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Summary of Contents for Automatic Heating BCM
- Page 1 Modulex Boiler Communications Module - BCM Operating Instructions...
- Page 2 (all burners off), or a fault on the inserted burner or a fault that can not achieve the required target setpoint occurs. • BCM serves as a Back-up Controller in the event that the primary E8 Controller fails. • BCM can be selected as the Primary Controller instead of the E8.
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Page 3: Clearing Faults
Setpoint Mode (default setpoint = °C). The primary Boiler continuously. Pump must also be wired to the BCM so it will run when the BCM assumes control in the Back-Up Mode. 1.2.1 BCM FAULT RELAY WIRING If desired, pins 3 and 4 of connector Y4 (Figure 1-3) can be If a setpoint temperature lower than °C is desired, the... - Page 4 Modulex Controller Operation Remote Setpoint or Modulation Level signaling. In the event that the external control signal from the EMS or BAS is lost, the BCM will assume control of the Modulex Set point Ext sens Boilers if enabled by switch. When this occurs, the BCM Open 82°C...
- Page 5 2-position ON/OFF switch on the The Modulex Boiler is shipped with the BCM factory-installed, BCM. it will contain a 3-position switch mounted above the BCM TABLE 1-1. 3 - POSITION BCM SWITCH FUNCTIONS BCM 3 Position Switch (Equivalent Terminal in Modulex Wiring Diagram)
- Page 6 BCM Controller in the chain. Enabling the any network wiring connections. terminating resistor is accomplished by positioning jumper JP1 as shown in Figure 1-9 only on the BCM Board CAUTION contained in the last BCM Controller. It is imperative that polarity be maintained between all Modbus Network connections.
- Page 8 In order for the BCM Controller to be recognized by the Mod- 3011. To prevent communication dropouts, write the direct bus Master, a valid address must be set at each BCM on the drive modulation value at least 3 times within the Modbus Network.
- Page 9 APPENDIX B BOILER COMMUNICATIONS MODULE (BCM) BCM MODBUS COMMUNICATION & SUPPORT REQUIREMENTS The Modbus communication support requirements incorporated in the BCM are as follows: B-1.1 Function Codes The BCM supports the Modbus Function Codes SHOWN IN T able B-1. Table B-1. Supported Modbus Function Codes...
- Page 10 B-2.2 BCM CONTROLLER STANDARD HOLDING REGISTER ASSIGNMENTS The BCM Controller Holding Registers contain functions that are Read Only, Write Only or both Read & Write. The address assignments for these functions are listed in T able B-4 and are grouped into the following major categories: Control Registers, Operating Data Registers, System Data Settings and T est Registers.
- Page 11 Table B-4. BCM Standard Holding Register Address Mapping...
- Page 12 Modulex Controller Operation > Appendix B Table B-4. BCM Standard Holding Register Address Mapping - Cont.
- Page 13 APPENDIX B Table B-4. BCM Standard Holding Register Address Mapping - Cont.
- Page 14 Modulex Controller Operation > Appendix B APPENDIX B Table B-4. BCM Standard Holding Register Address Mapping - Cont.
- Page 15 DISTRIBUTED BY Telephone 1800 337 959 Facsimile +61 3 9310 5655 Email sales@automaticheating.com.au P.O. Box 35 Epping VIC 3076 Australia www.automaticheating.com.au...
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