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PNOZ s7.2
Safety relays
Operating Manual-21866-EN-08
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 s7.2
Safety relay PNOZ s7.2
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.
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
}Connection options for expansion modules
}LED for:
–Input status, channel 1
–Input status, channel 2
–Switch status of the safety contacts
}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.
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PNOZ s7.2
Block diagram/terminal configuration
13 |
23 |
33 |
* |
51 |
43 |
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K1 |
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Interface base unit |
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K2 |
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Interface expansion module |
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14 24 34 44 52
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Centre: Front view with cover, right: Front view without cover
*Safe separation in accordance with EN 60947-1, 6 kV
Function description with PNOZsigma s7.1:
}Dual-channel operation and supply voltage via PNOZsigma connector with PNOZsigma expander modules:
}Dual-channel operation and supply voltage via PNOZsigma connector
Installation
Connect contact expansion module PNOZ s7.2 to PNOZsigma contact expansion modules
}Connect the contact expansion modules using the connector supplied.
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.
}Ensure the unit is mounted securely on a vertical DIN rail (35 mm) by using a fixing element (e.g. retaining bracket or an end angle).
Push the unit upwards or downwards before lifting it from the DIN rail.
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