Input Signals Channel 1; Signal Tracks; Encoder Breakage Recognition Channel 1 - KEB COMBIVERT f5 Betriebsanleitung

Encoder Interface Resolver / HTL Input
3.2.2

Input signals channel 1

3.2.2.1

Signal tracks

A sine-wave voltage is output at terminals REF_HI and REF_LO at the resolver interface.
This voltage supplies the field winding in the resolver. This signal is transmitted via a rotary
transformer to the rotary part of the resolver.
The pulsating magnetic field induces electrical voltages in the two signal windings which are
shifted about 90°. The voltages pulsate with the same frequency and phase position as the
field signal. However their amplitudes are depending on the position of the rotor winding.
The induced voltage has maximum value if rotor and measuring winding are parallel. No
voltage is induced in signal winding in right angle to each other. Both signal voltages are
directly transferred to the encoder interface.
Figure 3.2.2.1
7,2Vpp ±2 %
3,6Vpp ±10 %
3,6Vpp ±10 %
3.2.2.2

Encoder breakage recognition channel 1

Input signals SIN_HI and COS_HI are monitored for the monitoring of the resolver at chan-
nel 1. The monitoring for channel 1 will be switched on/off with parameter Ec.42 (in the past
Ec.20).
The recognition of encoder breakage triggers an „error! encoder 1"(value 32), if the voltage
at signal inputs SIN_HI and COS_HI is outside of the specification.
GB-8
Field and signal tracks
REF_HI
REF_LO
SIN_HI
SIN_LO
COS_HI
COS_LO