Electrical installation
BEKOMAT® 32U
19
Terminal assignment supply voltage (operating voltage)
X 1
X 2
X 3
Power supply
• X 1.1 L/+
• X 1.2 N/-
L = Outer conductor
N = Neutral conductor
L/+
N/-
NO
CO
NC
IN1
GND
pha
se
neutral
norm
ally o
pe
n
comm
on
norm
ally
closed
ex
ternal tes
t (IN1)
GND
1.1
1.2
2.1
2.2
2.3
3.1
3.2
Terminal assignment low voltage (operating voltage)
X 1
X 2
X 3
Power supply
• X 1.1 L/+
• X 1.2 N/-
L/+
N/-
NO
CO
NC
IN1
GND
power
power
norm
ally o
pe
n
comm
on
norm
ally
closed
ex
ternal tes
t (IN1)
GND
1.1
1.2
2.1
2.2
2.3
3.1
3.2
Terminal assignment of the potential-free contact and of the external test
X 1
X 2
X 3
Fault indication/potential-free contact:
• X 2.1 n.o.
• X 2.2 com.
• X 2.3 n.c.
n.c. - com. closed in the event of malfunction or power failure
n.o. - com. closed during normal operation
(closed current principle)
The contacts X2.1 - 2.3 are potential-free.
External test / remote control:
• X 3.1 external test (IN1)
• X 3.2 GND
Contacts connected = test active = discharge
Contacts open = test inactive
The contacts X 3.1 -3.2 are not potential-free.
L/+
N/-
NO
CO
NC
IN1
GND
power
power
norm
ally o
pe
n
comm
on
norm
ally
closed
ex
ternal tes
t (IN1)
GND
1.1
1.2
2.1
2.2
2.3
3.1
3.2
