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96389-08.2019-DGbFEIRu
Legend for circuit diagram Y / YY (part-winding start)
Power section
QA1
Main switch
QA2
Performance contactor part-winding I
QA3
Performance contactor part-winding
II
FC1.1
Motor safety switch
FC1.2
Motor safety switch
EC1
Compressor motor
BT1
PTC-sensor motor winding
BT2
Thermal protection thermostat
UC1
Terminal box compressor
X KK
Terminal strip in terminal box compressor
X SS
Terminal strip in external switch cabinet
Legend for circuit diagram YY (direct start)
= Installation outside of the explosion endangered area
Power section
QA1
Main switch
QA2
Performance contactor direct start
FC1.1
Motor safety switch
EC1
Compressor motor
BT1
PTC-sensor motor winding
BT2
Thermal protection thermostat
UC1
Terminal box compressor
X KK
Terminal strip in terminal box compressor
X SS
Terminal strip in external switch cabinet
5.5 Circuit diagrams for power section
ATTENTION Ensure that power is supplied via QA2 to winding 1 (50 %) (1U1 /
1V1 / 1W1) and via QA3 to winding 2 (50 %) (2U1 / 2V1 / 2W1). The
motor contactors (QA2 / QA3) are each to be rated for approx. 50%
of the max. operating current.
WARNING
With the installation of control and adjust parts the valid regulati-
ons for the explosion protection have to be observed!