102
O P E R A T I N G I N S T R U C T I O N S | safeRS3
8027489/2022-03-01 | SICK
Subject to change without notice
9 TECHNICAL REFERENCES
9.2
Terminal blocks and connector pin-outs
9.2.1
Digital inputs and outputs terminal block
1
2
3
4
5
6
7
8
9
10
11
12
-
1
2
3
4
-
V-
1
2
3
4
V+
Note
: facing the control so that the terminal block is on the top left, number 12 is the
closest to the control corner.
Terminal
block
Symbol
Description
Pin
Digital In
4
Input 2, Channel 2, 24 V DC type 3 - INPUT #2-2
1
3
Input 2, Channel 1, 24 V DC type 3 - INPUT #2-1
2
2
Input 1, Channel 2, 24 V DC type 3 - INPUT #1-2
3
1
Input 1, Channel 1, 24 V DC type 3 - INPUT #1-1
4
V+
V+ (SNS), 24 V DC for diagnostics of the digital inputs
(mandatory if at least one input is used)
5
V-
V- (SNS), common reference for all digital inputs (mandatory if at
least one input is used)
6
Digital Out
-
GND, common reference for all digital outputs
7
4
Output 4 (OSSD4)
8
3
Output 3 (OSSD3)
9
2
Output 2 (OSSD2)
10
1
Output 1 (OSSD1)
11
-
GND, common reference for all digital outputs
12
Note
: the cables used must have a maximum length of 30 m (98.4 ft) and the maximum
operating temperature must be at least 80 °C.
Note
: use only copper wires with a minimum gauge of 18 AWG and a torque of 0.62 Nm
(5,5 lbs in).
9.2.2
Voltage and current limits for digital inputs
The digital inputs (input voltage 24 V DC) adhere to the following voltage and current
limits, in accordance with standard IEC/EN 61131-2:2003.
Type 3
Voltage limits
0
from - 3 to 11 V
1
from 11 to 30 V
Current limits
0
15 mA
1
from 2 to 15 mA