Siemens SINUMERIK 840C Installation Instructions Manual page 492

08.96
1008
Default value
0.0
With this machine data, a phase error compensation is performed. On unconditioned signal
encoders (e.g. ERN 1387), phase errors can occur between the A and B tracks. These can be
noticed by a rougher speed actual value, i.e. the actual value has twice the encoder marking
frequency imposed on it if a fault occurs. Especially in the case of geared encoders, the phase
errors can assume magnitude that have an effect on the control quality. (Acoustic)
Note:
This machine data is switched active with bit 1 of the machine data Configuration act. val.
acquisition (MD 1011).
1011
Configuration act. val. acquisition, motor measuring system
Default value
0000
Input of the configuration for actual value functions related to the SIMODRIVE System 611D.
Value table:
Bit 0 Adaptation of direction of rotation
gear encoder is fitted
Bit 1 Phase error compensation
Bit 2 Reserved
Bit 3 Incremental encoder
Absolute encoder with Endat
interface
Bit 4 Rotary measuring system
Linear measuring system
Bit 5 Motor measuring system for AM
operation
Bit 6 Absolute track via electr. rev.
Absolute track via mec. rev.
Bit 8 Linear scale has several zero marks:
One is selected by the NC
Bit 12 Identify rough position
Bit 13 Identify fine position
Bits 14-15 Transmission rate EnDat encoder
©
Siemens AG 1992 All Rights Reserved
SINUMERIK 840C (IA)
Encoder phase error compensation
Lower input limit Upper input limit
- 20.0
Lower input limit Upper input limit
0000
6FC5197- AA50
7 Drive Machine Data (SIMODRIVE Drive MD)
7.3.2 Drive MD (data description)
20.0 Degrees
FFFF Hex
0=Positive direction of rotation of
motor (clockwise)
1=Negative direction of rotation of
motor (counterclockwise)
0=not active
1=active
=0
=1
=0
=1
=0 available
=1 not available
=1 (e.g. Hall-type pulse generator)
=0 (e.g. ERN 1387)
=1
=1
=1
00= 100 kHz
01= 500 kHz
10= 10 kHz
11= 2 kHz
Active
at once
Units
Active on
Power On
Units
7–77