7
7.3 List of faults and warnings
7-685
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SIMODRIVE 611 universal Description of Functions (FBU) – 04.05 Edition
759 Encoder/motor types do not match
Cause A linear motor was selected, and no linear scale configured (P1027.4 =
0).
A rotating motor was selected and a linear scale configured (P1027.4 =
1).
A resolver has been selected the pole pair number (P1018) of which is
illegal. A pole pair number =1 or the pole pair number of the motor
(P1112) is admissible.
The maximum speed (P1146) cannot be measured with the resolver.
The required resolution ( 1011[2]=1 or 1030[2]=1, resolver evaluation )
cannot be set using this module.
For this setting, either 6SN1118–*NK01–0AA0 or
6SN1118–*NJ01–0AA0 is required.
Remedy – Parameterize the encoder type corresponding to the type of motor
and the control module.
– Use the required (6SN1118–*NK01–0AA0 or 6SN1118–*NJ01–0AA0 )
control module.
Acknowledgement POWER ON
Stop response STOP II (SRM, SLM) STOP I (ARM)
760 Pole pair width/scale graduations cannot be repre-
sented internally
Cause For linear motors, the equivalent (internal) pole pair number and (inter-
nal) encoder pulse number are calculated from the pole pair width and
grid division. In this case, the encoder pulse number must be an integer
multiple of one or x pole pair widths. This error message is output if the
pole pair width/grid division * x (up to x=4096) is not an integer multiple
or if an internal encoder pulse number which was calculated is too high.
A result with a tolerance of +/– 0.001 absolute is interpreted to be an
integer.
Remedy Long travel paths:
A linear measuring system with an encoder mark number that is an in-
tegral divisor of x* pole pair widths should be used.
Short travel paths:
For short travel, only a low error can accumulate which has hardly any
effect on the maximum achievable force and on the temperature rise, if
the encoder pulse number fits with a deviation of more than +/–0.001 in
the pole pair width. We then recommend that the pole pair width is
slightly changed.
Acknowledgement POWER ON
Stop response STOP II (SRM, SLM) STOP I (ARM)
7 Fault Handling/Diagnostics
04.05
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