PZE X4VP4
Operating Manual PZE X4VP4
1003205-EN-08
8
Function description
The contact expansion module PZE X4VP4 is an add-on device with selectable delay-on
de-energisation, and it is used to expand a safety circuit. The contact expansion module is
driven by a base unit (e. g. emergency stop relay).
}
Functional procedure once the input circuit is closed (e.g. safety contacts on the base
unit are closed):
–
The supply voltage is present at input (A1) of the contact expansion module.
–
The safety contacts 17-18, 27-28, 37-38 and 47-48 close.
–
The LEDs "CH.1" and "CH.2" are lit.
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Functional procedure once the input circuit is opened (e.g. safety contacts on the base
unit are opened):
–
The supply voltage is not present at input (A1) of the contact expansion module.
–
The LEDs "CH.1" and "CH.2" go out.
–
Safety contacts 17-18, 27-28, 37-38 and 47-48 are opened redundantly once the
delay time has elapsed.
NOTICE
At the latest the safety contacts open after the set delay time t
v
+ 50% of the
set value, even in the case of a component failure.
Installation
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The unit should be installed in a control cabinet with a protection type of at least IP54.
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Use the notch on the rear of the unit to attach it to a DIN rail.
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Ensure the unit is mounted securely on a vertical DIN rail (35 mm) by using a fixing ele-
ment (e.g. retaining bracket or an end angle).
Wiring
Please note:
}
Information given in the "
}
Outputs 17-18, 27-28, 37-38 and 47-48 are delay-on de-energisation safety contacts.
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To prevent contact welding, a fuse should be connected before the output contacts (see
).
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Calculation of the max. cable runs l
max
in the input circuit:
R
lmax
R
l
/ km
I
max
=
R
lmax
= max. overall cable resistance (see
R
l
/ km = cable resistance/km
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Use copper wire that can withstand 60/75 °C.
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Sufficient fuse protection must be provided on all output contacts with capacitive and in-
ductive loads.
