ECODRIVE03-SGP-03VRS Description of Diagnostic Messages F… and E… 4-31
DOK-ECODR3-SGP-03VRS**-WA01-EN-P
E250 Drive overtemp. prewarning
The temperature of the heatsink in the drive controller has reached the
maximum permissible temperature. The drive controller follows the
command value input for a period of 30 seconds. This makes it possible
to bring the axis to a standstill with the control system while keeping true
to the process (for example, close the operation, leave the collision area,
etc.).
After 30 seconds, the response set in parameter P-0-0119, Best
possible deceleration will be performed by the drive controller.
Cause:
1. Failure of the drive’s internal blower.
2. Failure of the control cabinet’s climate control.
3. Incorrect control cabinet sizing in regards to heat dissipation.
Remedy for:
1. If the blower fails, exchange the drive controller.
2. Install climate control feature in the cabinet.
3. Check the sizing of the control cabinet.
See also the functional description:"Current Limit"
E251 Motor overtemp. prewarning
As soon as the temperature warning threshold (145°C) is exceeded, the
warning E251 is output, and the drive keeps on following the command
value.
This state can last for a long time without powering down. Only when the
temperature error threshold is exceeded, an immediate powering down
will take place.
See also F219 Motor Overtemperature Shutdown.
Cause:
The motor is overloaded. The effective torque required from the motor
was above the allowable standstill continuous torque for too long.
Remedy:
Check the installation of the motor. For systems which have been in use
for a long time, check to see if the drive conditions have changed (in
regards to pollution, friction, moving components, etc).
See also the functional description: "Temperature Monitoring".
E252 Braking resistor overload prewarning
Cause:
The braking resistance (bleeder) in the amplifier is charged with the
reflected energy from the motor by about 90%. The bleeder
overtemperature warning shows that an overload of the bleeder is
expected if the feedback energy increases on and on.
Remedy:
Reduce the acceleration value or velocity. Check the drive installation.
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