Pilz PSWZ X1P User Manual

Safe monitoring relays
Pilz GmbH & Co. KG, Felix-Wankel-Straße 2, 73760 Ostfildern, Germany
Telephone: +49 711 3409-0, Telefax: +49 711 3409-133, E-Mail: pilz.gmbh@pilz.de
Up to PL e of EN ISO 13849-1
PSWZ X1P
NSG-D-2-336-2009-11
Gertebild
][Bildunterschrift_Stillstandswchter
Standstill monitor for safe standstill
monitoring
Approvals
Zulassungen
Unit features
Gertemerkmale
` Positive-guided relay outputs:
– 2 safety contacts (N/O), instanta-
neous
– 1 auxiliary contact (N/C), instan-
taneous
` LED indicator for:
– Supply voltage
– Standstill on channel 1/2
–Switch status
– Fault signal if simultaneity time is
exceeded
` Semiconductor outputs signal:
– Error
–Switch status
` Semiconductor input for reset func-
tion
` Measuring inputs for single or
three-phase motors
` Measuring voltage selectable
` Feedback loop
` Plug-in connection terminals (either
spring-loaded terminal or screw
terminal)
` See order reference for unit types
Unit description
Gertebeschreibung
The unit is used for safe standstill
monitoring. It is designed for use on
` Standstill monitoring functions on
plants with dangerous machine
parts or tools (EN 1088 clause 7.4),
` Safety circuits in accordance with
EN 60204-1 and IEC 60204-1.
Standstill is only detected on power-
free measuring circuits. Residual volt-
ages, induced voltages or drives with-
in the position control will prevent safe
standstill detection!
Safety features
][Sicherheitseigenschaften Stillstand
` Relays K1 and K2 are interlocked in
such a way that the unit cannot be
switched back on in the case of
contact welding or an open circuit.
` The unit monitors the measuring
circuits for open circuit. If an open
circuit occurs between the unit and
the motor or on the motor itself, the
unit immediately switches off.
` The standstill monitor prevents the
plant from being enabled in the fol-
lowing cases
– Power supply failure
– Component failure
– Measuring circuits are open cir-
cuit
– Coil defect/open circuit
Block diagram
Blockschaltbild
PSWZ X1P



SÜDDEUTSCHLAND
A1 A2
=
Power
~
K1
K2
Input
L1
13
23 41
14 24 42
L2 L3
Reset
RESET
Feed-
back
0 V 24 V
Y30 Y31 Y32 Y35Y1 Y2

Pilz PSWZ X1P Specifications

General

Product type	Safety relay
Supply voltage	24 V DC
Safety level	SIL 3, PL e
Connection type	Screw terminals
Rated voltage	24 V DC
Safety category	Category 4
Response time	20 ms
Protection class	IP20

Summary

Standstill Monitoring Functions

Safety Features

Highlights safety features like relay interlocking, open circuit monitoring, and prevention of re-enablement.

Unit Description

Purpose and Application

States the unit's purpose is safe standstill monitoring for plants with dangerous machine parts or tools.

Function Description

Measuring Channels and Voltage Thresholds

Explains the two measuring channels, voltage thresholds (Uon, Uoff), and hysteresis for standstill detection.

Reactivation and Simultaneity

Details reactivation via RESET input and the simultaneity monitoring requirement (tg).

Self-Test and Operating Modes

Describes the unit's self-test procedure, single-channel, and dual-channel operating modes.

Technical Details

Electrical Data Summary

Lists key electrical data including supply voltage, power consumption, frequency range, and output contact ratings.

Utilisation Categories

Specifies utilisation categories (EN 60947-4-1, EN 60947-5-1) for safety and auxiliary contacts.

Safety-Related Characteristic Data

Performance Levels and SIL

Details safety-related characteristics like PL (EN ISO 13849-1), Category (EN 954-1), and SIL (EN IEC 62061).

Timing Specifications