Datasheet

Relays for functional safety
Safety relays PNOZsigma
PNOZ s1
Pilz GmbH & Co. KG, Felix-Wankel-Straße 2, 73760 Ostfildern, Germany
Telephone: [phone], Telefax: [phone], E-Mail: [e-mail]
2016-09
550
Timing diagram
[1][1] [2][2]
Start
Legend
} POWER: Supply voltage
} Start: Start circuit
} Input: Input circuits
} Output safe: Safety contacts
} Semi: Semiconductor output
} [1]: Automatic start
} [2]: Manual start
} a: Input circuit closes before start circuit
} b: Start circuit closes before input circuit
} t
1
: Switch-on delay
} t
2
: Delay-on de-energisation
} t
3
: Recovery time
Installation
Install base unit without contact expansion module:
} Ensure that the plug terminator is inserted at the side of the unit.
Connect base unit and PNOZsigma contact expansion module:
} Remove the plug terminator at the side of the base unit and at the contact expansion
module.
} Connect the base unit and the contact expansion module to the supplied connector be-
fore mounting the units to the DIN rail.
Installation in control cabinet
} The safety relay should be installed in a control cabinet with a protection type of at least
IP54.
} Use the notch on the rear of the unit to attach it to a DIN rail (35mm).