Mannesmann ecodrive03, Руководство по устранению неисправностей

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3-32 Description of diagnostic letters F... and E... ECODRIVE03 SMT-02VRS
DOK-ECODR3-SMT-02VRS**-WA01-EN-P
E259 Command velocity limit active
In the position control and velocity control operating modes, the effective
velocity command value is limited to the value in parameter S-0-0091,
Bipolar velocity limit value. The warning is given if the resulting velocity
command value reaches this limit.
Cause:
Parameter S-0-0091, Bipolar velocity limit value was set too low.
Remedy:
In normal operating conditions, set parameter S-0-0091, Bipolar
velocity limit value to a value 10% greater than the NC maximum
velocity.
See also the functional description: "Limiting to Bipolar Velocity Limit
Value".
E260 Command Current limit active
The warning shows that the speed controller is entering its limit. This
means that the acceleration capacity of the drive has been exceeded. In
position control mode this means that there is an ever-increasing
deviation between command and actual values (lag error).
Remedy:
•
In position control, reduce parametrized accel value or speed value so
that the drive can follow the position command value.
•
Increase torque limit value, if necessary.
E261 Continuous current limit prewarning
Digital drives are monitored by a continually operating temperature
model. If the thermal load reaches 100%, the continuous current limit will
be activated shortly thereafter and error E257 Continuous Current Limit
Active, is displayed.
Before the torque is reduced, a continuous current limit early warning is
given via a switching threshold, which is determined by parameter
P-0-0127, Overload warning.
To deactivate the warning, enter P-0-0127 = 100% into the parameter.
Cause:
The drive controller was overloaded.
Remedy:
1. Check the drive layout.
2. Reduce acceleration.
3. Increase the switching threshold in parameter
P-0-0127, Overload warning
4. With systems which have been used for longer periods of time,
check to see if drive controller conditions have changed
in regards to:
- Friction
- Movements of the load
- Feed during processing.
See also the functional description: "Current Limit"