Pilz PZE 9 Data Sheet
Expander modules
Instantaneous
PZE 9
Contact expander module for increasing the number of available contacts
Approvals
PZE 9
Unit features
` Positive-guided relay outputs:
– 8 safety contacts (N/O), instanta-
neous
– 1 auxiliary contact (N/C), instan-
taneous
` LED indicator for:
– Switch status channel 1/2
– Supply voltage
` 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.
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
UB = 24 V AC/DC UB = 24 V AC/DC
A1 A2
~
B1 B2 13 23 33
~
=
Power
Power
=
A1 A2
U
B
* Galvanic isolation at U
B
AC
K1 U1 K2 U2 Y3 Y4
=
~
= 100 - 240 V AC/DC
Input
K1
K2
Y1
Y2
14 24 34
43
53 63 73 83 91
44
54 64 74 84 92
*
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-2-093-11/04
Expander modules
Instantaneous
PZE 9
Function description ` Single-channel operation: one in-
put circuit affects both output relays
` Dual-channel operation:
Timing diagram
POWER
Input
Output safe
Output aux.
Feedback
t1 t1t2 t2
Key
` Power: Supply voltage
` Input: Input circuits U1, U2, K1, K2,
Y3, Y4
` Output safe: Safety contacts 13-14,
23-24, 33-34, 43-44, 53-54, 63-64,
73-74, 83-84
` Output aux: Auxiliary contacts 91-
92
Wiring
– two redundant input circuits af-
fect one output relay
– Detection of shorts across con-
tacts is also possible
` Feedback: Feedback loop Y1-Y2
: Switch-on delay
` t
1
Please note:
` Information given in the “Technical
details” must be followed.
` Outputs 13-14, 23-24, 33-34, 43-
44, 53-54, 63-64, 73-74, 83-84 are
safety contacts, output 91-92 is an
auxiliary contact (e.g. for display).
` 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
= max. overall cable resi-
R
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-2-093-11/04Pilz GmbH & Co. KG, Sichere Automation, Felix-Wankel-Straße 2, 73760 Ostfildern, Germany
-2
Expander modules
Instantaneous
PZE 9
Preparing for operation
` Supply voltage
Supply voltage AC DC
A1
A2
L1
N
PE
` Input circuit
Input circuit Single-channel Dual-channel
without detection of shorts across
contacts
K1
U1
K2
U2
Y3
Y4
PZE
with detection of shorts across contacts
` Feedback loop
A1
A2
K1
U1
K2
U2
Y3
Y4
K1
U1
K2
U2
Y3
Y4
L+
L-
PZE
PZE
Y1 and Y2 are feedback loop inputs on
the base unit
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
Y1
Y2
Y1
Y2
PZE
NSG-D-2-093-11/04
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