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PNOZ s7
Safety relays
Operating Manual-21399-EN-09
This document is the original document.
All rights to this documentation are reserved by Pilz GmbH & Co. KG. Copies may be made for internal purposes. Suggestions and comments for improving this documentation will be gratefully received.
Pilz®, PIT®, PMI®, PNOZ®, Primo®, PSEN®, PSS®, PVIS®, SafetyBUS p®, SafetyEYE®, SafetyNET p®, the spirit of safety® are registered and protected trademarks of Pilz GmbH & Co. KG in some countries.
SD means Secure Digital
PNOZ s7
PNOZ s7 safety relay
The unit meets the requirements of EN 60947-5-1, EN 60204-1 and VDE 0113-1. The contact expansion module is used to increase the number of instantaneous safety contacts available on a base unit. Base units are all safety relays with feedback loop monitoring.
The category that can be achieved in accordance with EN ISO 13849-1 depends on the category of the base unit. The contact expansion module may not exceed this.
For your safety
}Only install and commission the unit if you have read and understood these operating instructions and are familiar with the applicable regulations for health and safety at work and accident prevention.
Ensure VDE and local regulations are met, especially those relating to safety.
}Any guarantee is rendered invalid if the housing is opened or unauthorised modifications are carried out.
Unit features
}Positive-guided relay outputs:
–4 safety contacts (N/O), instantaneous
–1 auxiliary contact (N/C), instantaneous
}Safe separation of safety contacts 13-14, 23-24, 33-34 from all other circuits
}LED for:
–Input status, channel 1
–Input status, channel 2
–Switch status of the safety contacts
–Fault
}Plug-in connection terminals (either spring-loaded terminal or screw terminal)
Safety features
The unit meets the following safety requirements:
}The contact expander module expands an existing circuit. As the output relays are monitored via the base unit's feedback loop, the safety functions on the existing circuit are transferred to the contact expander module.
}The safety function remains effective in the case of a component failure.
}Earth fault in the feedback loop:
Detected, depending on the base unit that is used.
}Earth fault in the input circuit:
The output relays de-energise and the safety contacts open.
Operating Manual PNOZ s7 |
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21399-EN-09 |
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PNOZ s7
Block diagram/terminal configuration
A1 |
A2 |
13 |
23 |
33 |
* |
51 |
43 |
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= |
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Input |
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= |
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K1 |
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Interface base unit |
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Power |
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K2 |
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14 |
24 |
34 |
44 |
52 |
Centre: Front view with cover, right: Front view without cover
*Safe separation in accordance with EN 60947-1, 6 kV
Function description with PNOZsigma base unit:
}Dual-channel operation via PNOZsigma connector without PNOZsigma base unit:
}Single-channel operation: one input circuit affects the output relays
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 expander 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).
}Push the unit upwards or downwards before lifting it from the DIN rail.
Operating Manual PNOZ s7 |
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21399-EN-09 |
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