Temperature Monitoring - Infeed Transformer; Fan Failure With Redundant Fans - Siemens SINAMICS PERFECT HARMONY GH180 Reference Manual

Result
The test is passed if the appropriate message is displayed on the test station computer and the
inverter is inhibited.
3.2.20 Temperature monitoring – infeed transformer
Fundamentals
The temperature monitoring of the infeed transformer is checked.
Test procedure
1. The drive is switched on.
2. The signal cable for "Alarm" is interrupted.
3. The signal cable for "Fault" is interrupted.
4. The drive is switched off if the fault announcement is uninterrupted for 60 s.
Result
The test is passed if the appropriate messages are displayed on the test station computer.
3.2.21

Fan failure with redundant fans

Fundamentals
Depending on the version, the cabinet and/or each cabinet unit (transformer unit, cell unit) is
equipped with one or two fans and a redundant fan.
A check is made that when one of the fan fails, the redundant fan is switched on. In order to
maintain drive operation, at least one fan per cabinet unit must be active.
Test procedure
1. The drive is switched on.
2. The fan power supply of a cabinet unit is interrupted.
SINAMICS PERFECT HARMONY GH180 6SR41 F03 F04 F06 F14 F28 F48 F68 F72 F79 G21 K20 K21 K29 L29 L50 L55 L81 L82 L95 M61
N30 N35 N44 N75 M08 U10 Y15
Reference Manual Rev.201902141441 GH180
The drive remains switched on. The following message is displayed on the test station
computer.
"Xformer OT Alarm" (= alarm, transformer overtemperature)
The drive remains switched on. The following message is displayed on the test station
computer.
"Xformer OT Trip Alarm" (= fault announcement, transformer overtemperature)
The following messages are displayed on the test station computer:
"Xformer OT Trip" (= fault transformer overtemperature)
"SOP issued MV input trip" (= drive switches off the supply)
The redundant fan switches on. A fan failure message is displayed on the test station
computer.
Tests
3.2 Function test
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