Signal Indicators; Terminal Connections - ASO Safety Solutions SK 35 Manuel D'utilisation

Safety Controller SK 35
General
The dual channel safety controller SK 35 finds application in the monitoring of safety contact mats
as well as in providing safety of crushing and shearing points by safety contact edges and safety
bumpers (pressure sensitive sensor (PSS)).
To the SK 35 two individual PSS safety circuits can be connected, each of them affects to an indi-
vidual switching output.
The safety controller SK 35 is intended for the use at plants/machines, where the machinery control
system provides an appropriate test signal and verifies the result prior to each dangerous movement.
With this testing, the safety controller meets safety category 2 according to EN 954-1 „Safety-related
parts of control systems".
The quiescent current monitoring of the PSS is possible because of the terminating resistor of the
PSS. When the right target quiescent current flows, the output relay is activated and the switching
contacts are closed. When the PSS is activated or the PSS circuit is interrupted, the relay contacts
open immediately. The state of the PSS and the applied supply voltage are indicated by LEDs.
Both channels are independent from each other. With this each of them react individual to the testing
and operating. The reset contacts Z1, Z2 reset both safety channels.

Signal Indicators

LED Power
Supply Voltage
LED CH1
PSS 1 operated
PSS 1 interrupted
LED CH2
PSS 2 operated
PSS 2 interrupted
LED Testing
Testing active

Terminal Connections

A1, A2
B1, B2
X1, X2
Y1, Y2
13, 14
23, 24
Z1, Z2
T1, T2
14
green
yellow/red
yellow
red
yellow/red
yellow
red
orange
Supply Voltage 230V (115V) AC 50/60Hz
Supply Voltage 24 V AC/DC
Input PSS CH 1
Input PSS CH 2
Output Safety relay CH 1
Output Safety relay CH 2
Manual reset input
Test signal input
B1 B2 A1 A2
Z1 Z2 T1 T2
Power
CH 1
CH 2
Testing
SK 35
X1 X2 Y1 Y2
13 14 23 24