Carel gaSteam UG045 - Operation and Control

Terminal Function Electrical characteristics
M1
M1.1 GND (G0)
M1.2 Controller power supply 24Vac +10%/-15% 50/60Hz
M2
M2.1
Main room probe input or
signal from external controller
0-1V, 0-10V, 2-10V, 0-20mA, 4-20mA, NTC 10 kΩ at 25 °C
M2.2 GND
M2.3 Probe power supply (+G)
+12 Vdc, maximum current that can be delivered 50 mA; protection
against short-circuits
G Probe power supply (+G) CAREL 0-10 V
M2.4
Digital input for backup/rotation
function
Maximum output current: 5 mA; maximum voltage with open
contact: 13 Vdc
M2.5
Limit humidity probe signal
input
0-1V, 0-10V, 2-10V, 0-20mA, 4-20mA, NTC
M2.6 GND
M2.7 GND
M2.8
Remote on/off contact digital
input
Maximum output current: 5 mA; maximum voltage with open
contact: 13 Vdc
M3
M3.1
Fieldbus
Tx/Rx-
M3.2 Tx/Rx+
M3.3 GND
M5
M5.1
Unit status contact
250 Vac; 2 A with resistive load; 2 A with inductive load(NO)
M5.2 Unit status contact common
M6
M6.1 Alarm common
250 Vac; 2 A with resistive load; 2 A with inductive loadM6.2 NC alarm contact
M6.3 NO alarm contact
M8
M8.1
Production request analogue
output
Output voltage range: 0-10V, max 10 mA
M8.2 GND
M9
M9.1
Backup and rotation contact
common
250 Vac; 2 A with resistive load; 2 A with inductive load
M9.2 Backup and rotation NO contact
M11 Ethernet port
M12
M12.1
BMS 485
Tx/Rx-
M12.2 Tx/Rx+
M12.3 GND
Earth connection
J18 pLAN/display terminal
J19
J19.1 Auxiliary/blower contact (NO)
250 Vac; 2 A with resistive load; 2 A with inductive load
J19.2
Auxiliary/blower contact
common
USBport (type A)
Ethernet RJ45 port
Tab.4.b
4.6
Operation and
control
Before describing the electrical connections to the terminals in detail, below is an introduction to the
humidifier control principles.
ENG
gaSteam - UG +0300090EN rel. 1.2– 09.10.2018
4. Electrical connections|33