PZE X4VP4
Operating Manual PZE X4VP4
1003205-EN-08
7
Unit features
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Positive-guided relay outputs:
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4 safety contacts (N/O), delay-on de-energisation
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LED display for:
–
Switch status of the safety contacts
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Connection for feedback loop
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Operation: single-channel
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Selectable delay time
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Plug-in connection terminals (either spring-loaded terminal or screw terminal)
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See order reference for unit types
Safety features
The unit meets the following safety requirements:
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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.
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The safety function remains effective in the case of a component failure.
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Earth fault in the feedback loop:
Detected, depending on the base unit that is used.
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Earth fault in the input circuit:
The output relays de-energise and the safety contacts open.
Block diagram/terminal configuration
4A
2B
3B
1B
4B
1A
2A
3A
Delay
*
*Insulation between the non-marked area and the relay contacts: Basic insulation (over-
voltage category III), Protective separation (overvoltage category II)
