WEG CPW17 User manual

Emergency Stop Control
Control de Parada de Emergencia
Controle de Parada de Emergência
CPW17
User's Manual
Manual del Usuario
Manual do Usuário
Motors I Automation I Energy I Transmission & Distribution I Coatings

User's Manual
Series: CPW17
Language: English
Document: 10007588965 / 00
Publishing Date: 10/2020

Summary of Reviews
The information below describes the reviews made in this manual.
Version Review Description
-R00 First edition

Summary
1 SAFETY INSTRUCTIONS .......................................................................... 4
1.1 APPLICABLE STANDARDS ................................................................................................................4
2 GENERAL INFORMATION......................................................................... 5
2.1 FEATURES ...........................................................................................................................................5
2.2 FUNCTIONS ........................................................................................................................................6
2.3 APPLICATIONS ...................................................................................................................................7
2.4 TERMS AND DEFINITIONS................................................................................................................9
3 INSTALLATION AND CONNECTION ...................................................... 11
3.1 CONNECTIONS................................................................................................................................. 11
3.2 MOUNTING .......................................................................................................................................12
4 TECHNICAL SPECIFICATIONS............................................................... 13
5 DIMENSIONS ........................................................................................... 14
6 MAINTENANCE........................................................................................ 15
7 DECLARATION OF CONFORMITY......................................................... 16
7.1 APPROVALS.......................................................................................................................................16

Safety Instructions
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1 SAFETY INSTRUCTIONS
The alert symbols shown below indicates potential hazard, risk or recommendation. If not follow the alerts may
cause dangerous situations to user or process.
DANGER!
Failure to comply with safety regulations can result in death, serious injury and / or serious damage.
Installation and commissioning of the device must be performed only by qualified and authorized
personnel.
The electrical connection of the device can only be made with the device isolated.
ATTENTION!
The general concept of the control system in which the device is incorporated must be validated by
the user.
The electrical connection of the device must comply with the instructions contained in this user
manual; otherwise, there is a risk that the safety function will be lost.
It is not allowed open the device, adulterate it or ignore security devices.
NOTE!
Observe regulations of the country when transporting, installing and disposing of the device.
All relevant safety rules and standards must be observed.
1.1 APPLICABLE STANDARDS
CPW17 complies with the following european directives and international standards:
Table 1.1: Applicable standards
European Directives
2006 / 42 / EC Machinery directive
2011 / 65 / EU + 2015 / 863 RoHS directive
International Standards
EN ISO 13849-1: 2015 Safety of machinery – safety-related parts of control systems
IEC 62061: 2005
+ AC:2010 + A1: 2013 + A2: 2015
Safety of machinery – functional safety of safety-related electrical, electronic and programmable
electronic control systems
IEC 60947-5-1: 2003 + A1: 2009
Low-voltage switchgear and control gear
Control circuit devices and switching elements
Electromechanical control circuit devices
IEC 61508 Parts 1-7: 2010 Functional safety of electrical / electronic / programmable electronic safety-related systems
EN IEC 63000: 2018 Technical documentation for the assessment of electrical and electronic products with respect
to the restriction of hazardous substances

General Information
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2 GENERAL INFORMATION
For machines and systems that can produce a risk for people when in operation, the EU Machinery directive
defines minimum requirements that are intended to reduce to a minimum the specific hazards and the related
risks of accident.
If all sources of danger cannot be eliminated by design measures, appropriate protective measures must be taken,
to prevent people entering the danger area.
The emergency stop safety relay CPW17 is designed for safety-related system and comply the requirements of
IEC 62061 and can be used up to safety category 4 – PL e according to EN ISO 13849-1.
The CPW17 are designed to execute safety-related functions as part of a process or machine. It is the responsibility
of the manufacturer of process or machine to ensure the correct functionality and safety functions of the entire
process or machine.
The CPW17 is a safety relay suitable to following safe guarding applications:
Mechanical safety switches with and without guard locking.
Non-contact safety switches.
Emergency stop switchgear.
Electro-sensitive protective equipment, etc.
2.1 FEATURES
The CPW17 has the following main features:
Compact case – 17.5 mm [0.688] in.
2 relay outputs, safe and redundant.
Single and dual-channel operation possible.
Manual or automatic start.
Cyclic monitoring of the output contacts.
Comply up to category 4, PL e, SIL 3, SIL CL3.
Connection of:
Emergency button.
Safety switch.
Non-contact safety switch.
OSSD-outputs devices.
Light curtains.
Initialization available in 2 behaviors:
Monitored manual start.
Automatic start.
Relay status indication by front view.

General Information
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NOTE!
Observe regulations of the country when transporting, installing and disposing of the device.
All relevant safety rules and standards must be observed.
2.2 FUNCTIONS
The CPW17 is powered (A1 / A2) with extra-low voltage (SELV / PELV). The internal logical system closes the safety
contacts when the monitored safety inputs is closed and start button (S3) is pressed.
When the monitored safety inputs is opened (S1 / S2), the output contacts (13-14 / 23-24), forced guided, are opened
and safely shutdown the machine. It is ensured that a single fault does not lead to the loss of the safety function
and that every fault is detected by self-monitoring in a cyclical manner, ensuring detection after re-energization.
A1 A2 S0 S1 S2 13 23
S3 14 24
+
-
POWER
START
LOGIC
K1
K2
Figure 2.1: Block diagram
SINGLE-CHANNEL SAFETY CIRCUIT
A single positively driven contact in the safety component is connected to the relay. This type of connection is
suitable for categories 1 or 2 according EN ISO 13849-1.
DUAL-CHANNEL SAFETY CIRCUIT
Two contacts of which at least one is a positively driven contact are connected to the relay. This type of connection
is suitable for categories 3 or 4 according EN ISO 13849-1.
RELAY START CONTROL
After the relay has switched off, the relay must be re-started, with manual or automatic start:
Manual start: The relay is started by actuating a button. Before the safety inputs must be re-established.
Automatic start: The relay switches on automatically as soon as the safety inputs changes back to the safe state.
ATTENTION!
The renewed starting of the machine can only occurs automatically if it is ensured that there can be
no dangerous state.

General Information
CPW17 | 7
English
2.3 APPLICATIONS
Depending on the application or the result of the risk assessment according standard ISO 13849-1 and the safety
level achieve according IEC 61508, the CPW17 must be wired according examples shown below:
Suitable Electro-Sensitive Protective Equipment Safety Level
Light curtains
OSSD-outputs
devices
E
OSSD 2
S2
~ ~
24 V+ -
S0 S3 13
A1 A2 14
K1 K2
24
23S1
OSSD 1
K1 *
L
N
K2 *
R
Light
curtain
Manual start
Automatic
start
EN ISO 13849-1
PL e
CAT 4
IEC 61508 1-7
SIL 3
IEC 62061
SIL CL3
Dual-channel input device, OSSD type, with manual start (for automatic start: jumper S1 / S3).
ATTENTION!
The same ground reference connection must be used for all system components.
To applications with mechanical or electromechanical safety switches with or without contact does
not recommended use dual-channel inputs with two PNP inputs.
Suitable
Mechanical Safety Switches with/without Guard Locking
Non-Contact Safety Switches
Emergency Stop Switchgear
Safety Level
Emergency
buttons
Safety switches
Grid sensors
S2
~ ~
24 V+ -
S0 S3 13
A1 A2 14
K1 K2
24
23S1
K1 *
L
N
K2 *
Emergency
stop Manual start
Automatic
start
EN ISO 13849-1
PL d
CAT 3
IEC 61508 1-7
SIL 2
IEC 62061
SIL CL2
Dual-channel input device, type mechanical or electromechanical contact, with manual start (for automatic start: jumper S1 / S3).

General Information
8 | CPW17
English
Suitable
Mechanical Safety Switches with/without Guard Locking
Non-Contact Safety Switches
Emergency Stop Switchgear
Safety Level
Emergency
buttons
Safety switches
Grid sensors
S2
~ ~
24 V+ -
S0 S3 13
A1 A2 14
K1 K2
24
23S1
K1 *
L
N
K2 *
Emergency
stop Manual start
Automatic
start
EN ISO 13849-1
PL c
CAT 1
IEC 61508 1-7
SIL 1
IEC 62061
SIL CL1
Single-channel input device, type mechanical or electromechanical contact, with manual start (for automatic start: jumper S1 / S3).
*Optional feedback loop to monitor contactors or the expansion modules.
Configuration Manual Automatic
Start
S1 S0 S3
S1 S0 S3
Feedback
S1 S0 S3
K1
K2
S1 S0 S3
K1 K2
ATTENTION!
If set as automatic start, the safety contacts switch immediately after device powered.
If set as manual start, not must be possible to reach the restart command button from inside the
danger area.
NOTE!
Additional data can be requested from the manufacturer for applications that deviate from these
conditions.
DIAGNOSTIC
To assure the system diagnostic is reached its necessary perform a manually test proof, reached when safety
relay reach the safe state (switch off). According applications the following test proof intervals must be ensured.
Diagnostic
Standard CAT PL Test Interval
EN ISO 13849-1 4 e Once month
3 d Once year

General Information
CPW17 | 9
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2.4 TERMS AND DEFINITIONS
CPW17
Emergency Stop Safety Relay from WEG Company.
PLMP
Standard screw fixing adapter from WEG Company.
CAT
Category: Classification of the safety-related parts of a control system in respect of their resistance to faults and
their subsequent behavior in the fault condition, and which is achieved by the structural arrangement of the parts,
fault detection and/or by their reliability.
[EN ISO 13849-1:2015]
PL
Performance Level: Discrete level used to specify the ability of safety-related parts of control systems to perform
a safety function under foreseeable conditions.
[EN ISO 13849-1:2015]
SIL
Safety Integrity Level: Discrete level for specifying the safety integrity requirements of the safety functions, where
safety integrity level 4 has the highest level of safety integrity and safety integrity level 1 has the lowest.
[IEC 61508:2010]
PFD
Probability of Dangerous Failure Demand: Safety unavailability of safety-related system to perform the specified
safety function when a demand occurs from the control system.
[IEC 61508:2010]
SFF
Safe Failure Fraction: Property of a safety related element that is defined by the ratio of the average failure rates
of safe plus dangerous detected failures and safe plus dangerous failures.
[IEC 61508:2010]
SIL CL
SIL Claim Limit: Maximum SIL that can be claimed for a safety related electrical control system in relation to
architectural constraints and systematic safety integrity.
[IEC 62061:2005]
PFHd
Probability of dangerous Failure per Hour: Average probability of dangerous failure within 1 h.
[IEC 62061:2005]

General Information
10 | CPW17
English
MTTFd
Mean Time To dangerous Failure: Expectation of the mean time to failure. Normally expressed as an average of
expectation of the time to failure.
[EN ISO 13849-1:2015 and IEC 62061:2005]
OSSD
Output Signal Switching Device: Output switching element, verified by inspections or tests, independently and
continuously, able to detect the following foreseeable faults when in ON-state:
Short circuit of the output to supply voltage.
Short circuit of the output to ground.
Short circuit between outputs.
Overload.
[IEC 61496-1:2012]
SELV / PELV
Safety Extra-Low Voltage / Protective Extra-Low Voltage: Eletric system in wich the voltage cannot exceed the value
of extra-low voltage, protecting against eletric shock under normal operation and under single fault conditions,
including earth faults in order electric circuits.
[IEC 61140:2016]

Installation and Connection
CPW17 | 11
English
3 INSTALLATION AND CONNECTION
3.1 CONNECTIONS
Table 3.1: Connection descriptions
Description Type Pin Function Front View
Power supply
IN A1 AC / DC Positive [+]
IN A2 AC / DC Negative [-]
Controlled voltage OUT S0 Positive reference [+]
Digital inputs
IN S1
Dual Channel PNP Input
IN S2
IN S3 PNP Start Control
Relay outputs OUT 13-14
23-24
Output Current paths 2
NO contacts
CONNECTION INSTRUCTIONS
The electrical connection of the safety relay for other devices is carried out by fixed terminals with screws. To
ensure the electrical connections integrity the following connection instructions must be considered:
Table 3.2: Electrical connection instructions
Parameter Value
Cable section 24 to 12 AWG
0.5 to 2.5 mm²
Cable resistance ≤ 40 Ω
Cable length of control line ≤ 100 m
Connection type Screw terminals
Tool Screwdriver slot Nº3
Torque ≤ 0.4 N.m.
ATTENTION!
Ensure that safety relay is turned off before perform the electrical connections. Do not use the safety
relay like supply to external devices.

Installation and Connection
12 | CPW17
English
3.2 MOUNTING
The CPW17 can be installed on a 35 mm DIN rail or fixed with screws using the PLMP option. The rear of the
housing has two adjustable latches, one at each end. When closed, they fix the device to the 35 mm DIN rail.
When open, they provide two holes for fixing with screws.
Fixing on 35 mm DIN Rail
1º Open the latches.
2º Put on rail.
3º Close the latches.
Fixing on Optional PLMP
1º Open the latches.
2º Insert the screws.
3º Screw on, lock.
Figure 3.1: Mounting

Technical Specifications
CPW17 | 13
English
4 TECHNICAL SPECIFICATIONS
Table 4.1: CPW17 technical specifications
Electrical
Operating voltage – SELV / PELV + 24 V DC / AC ± 20 %
Reverse polarity protection Yes
Frequency operation 50 / 60 Hz
Power consumption ≤ 3 VA
Response time ≤ 10 ms
Controlled voltage at S0 AC 26 to 36 V DC
DC 20 to 30 V DC
Switching current, at 24 V DC S1 30 mA
S2 30 mA
Logic of inputs S1 PNP
S2 PNP
Working temperature -10 to +55 °C [+ 14 to + 131 ºF]
Storage temperature -40 to +70 °C [- 40 to + 158 ºF]
Output switching Force guided relays
Safety contacts 2 NO contacts (redundant)
Switching capability DC13 24 V DC @ 3 A
AC15 250 V AC @ 3 A
Feedback Yes
Led indicators 2, relay status K1 and K2
Mechanical
Housing material Polyamide PA6
Dimensions 90 x 64 x 17.5 mm [3.54 x 2.51 x 0.68 in]
Weight ± 0.095 Kg
Connection type Screw terminals
Connection terminals EUA 24 to 12 AWG
SI 0.5 to 2.5 mm²
Ambient temperature -10 to +55 °C [+ 14 to + 131 ºF]
Degree of protection IP 20
Degree of contamination 2
Mounting DIN rail 35 mm or PLMP
Lifecycle Electrical 2 E6
Mechanical 1 E7
Time life 20 Years
Safety
EN ISO 13849-1 CAT 4
PL e
IEC 61508 1-7
SIL 3
PFD 1 E-5 AVG
SFF 98.67 %
IEC 62061
SIL CL 3
PFHd 1 E-9 1/h
MTTFd > 100 years

Dimensions
14 | CPW17
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5 DIMENSIONS
17,5 [ 0.6 8 9 ]
90 [3.543]
90,55 [3.762]
64 [2.52]
60 [2.362]
96,4 [3.795]
Ø 3,1
[0.122]
Figure 5.1: Dimensions in millimeters [inches]

Maintenance
CPW17 | 15
English
6 MAINTENANCE
If the safety relay does not operates according necessary applications, check the possible faults listed below
before send device to maintenance.
DEVICE DOES NOT SWITCH ON
Check the wiring connections and comparing with wiring diagram applications.
Check the operating voltage at A1 / A2.
Check the safety switch used for correct function and adjustment.
Check whether the emergency stop circuit is closed.
Check whether the start button (with manual start) is closed.
Check if the feedback loop is closed.
DEVICE CAN NOT BE SWITCHED ON AGAIN AFTER AN EMERGENCY STOP
Check whether the emergency stop circuit was closed again.
Check if the start button or the emergency stop circuit (with manual start) opened before closing again.
Check if the feedback loop opened before closing again.
If these steps do not remedy the fault either, return the device to the manufacture for examination.
ATTENTION!
Opening the device is impermissible and will void the warranty.

Declaration of Conformity and Approvals
16 | CPW17
English
7 DECLARATION OF CONFORMITY
7.1 APPROVALS
Functional
Safety
Type
Approved
www.tuv.com
ID 0600000000

Manual del Usuario
Serie: CPW17
Idioma: Español
Documento: 10007588965 / 00
Fecha de Publicación: 10/2020

Sumario de Revisiones
La información abajo describe las revisiones ocurridas en este manual.
Versión Revisión Descripción
-R00 Primera edición

Sumario
1 INSTRUCCIONES DE SEGURIDAD........................................................20
1.1 NORMAS APLICABLES ....................................................................................................................20
2 INFORMACIONES GENERALES............................................................. 21
2.1 CARACTERÍSTICAS..........................................................................................................................21
2.2 FUNCIONES .....................................................................................................................................22
2.3 APLICACIONES.................................................................................................................................23
2.4 TÉRMINOS Y DEFINICIONES..........................................................................................................25
3 INSTALACION Y CONEXIÓN .................................................................. 27
3.1 CONEXIONES ...................................................................................................................................27
3.2 MONTAJE..........................................................................................................................................28
4 ESPECIFICACIONES TÉCNICAS ............................................................ 29
5 DIMENSIONES......................................................................................... 30
6 MANTENIMIENTO.................................................................................... 31
7 DECLARACIÓN DE CONFORMIDAD ..................................................... 32
7.1 APROBACIONES ..............................................................................................................................32