Minimum Typical Maximum
Outputs required on the incremental encoders Push-pull
Pulse frequency 100 kHz
Number of pulses per cm 50
Length of cable (shielded) 10 m
OSSDs
Output signal switching device pair 2 PNP semiconductors, short-circuit pro‐
t
ected
8)
, cross-circuit monitored
Safe status when a fault occurs At least one OSSD is in the OFF state.
Switching voltage HIGH at 250 mA U
V
– 2.7 V U
V
Switching voltage LOW S300 Medium Range 0 V 0 V 3.5 V
Switching voltage LOW S300 Long Range 0 V 0 V 2.0 V
Source switching current
9)
6 mA 0.25 A
Leakage current
10)
250 µA
Load inductance 2.2 H
Load capacity 2.2 µF at
50
Ω
Switching sequence (without switchover) 5 ¹/s
Permissible cable resistance
11)
2.5 Ω
Test pulse width
12)
230 µs 300 µs
Test frequency 120 ms
Power-up delay of the OSSDs from red to green 120 ms
Time offset on switching the OSSDs between
O
SSD2 and OSSD1
2 ms
Configuration and diagnostic interface
Communication protocol RS-232 (proprietary)
Transmission rate 38,400 Baud
Cable length for 38,400 Baud and 0.25 mm²
c
ables
15 m
Galvanic separation No
Output TxD HIGH 5 V 15 V
Output TxD LOW –15 V –5 V
Voltage range RxD –15 V 15 V
Switching threshold RxD LOW –15 V 0.4 V
Switching threshold RxD HIGH 2.4 V 15 V
Short-circuit current at TxD –60 mA 60 mA
Maximum voltage level at RxD –15 V 15 V
Maximum voltage level at TxD –11 V 11 V
Data interface
Communication protocol RS-422 (proprietary)
12 TECHNICAL DATA
126
O P E R A T I N G I N S T R U C T I O N S | S300 8010948/ZA21/2020-06-18 | SICK
Subject to change without notice
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