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‐
tected
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
OSSD2 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
cables
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
