Pilz PZE X4VP8 Data Sheet
Expander modules
Delayed
PZE X4VP8
Contact expander module for increasing the number of available contacts
Approvals
PZE X4VP8
Unit features
` Positive-guided relay outputs:
– 4 safety contacts (N/O), delay-on
de-energisation
` LED indicator for:
– Switch status channel 1/2
` Plug-in connection terminals (either
cage clamp terminal or screw terminal)
` See order reference for unit types
Unit description
The unit meets the requirements of EN
60204-1 and IEC 60204-1. The contact expander module is used to
increase the number of contacts
available on a base unit. Base units are
all safety relays with feedback loop.
The category that can be achieved in
accordance with EN 954-1 depends
on the category of the base unit. The
contact expander module may not exceed this.
The delay-on de-energisation safety
contacts may only be used up to category 3.
Safety features
The unit meets the following safety requirements:
` The contact expander module ex-
pands 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 effecti-
ve 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.
Block diagram
A1 A2 17 27 37
Y1
=
Input
=
Power
K1
K2
Y2
18 28 38
47
48
Pilz GmbH & Co. KG, Sichere Automation, Felix-Wankel-Straße 2, 73760 Ostfildern, Germany
Telephone: +49 711 3409-0, Telefax: +49 711 3409-133, E-Mail: pilz.gmbh@pilz.de
NSG-D-2-294-01/05
Expander modules
Delayed
PZE X4VP8
Function description ` Single-channel operation: one in-
put circuit affects both output relays
Timing diagram
POWER
Input
Output safe
Feedback
t1 t1t2 t2
Key
` Power: Supply voltage
` Input: Input circuits A1
` Output safe: Safety contacts 17-18,
27-28, 37-38, 47-48
` Feedback: Feedback loop Y1-Y2
` t1: Switch-on delay
: Delay-on de-energisation
` t
2
Wiring
Please note:
` Information given in the “Technical
details” must be followed.
` Outputs 17-18, 27-28, 37-38, 47-48
are delay-on de-energisation safety
contacts.
` To prevent contact welding, a fuse
should be connected before the
output contacts (see technical details).
` Calculation of the max. cable runs
in the input circuit:
l
max
R
lmax
=
I
max
Rl / km
R
= max. overall cable resi-
lmax
stance (see technical details)
/km = cable resistance/km
R
l
` Use copper wire that can withstand
60/75 °C.
` Sufficient fuse protection must be
provided on all output contacts with
capacitive and inductive loads.
Telephone: +49 711 3409-0, Telefax: +49 711 3409-133, E-Mail: pilz.gmbh@pilz.de
NSG-D-2-294-01/05Pilz GmbH & Co. KG, Sichere Automation, Felix-Wankel-Straße 2, 73760 Ostfildern, Germany
-2
Expander modules
Delayed
PZE X4VP8
Preparing for operation
` Supply voltage
Supply voltage AC DC
24 V DC
0 V
` Input circuit
Input circuit Single-channel Dual-channel
Base unit:
24 V DC
PNOZ X safety relay
Driven via safety contacts
Base unit:
PNOZelog safety relay
Driven via semiconductor outputs (24
VDC)
0 V
O1
A1
A2
A1
PZE
A20 V
PZE
L-
` Feedback loop
Feedback loop Automatic reset Monitored reset
Y1, Y2 and Input are inputs on the
base unit; they evaluate the feedback
loop
Y1
Y2
Y1
Y2
PZE
Input
Y1
Y2
A1
A2
PZE
24 V DC
PZE
Pilz GmbH & Co. KG, Sichere Automation, Felix-Wankel-Straße 2, 73760 Ostfildern, Germany
Telephone: +49 711 3409-0, Telefax: +49 711 3409-133, E-Mail: pilz.gmbh@pilz.de
NSG-D-2-294-01/05
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