ECODRIVE03-SGP-03VRS Description of Diagnostic Messages F… and E… 4-33
DOK-ECODR3-SGP-03VRS**-WA01-EN-P
E255 Feedrate-override S-0-0108 = 0
With the parameter S-0-0108, Feedrate override, the travel velocity of all
drive-controlled travel commands can be changed proportionally (in %). If
the value of this parameter is 0, the travel velocity is also 0. With velocity
= 0, the motor remains stationary despite having a commanded value.
Cause:
1. The parameter S-0-0108, Feedrate override is 0.
2. For devices with analog inputs: Feedrate override via analog input is
activated, and the voltage at the analog input is 0.
3. The feed potentiometer of the connected control system is at 0 or is
being evaluated incorrectly.
Remedies for:
1. Set Feedrate override > 0, so that the drive moves. Full speed is
attained with 100 %.
2. Apply a voltage > 0 proportional to the desired speed, +10 V
corresponds to 100 % (full) speed. Alternative: De-activate Feedrate
override.
3. Turn the feed potentiometer cautiously, check the analog signal and
the evaluation for it.
See also the functional description: "Drive-Controlled Homing".
E256 Torque limit = 0
Cause:
1. For protection against mechanical overload, the maximum torque
can be limited by the S-0-0092, Bipolar Torque Limit parameter. If
the actual value of this parameter is equal to 0, the motor does not
develop torque and does not follow the given command values.
2. Torque reduction is set via an analog channel, and the applied
voltage amounts to 10 V.
Remedy for:
1. Set the torque limit to a value greater than 0.
2. Establish an analog voltage smaller than 10 V.
See also the functional description: "Current Limit"
E257 Continuous current limit active
The thermal controller work load is monitored. If a command current
profile is demanded from the drive controller and this profile is too high a
load for the power transistors in the long run (too high temperature rise of
the power output stage), the drive reacts by dynamically reducing the
effective peak current. While doing this, this warning is output. The
parameter P-0-4046, Active peak current is reduced. Before this real
peak current limitation occurs, the pre-warning E261 Continuous current
limit pre-warning should have been generated.
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