Installation instructions 3rm/24vac 3 installation, Wire module to controller, Connect module to plant – TREND 3RM_24VAC User Manual
Page 3: Ensure equipment input supply is switched off, Continued), Cable size 0.5 to 2.5 mm, Rly 3 3rm power supply rly 2 rly 1, Rly 3, Power supply, 24 v loop 24 v
3RM/24VAC Three Relay Module (24 Vac/dc) Installation Instructions TG200647 Issue1/C 02/04/07
3
Installation Instructions
3RM/24VAC
3
INSTALLATION
(continued)
Wire module to controller
8
IN 0V 24V
AUTO ON OFF AUTO ON OFF
H
T
J2
J1
FAN/
L
O
W
COO
L
/M
ID
RL1
RL2
NO
NC
C
NO
NC
C
HEAT
/HIGH
RL3
NO
NC
C
AUTO ON OFF
J3
IQ
3RM
24 V
0 V
OUT
0 V
IN
24 V
24 V loop
3RM
XRM
XRM
24 V loop
9
O
I
3RM
Connect module to plant
10
IN 0V 24V
AUTO ON OFF AUTO ON OFF
H
T
J2
J1
FAN/
L
O
W
COO
L
/M
ID
RL1
RL2
NO
NC
C
NO
NC
C
HEAT
/HIGH
RL3
NO
NC
C
AUTO ON OFF
J3
WARNING:
The wires may be connected
to hazardous voltages.
Disconnect power before
attempting any wiring.
Arc suppression
recommended
Relay Output Arc
Suppression Installation
Instructions TG200208
if TRM or HCM (see step 4)
if Binary Switching (TRM) (see step 4)
3RM
Rly 2
Rly 1
C
NO
NC
C
NO
NC
Cable size
0.5 to 2.5 mm
2
(14 to 20 AWG),
Cu only
Cable size 0.5 to 2.5 mm
2
(14 to 20 AWG), CU only
IQ
3RM
24 V
0 V
OUT
0 V
IN
24 V
24 Vac/dc
PSU
or using external 24 Vac/dc supply
either using IQ 24 Vdc Auxiliary Supply
C
NO
NC
Rly 3
3RM
Power Supply
Rly 2
Rly 1
C
NO
NC
C
NO
NC
C
NO
NC
Rly 3
Heat/High
Cool/Mid
Fan/Low
Note that external 24 V
supply should be
isolated or earthed
(grounded) to IQ earth
(ground); ensure
correct polarity
maximum current consumed from supply:
24 Vac 100 mA, 24 Vdc 45 mA
Contacts rated 5 A max. at 240 Vac single phase
only (Cosø>=0.4), and 30 Vdc (resistive load). 2 A
for 24 Vdc (inductive load, T<=30ms).
Ensure Equipment Input
Supply is Switched off
Power Supply
Input power
supply
Equipment
Equipment
1
Equipment
2
Power Supply
Equipment
Equipment
3/Heat
Equipment
2/Cool
Equipment
1/Fan
Equipment
Input power
24 V loop
24 V
Input power