15
５. CONNECTIONS OF EACH UNIT
５−１．Connection of power cable
The power requirement of this multi-unit case is 100V 〜 240VAC ±10%, 50/60Hz.
Apply power source within this specified range.
Before connecting power cable, FG terminals shall be grounded.. Grounding resistance shall
be according to D-class grounding(Resistance: below 100Ω).
After grounding and it becomes in safety condition, make wirings for power source and
others.
５−２
.
Connections of detector heads.
Terminal numbers ③,④,⑤ and ⑥ are the connection of detector head.
５−３．
Connections of relay outputs
RM-590 series provides relay outputs for 1st alarm, 2nd alarm and trouble alarm in each unit.
Also, buzzer unit provides relay outputs for total 1st alarm, total 2nd alarm and total trouble
alarm.
Rating of relay contact is 0.5A at 100VAC,1.5A at 30VDC(Resistive load).
When connecting the load above rating, use auxiliary relay circuit.
When the inductive load is used for alarm contact, connect an appropriate spark
killer to the load side.
５−４．Connection of 4-2mA output
The RM-590 series provides 4-20mADC output from each unit.
The load to be connected is up to 300Ω(Max.). Use a shielded cable equivalent to CVVS
for connection.
Load
RY
Power source for
auxiliary relay
Power source for utility
Multi-unit case
Terminal plate
Auxiliary
relay
Alarm contact
