PP-controller Control loop with purely proportional behavior
Phase shift Compensation for the lag between the electromagnetic
and magnetic fields in the motor
PID-controller Control loop with proportional, integral and
differential behavior
PID-T2 Filter time constant for the speed controller output
Position controller Regulates the difference between the position setpoint
and the actual position to 0
Output : speed setpoint
Potential isolation Electrically decoupled
Power contactor System protection device with phase monitoring
Pulse power of the regen circuit Maximum power which can be dissipated in the
regen circuit
RRegen circuit Converts superfluous energy, which is fed back
during braking, into heat in the regen resistor
Reset New start of the microprocessor
Resolver-digital converter Conversion of the analog resolver signals into
digital information
Reversing mode Operationwith a periodic change of direction
Ring core Ferrite rings for interference suppression
ROD-Interface Incremental position output
SServo amplifier Controldevice for regulating the position of a
servomotor
Setpoint ramps Limits for the rate of change of the speed setpoint
Short to ground Electricallyconductive connection between a
phase and PE (protective earth (ground))
Short-circuit here:electrically conductive connection between
two phases
Speed controller Regulatesthe difference between the speed setpoint
and the actual value to 0
Output : current setpoint
SSI-interface Cyclic-absolute, serial position output
Supply filter Deviceto divert interference on the power supply
cables to PE
TT-tacho, tachometer time constant Filter time constant in the speed feedback
of the control loop
Tachometer voltage Voltage proportional to the actual speed
Thermostat Temperature-sensitive switch built into the
motor winding
Tn, I-integration time Integral section of a control loop
ZZero pulse Output once per turn from incremental encoders,
used to zero the machine
116 SERVOSTAR®601...620 Product ManualAppendix 07/2007 Danaher Motion