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96389-08.2019-DGbFEIRu
5.7 Circuit diagrams for control section Y/YY part winding start
= Installation outside of the explosion endangered area
Legend for circuit diagram Y / YY (part-winding-start)
FC1.1
Motor safety switch
FC1.2
Motor safety switch
FC2.1
Control fuse
FC2.2
Control fuse LR / oil sump heater
SF1
Control voltage O/I
QA2
Performance contactor part winding I
QA3
Performance contactor part winding II
KF3
Collective malfunction alarm contactor
KF4
²
Electronic trigger unit INT69 EX2
KF5
Time relay for time delayed connect of the second part winding
FA1
AC-double barrier (compression temperature)
BT3¹
Pump down- pressostat/ thermostat or external enabling switch
BP1/BP2¹ High/low pressure monitoring in accordance with the relevant national regulations
X SS
Terminal strip in the external switch cabinet
X KK
Terminal strip in the supplemental terminal box with recognised protection type
Optional
KF1
Time delay relay (on delay) max. 90 sec. (bypass time at start)
KF2
Time delay relay (drop-off delay) max. 90 sec. (function begins when the
oil pressure / monitoring is reached during operation)
BP5¹
Oil differential pressure sensor (Kriwan)
EB1
Oil sump heater (ATEX design)
FA2
Switching repeater (oil pressure control)
FB1
Fault protection switch (release current 30 mA)
0LR
Capacity regulator (ATEX design)
¹) Operate these components with the appropriate type of protection only
²
) Regard deviating connection voltage!
When using 24 V DC the installation of a safety isolating transformer is mandatory.
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!
