ECODRIVE DKC01.1/DKC11.1 Drive Controllers
DOK-ECODRV-ASE-02VRS**-WAR1-EN-P • 07.96 Description of Diagnostic Letters F... and E... 2-13
E254 Drive not Referenced
Description:
If "Absolute Positioning Commands" are selected while in "Command
Controlled Operation" the control drive must be homed. If this is not the
case, an absolute position cannot be reached. The drive rejects this
positioning command and stops. The warning will be given.
Cause:
Absolute positioning command was selected without the drive being
referenced.
Remedy:
1. Reference the drive
2. Select "Relative Positioning Command"
E255 Feedrate-Override(S-0-0108) = 0
Description:
The transversing velocity can be changed while jogging, homing and
while in positioning operation with the "S-0-0108, Feedrate Override"
parameter. Since the drive controller cannot follow command values
which do not move, the warning will be given if the value of this parameter
is 0.
Cause:
1. Feedrate-override is set to zero.
2. The "Feedrate Override Via Analog Output" field is activated
and the voltage there is 0V.
Remedy:
For 1. Set the S-0-0108 parameter on the correct value for the
application.
For 2. Deactivate the field or establish a voltage larger than 0V.
E256 Torque Limit Value = 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
command value which has been entered.
2. Torque reduction is set through an analog channel and the
established current amounts to 10 V.
Remedy:
For 1. Set the torque limit to a value larger than 0.
For 2. Establish the analog voltage so that it is smaller than 10V.
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