S748-772 Instructions Manual | 12 Appendix
P P-controller Control loop with purely proportional behavior
Phase shift Compensation for the lag between the electromagnetic
and magnetic fields in the motor
PI-controller Control loop with proportional and differential behavior
Position controller Regulates the difference between the position setpoint
and the actual position to 0
Output: speed setpoint
Potential isolation electrically decoupled, electrical isolation
Power contactor System protection device with phase monitoring
Pulse power of the brake circuit Maximum power which can be dissipated in the brake cir-
cuit
R Reset New start of the microprocessor
Resolver to Digital converter Conversion of the analog resolver signals into digital
information
Reversing mode Operation with a periodic change of direction
Ring core Ferrite rings for interference suppression
ROD-interface Incremental position output
S Servo amplifier Control device for regulating the speed, torque and pos-
ition of a servomotor
Setpoint ramps Limits for the rate of change of the speed setpoint
Short-circuit here: electrically conductive connection between
two phases
Speed controller Regulates the difference between the speed setpoint and
the actual value to 0
Output : current setpoint
SSI-interface Cyclically absolute, serial position output
Supply filter Device to divert interference on the power supply
cables to PE
Tachometer voltage Voltage proportional to the actual speed
Thermal control Temperature-sensitive device built into the motor wind-
ing (usually PTC)
Tn, I-integration time Integral component of a control loop
Z Zero pulse Output once per turn from incremental encoder, used to
zero the machine
158 Kollmorgen | kdn.kollmorgen.com | July 2019
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