Installation manual
Page 100 of204
5.12 Configuration of measuring distances
5.12.1 General description of encoder configuration
The most important input variables for the monitoring functions of the module are safe position,
speed and acceleration. These are obtained by dual-channel generation from the connected
sensor system. A category 4 compliant architecture, i.e. continuous dual-channel recording with
high degree of diagnostic coverage, is required for Pl e acc. to EN 13849-1. For possible single-
channel components (e.g. mechanical connection of the sensors/encoders with only one
shaft/fastening) fault exclusions acc. to EN ISO 13849-2 may be used, if this should be
necessary. For Pl d acc. to EN 13849-1 one may work with a reduced degree or diagnostic
coverage. Simple design sensor systems (speed monitoring only) may under certain
circumstances be sufficient under due consideration of the permissible fault exclusions acc. to
EN ISO 13849-2.
See also APPENDIX 1
Further configuration is described in the programming manual:
37350-820-01-xxF-PSCBR Programierhandbuch.pdf
5.12.2 Sensor type
Absolute encoder and incremental measuring systems are possible, as well as counting pulse
generating proximity switches
5.12.2.1
Absolute encoder:
Data interface:
Serial Synchronous Interface ( SSI ) with variable data length from 12 to 28
bit.
Data format:
Binary or Gray code,
Physical Layer:
RS-422 compatible
SSI-Master operation:
Clock rate:
150kHz
SSI-Listener operation (slave mode):
Max. external clock rate 200 KHz
1)
or 350 kHz
2)
.
Min. clock pause time 30 µsec
Max. clock pause time 1 msec
Diagnoses:
Diagnose
Parameters
Fault threshold
Supply voltage monitoring
Fixed values
5 V, 8V, 10V, 12V, 20V, 24V
+/- 20 % +/-2 %(measuring
tolerance)
Monitoring of differential level
on input
Fixed value RS 485-level
+/- 20 % +/-2 %(measuring
tolerance)
Monitoring of Clk-frequency
Fixed value
100 kHz < f < 350 kHz
Plausibility of speed versus
position
Fixed value
DP < 2 * V * T with
T = 8 ms
Summary of Contents for PSCBR-C-10 Series
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