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8. Technical references
8.1.9 Bottom screws
specifications
The bottom screws can be:
cheese head
l
button head
l
Note: Avoid using countersunk head screws.
8.2 Terminal blocks and
connector pin-outs
8.2.1 Digital inputs and outputs
terminal block
Note: facing the control unit so that the terminal
block is on the top left, number 12 is the closest to
the control unit corner.
82
SBV System Series | Instruction manual v1.2 DEC 2021 | SAF-UM-SBVBus-en-v1.2 | © 2021 Inxpect SpA
Terminal
Symbol
block
Digital In
4
Input 2, Channel 2, 24
V dc type 3 - INPUT
#2-2
3
Input 2, Channel 1, 24
V dc type 3 - INPUT
#2-1
2
Input 1, Channel 2, 24
V dc type 3 - INPUT
#1-2
1
Input 1, Channel 1, 24
V dc type 3 - INPUT
#1-1
V+
V+ (SNS), 24 V dc for
diagnostics of the
digital inputs
(mandatory if at least
one input is used)
V-
V- (SNS), common
reference for all digital
inputs (mandatory if at
least one input is
used)
Digital
-
GND, common
Out
reference for all digital
outputs
4
Output 4 (OSSD4)
3
Output 3 (OSSD3)
2
Output 2 (OSSD2)
1
Output 1 (OSSD1)
-
GND, common
reference for all digital
outputs
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).
8.2.2 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.
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
Description
Pin
1
2
3
4
5
6
7
8
9
10
11
12
Type 3
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