Honeywell OELD - Electrical Connections

11
OELD Operating Instructions
4 Electrical Connections
4 Electrical Connections
Terminal Block 1 (TB1)
Number Marking Colour Description
1 +V Red Input power +ve
2 V Black Input power 0V
3 mA White mA Signal to Field Wiring
4 +V Red Auxiliary power e.g. Excel cross duct heater
5 V Black Auxiliary power e.g. Excel cross duct heater
Terminal Block 2 (TB2)
Number Marking Colour Description
1 +V Red Sensor power +ve
2 V Black Sensor power -ve
3 mA White mA Signal to gas detector (Optima, Excel, etc.)
4 485A Blue RS485+ to Optima or Excel
5 485B Orange RS485 to Optima or Excel
6 485A Blue Reserved for SHC1 connection
7 485B Orange Reserved for SHC1 connection
<Figure 8. OELD Electronics Module>