Datasheet

Relays for functional safety
Safety relays PNOZsigma
PNOZ s50
Pilz GmbH & Co. KG, Felix-Wankel-Straße 2, 73760 Ostfildern, Germany
Telephone: [phone], Telefax: [phone], E-Mail: [e-mail]
2016-09
897
Functions
Switching the power circuits on and off (fast shutdown)
The device has two safe dual-pole outputs O1+/O1- (power circuit 1) and O2+/O2-(power
circuit 2), which can be switched using inputs Y10/Y11 (power circuit 1) and Y20/Y21
(power circuit 2):
} Switch-on (brake is ventilated):
– O1+/O1- is switched on when there is a "1" signal (24VDC) at Y10 and Y11.
– O2+/O2- is switched on when there is a "1" signal (24VDC) at Y20 and Y21.
– Partial operation is not time-monitored. An output will not switch until both the cor-
responding inputs are "1".
} Switch-off (brake is applied):
– O1+/O1- is switched off safely when there is a "0" signal (0VDC) at Y10 and/or
Y11.
– O2+/O2- is switched off safely when there is a "0" signal (0VDC) at Y20 and/or
Y21.
Power circuit 1 Y10 Y11 O1+, O1-
1 1 1 Load under current (power circuit 1
switched on)
1 0 0 Load without current (power circuit
1 switched off)
0 1 0
0 0 0
Power circuit 2 Y20 Y21 O2+, O2-
1 1 1 Load under current (power circuit 2
switched on)
1 0 0 Load without current (power circuit
2 switched off)
0 1 0
0 0 0
The power circuits are supplied via the terminals B1/B2 with the voltage U
B1B2
(voltage
range: rated voltage 24 V, 48 VDC).