The IO-RM3 is intended for use with BMS controllers to convert an analogue control output to a binary,
heat/cool, staged or sequenced relay modes.
LEDs indicate correct operation and Hand/Off/Auto jumpers ease commissioning. Low current draw from 0-
10Vdc controller output means that the IO-RM2 can work successfully with most BEMS controllers.
Features:
Link selectable modes binary, heat/cool,
staged or sequenced
On/Off/Auto links for ease of
commissioning
DIN Rail mounting
Benefits:
Fault finding LED indication
Relay status LED indication
Input signal 0-10Vdc 1mA min. into 22kΩ
impedance
Output contacts 8A at 230Vac (resistive load)
Power supply:
24Vac ±15% @ 50Hz or
24Vdc +15% -6%, 65mA max.
Hysteresis ±0.2Vdc about switching points
Operating modes:
Heat/cool
3 Stage
1 of 3 Sequenced
Binary
LED indication:
Supply OK
Supply voltage low
Supply voltage high
Relay Status
Hi input voltage
Incorrect input mode jumper
selection
Low input voltage (only in 2-
10Vdc mode)
Manual override On/Off/Auto jumper selectable
Electrical terminals Rising cage connectors for
0.5-2.5mm² cables
Ambient range:
Temperature -10 to +40°C (14 to 107°F)
RH 0-80% non-condensing
Dimensions (H x W x H) 72 x 64 x 55
(2.83 x 2.52 x 2.17”)
Country of origin UK