80 Troubleshooting and maintenance Emotron AB 01-3990-11r3
Special conditions
Display Error Description
Zero speed stop Happens when preset frequency <0.1Hz
Fails to start
directly
1. If the VSD is set to external terminal control mode (1-00=1)
and direct start is disabled (2-04=0001), the VSD cannot be
started and will flash STP1 when the operation switch is
turned to ON after applying power (refer to descriptions for 2-
04).
2. Direct start is possible when 2-04=0001.
Keypad emer-
gency stop
1. If the VSD is set to external control mode (1-00=0001) and
Stop key is enabled (1-03=0000), the VSD will stop according
to the setting of 1-05 when the Stop key is pressed. STP2
flashes after stop. Turn the operation switch to OFF and then
ON again to restart the VSD.
2. If the VSD is in communication mode and the Stop key is
enabled (1-03=0000), the VSD will stop in the way set by 1-05
when the Stop key is pressed during operation and then
flashes STP2. The PC has to send a Stop command then a
Run command to the VSD for it to be restarted.
3. The Stop key cannot perform an emergency stop when 1-
03=0001
External emer-
gency stop
1. The VSD will ramp stop and then flash E.S., when it
receives external emergency stop signal via the multifunc-
tional input terminal (refer to descriptions of 5-00~5-06).
2. Please wire the terminal beforehand to 5-00~5-06=29.
External base block
The VSD stops immediately and then flashes b.b., when exter-
nal base block is input through the multifunctional input ter-
minal (refer to descriptions of 5-00~5-06).
Autotuning faults
1. Motor data error resulting in for autotuning failure
2. Stops the VSD during autotuning
PID feedback loss PID feedback loss detection
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General