HEIDENHAIN MANUALPLUS 620 Technical Manual

January 2012 6.17 Monitoring Functions 965
6.17.8 I
2
t monitoring
The parameter objects CfgServoMotor and CfgPowerStage are not required
for:
 Virtual axes (MP_axisMode = Virtual)
 Axes that are for display only (MP_axisMode = Display)
 Analog axes (MP_axisHw = Analog)
General
Information
HEIDENHAIN inverter systems feature individual I
2
t monitors, one for each
power module and motor.
Function An I
2
t monitor calculates and supervises the temperature pattern in a thermal
motor or power-stage model during operation, even if temperature
measurement is also provided by the hardware.
The basis for calculation are the active current, the rated or stall current,
(multiplied by MP_motFactorI2t for motors and by MP_ampFactorI2t for
power modules) and a device-specific temperature model. A first-order
temperature module is available for monitoring power modules, first and
second-order modules are available for motors. These models make it
possible to permanently calculate the temperature of the stator winding in the
motor or the semiconductor in the power module.
Settings in the configuration editor MP number
Axes
ParameterSets
[Key name of the parameter set]
CfgServoMotor
motFactorI2t
CfgPowerStage
ampFactorI2t
401304
401208

HEIDENHAIN MANUALPLUS 620 Specifications

General

Brand	HEIDENHAIN
Model	MANUALPLUS 620
Category	Control Systems
Language	English