SSD 605C, Product Manual

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Trips and Fault Finding
7-3
605C Frequency Inverter
Trip Message and Meaning Possible Reason for Trip
OP STATION
Operator Station has been disconnected
from Inverter whilst Inverter is running in
local control
Operator Station accidentally disconnected from
Inverter
LOST COMMS
COMMS TIMEOUT parameter set too short
(refer to COMMS CONTROL menu at level 4)
MOTOR TEMP
The motor temperature is too high
Excessive load
Motor voltage rating incorrect
FIXED BOOST and/or AUTO BOOST set too high
Prolonged operation of the motor at low speed
without forced cooling
Check setting of INVERT THERMIST parameter in
TRIPS STATUS menu at level 1.
Break in motor thermistor connection
CURRENT LIMIT
If the current exceeds 180% of stack
rated current for a period of 1 second,
the Inverter will trip. This is caused by
shock loads
Remove the cause of the shock load
SHORT CIRCUIT The output is short circuited
24V FAILURE
The 24V customer output has fallen
below 17V
24V customer output is short circuited
Excessive loading
LOW SPEED I
The motor is drawing too much current
(>100%) at zero output frequency
FIXED BOOST and/or AUTO BOOST set too high
(refer to FLUXING menu at level 4)
PHASE FAIL
An input supply phase is missing Supply phase wire break
Blown supply fuse
Tripped supply circuit breaker
Table 7-1 Trip Messages
Automatic Trip Reset
Using the Operator Station, the Inverter can be configured to automatically attempt to reset a
trip when an attempt is made to start driving the motor, or after a preset time once the trip
condition has occurred. The following function blocks (MMI menus) are used to enable
automatic trip resets.
Auto Restart (Auto-Reset)
Sequencing Logic
Setting Trip Conditions
The following function blocks (MMI menus) are used to set trip conditions:
I/O Trips
I*t Trip
Stall Trip
Trips Status
Viewing Trip Conditions
The following function blocks (MMI menus) can be viewed to investigate trip conditions:
Sequencing Logic
Trips History
Trips Status