Connect accessories in Control unit CU27-C |
27
CU27-C
External accessory connection
Notes
T71:0V
0V
Valve actuator heating
0V DC Power
Analog
outputs
T71:AO1
0..10V
Analog output
T71:24V
+24V
24V DC Power max. 750mA
T72:0V
0V
Valve actuator cooling
0V DC Power
T72:AO2
0..10V
Analog output
T72:24V
+24V
24V DC Power max. 750mA
T73:0V
0V
Changeover
0V DC Power
T73:AO3
0..10V
Analog output
T73:24V
+24V
24V DC Power max. 750mA
T74:0V
0V
Preheater
0V DC Power
T74:AO4
0..10V
Analog output
T74:24V
+24V
24V DC Power max. 750mA
T81:0V
PT1000 Temperature
sensor supply air
0V DC Power
Unive
rsal
inputs
T81:24V
24V DC Power max. 550mA
T81:REF
M
Reference
T81:UI1
B
Universal input
T82:0V
PT1000 Temperature
sensor outdoor air
0V DC Power
T82:24V
24V DC Power max. 550mA
T82:REF
M
Reference
T82:UI2
B
Universal input
T83:0V
PT1000 Temperature
sensor room
0V DC Power
T83:24V
24V DC Power max. 550mA
T83:REF
M
Reference
T83:UI3
B
Universal input
T84:0V
PT1000 Temperature
sensor preheater
0V DC Power
T84:24V
24V DC Power max. 550mA
T84:REF
M
Reference
T84:UI4
B
Universal input
Terminal
Description
Comment
BMS/GND
GND
BMS RS485 Reference
BMS/B
B-
BMS RS485 B-
BMS/A+
A+
BMS RS485 A+
Ext-link/0
0V
External components RS485 Power supply
Ext-link/24V
24V
External components RS485 Power supply
Ext-link/GND
GND
External components RS485 ref.
Ext-link/B
B-
External components RS485 B-
Ext-link/A+
A+
External components RS485 A+
254050 | A004
Summary of Contents for Topvex SR
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