Advertisement
Breaker Trip Procedure
Failure to follow this
warning could result in
personal injury or death.
WAIT TWO (2) MINUTES
after disconnecting power prior
to touching electrical
components as they may hold
a dangerous charge
of 400VDC, then verify DC
Voltage is less than 42 VDC
at inverter test points
labeled +VDC and -VDC before
servicing board.
Y es
·
Verify Wiring
·
Check Breaker
·
Check breaker size
·
Replace breaker if necessary
Weak Breaker
or Drive Fault
(99% chance drive)
34
WARNING
400 VOLTS
ELECTRICAL
HAZARD
Y es
+VDC
-VDC
Disconnect OD fan
and close breaker
Disconnect AC
Y es
Input from drive
Trip?
and close breaker
Trip?
No
Reconnect drive
without fan
Y es
No
Trip?
Fan Motor or
Y es
Connection Failure
Breaker Trip Procedure
·
Verify wiring
·
Verify sensor readings
·
Check breaker
·
Check breaker size
·
Check for GFCI on circuit
·
Replace breaker if necessary
Immediate trip as
soon as breaker is
closed?
No
Run Drive
Diagnostic Test
Trip?
Y es
Weak Breaker or
Drive Fault
No
No
Fan Motor or
Connections or
Breaker
C onnect F an
Replace Breaker
Trip?
Drive Test:
No
Passed?
Go to Drive
Diagnostic Test
Test Response 6:
Flow Chart
No Fault Found
Run OD Fan Test*
Y es
Trip?
No
Run System at
100%
Y es
Trip?
No
Investigate system issue
or weak breaker
4TWL9048A-SF-1C-EN
No
Advertisement
