Bacharach HGM300 - Alarm Relays

Instruction 3015-4149 7
HGM300 WIRING SCHEMATIC
GND
L N
MAIN
PWR
L N
AUX
PWR
MAIN
PWR
BKR
1C NO NC 2C NO NC 3C NO NC 4C NO NC
LEAK SPILL EVACUATE FAULT
ALARM RELAYS 5 AMP, 240 VDC
B A GND
RS-485
OPTIONAL
DUAL LOOP
4-20 mADC
COMMON
COMMON
LOOP 1 ZONE
LOOP 2 PPM
SPECIAL NOTE: TO ESTABLISH THE RS-485 COMMUNICATION LINK WITH THE RDM800 OR WITH A BUILDING
MANAGEMENT SYSTEM, USE #18 GAGE AWG, MULTI-STRANDED, SHIELDED AND TWISTED PAIR, INSTRUMENT
CABLE. ENSURE THAT THE DRAIN WIRE IS CONNECTED TO THE GND TERMINAL AT BOTH ENDS.