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6. Electrical connection
6.1. Connection of mats
The safety mat circuit is con-
nected to the safety module. Each
tactile mat has a 4 wire colour
coded
(2 black, 2 white) cable.
Connect the wires of the tactile
mat as follows.
Connection example AZR 31 or
SRB 301HC:
S13 = White (2)
S14 = White (4)
S23 = Black (1)
S24 = Black (3)
# 1
1
2
3
4
1
3
4
1
S23
S13
# 2
Fig. 9: wiring example of the of the
AZR 31 or SRB 301HC in connecti-
on with multiple tactile mats.
6.2. Connecting multiple
tactile mats
If multiple tactile mats are to be
connected to safeguard larger
areas, a separate junction box for
the electrical connections shall be
used. This junction box should be
elevated off the floor, within reach
of each mat cable and have a mi-
nimum enclosure rating of IP 54.
The tactile mats have to be con-
nected in series according to figu-
re 9.
LED on
# 3
ON
2
3
4
IN A Input S13 – S14 closed
2
IN B Input S23 – S24 closed
S24
S14
OUT The two internal relays are
For wiring examples and more information see mounting and wiring in-
structions of the safety modules AZR 31 R2, AZR 31 T2, SRB 301HC/R or
SRB 301HC/T.
Operating voltage O.K.
connected through, when IN A
and IN B are actuated and
feedback input is closed
(AZR 31 T2, SRB 301HC/T)
or closed and re-openend
(AZR 31 R2, SRB 301HC/R)
Switch off power supply before you connect the safety module.
Never connect under voltage.
6.3. Troubleshooting
Green LEDs show operational
conditions of the safety modules
series AZR/SRB.
LEDs AZR 31 or
SRB 301HC:
ON:
Operating voltage
IN A:
Channel A
IN B:
Channel B
OUT:
Authorized operation
off
Operating voltage
missing or defect in internal
current supply
Input S13 – S14 opened or wire
break
Input S23 – S24 opened or wire
break
One of the two inputs IN A or IN B
is not actuated in a finite period
of time, or feedback input is not
closed (AZR 31 T2, SRB 301HC/T)
or closed and not re-opened
(AZR 31 R2, SRB 301HC/R)
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