Pilz PNOZ X6 Data Sheet
E-STOP relays, safety gate monitors
Up to Category 3, EN 954-1
PNOZ X6
Safety relay for monitoring E-STOP
pushbuttons and safety gates.
Approvals
PNOZ X6
Unit features
` Positive-guided relay outputs:
– 3 safety contacts (N/O), instanta-
neous
` Connection options for:
– E-STOP pushbutton
– Safety gate limit switch
– Reset button
` LED indicator for:
– Switch status channel 1/2
– Supply voltage
` Suitable to be driven via a semicon-
ductor output
` See order reference for unit types
` Simultaneity monitoring, selectable
Unit description
The safety relay meets the requirements of EN 60204-1 and IEC 602041 and may be used in applications with
` E-STOP pushbuttons
` Safety gates
Safety features
` The circuit is redundant with built-in
self-monitoring.
` The safety function remains effecti-
ve in the case of a component failure.
` The correct opening and closing of
the safety function relays is tested
automatically in each on-off cycle.
` The tranformer is short circuit-
proof. An electronic fuse is used on
a DC supply.
Block diagram
The relay conforms to the following
safety criteria:
A1 A2 S23 S24
~
S11 S12
InputInput
=
Power
Power
Reset/
Start
Y1 Y2
UB AC
Reset/
Start
Y3 Y4
13 23 33
K1
K2
K3
14 24 34
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-2-047-01/05
E-STOP relays, safety gate monitors
Up to Category 3, EN 954-1
PNOZ X6
Function description
` Single-channel operation: no red-
undancy in the input circuit, earth
faults in the reset and input circuit
are detected.
` Dual-channel operation without de-
tection of shorts across contacts:
redundant input circuit, detects
– earth faults in the reset and input
Timing diagram
1 2
POWER
Reset/Start
Input
Output safe
t1 t2
t1 t2
Key
` Power: Supply voltage
` Reset/start: Reset circuit Y1-Y2,
Y3-Y4
` Input: Input circuits S11-S12, S23-
S24
` Output safe: Safety contacts 13-14,
23-24, 33-34
circuit,
– short circuits in the input circuit
and, with a monitored reset, in
the reset circuit too.
` Automatic start: Unit is active once
the input circuit has been closed.
` Manual reset: Unit is active once
the input circuit is closed and then
the reset circuit is closed.
` M on it or ed re se t: Un i t i s ac ti ve on c e
ab
t1
t1
t2
t2
` c: Automatic reset
` d: Manual reset
` e: Monitored reset
` a: Input circuit closes before reset
circuit
` b: Reset circuit closes before input
circuit
– the input circuit is closed and
then the reset circuit is closed
and opened again.
– the reset circuit is closed and
then opened again once the input circuit is closed.
` Increase in the number of available
contacts by connecting contact expander modules or external contactors/relays.
ab
t1
: Switch-on delay
` t
1
: Delay-on de-energisation
` t
2
3
t2
t2
t1
Wiring
Please note:
` Information given in the “Technical
details” must be followed.
` Outputs 13-14, 23-24, 33-34 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
= 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-2-047-01/05Pilz GmbH & Co. KG, Sichere Automation, Felix-Wankel-Straße 2, 73760 Ostfildern, Germany
-2
E-STOP relays, safety gate monitors
Up to Category 3, EN 954-1
PNOZ X6
Preparing for operation
` Supply voltage
Supply voltage AC DC
A1
A2
L1
N
PE
` Input circuit
Input circuit Single-channel Dual-channel
E-STOP
without detection of shorts across
contacts
S11
S12
S24
S1
Safety gate
without detection of shorts across
contacts
S11
S12
S24
S1
` Reset circuit
S11
S12
S24
S23
A1
A2
S11
S23
S24
S12
S1
L+
L-
S1
S2
Reset circuit E-STOP wiring, safety gate Safety gate (dual-channel)
Automatic reset
Y1
Manual reset
Monitored reset
Y2
S3
Y1
Y2
S3
Y1
Y2
Y3
Y1
Y2
S2S1
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-2-047-01/05
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