SICK RE1 User manual

OPERATING INSTRUCTIONS
RE1, RE2
Safety switches

Described product
RE1, RE2
Manufacturer
SICK AG
Erwin-Sick-Str. 1
79183 Waldkirch
Germany
Legal information
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reserved for SICK AG. Reproduction of this document or parts of this document is
only permissible within the limits of the legal determination of Copyright Law. Any modi‐
fication, abridgment or translation of this document is prohibited without the express
written permission of SICK AG.
The trademarks stated in this document are the property of their respective owner.
© SICK AG. All rights reserved.
Original document
This document is an original document of SICK AG.
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Contents
1 About this document........................................................................ 4
2 On safety............................................................................................. 5
2.1 Qualified safety personnel....................................................................... 5
2.2 Application................................................................................................ 5
2.3 Correct use................................................................................................ 5
2.4 General safety notes and protective measures...................................... 6
3 Function description.......................................................................... 7
3.1 Evaluating the switching signals.............................................................. 7
4 Mounting............................................................................................. 10
5 Electrical installation........................................................................ 12
6 Commissioning.................................................................................. 13
6.1 Tests before the initial commissioning.................................................... 13
6.2 Periodic technical checks......................................................................... 13
6.2.1 Regular examinations.............................................................. 13
6.2.2 Inspection by qualified safety personnel............................... 14
7 Maintenance...................................................................................... 15
8 Disposal.............................................................................................. 16
9 Technical data.................................................................................... 17
9.1 Data sheet................................................................................................. 17
9.2 Dimensional drawings.............................................................................. 18
9.3 Typical response range............................................................................. 20
10 Conformities and certificates.......................................................... 21
10.1 EU declaration of conformity.................................................................... 21
10.2 UK declaration of conformity................................................................... 21
CONTENTS
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1 About this document
These operating instructions are original operating instructions.
These operating instructions only apply to the RE11, RE13, RE15, RE21, RE23, RE27
safety switches with the following information on the product packaging: Operating
Instructions 8022549.
These operating instructions are included with SICK part number 8022549 (all availa‐
ble languages of this document)
1 ABOUT THIS DOCUMENT
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2 On safety
This chapter deals with your own safety and the safety of the equipment operators.
bPlease read this chapter carefully before working with the safety switch or with the
machine protected by the safety switch.
The national/international rules and regulations apply to the installation, commission‐
ing, use and periodic technical inspections of the safety switch, in particular the work
safety regulations and safety rules.
2.1 Qualified safety personnel
The switch must be mounted, installed and commissioned only by qualified safety
personnel. Qualified safety personnel are defined as persons who …
•have undergone the appropriate technical training
and
•who have been instructed by the responsible machine operator in the operation of
the machine and the current valid safety guidelines
and
•who have access to the operating instructions.
2.2 Application
The safety switches of the product families RE1, RE2 (these are: RE11, RE13, RE15,
RE21, RE23, RE27) are magnetically operated, non-contact safety switches. In combi‐
nation with a suitable safety-related evaluation unit, they protect movable guards in the
following way:
•The dangerous state of the machine can only be switched on when the guard is
closed.
•If the guard is opened while the machine is running, a stop command is triggered.
For the control this means:
•Activation commands that result in dangerous states are only allowed to become
effective if the guard is in the protective position.
•Dangerous states must have been terminated before the protective position is left.
Prior to the use of safety switches, a risk assessment must be performed on the
machine.
2.3 Correct use
The safety switch must be used only as defined in section "Application", page 5. The
safety switch must be used only on the machine where it has been mounted, installed
and initialized by qualified safety personnel in accordance with these operating instruc‐
tions.
The product may be used in safety functions.
All warranty claims against SICK AG are forfeited in the case of any other use, or
alterations being made to the safety switch, even as part of its mounting or installation.
Correct use includes also regular inspection of the guard by qualified safety personnel
in accordance with section 6.2.
ON SAFETY 2
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2.4 General safety notes and protective measures
Safety switches provide a protection function for persons. Incorrect installation or
manipulation can result in serious injuries.
DANGER
Safety switches are not allowed to be bypassed, turned away or made ineffective in any
other manner.
2 ON SAFETY
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3 Function description
The safety switch is magnetically coded. Its contacts are operated by the related actua‐
tor (RExx-SK). The safety switches are equipped with contacts:
•REx1: 2 complementary switching contacts in normally open-normally closed com‐
bination (NO/NC)
•REx3: 2 normally open contacts (NO/NO)
•RE15: 2 complementary switching contacts in normally open-normally closed com‐
bination (NO/NC) and 1 normally open contact (NO) as signalling contact
•RE27:
°2 normally open contacts (NO/NO)
°1 normally open contact (NO) with LED integrated into the sensor for indica‐
tion of the output state
The switching signals are sampled by a suitable safety-related evaluation unit, e.g. a
safe programmable logic controller.
3.1 Evaluating the switching signals
On integrating magnetic safety switches into suitable safe evaluation units, the follow‐
ing must be taken into account:
•It is imperative all contact signals are evaluated separately.
•On the detection of a fault related to the safety switch, the safe evaluation unit
must shut down and adopt a locked state.
•Both contacts must change output state, before it can be reset. Compli‐
ance with this sequence must be monitored by the safe evaluation unit
(figure 2figure 5figure 9).
•On the connection of the safety switch to a safe evaluation unit, the input module
should be configured such that the discrepancy time set has no effect on the
shutdown time for the evaluation (typical configuration “provide 0”). If this is not
possible, the calculation must take into account the response time.
RE11, RE21
4
3
2
1
Figure 1: Pin assignment RE11, RE21
With male con‐
nector
With connecting cable Function Unactivated
1/2 Brown/white Normally open (NO) Open
3/4 Blue/black Normally closed (NC) Closed
a b
Input
behavior
Output behavior
Sequence to be monitored
a
b
Figure 2: Switching behavior RE11, RE21 (unactivated)
FUNCTION DESCRIPTION 3
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RE13, RE23
4
3
2
1
Figure 3: Pin assignment RE13
2 1
4
3
Figure 4: Pin assignment RE23
With male con‐
nector
With connecting cable Function Unactivated
1/2 Brown/white Normally open (NO) Open
3/4 Blue/black Normally open (NO) Open
a b
Input
behavior
Output behavior
Sequence to be monitored
a
b
Figure 5: Switching behavior RE13, RE23 (unactivated)
RE15
Figure 6: Aderbelegung RE15
With connecting cable Function Unactivated
Brown/white Normally open (NO) Open
Blue/black Normally closed (NC) Closed
Pink/grey Normally open (NO) AUX Open
a b
Input
behavior
Output behavior
Sequence to be monitored
a
b
Figure 7: Switching behavior RE15 (unactivated)
3 FUNCTION DESCRIPTION
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RE27
1
6
5
4
3
7
2
8
Figure 8: Pin assignment RE27
RE27SA…L
With male con‐
nector
With connecting cable Function Unactivated
7/1 Brown/white Normally open contact
(NO)
Open
4/6 Blue/black Normally open contact
(NO)
Open
5/8 Pink/grey Normally open contact
(NO) AUX with LED
Open(LED off)
RE27SA68LS04
With male con‐
nector
With connecting cable Function Unactivated
3/4 Brown/white Normally open contact
(NO)
Offen
7/8 Blue/black Normally open contact
(NO)
Offen
1/6 Pink/grey Normally open contact
(NO) AUX with LED
Offen (LED aus)
a b
Input
behavior
Output behavior
Sequence to be monitored
a
b
Figure 9: Switching behavior RE27 (unactivated)
FUNCTION DESCRIPTION 3
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4 Mounting
WARNING
Mounting is only allowed to be performed by qualified safety personnel.
NOTICE
Discoloration of the housing due to UV radiation. Avoid mounting locations with direct
sunlight.
bPay attention to EN ISO 14119 on mounting the safety switch and the actuator.
bPay attention to EN ISO 14119 on reducing possible ways of bypassing an inter‐
locking device.
Figure 10: Protection example for bypassing a magnetic safety switch in compliance with EN ISO
14119
bDo not mount safety switches in an environment with interfering magnetic fields.
bNote the possible operating positions.
Direction
of approach
Alignment
mark
RE11, RE13, RE15
RE21, RE32, RE27
Figure 11: Alignment of sensor and actuator
bFit safety switch and actuating element such that they do not touch each other:
minimum distance between the front faces with the guard closed 1mm.
4 MOUNTING
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Stop
Min. 1 mm
Figure 12: Mounting example for safety switch and actuator
bFit an additional stop and guide for the moving part of the protective device
(figure 12).
bMount the actuator on guard so that it cannot be detached (e.g. using safety
screws).
bMount safety switch and actuator on non-ferrous materials to prevent any effect on
the switching distance. If necessary, use spacers.
bTighten self-locking screws to 1.0 Nm.
bDo not use anaerobic adhesive (e.g. Loctite) to lock the screws, as this will attack
the plastic housing.
bMinimum distance between two adjacent magnetic safety switches: 40 mm. On
swivelling doors the actuator is to be fitted to the closing edge.
Min. 40 mm
Figure 13: Mounting example on swivelling doors
MOUNTING 4
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5 Electrical installation
WARNING
An incorrect connection may result in the loss of the safety function!
On the usage of extension cables, the colors of the cores may vary from that shown in
this document.
An incorrect connection may cause the device to malfunction or become damaged.
The electrical connection is only allowed to be made by qualified safety personnel
trained in EMC.
The safe evaluation unit’s inputs and outputs connected to the safety switch must meet
the requirements of EN 61131.
It must be ensured the possible current through the contacts on the switch does not
exceed the specified maximum value.
bOnly use copper wires. In case of use in high ambient temperatures, the tempera‐
ture data for the field cable must not be lower than the ambient temperature.
bThe connecting cables must be protected when laid in order to prevent the risk of
cross-circuits.
5 ELECTRICAL INSTALLATION
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6 Commissioning
6.1 Tests before the initial commissioning
•Mechanical functional check:
– Safety switch and actuating element must not touch when the guard is
closed.
– Minimum distance with guard closed 1 mm
•Electrical functional check:
bClose the guard.
bStart machine.
bOpen the guard.
DANGER
Check whether the machine stops when the guard is opened.
bSwitch off machine.
bOpen the guard.
bStart machine.
DANGER
The machine must not start with a guard open!
6.2 Periodic technical checks
To ensure correct function over the long term, regular checks are necessary. Check that
the protective device functions reliably, particularly …
•after every commissioning process
•every time a component is replaced
•after a prolonged period of downtime
•after any kind of error
Aside from these checks, the reliable functioning of the protective device should be
checked at appropriate intervals as part of the maintenance program. For information
on possible intervals refer to EN ISO 14119.
6.2.1 Regular examinations
Check the safety switch for the following points:
•correct function
•visible signs of tampering
At appropriate intervals, it is also necessary to check:
•the safe mounting of actuators and safety switches
•the sealing of the cable glands on the safety switches
•the placement of the cable connections on the evaluation unit
•the shutdown distances
DANGER
Damaged or worn system components must be replaced.
COMMISSIONING 6
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6.2.2 Inspection by qualified safety personnel
The inspection by qualified safety personnel must be performed regularly as per the
applicable national and international regulations within the intervals defined. This pro‐
cedure ensures that any changes on the machine or manipulations of the guard after
commissioning are detected.
6 COMMISSIONING
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7 Maintenance
bRemove iron filings from the safety switch and actuator at regular intervals.
bOnly use solvent-free cleaning agents to clean the safety switches and actuators.
MAINTENANCE 7
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8 Disposal
Always dispose of serviceableness devices in compliance with local/ national
rules and regulations with respect to waste disposal.
8 DISPOSAL
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9 Technical data
9.1 Data sheet
Table 1: Data sheet
Safety-related parameters
B10d 20 × 106 with low load (EN ISO 13849-1)
PFHD1) 2.5 × 10–8
Type Type4 (EN ISO 14119)
Actuator coding level Low coding level (EN ISO 14119)
Safe state in the event of a fault The switch has no internal fault detection and is unable
to assume a safe state in the event of a fault. Fault
detection is performed by the connected safety-related
logic unit.
TM (mission time) 20 years (EN ISO 13849)
General data
Housing material Vistal®
Enclosure rating IP 67 (IEC 60529)
Function Magnetic
Storage and operating temperature –30 °C … +60 °C
Switching voltage Umax (UL Class2) 30 V DC
Max. switching current2)
RE11, RE21
RE13, RE23, RE15, RE27
400mA
100 mA
Max. switching frequency 30/minute
Output state indication with LED
Switching voltage
Max. switching current
24 V DC
Min. 5 mA … max. 20 mA
Shock resistance 30 g/11 ms
Vibration resistance 10 … 55 Hz, ampl. 1 mm
Mechanical life 1 × 108 switching operations (–20°C … +60°C)
1 × 105 switching operations (–30°C … +60°C)
Mounting orientation Any, note alignment to actuator (mark)
Switching distances see "Typical response range", page 20
Type of connection
RExx-SAC
RExx-SA64
RExx-SA68
RExx-SA84
RExx-SA03 … RExx-SA20
4-pin M8 plug connector (without cable)
Cable 0.2 m with 4-pin M12 male connector
Cable 0.2 m with 8-pin M12 male connector
Cable 0.2 m with 4-pin M8 male connector
Cable with flying leads (3m … 20m)
Cable material PVC
Wire material Copper
Coupling nut material Zinc die cast, nickel plated
Cable diameter 5.8mm
Wire cross-section 0.25mm²
Bend radius (for fixed installation) >12 × cable diameter
TECHNICAL DATA 9
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Bend radius (for flexible use) >15 × cable diameter
1) At low load with a switching frequency of 1 operation/minute, 24 hours/day, 365 days/year, there are
525,600 switching operations per year.
2) For UL Class 2 applications the maximum switching capacity is limited to 5 W.
Table 2: Response range
Type RE11 RE13 RE15 RE21 RE23 RE271)
Type
Internal cir‐
cuitry (not
actuated)
BN
WH
BU
BK
BU
BN
WH
BU
BK
BU
BN
WH
BK
PK
GY
BU
F2
F1
Rv
Safe switch
on distance
Sao [mm]2)
3 7 7 6 9 9 (7)3)
Safe switch
off distance
Sar [mm]
12 20 20 31 22 20 (15)3)
1) The LED for the output state indication has an internal resistance of 1.5 kΩ.
2) There must not be any ferro-magnetic material near the sensor or actuator. All data apply for approach
from the front and alignment offset m = 0.
3) Response distance for the output state indication and LED.
9.2 Dimensional drawings
Dimensional drawings magnetic safety switches RE1.. (mm)
9 TECHNICAL DATA
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Dimensional drawings magnetic safety switches RE2.. (mm)
TECHNICAL DATA 9
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Dimensional drawings male connector (mm)
9.3 Typical response range
Switch on range
Switch off range
Figure 14: Typical response range
RE1
10 15 20
-20 -15 5
20
15
10
5
-20
X
Y
Z
10
5
15
Switch on range
Switch off range
Figure 15: Typical response range RE2
9 TECHNICAL DATA
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