide which node to address You can go in any order Node person Generate a service pin message which contains the node s Neuron ID and program code b
53. ified by the following 1 Free topology may be used 2 Only two terminations are required at each node 3 Those terminations may be made without regard for polarity 4 Ifyou use two MCGs connect them together in parallel and remove the terminating resistor from one of them MicroTech 2000 controllers are equipped with field terminals for the network communications terminations which are summarized in per Internal factory wiring connects the node to the field terminals Table 7 Network Communications Field Wiring Terminals MicroTech 2000 Controller Terminal A Terminal B MCG FTT A on TB2 FTT B on TB2 HP 5 TBI 6 1 Network wiring is completely independent from controller addressing Therefore the networked controllers can be wired in any order Thus an electrician can wire the network and a technician who has no knowledge of the wiring can address the controllers later during the commissioning process Use the following guidelines as you wire the network e Before beginning unplug the RJ 45 connector from the Network port on the SLTA in the MCG e Observe the topology restrictions described above e Use care to assure that no shorts or opens exist in the network e Make certain to connect to the proper terminals on the HP Note Voltages are present on some field wiring terminals of the HP If the communications wire is connected to the wrong terminals it can destroy the communications comp
54. k wiring Interoperable Systems E typical interoperable system applications In these applications h 2000 rs are integrated into a third party BAS which includes a human machine interface such as a PC The systems are interoperable because the McOuay International eguipment and the BAS are able to communicate through a common protocol Pure LonWorks In Ft which shows the ideal interoperable system the third party BAS is capable of im g LonWorks technology Because the BAS uses LonWorks the communications protocol is LonTalk and thus the MCG is not required Figure 6 Typical Interoperable System Using LonTalk Interface BAS by others implementing i LonWorks Technology MicroTech 2000 IM 661 1 See Open Protocol MicroTech and MicroTech 2000 Mix IM 661 1 No MCG Required LonTalk and LonMark Infi which shows the ideal interoperable system the third party BAS is capable of ud LonWorks technology and the MicroTech 2000 products are LonMark certified Because the BAS uses LonWorks the communications protocol is LonTalk and thus the MCG cannot be used LonMark certified products conform to interoperability standards that are increasingly being accepted and used throughout the HVAC industry These standards define the minimum requirements for the variables passed over the network e g supply air temperature for a heat pump and their formats e g units of degrees Celsius The common LonTalk protocol al
55. ller are nodes on the subnet A node is any device that contains a Neuron chip From the MicroTech side of the MCG the MicroTech 2000 nodes appear as level 3 slaves Thus the Open Protocol and MicroTech BAS functions in the NMP and PC operate the same way they do for MicroTech controllers IM 661 1 13 Installation Panel Location and Mounting The MCG is suitable for indoor use only lists allowable temperature and humidity ranges Locate the panel or panels at a convenie and allow adequate clearance for the door swing Mount each panel to the wall with screws or bolts It weighs approximately 50 pounds The panel has four Y inch keyslot openings at the corners Panel dimensions are shown in Ft The panel is equipped with special door hinges that have a friction adjustment screw By adjusting this screw you can prevent the door from swinging open or closed unexpectedly Table 6 MCG Panel Environmental Specifications Panel State Temperature Relative Humidity Operating 32 100 F 0 37 C 25 95 noncondensing In storage 4 140 F 20 60 C 0 95 noncondensing Figure 10 MCG Panel Dimensions 7 8 22 Dia knockouts 4 on left and right sides Hinge friction adjustment screw ES 18 1 4 1464 S 1 4 6 Dia mounting slots 4 1 10 17 3 8 12 3 4 441 324 50 508 7 14 184 1 3 4 ma S FO T
56. lows the different products to speak the same language the LonMark standards allow different products to know what to say to each other with a minimum amount of systems integration effort Note LonMark certified MicroTech 2000 products are not yet available The software for the MicroTech 2000 water source heat pump is not LonMark certified Open Protocol MicroTech 2000 Only Sed an interoperable system in which the third party BAS is communicating with ch 2000 controllers through a single connection Because the BAS in this application is not capable of implementing LonWorks technology the MCG and Open Protocol are required The MCG OP controller is used since the MCG is substituting for an OPM In an Open Protocol environment the refresh rate for each point accessed through an MCG depends on the total number of points polled Each MCG can communicate with a maximum of 64 controllers Temperature control companies should set limits on how many controllers are connected to each MCG and how many points each controller polls In general no more than 32 controllers should be connected to an MCG and each controller should poll no more than 20 points This gives acceptable refresh rates for most systems However you may want to reduce the number of controllers or the number of points to achieve the refresh rate you want If other unit or auxiliary controllers in the MicroTech family are integrated into the system a separate connec
57. n MCG L2 Port B is for MicroTech network communications using the RS 485 interface standard The communications rate is 9600 bps Port A in MCG OP Port A is for communications with 1 PC using the RS 232C interface standard or 2 a third party building automation system using Open Protocol and either the RS 232C or the RS 485 interface standard The communications rate is 9600 bps Port B in MCG OP Port B is for communications with the SLTA using the RS 232C interface standard The communications rate is 19200 bps Serial LonTalk Adapter The Serial LonTalk Adapter SLTA is shown in Manufactured by Echelon and called SLTA 2 by them it contains a Neuron chip and firmware that performs most of the translation to and from the LonTalk protocol The SLTA used by McQuay International contains an FTT 10 free topology transceiver The LonWorks network connects to the SLTA at the Network port by means of an 8 pin RJ 45 connector The communications port on the MCB connects to the SLTA at the Serial I O port by means of a DB 9 connector Both connectors are included in the MCG The SLTA receives its power from a power supply in the MCB Note that the SLTA has a power switch which should always be left in the on 1 position Figure 4 Serial LonTalk Adapter SLTA Power Switch EN Ee ejo z o amp lo SERVICE O SERVICE REQUEST E
58. n HP has not been through this procedure it should not be powered up because mechanical damage may occur Since units must be powered during network commissioning do the check test and start procedure on all HPs prior to the network commissioning Verify the network wiring Check that the network wiring was done according to the instructions in Field Wiring All MicroTech 2000 controllers are connected to the network cable and all units have power If this is MicroTech BAS network verify that the factory installed resistor across FTT A and FTT B has been removed from one of the MCGs Use a voltmeter to check for stray voltage on the network a At the MCG place one lead on the control panel chassis ground and check the voltage at the FTT A and FTT B field terminals There should be no voltage b Ifthere is check the network wiring for sources of stray voltage Connect the PC and start the Monitor program 23 For basic information on how to load and use the Monitor program see the user s manual that was supplied with it For defintions of MCG terms see Applying the MicroTech Communications Gateway For more information on these and other MCG variables see 24 MCG Setup Variables below A PC is required to set up the MCG and do some of the optional network management methods The connection point depends on the application See PC Access below for information At the MC
59. n if the Serial LonTalk Adapter Status variable shows OK Configured To reconfigure the SLTA 1 Set the Reconfigure SLTA variable to Yes 2 Reset the MCB by doing one of the following a Cycle power to the panel with the circuit breaker CB1 b Set the Soft Reset variable to Reset Node Installation The process of node installation involves three steps 1 Assign a subnet node address to a controller 2 Verify communications 3 Verify the address assignment Since the MCG sets the address via network communications these three steps can be accomplished at the same time at each unit For example if you successfully set a node address in a HP unit controller you have also verified that communications exist between the MCG and that controller T and E the network database and network management Monitor screens bas ris shown DOS based Monitor is similar You use these screens during the node installation process Figure 18 Network Database Screen 1 of 4 shown File Screen Comm DataLog TIS DUIS Hm ane LonWorks Network Database 07 to 70 hex 01 WSHP 000039473000 Room 101 WHPE10 02 WSHP 000039486600 Room 102 WHPE10 03 WSHP 000039478800 Room 103 WHPE10 04 LHP 000039484600 Room 104 WHPE10 05 N A 000000000000 ode 05 Location 06 N A 000000000000 Node 06 Location 07 N A 000000000000 Node 07 Location 08 W
60. n set the Manual Install flag to Yes Node person Confirm that the node received its address by watching the Status LED on the wall sensor Confirm Receipt event a Ifthe Status LED flashes the specified address you have verified communications and the assigned address b Ifthe Status LED does not flash an address normal LED indication continues the node did not receive an address Verify that the Auto Install Timer is disabled and check the network wiring Note You can also verify this by observing the network database at the PC The Neuron ID and the program code identification only appear in the MCG database at your specified node address if the address assignment was successful Both Repeat steps 2 through 6 for the next node IM 661 1 IM 661 1 gt To Manual Install a node with the Remote method 1 At the PC type the Neuron ID of the node to be re addressed into the Current Node Neuron ID variable field You can find the Neuron ID in the network database You may need to jot it down on a piece of paper Set the Manual Install Node Address variable to the address you want Then set the Manual Install flag to Yes Confirm that the node received its address by watching the network database This may take a minute or so a Ifthe Neuron ID moves to the specified node address you have verified communications and the assigned address b Ifthe Neuron ID does not move to the node address
61. nnection Cable An RS 232 communications cable kit that allows a PC to be directly connected to any MicroTech controller is available from McQuay International The part number is 0057186802 The cable has a female DB 9 connector for connection to the PC s 9 pin serial port If the PC has a 25 pin serial port obtain an adapter The cable length is 12 feet MCG Setup Variables The MCG s setup variables can be accessed with a PC running the appropriate Monitor software See Windows based Monitor is shown DOS based Monitor is similar After the network is ned most variables should not need to be changed unless a HP controller is added or deleted IM 661 1 For defintions of MCG terms see Applying the MicroTech Communications IM 661 1 Gateway gt Figure 17 MCG Setup Screen E MicroTech Monitor 1 0 Genric Building MCG MON Monitor MCG File Screen Comm Datalog Support Window Help 8 x AL lt Ls roe gt MCB Setup Gateway Configuration MCG Monitor Number Of Controllers Program Checksum 0 EOS Checksum Subnet Address Soft Reset Program Running e Retransmit All Writes Program Code SLTA Setup Serial LonTalk Adapter Status MCG2U01M OK Configured Reconfigure SLTA you must reset MCB No MicroTech Ready Gateway Configuration Direct 05 19 98 08 29 80241 The Gateway Configuration va
62. ntroller You can reset the controller by setting the Soft Reset variable to Reset or by cycling power to the panel e Ifthe checksums match and the problem persists try downloading the program again e Ifthe amber LED remains off the MCB is likely defective Troubleshooting Power Problems The MCB receives 18 Vac center tapped power from transformer T2 It then distributes 12 Vdc power to the SLTA A problem that exists in any of these components can affect the MCB and thus the entire control system Power problems can be caused by an external short which can blow a fuse or a defective component which can either blow a fuse or create an excessive load on the power supply An excessive load can lower the power supply voltages to unacceptable levels Use the following procedure to isolate the problem This procedure may require two or three spare MCB fuses see parts list Refer to the panel wiring diagram E as you proceed To troubleshoot power problems 1 Verify that circuit breaker is closed 2 Remove the MCB Power In terminal strip connector and check for 9 Vac between the terminals on the plug corresponding to terminals 2 and 3 on the board see Fi E Then check for 9 Vac between the terminals on the plug nb esr the board Readings of 9 12 Vac are acceptable a If9 Vacis present between both sets of terminals go to step 3 b If9 Vac is not present between both sets of terminals check transformers T2 and T
63. o occur They should happen soon after the Wink command is sent within a minute For the above example you should see the Status LED on the wall sensor start flashing If the unit s fan was off you should hear it come on for 5 seconds If the unit s fan was on you should hear it go off for 5 seconds come on for 5 seconds go off for approximately 10 seconds and then come on again See Using the Query If the Wink effects do not occur use the wall sensor to Query the node for its address If the node Feature to Verify address is correct check for network wiring problems Address below 44 IM 661 1 For detailed information see the Using the MicroTech Wall Sensor section IM 661 1 below Using the Service Pin Message to Verify Communications A service pin message is a network message that is generated by a node and broadcast on the network It contains the node s Neuron ID and program code The MCG continually listens for service pin messages If it receives one when the Auto Install Timer is disabled it places it in the Current Node Neuron ID variable s field You can use this fact at any time regardless of whether the node has address to verify network communications One person can use this method but two are recommended To verify communications with a service pin message 1 At the PC verify that the MCG s Auto Install Timer is set to Disabled 2 At the PC verify that the MCG
64. onductors The resistance across this transformer is approximately 6 ohms If all boards are disconnected from the network the resistance should be approximately 52 ohms which is the resistance of the termination resistor s Jf only one controller is left connected it appears as a short Troubleshooting the SLTA Troubleshooting the SLTA is limited to verifying that it has power and verifying that it is configured Power When the SLTA is powered up its Service LED should flash on for about one half second and then go off If the LED does not flash check for 12 Vdc at the power plug If there is power replace the SLTA see below Configuration The Serial LonTalk Adapter Status variable tells you whether the SLTA was successfully configured If it shows Error Unconfigured do the following e Verify that the cable is connected between the SLTA serial port and the correct communications port on the MCB port A for MCG configuration port B for MCG OP configuration 59 e Verify that the SLTA has power See Power above e Ifyou find and correct a problem reset the MCB by 1 cycling power to the panel or 2 setting the Soft Reset flag to Reset The SLTA holds its configuration data in EEPROM which has a maximum write limitation The source of the configuration data is the MCB If the MCB s Reconfigure SLTA flag is set to Yes it writes the configuration data to the SLTA when it resets
65. onents of all controllers connected to the communications wire These boards are not replaced under warranty The resistance across the conductors from the termination resistor s should be approximately 52 ohms but this resistance appears on an ohmmeter only when all nodes are disconnected from the network cable This is true because the impedance across an unpowered FTT 10 transceiver is approximately 6 ohms Because disconnecting all nodes may be a difficult and time consuming task we recommend not doing it unless communications problems are discovered during the commissioning process IM 661 1 See the Cable Specifications section for details IM 661 1 e When making wire splices and multiple wire terminations always match wire color to reduce the risk of shorts This precaution is especially important when wiring ring topologies e Though free topology allows for very flexible ad hoc wiring it is recommended that the installing contractor record the physical locations of the cable runs and the controllers on a floor plan This facilitates troubleshooting any network communications problems that may occur during installation or in the future e By looking at the internal factory wiring assure that each node except SLTA is connected to the network The connection at a MicroTech 2000 controller is typically an insulation displacement type IDC plug in connector These connectors should be connected to their controller
66. ore if you change one of these special variables you must then 1 reset the MCB 2 set the Program Checksum equal to the EOS Checksum and 3 reset the MCB again Subnet Address The Subnet Address variable specifies the subnet address for all MicroTech 2000 unit controllers associated with the MCG OP and MCG LMP configurations For the MCG and MCG Monitor configurations the subnet address is the same as hex switch setting of the MCG If you change the subnet address the SLTA must be reconfigured and the nodes must be re addressed if they had previously been addressed In this instance the MCB automatically reconfigures SLTA after it is reset Retransmit All Writes The Retransmit All Writes variable is useful only in a MicroTech BAS It causes the MCG LMP to send NMP schedule and system command information to each unit These writes automatically occur every 5 minutes but if you want them to occur immediately set this variable to Yes The information is sent once and this variable automatically returns to No SLTA Variables The Serial LonTalk Adapter Status variable indicates whether the MCB has sent configuration data to the SLTA If it has the variable shows OK Configured Otherwise the variable shows Error Unconfigured IM 661 1 IM 661 1 You can force the MCB to reconfigure the SLTA with the Reconfigure SLTA variable The SLTA must be reconfigured if it is replaced eve
67. patibility This release of MCG software allows systems using the MicroTech proprietary protocol to communicate with the MicroTech 2000 family of LonWorks based water source heat pump controllers The current software compatibility for standard MCG software is summarized wildcard character can be any letter If you have a version of MicroTech 2000 unit controller software that is later than the compatible programs shown in it is likely that program MCG U01 x is compatible with it however it may not be To find ure contact McOuayService Table 5 Program Code MCG U01N Software Compatibility Unit Type Compatible MicroTech 2000 Programs Incompatible MicroTech 2000 Programs HP WHPEID none Note The MCG cannot be used with LonMark compatible MicroTech 2000 HP controllers Applying the MicroTech Communications Gateway Networks that include both MicroTech 2000 and MicroTech controls require a MicroTech Communications Gateway The MCG translates between the proprietary MicroTech network protocol and LonTalk the protocol of MicroTech 2000 unit controllers Devices using the MicroTech protocol include 1 unit and auxiliary controllers in the MicroTech family 2 PCs equipped with MicroTech Monitor software and 3 building automation systems by other manufacturers using Open Protocol The term MCG is used to refer to MicroTech Communication Gateways in general when the particular application or variation is not importan
68. placement MCB at the building site if a PC equipped with that job s Monitor software is available Refer to the user s manual supplied with the Monitor software for more information Parts List Component Designation Description Part No MCB Microprocessor Control Board 654873B 60 SLTA Serial LonTalk Adapter 594443B 01 TI Transformer 115 24 Vac 606308B 01 T2 Transformer 24 18 Vac Center Tapped 467381B 14 1 Circuit Breaker 350A733H03 Fuse MCB Input Power 2 A Bussman No GDC 2A 658220A 01 Fuse MCB Communication Ports 0 25 A 658219 01 PC Communications Cable Kit 0057186802 Notes If desired the factory can load the correct software into the replacement MCB prior to shipment IM 661 1 IM 661 1 61 62 IM 661 1 IM 661 1 63 McQuay 13600 Industrial Park Boulevard P O Box 1551 Minneapolis MN 55440 USA 612 553 5330
69. r MEN 2 51 L 1 25 16 406 1 5 8 41 K 4 102 gt le 18 457 vo Left Side View Front View 7 8 22 Dia knockouts e 4 on top and bottom z 1 7 8 48 6 5 8 168 51 k 1 38 289 k 16 1 8 410 Note Dimensions are in inches millimeters in brackets Bottom View a0138 14 IM 661 1 See the Cable Specification section for cable details IM 661 1 Field Wiring Following are descriptions of the various field wiring requirements and options All possible field wiring connections are shown injFi The panel is divided into high and low voltage sections by a sheet metal barrier Pass power wires only into the high voltage section and network wires only into the low voltage section Wiring penetrations must be made only through the 7s inch knockouts provided Caution Do not pass network wires through the high voltage section or high voltage wires through the low voltage section Note Wiring must comply with the National Electrical Code and all local codes and ordinances The warranty is void if the field wiring is not in accordance with these instructions Power WARNING Electric shock hazard Can cause personal injury or death This equipment must be properly grounded All protective deadfront panels must be reinstalled and secured when power wiring is complete The MCG panel requires 115 Vac power
70. r to the panel s wiring diagram rene 22 01 Ee for more information Power Fuses Two identical 2 A fuses are located to the right of the Power In terminal strip These fuses are in the MCB power supply circuit Microprocessor Status LEDs The green red and amber LEDs on the MCB provide information about the operating status of the microprocessor Following is the normal start up sequence that the three status LEDs should follow when power is applied to the MCB 1 The red Reset LED turns on and remains on for approximately 5 seconds During this period the MCB performs a self test 2 The red LED turns off and the green Running LED turns on This indicates that the microprocessor has passed the self test and is functioning properly 3 The amber Active LED starts flashing indicating that the MCG s program is active IM 661 1 For more information refer to the Test Procedures section which is under Service Information IM 661 1 If the above sequence does not occur after power is applied to the controller there is a problem with the MCB or its power supply AEA ka kp the green red and amber status LED indications Table 3 Green and Red Status LED Indication Green LED State Red LED State Indication Off Off No power to MCB Off On Self test failure or power supply problem On Off MCB operating normally For longer than 5 seconds Table 4 Amber Status LED Indication
71. r the node address by doing the Request Address event The Status LED flashes the address you requested Feedback Address event If the LED flashes the correct address use the tenant override button to confirm the address request Confirm Address event If you confirmed the address the node performs the Send Request event and generates a service pin message which contains the node s Neuron ID and program code identification string The service pin message is broadcast on the network and is received by the MCG OP If you do not confirm the address the request is ignored and after a short delay the sensor returns to normal operation Determine whether the MCG OP received the service pin message and has issued the requested address by watching the Status LED on the HP wall sensor Confirm Receipt event a Ifthe Status LED flashes the address you requested you have verified communications and the assigned address b Ifthe Status LED does not flash an address normal LED indication continues the node did not receive an address Verify that the Auto Install Timer 15 set to a non zero value and check the network wiring Note You can also verify this by observing the network database at the PC The Neuron ID and program code identification string only appear in the MCG database at the requested node address 1f the address assignment was successful Go to the next HP wall sensor and repeat steps 2 through 8
72. ram code identification only appear in the MCG database at the next node address if the address assignment was successful Go to the next HP wall sensor and repeat steps 2 through 5 37 See the Using the MicroTech Wall Sensor section below for more information on using 38 the tenant override button gt To Manual Install a node with the Remote Local method 1 PC person At the PC set the Gateway Configuration variable in the MCG L2 to MCG and set the Auto Install Timer in the MCG L2 to Disabled The MicroTech level 2 address of this controller becomes the subnet address portion of the subnet node address Both Using two way radios decide which node to address You can go in any order Node person Generate a service pin message which contains the node s Neuron ID and program code by doing one of the following a Using the tenant override button at the node do the Set Address function part of the Select Function event Do not enter an address Request Address and Send Address events Or b Press the SERVICE button on the MicroTech 2000 controller board PC person Watch the Current Node Neuron ID variable When a service pin message has been broadcast this variable should be updated with the Neuron ID from the node that generated the message If no update occurs check the network wiring PC person Set the Manual Install Node Address variable to the required address The
73. re the MCG provides the following network management tool features e Automatic node installation addressing e Manual node installation addressing e Automatic address conflict resolution e Service pin message acknowledgment e Wink These features are described below in Node Installation There are other network management tools available for example a PC equipped with a PCLTA card and LonMaker software If you want you can use one of the other tools instead of the MCG In this case the MCG must still be set up so that proper data translation occurs Required Tools To commission the network you need the following tools 1 Voltmeter 2 Ohmmeter 3 PC equipped with Monitor software for the MCG 4 Cable to connect the PC to a MicroTech controller For more information on the PC and the cable see PC Access below About the Network Address For network communications to occur each controller in the network must have a unique network address The network address has two parts subnet address and node address Each part is a two digit hexadecimal number For example a unit at address 01 0F has a subnet address of 01 hexadecimal and a node address of OF hexadecimal decimal 15 The first digit in each part is called the HI digit and the second digit is called the LO digit Thus for the node address OF hexadecimal the HI digit is 0 and the LO digit is F sis a hexadecimal to decimal conversion
74. resses are defined and recorded on a schedule You must enter the assigned address so that the BAS network is complete gt To Auto Install a node with the Specific method 1 2 See the Using the 1 MicroTech Wall Sensor section below for more pA information 3 4 5 6 9 36 At the PC set the Gateway Configuration variable in the MCG L2 to MCG and set the Auto Install Timer in the MCG L2 for the time you estimate necessary to address all nodes The MicroTech level 2 address of this controller becomes the subnet address portion of the subnet node address Go to the first HP wall sensor Use the tenant override button on the wall sensor to do the Set Address function part of the Select Function event Enter the node address doing the Request Address event The Status LED flashes the address you requested Feedback Address event If the LED flashes the correct address use the tenant override button to confirm the address request Confirm Address event If you confirmed the address the node performs the Send Request event and generates a service pin message which contains the node s Neuron ID and program code identification string The service pin message is broadcast on the network and should be received by the MCG L2 If you do not confirm the address the request is ignored and after a short delay the sensor returns to normal operation Determine whether the MCG
75. riable tells you what the MCG s configuration is MCG LMP level 2 MCG Monitor level 2 or MCG OP level 1 An MCG OP has software that only works in an Open Protocol environment and has internal wiring set up for this purpose An MCG L2 panel may be configured as either an MCG Open Protocol level 2 MCG Monitor or an MCG LMP MicroTech BAS It cannot be used as an MCG OP To change the MCG s configuration l Set the Gateway Configuration variable as required Configuration Application MCG OP Level 1 Open Protocol applications DOS Monitor MCG Level 2 Open Protocol applications DOS Monitor MCG LMP MicroTech BAS applications Local Master Panel function Windows Monitor MCG Monitor MicroTech BAS applications Monitor function Windows Monitor Set the number of controllers The number of controllers depends on the MCG configuration Configuration Number of Controllers MCG OP Always 0 Open Protocol level 1 using MCG OP MCG Always 0 Open Protocol level 2 using MCG L2 MCG LMP Number of MicroTech 2000 unit controllers connected to the MCGs MCG Monitor Always 0 27 3 Ifthe configuration is MCG OP or MCG LMP set the Subnet Address variable as required This variable is only adjustable when the Gateway Configuration variable is set to MCG OP or MCG LMP You may have to wait a few seconds after changing it before the change is reflected in Monitor screen 4 Reset the M
76. s Since controller addressing can be done remotely this eliminates the need for a technician to return to each unit during the commissioning process Note This guideline is the opposite of what is recommended for a MicroTech network Network Communications MicroTech Side MCG L2 panels level 2 require network communications wiring on the MicroTech side of the gateway As shown on the panel wiring diagram the twisted shielded cable should be wired to terminals B B and GND on terminal block TB2 For more information on wiring the MicroTech side of the network see the installation manual that was supplied with the level 1 controller for example the MicroTech Network Master Panel NMP or Open Protocol Master OPM Note Network communications wiring requirements for MicroTech 2000 networks are very different from those for MicroTech networks For example in a MicroTech network free topology does not apply a bus topology must be used and twisted pair unshielded cable cannot be used Network Commissioning This section discusses network commissioning for MicroTech 2000 networks in which there is an MCG It does not discuss the commissioning of a MicroTech network For information on that refer to the installation manual supplied with the level 1 controller e g NMP OPM or CSC The purpose of commissioning a MicroTech 2000 network is to establish and verify communications between the MCG and its associated unit controllers
77. s Current Node Neuron ID variable is set to 000000000000 This just makes it easier to see when a Neuron ID comes in 3 Go to the node you want to test and briefly press the Service button which is on the MicroTech 2000 controller board The red LED next to the button should light This generates and broadcasts the service pin message Note You can also generate a service pin message by using the wall sensor s Set Address function Just press and hold the tenant override button for more than 20 seconds release when the LED goes to high brightness This method works but only if the wiring between the wall sensor and the node is intact If there is any doubt use the SERVICE button 4 At the PC check the Current Node Neuron ID variable It should be non zero It doesn t really matter what the Neuron ID is just whether it is there If it is there network communications exist If not there is a problem Check the network wiring Using the Query Feature to Verify Address MicroTech 2000 unit controllers include a Query feature which can be used to check a unit s node address Because the Query occurs completely within the unit controller it cannot verify network communications Once a unit has an address it retains that address regardless of whether network communications exist The Query feature makes use of the tenant override button and Status LED To verify a node address with the Query feature 1 Select the Query
78. same in these two functions but its meaning is slightly different see below Using the Status LED the FA event shows the node address one digit at a time first the HI digit and then the LO digit Each digit is a series of flashes the flash count is equal to the digit To help you distinguish between the digits and other events there is a 5 second pause before the HI digit after the LO digit and between the two digits Each HI digit count is a flash from high brightness 0 8 s to low brightness 0 8 s Each LO digit count is a flash from high brightness 0 8 s to off 0 8 s See Figure 24 For the digit 0 no flashes occur and the two 5 second pauses around it HI or LO merge into a 10 second pause Query During the Query function the FA event tells you what the actual node address is if any You can tell whether the node has an address by looking at the LED during normal unit status indication If the LED s indication is at high brightness the node has an address If the LED s indication is at low brightness the node does not have an address i e it is unconfigured Set Address During the Set Address function the FA event tells you what specific address the controller thinks you requested during the Request Address event If no address was requested the FA event does not occur It allows you to verify that the requested address is correct before you are given the chance to confirm the request with the C
79. ss function allows you to address a node with the Auto Install or Manual Install methods As a safety the Auto Install methods work only when the Auto Install Timer at the MCG is set For the Remote Local Manual Install method the Set Address function is used to generate a service pin message IM 661 1 IM 661 1 Status LED Exercise How Bright is Bright The Status LED is capable of showing four brightness levels to convey information high medium low and off During normal operation the LED shows only two brightness levels however which two levels depends on whether or not the node has an address If it has an address the levels are high and off if not the levels are low and off During the Query and Set Address functions the LED may show all four brightness levels How bright is bright Following is an exercise that you can perform to see the LED at medium brightness Once you know what medium looks like you can also tell when the LED is at high or low because it is either brighter or darker by comparison To see the LED at medium brightness 1 Press and hold the tenant override button on a wall sensor for approximately 15 seconds Then release the button This starts the Query function During most of the first 10 seconds the LED should be flashing very rapidly After 10 seconds and until you release the button the LED glows at medium brightness Events The sequences of button presses and LED flashes that make up the w
80. t McQuay International produces two variations of the MCG One is a level 1 controller referred to as an MCG OP and the other is a level 2 controller referred to as an MCG L2 The MCG OP is the Open Protocol interface between a BAS network of an Open Protocol partner and MicroTech 2000 unit controllers The MCG L2 is used in both MicroTech BAS and Open Protocol networks It is the interface between the level 1 MicroTech controller and MicroTech 2000 unit controllers Open Protocol networks require only one MCG either an MCG OP or an MCG L2 This MCG handles all gateway functions MicroTech BAS networks require two MCG L2s The gateway functions are shared between two configurations of the MCG L2 The one configured as an MCG Monitor handles all read and write requests from the Monitor program This function is similar to the Open Protocol function of the MCG OP The other configured as the MCG LMP handles all network read and write requests from the MicroTech level 1 controller You specify the configuration for each in the MicroTech Monitor for Windows program See ee D or typical applications in which MicroTech 2000 products are used ld tains a the figures Symbol Description BAS Building automation system HP Water source heat pump LWC Loop Water Controller OPM Open Protocol Master ART Applied rooftop unit LMP Local Master Panel NMP Network Master Panel 2 MicroTech network wiring pen MicroTech 2000 LonWorks FTT 10 networ
81. tion from the BAS is required for each MicroTech controller Figure 7 Typical Interoperable System Using Open Protocol Interface to MicroTech 2000 Equipment Only BAS by Others Level 1 AD Open Protocol MicroTech MCG OP panel LonWorks Subnet ee en PETAR ae el A ec ml gt Up to 6 6 6 65 5 5 5 OO a0019 MicroTech 2000 Open Protocol MicroTech and MicroTech 2000 Mix p an interoperable system in which the third party BAS is communicating with a f MicroTech and MicroTech 2000 products through a single connection The OPM 15 required because the BAS is communicating with more than one MicroTech product through a single connection The MCG is considered a MicroTech product The MCG is required because the BAS in this application cannot implement LonWorks technology The MCG L2 panel is used here since the MCG is not substituting for an OPM For best performance connect no more than 32 MicroTech 2000 controllers to MCG L2 and poll no more than 20 information points per controller 11 For defintions of MCG terms see Applying the MicroTech Communications Gateway Note The LWC in Figure 8 is shown integrated via a separate BAS connection because quicker response times result Though not recommended it is also possible to use the LWC as a level 2 slave to the OPM The BAS is responsible for all communications between the LWC and the MCG Figure 8 Typic
82. verify communications and 3 verify the address These three tasks are collectively called installing a node There are four ways to install a node IM 661 1 See Node Installation below for detailed information on each method See the Using the MicroTech Wall Sensor section below for more information See the Applying the MCG section for more information IM 661 1 10 11 Auto Install Specific method Auto Install Incremental method Manual Install Remote Local method Manual Install Remote method readdress only In most cases node installation involves using the tenant override button and Status LED at each unit s wall sensor Set the Unit Type variables in the MCG This step can be done for each node after it is installed or after all the nodes are installed The Unit Type variables tell the MCG how to interpret and route data going to or coming from the unit controllers Water source heat pumps are manufacture in four types CCH Ceiling hung Single compressor and dual compressor Small vertical Single compressor only WM Console units Single compressor only LHP Large vertical Single compressor and dual compressor Set the Unit Type variables according to the following guidelines Unit Type setting Guidelines WSHP FCV WM CCH Single compressor units only LHP CCH Dual compressor units only LHP Single and dual compressor units Note The node inst
83. vice pin message is a network message sent from a node to the MCG If either message does not get to its destination a problem exists The service pin message verifies only communications The Wink verifies both communications and the node s address For more information see Node Installation in the Network Commissioning section If you know there is a communications problem use the following guidelines as you try to find it 1 Determine whether there is a pattern a Do you have problems with just one controller more than one controller or all controllers b Ifall controllers are not communicating check the connections around the MCB and SLTA verify that the SLTA is configured verify that the termination resistor is installed and look for shorts across the network conductors If the problem seems to be with the MCB or the SLTA obtain factory service c Ifa group of contiguous controllers is not communicating look for a disconnection If one controller is not communicating look for a disconnection and try swapping a known good controller If the good controller communicates the suspect controller is defective 2 The normal impedance across the two network conductors is negligible a If you use an ohmmeter to check the resistance across the two network conductors you must disconnect each terminal plug from its board This is because the FTT 10 transceiver on the board contains a transformer that is connected across the c
84. vice pin message is broadcast on the network and should be received by the MCG L2 If you do not confirm the address the request is ignored and after a short delay the sensor returns to normal operation 6 Determine whether the MCG L2 received the service pin message and issued the requested address by watching the Status LED on the HP wall sensor Confirm Receipt event a Ifthe Status LED flashes the address you requested you have verified communications and the assigned address b Ifthe Status LED does not flash an address normal LED indication continues the node did not receive an address Verify that the Auto Install Timer is set to a non zero value and check the network wiring Note You can also verify this by observing the network database at the PC The Neuron ID and program code identification string only appear in the MCG database at the requested node address if the address assignment was successful 9 Go to the next HP wall sensor and repeat steps 2 through 8 IM 661 1 See the Using the MicroTech Wall Sensor section below for more information on using the tenant override button IM 661 1 gt To Auto Install a node with the Incremental method 1 At the PC set the Gateway Configuration variable in one of the MCG L2s to MCG Monitor and set the Auto Install Timer in this MCG L2 for the time you estimate necessary to address all nodes The MicroTech level 2 address of this controller becom
85. y doing one of the following a Using the tenant override button at the node do the Set Address function part of the Select Function event Do not enter an address Request Address and Send Address events Or b Press the SERVICE button on the MicroTech 2000 controller board PC person Watch the Current Node Neuron ID variable When a service pin message has been broadcast this variable should be updated with the Neuron ID from the node that generated the message If no update occurs check the network wiring PC person Set the Manual Install Node Address variable to the desired address Then set the Manual Install flag to Yes Node person Confirm that the node received its address by watching the Status LED on the wall sensor Confirm Receipt event a Ifthe Status LED flashes the entered address you have verified communications and the assigned address b Ifthe Status LED does not flash an address normal LED indication continues the node did not receive an address Verify that the Auto Install Timer is disabled and check the network wiring Note You can also verify this by observing the network database at the PC The Neuron ID and the program code identification only appear in the MCG database at your requested node address if the address assignment was successful Both Repeat steps 2 through 6 for the next node IM 661 1 IM 661 1 gt To Manual Install a node with the Remote method
86. you specified the node did not receive the new address Check the network wiring Note You can also verify this by observing the Status LED at the node The Status LED flashes the address if the address assignment was successful Confirm Request event 39 40 For defintions of MCG terms see Applying the MicroTech Communications Gateway See the Using the MicroTech Wall Sensor section below for more information MicroTech BAS Network MCG L2 Panel This type of network uses two MCG L2 panels per LonWorks subnet Both panels are level 2 controllers and must be connected to a Network Master Panel NMP which is a level 1 device The PC running the Monitor for Windows job specific software is connected to a Network Master Panel NMP Prior to addressing the nodes establish MicroTech network communications between the NMP and the MCG L2 panels Refer to the NMP installation manual for instructions on establishing the MicroTech communications The two MCG L2 panels together provide all network communications services and system controls required by the HPs One panel must be configured as an MCG Monitor This MCG sets the HP unit controller addresses and provides the user interface The second panel is responsible for transmitting alarm and system status information and must be configured as an MCG LMP The subnet address portion of the subnet node address is determined by the level 2 address of the MCG which

Installation Manual 06/1998

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