Standard functions
SIMOCODE pro
GWA 4NEB 631 6050-22 DS 03
10-9
Cold starting
If the motor feeder is in the test position, its main circuit is isolated from the
network. However, the control voltage is connected.
The "Cold starting" function test is carried out in this state. Cold starting
means the motor feeder is tested without a current in the main circuit.
To differentiate this function from normal operation, it must be enabled via
the socket on the function block.
Feedback stating that the motor feeder is isolated from the mains voltage
on the main current side can occur, for example, via an auxiliary contact of
the main switch in the motor feeder that is connected to any device input
(terminal). This is then internally connected to the "Test position feedback
(TPF) - Input" plug of the function block. When using current/voltage
measuring modules, this type of auxiliary contact is entirely unnecessary.
The "TPF" function block can be activated by monitoring for undervoltage
("Voltage Monitoring" function block).
Thereafter, the contactor outputs can be set via the control stations (see
Chapter 4.1 "Control stations"), enabling the current-free status to be tested.
If current flows erroneously during test operation, the contactor outputs are
switched off by
"Trip - Test position feedback".
"Trip - Test position feedback (TPF)" fault message and acknowledgement
Notice
"Trip - Test position feedback (TPF)" will be generated if:
• "TPF" is activated, although current is flowing in the motor feeder
• "TPF" is activated and current is flowing in the motor feeder.
Acknowledge with "Reset".
Settings
Test position
feedback (TPF)
Description
Input Activate the "Test Position Feedback (TPF)" function block with any
signal (any sockets ,
e. g. device input)
Type Specification of the input logic
• NO contact (1-active)
• NC contact (0-active)
Table 10-5: Test position feedback (TPF) settings
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