Terminal markings
Mains voltage
Low-voltage
Assignment of terminals
22/258
Siemens Switzerland Ltd
HVAC Products
Use
L
Live AC 230 V basic unit
Protective earth
N
Neutral conductor
QX21
Assignment according to function
N
Neutral conductor
Protective earth
QX22
Assignment according to function
N
Neutral conductor
Protective earth
QX23
Assignment according to function
Use
Operator unit
BX21
Assignment according to function
M
Ground
BX22
Assignment according to function
M
Ground
H2
Digital / 0...10 V input
M
Ground
The 2 parameters
• Function extension module 1 (operating line 6020)
• Function extension module 2 (6021)
are used to define usage of the respective module.
User manual RVS61.843, RVS41.813
3 Mounting and installation
Space
Connector type
N
L
AGP4S.03E/109
T
AGP8S.04B/109
S
AGP8S.03B/109
Space
Connector type
AVS82.491/109
X30
AGP4S.02F/109
n
AGP4S.02F/109
n
AGP4S.02F/109
n
CE1U2355en_02
28. September 2009