Datasheet

Relays for functional safety
Safety relays PNOZsigma
PNOZ s30
Pilz GmbH & Co. KG, Felix-Wankel-Straße 2, 73760 Ostfildern, Germany
Telephone: [phone], Telefax: [phone], E-Mail: [e-mail]
2016-09
817
Direction
If the direction is to be detected safely, this function must be linked to a safety contact.
} If "Direct. Right" is configured, the safety output is switched on during normal operation
in clockwise rotation.
} If "Direct. Left" is configured, the safety output is switched on during normal operation in
anti-clockwise rotation.
For both directions, a tolerance can be entered for the wrong direction. In other words, the
drive can run in the wrong direction up to the set tolerance value, without the assigned out-
put switching off.
If an output has been switched off, it cannot switch back on again until the drive has been
run in the right direction up to the tolerance value.
Please note:
} Direction monitoring is always active, irrespective of whether it is used in the selected
parameter set.
} Direct.Right and Direct.Left are active when the PNOZ s30 is started up.
} Direction cannot be detected if proximity switches are used.
Timing diagram for direction monitoring:
UB
Direction
s
Direct.Right
Right
Left
Standstill
Direct.Left
s
s
0 0 0 0...
0 0 0 1 2 3 4 4 ...
1 2 3 4 4 ...
3 2 1 0 0 ...
3 2 1 2 1 0 0 ...
1 2 3 2 3 4 4 ...
1 2 3 3 ... 4 4 ... 4 4 ... 3 2 1 0 0 ...
Wrong
direction:
Wrong
direction:
s
3 2 1 1 1 ...
0 0 ...
0 0 ... 1 2 3 4 4 ...
Configuration in the example:
} Wrong direction in anti-clockwise rotation
Max. right: 3 pulses
} Wrong direction in clockwise rotation
Max. left: 3 pulses