Rockwell Automation 8520-MUM 9/Series CNC Mill Operation and Programming Manual Documentation Set - Manual (Page 911)

Error and System Messages
Appendix B
B-39
Message Description
SERVO AMP C LOOP GAIN ERROR One of the following AMP parameter errors exist::
Current Prop. Gain + Current Integral Gain < 4096
or
Current Prop. Gain - Current Integral Gain > 0.
SERVO AMP ERROR There is an error in one or more of the AMP parameters relative to servo control or an absolute
feedback encoder failed to initialize.
SERVO AMP FDBK PORT ERROR The feedback port assignments in AMP are wrong; for example, two servos are using the same
feedback port on the same servo module.
SERVO AMP FE LIMITS CORRECT One or more of the following AMP parameters were changed to satisfy the following equation:
Inposition Band • Gain Break Point • Feedrate Suppression • Excess Error
The servo module would have disabled control operation if these parameters were not changed.
SERVO AMP ID SPEED CORRECT One or more of the following AMP parameters were changed to satisfy the following equation:
o/ < Motor speed at starting Id < Motor speed at Id Break Point < Max. Motor Speed
The servo module would have disabled control operation if these parameters were not changed.
SERVO AMP OUTPUT PORT ERROR The output ports as assigned in AMP are wrong; for example, two servos on the same board are
assigned to the same output port.
SERVO AMP V LOOP GAIN ERROR One of the following AMP parameter errors exist:
Velocity Prop. Gain + Velocity Integral Gain < 65536
or
Velocity Prop. Gain -- Velocity Integral Gain > 0
SERVO AMP, AMP TYPE ERROR The AMP parameters specifying amplifier types and connectors are contradictory.
SERVO AMPLIFIER FAULT This indicates that a fault signal has been received from a servo amplifier. It can usually be
corrected by turning off power to the amplifier, and then back on.
SERVO BUSY DURING HOMING OPERATION This error indicates that the servo processor was unable to respond during a homing operation.
It can occur under the unusual condition resulting from two or more servo axes reaching their
home point simultaneously. Generally, the axes can be re-homed with no problems.
SERVO CONFIGURATION ERROR The AMP servo configuration is inconsistent. An example of this error would be if the
downloaded AMP file were configured for only two axes, when the AMP parameter “Number of
Motors on First Board”was set for three.
SERVO COMMUNICATIONS ERROR A communications error occurred between the control and the servo module.
SERVO CURRENT LOOP ERROR While running an axis, the allowable current loop proportional error or current loop integral error
has gone out of range.
SERVO INTERFACE FAILURE The servo interface diagnostics performed on power-up have failed. Attempt to power up again.
If the error remains, contact Allen-Bradley customer support services.
SERVO POS & VEL FB SIGN ERR This is a power turn-on error which occurs when the signs of the position and velocity feedback
devices do not match when a common feedback port is used for both.
SERVO POWER UP SEQUENCE ERROR The servo processor diagnostics performed on power-up have failed. Attempt to power up
again. If the error remains, contact Allen-Bradley customer support services.
SERVO POWERUP DIAGNOSTICS FAILURE The servo module diagnostics performed on power-up have failed. Possible causes include
incorrect servo AMP parameters being downloaded. An example would be configuring AMP for
five axes when there is only one servo module installed.
SERVO PROCESSOR ASSIGNMENT ERROR Too many servos were AMPed or a servo was assigned to a non-existent servo processor. The
system is held in E-Stop. The message indicates an error in the total number of fitted axes and
spindles, or in the AMPed values of:
Number of Motors on 1st board
Number of Motors on 2nd board.