Datasheet

Relays for functional safety
Safety relays PNOZsigma
PNOZ s9
Pilz GmbH & Co. KG, Felix-Wankel-Straße 2, 73760 Ostfildern, Germany
Telephone: [phone], Telefax: [phone], E-Mail: [e-mail]
2016-09
757
Delay-on energisation
[1] [2] [3] [4]
POWER
Input
Reset
Output safe
Output aux.
Legend
} POWER: Supply voltage
} Input: Input circuit
} Output safe: Safety contacts
} Output aux: Auxiliary contact
} Reset: Feedback loop input
} t
2
: Delay-on de-energisation
} tv: Delay time
} [1]: Normal operating cycle
} [2]: Fault: Input circuit opened too early, before t
v
expired
} [3]: Fault: Feedback loop closed too late after t
v
elapsed
} [4]: Normal operating cycle with supply interruption < 10 ms
Installation
Install contact expansion module without base unit:
} 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 expander
module
} Connect the base unit and the contact expansion module using the connector supplied,
before mounting the units to the DIN rail.
Control cabinet installation
} 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).
} When installed vertically: Secure the unit by using a fixing element (e.g. retaining
bracket or end angle).