Pilz PZE X4.1P Data Sheet
Expander modules
Instantaneous
PZE X4.1P with universal power supply
ohne Abbildung
Contact expansion module for increasing the number of available contacts
Approvals
PZE X4.1P with universal power supply
Unit features
` Positive-guided relay outputs:
– 4 safety contacts (N/O), instanta-
neous
` LED indicator for:
– Switch status channel 1/2
– Supply voltage
` Plug-in connection terminals (either
spring-loaded terminal or screw
terminal)
` Suitable to be driven via a semicon-
ductor output
` See order reference for unit types
Unit description
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. Base units are all
safety relays with feedback loop monitoring.
The category that can be achieved in
accordance with EN 954-1 and
EN ISO 13849-1 depends on the category of the base unit. The contact expansion module may not exceed this.
Safety features
The unit meets the following safety requirements:
` The contact expansion 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 expansion module.
` The safety function remains effec-
tive 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
~
Power
=
K1 U K2
Input
K1
K2
Y2
13 23 33Y1
14 24 34
43
44
NSG-D-2-352-2008-12
Expander modules
Instantaneous
PZE X4.1P with universal power supply
Function description
` Single-channel operation: one in-
put circuit affects both output relays
Timing diagram
Output safe
Key
` Power: Supply voltage
` Input: Input circuits K1-U-K2
Wiring
Please note:
` Information given in the “Technical
details” must be followed.
` Outputs 13-14, 23-24, 33-34, 43-44
are 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 resist-
lmax
ance (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.
` Dual-channel operation:
– two redundant input circuits af-
fect one output relay
POWER
Input
Feedback
t1 t1t2 t2
` Output safe: Safety contacts 13-14,
23-24, 33-34, 43-44
` Feedback: Feedback loop Y1-Y2
– Detection of shorts across con-
tacts is also possible
: Switch-on delay
` t
1
` t2: Delay-on de-energisation
NSG-D-2-352-2008-12
-2
Expander modules
Instantaneous
PZE X4.1P with universal power supply
Preparing for operation
` Supply voltage
Supply voltage AC DC
A1
A2
L1
N
PE
` Input circuit
Input circuit Single-channel Dual-channel
Base unit:
PNOZ X safety relay
Driven via safety contacts
K1
U
K2
PZE
` Feedback loop
Y1 and Y2 are inputs on the base unit; they
evaluate the feedback loop
Y1
Y2
Y1
Y2
PZE
A1
A2
L+
L-
PE
K1
U
K2
PZE
NSG-D-2-352-2008-12
Loading...