Installation manual

Danaher Motion Kollmorgen System Operation
SERVOSTAR
®
S and SERVOSTAR
®
CD Series 75
Current Sampling
The current loop receives corrective feedback from the current sampling
circuitry. The current sensors use closed-loop hall sampling techniques in all
units.
The current sample is used by the current loops to regulate the current in each of
the three motor phases. Two phases (A and C) of the current signal are sampled
by the microprocessor at a 16kHz rate. The momentary A phase current and C
phase current can be monitored by examining the IA and IC variables,
respectively. The microprocessor calculates the equivalent absolute current,
which can be monitored as I. This value can be averaged for 2, 4, 8, 16, 32, or
64 samples.