20
Legend:
SQFC1 (MO) – OPEN torque-limit switch
SQFT1 (MZ) – CLOSE torque-limit switch
SQC1 (PO) – OPEN position-limit switch
SQT1 (PZ) – CLOSE position-limit switch
SQC2 (SO) – OPEN signalling switch
SQT2 (SZ) – CLOSE signalling switch
EH
– Anti-condensation heater
BQ
– Anti-condensation heater
CPT1AA
– Current position transmitter CPT
GS
– Power supply of current position
transmitter
M3~
– Three-phase motor
Both ends of all windings of the electric motor are brought out (in the wiring diagrams they are marked U1, U2, V1,
V2, W1, W2). The connection “star” or “delta” can be used for external connection. The electric motor in this actuator
has “star” connection, which means that the ends U2, V2, W2 are connected together and to terminal N. Terminal S is
usually not connected and serves to special purposes when bringing-out of electric zero of the winding is required.
Operation diagram of torque-, position-limit and signalling units
Fitting
open
Fitting
open
Full stroke
Full stroke
Contact open
Contact closed
Fitting
closed
Fitting
closed
Terminal No.
on terminal
block
Terminal No.
on terminal
block
