Pilz PSENcode Catalog

Basics

Description

PSENcode

1.1

PSENcode1.12007-03BasicsDescriptionPSENcodePSEN

Operation of the safety switch

PSENcode safety switches act in con­junction with a coded actuator in non­contact operation (transponder). Each
safety switch has an actuator (trans­ponder). Together with an authorised
evaluation device they form an ap­proved, complete solution.

Two microcontrollers evaluate the in­put circuits and switch the outputs ac­cordingly. The microcontrollers
monitor each other.

If the correct actuator (transponder) is
in the response range, signal output
Y32 will switch on. If the input circuits
are also closed, safety contacts 12
and 22 conduct and the "Input" LED il­luminates yellow.
If the actuator is not within the re­sponse range (open safety gate) or the
input circuits are not closed, safety
contacts 12 and 22 and signal output
Y32 are blocked.
If the shutdown occurs via the inputs,
reactivation of the outputs is only pos­sible after both safety inputs are
locked simultaneously (partial opera­tion lock).

procedure at the safety switch
(max. 8 additional learning pro­cedures).

` Safety switch with ATEX approval

for use in potentially explosive at­mospheres.

Directions of actuation

PSENcode safety switches have 5 dif­ferent sensing faces:

1.1-6

Protection against defeat

Safety switches from the PSEN range
are designed to guarantee security
against manipulation through protec­tion against defeat in accordance with
VDE 0660.

Selection criteria

` Coding

– Coded actuator: Safety switch

only accepts PILZ actuators

– Fully coded actuator (unique

code): The actuator has a unique
electronic coding. The safety
switch only reacts to a single ac­tuator.

– Fully coded actuator (unique

code, teachable): The actuator
has a unique electronic coding.
The safety switch only reacts to
a single actuator. New actuators
can be taught in via a learning

2007-03Pilz GmbH & Co. KG, Sichere Automation, Felix-Wankel-Straße 2, 73760 Ostfildern, Germany

Telephone: [phone], Telefax: [phone], E-Mail: [e-mail]

Basics

Description

PSENcode

Operating distance

A high lateral and vertical offset can be
achieved with long operating distanc­es. This will provide greater tolerances
for installation and even less sensitivy
towards spring-back or swinging from
safety gates.

Operating distances:

` Assured operating distance s

This is the distance from the sens­ing face, within which the presence

:

ao

of the specified target is correctly
detected under all specified envi­ronmental conditions, manufactur­ing tolerances and internal
component faults.

` Typical operating distance s

This is the distance from the sens­ing face, within which the presence
of the specified target is typically
detected correctly.

` Release distance S

This is the distance from the sens­ing face, beyond which the absence

active area

:

r

s

ar

s

ao

s

omin

Assured
operating distance

of the specified target is correctly
detected under all specified envi­ronmental conditions and manufac­turing tolerances.

` Assured release distance S

o

This is the distance from the sens­ing face, beyond which the absence
of the specified target is correctly
detected under all specified envi­ronmental conditions, manufactur­ing tolerances and internal
component faults.

On
Off

Assured release
distance

:

ar

1.1

If you install safety switches and actu­ators in the vicinity of electrically or
magnetically conductive material,
check the operating distances, as
changes can be expected.

Example 1: Concealed installation with
4 mm aluminium, visual contact be­tween actuator and safety switch

Example 2: Installation with actuator
on a 4 mm aluminium bracket and the
safety switch flush on to aluminium

Hysteresis:

The assured release distance is longer
than the assured operating distance

> sao). The safety switches there-

(s

ar

fore have a hysteresis. If the actuator
is within s
not cause the safety switch to de-en­ergise.

vibrations up to sar will

ao,

Lateral and vertical offset:

The operating distances stated in the
technical datails only apply if the ac­tive areas of the sensing face and ac­tuator are installed opposite each
other in parallel. Operating distances
may deviate if other arrangements are
used. The maximum permitted lateral
and vertical offset will depend on the
safety switch you are using (see chap­ter entitled “Unit-specific Descrip­tions”, section on“Max. lateral and
vertical offset in mm”).

Pilz GmbH & Co. KG, Sichere Automation, Felix-Wankel-Straße 2, 73760 Ostfildern, Germany
Telephone: [phone], Telefax: [phone], E-Mail: [e-mail]

2007-03

1.1-7

Basics

Description

PSENcode

1.1

Lateral offset Height offset

active area

Actuator's direction of movement

The sensing face of the actuator is
permitted to move in parallel to the

sensing face on the safety switch.
Movements in which the actuator is

Operating distance

s

ar

s

ao

s

omin

Assured
operating distance

tilted in relation to the safety switch are
not permitted.

On
Off

Assured release
distance

1.1-8

Pass-by speed

If the safety switch is being used as a
position switch, the maximum permit­ted pass-by speed of the actuator is
important. This must be defined so
that the evaluation device can detect
the status of the safety switch. This
value is device-specific.

Evaluation devices

Each safety switch has an approved
evaluation device and possibly also an
interface.

INFORMATION

For details of which evaluation device
is approved for which safety switch,
please refer to the chapter entitled

Telephone: [phone], Telefax: [phone], E-Mail: [e-mail]

“Wiring and Commissioning” or to the
details in the chapter entitled “Unit­specific Descriptions”.

Connecting safety switches in se­ries

Several safety switches are connected
in series to an input on an evaluation
device via a junction. This means, for
example, that several safety gates on a
plant can be monitored using a single
evaluation device.
Up to 10 safety switches can be con­nected in series (can be used for appli­cations up to Category 4 in
accordance with EN 954-1).
The switch status of the individual
safety switches (safety gate open or
closed) is displayed through LEDs and

can be evaluated via the auxiliary out­put, e.g. with a PLC.

Housing material

The housing of the PSENcode safety
switch is made from silicone-free PBT
plastic, which is insensitive to dirt. For
details of the chemical resistance of
the housing material, please refer to
the table in the chapter entitled
“Chemical resistance”.

2007-03Pilz GmbH & Co. KG, Sichere Automation, Felix-Wankel-Straße 2, 73760 Ostfildern, Germany