Honeywell SV2 Series User Manual page 37

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Certain models of the SV2 Series valves also have Modbus interface wiring as well as termination and bias resistor selections.
The Modbus interface is used for programming intelligent features and connection to a building automation system.
Fig. 20 and Fig. 21 show all of the wiring terminals inside the valve electronics enclosure. The factory wiring terminals can be
found in Table 7 while the field wiring terminals and designations can be found in
connections is shown below, relative to the callouts in the illustration above.
1. Mains Supply L1 and N
2. Ground Mains and Chassis
3. ILK Out/In, VPS Switch output, POC output, Main Valve 1/2
4. RS-485 Modbus (not present on BASIC Intelligence models)
5. Modbus termination and bias resistors (not present on BASIC Intelligence models)
6. Pressure connection for Pressure Module
7. Analog GND/IN for Fire Rate and O2 Sensor (used for future enhancements)
External – C6097/C437 pressure switches
NOTE: Use of certain terminals and items such as VPS Switch output, POC output, Modbus, and groupings is model
dependent. Refer to
SV2 Series Safety Shut-off Valves
V2F, V2V
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Table 8 for details.
SV2 SERIES SAFETY SHUT-OFF VALVES USER MANUAL
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Table 8. A summary of the possible field wiring
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