7
EN
SLC 430
Operating instructions
Safety light curtain
4. Electrical connection
UND
ODER
COM
MAX. 1,6A
MAX. 4A
MAX. 4A
MAX. 4A
L1
L1
L2
L1
L2
*)
*)
VDE 0551
18-21 VAC
22-30 VDC
VDE 0551
MAX. 42 VDC/VAC
15-48 VDC
15-30 VAC
1
2
3
4
5
6
7
1
2
1
2
B
A
Sch
.
B
A
Sch
.
Power supply
Output 1
Signalling output
Output 2
Sensor E
Sensor R
Hold function Test input
*) Spark suppression
OR
AND
Spark suppressors are imperatively required in case of
inductive loads! They must be switched parallel to the
inductance. A circuit parallel to the output contact is not
permissible! When diodes are used as spark suppressors,
switch-off will be delayed.
Approximate values for spark suppressors
Operating voltage
R
C
110 up to 230 V
220 Ω
0.22 µF
24 up to 48 V
100 Ω
2.2 µF
R
C
Operating
voltage
Output
contact
Consumer,
contactor
To avoid contact overload, the output circuits (output 1 / out-
put 2) are individually fused. The maximum current-carrying
capacity is 4 A, 250 VAC. Both safety outputs must not be
wired in series! They must be wired 2-channel to the machi-
ne control. In addition to both main outputs output 1 / output
2, a signalling output is available. This is a potential-free
switching output, which can be switched as power-to-lock
either as power-to-unlock contact. In this way, the signalling
output is used for the logical query of the protection field
status. The current-carrying capacity is 4 A / 42 V.
4.1 Standard operation (protective mode) with contactor control
*
*
*
K1
K1
H
N
K1
K1
K2
K2
K2
K2
Safety monitoring module
Test input
Output 1
Output 2
Machine switch-off
circuit
* RC member for alterna-
ting-current voltage supply
When the test input is wired, the restart time is approx. 1.5
s after enabling of the protection field.
4.2 Restart interlock (manual reset) (hold function) with contac-
tor control
*
*
*
K1
H
N
K1
K1
K2
K2
K2
Safety monitoring module
Input hold
function
Output 1
Output 2
Machine switch-off
circuit
* RC member for alterna-
ting-current voltage supply
The downstream realys K1 and K2 must have positive-action
contacts.
