schmersal SRB 202CS/T, SRB 202CS, SRB 202CA/T, SRB 202CA/QT, SRB 202CA Operating Instructions Manual

...
Operating instructions Safety-monitoring module
EN
Operating instructions...................... pages 1 to 8
Translation of the original operating instructions
Vous trouverez la version
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ES
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IT
nato nella vostra lingua (lingua
ufciale UE) è scaricabile in Internet all‘indirizzo
www.schmersal.net.
SRB 202CS / SRB 202CS/T / SRB 202CA/T /
SRB 202CA/QT / SRB 202CA / SRB 202CA/Q
1 About this document
1.1 Function
This operating instructions manual provides all the information you
need for the mounting, set-up and commissioning to ensure the safe
operation and disassembly of the safety-monitoring module. The operating instructions must be available in a legible condition and a complete version in the vicinity of the device.
1.2 Target group: authorised qualied personnel
All operations described in this operating instructions manual must
be carried out by trained specialist personnel, authorised by the plant
operator only.
Please make sure that you have read and understood these operating instructions and that you know all applicable legislations regarding occupational safety and accident prevention prior to installation and putting the component into operation.
The machine builder must carefully select the harmonised standards
to be complied with as well as other technical specications for the selection, mounting and integration of the components.
1.3 Explanation of the symbols used
Information, hint, note:
This symbol is used for identifying useful additional information.
Content
1 About this document
1.1 Function . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1
1.2 Target group: authorised qualied personnel. . . . . . . . . . . . . . . . . .1
1.3 Explanation of the symbols used . . . . . . . . . . . . . . . . . . . . . . . . . . .1
1.4 Appropriate use . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
1.5 General safety instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1
1.6 Warning about misuse . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1
1.7 Exclusion of liability . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
2 Product description
2.1 Ordering code . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2
2.2 Special versions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
2.3 Destination and use . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2
2.4 Technical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
2.5 Safety classication . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3
3 Mounting
3.1 General mounting instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3
3.2 Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3
4 Electrical connection
4.1 General information for electrical connection. . . . . . . . . . . . . . . . . . 3
5 Operating principle and settings
5.1 LED functions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
5.2 Description of the terminals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3
Caution: Failure to comply with this warning notice could lead to failures or malfunctions. Warning: Failure to comply with this warning notice could lead to physical injury and/or damage to the machine.
1.4 Appropriate use
The products described in these operating instructions are developed to
execute safety-related functions as part of an entire plant or machine. It
is the responsibility of the manufacturer of a machine or plant to ensure the proper functionality of the entire machinery or plant.
The safety-monitoring module must be exclusively used in accordance with the versions listed below or for the applications authorised by the manufacturer. Detailed information regarding the range of applications can be found in the chapter “Product description”.
1.5 General safety instructions
The user must observe the safety instructions in this operating instructions
manual, the country-specic installation standards as well as all prevailing
safety regulations and accident prevention rules.
Further technical information can be found in the Elan catalogues or in the online catalogue on the Internet: www.schmersal.net.
The information contained in this operating instructions manual is provided
without liability und is subject to technical modications.
21.01.2010 / Index: 441/09 / Teile-Nr. 1176229-EN
6 Set-up and maintenance
6.1 Functional testing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
6.2 Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4
7 Disassembly and disposal
7.1 Disassembly. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
7.2 Disposal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4
8 Appendix
8.1 Wiring examples . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4
8.2 Start conguration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
8.3 Sensor conguration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
8.4 Actuator conguration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
8.5 Flowcharts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
8.6 EC Declaration of conformity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8
There are no residual risks, provided that the safety instructions as well as the instructions regarding mounting, commissioning, operation and
maintenance are observed.
1.6 Warning about misuse
In case of inadequate or improper use or manipulations of the safety-monitoring module, personal hazards or damage to ma-
chinery or plant components cannot be excluded. The relevant
requirements of the standard EN 1088 must be observed.
EN
1
Operating instructions Safety-monitoring module
SRB 202CS / SRB 202CS/T / SRB 202CA/T /
SRB 202CA/QT / SRB 202CA / SRB 202CA/Q
1.7 Exclusion of liability
We shall accept no liability for damages and malfunctions resulting from defective mounting or failure to comply with this operating instructions manual. The manufacturer shall accept no liability for damages resulting from the use of unauthorised spare parts or accessories.
For safety reasons, invasive work on the device as well as arbitrary re­pairs, conversions and modications to the device are strictly forbidden;
the manufacturer shall accept no liability for damages resulting from
such invasive work, arbitrary repairs, conversions and/or modications
to the device.
2 Product description
2.1 Ordering code
This operating instructions manual applies to the following types:
SRB 202 No. Option Description
* with reference to switch-off level 1
2.2 Special versions
For special versions, which are not listed in the order code below 2.1, these specications apply accordingly, provided that they correspond
to the standard version.
2.3 Destination and use
The safety-monitoring modules for integration in safety circuits are
designed for tting in control cabinets. They are used for the safe
evaluation of the signals of positive break position switches or magnetic
safety sensors for safety functions on sliding, hinged and removable
safety guards as well as emergency stop control devices and AOPD’s.
The safety function is dened as the opening of enabling circuits 13-24 when the inputs S31-S32 and/or S41-S42 (S43-S44) are opened and as the opening of enabling circuits 13-14 and 13-24 when the inputs
S12 and/or S22 are opened.The safety-relevant current paths with the
output contacts 13-14 and 13-24 meet the following requirements under
observation of a B
DIN EN ISO 13849-1”): – Control category 4 – PL e to DIN EN ISO 13849-1 – corresponds to SIL 3 to DIN EN 61508-2 – corresponds to SILCL 3 to DIN EN 62061
To determine the Performance Level (PL) of the entire safety function (e.g. sensor, logic, actuator) to DIN EN ISO 13849-1, an analysis of all relevant components is required.
CS Reset not monitored, optionally automatic reset* CS/T Reset monitored* CA Reset not monitored, optionally automatic reset*,
switch-off level 2 with antivalent inputs
CA/T Reset monitored*, switch-off level 2 with
antivalent inputs, cross-wire short detection*
CA/Q Reset not monitored, optionally automatic reset*,
switch-off level 2 with antivalent inputs
CA/QT Reset monitored*, switch-off level 2 with
antivalent inputs, cross-wire short detection*
Only if the information described in this operating instructions
manual are realised correctly, the safety function and therefore
the compliance with the Machinery Directive is maintained.
value assessment (also refer to “Requirements to
10d
(corresponds to control category 4 to DIN EN 954-1)
2.4 Technical data
General data
Standards: IEC/EN 60204-1, EN 60947-5-1,
EN ISO 13849-1; IEC/EN 61508 Climate resistance: EN 60068-2-78 Fixing: Snaps onto standard DIN rails to
DIN EN 60715 Terminal designations: EN 60947-1 Material of the enclosure: glass-bre reinforced thermoplastic,
ventilated Material of the contacts: AgSnO, AgNi, self-cleaning,
positive drive Weight: 235 g Start conditions Automatic or start button
(Refer to 2.1 Ordering code) Feedback circuit (Y/N): Yes Pull-in delay with reset button: Switch-off level 1: typ. 40 ms
Switch-off level 2: typ. 0.5 sec.
Drop-out delay in case
of emergency stop:
Mechanical data
Connection type: Screw connection Cable section: min. 2 mm Connecting cable: rigid or exible Tightening torque for the terminals: With removable terminals (Y/N): Yes Mechanical life: 10 million operations Electrical life: Derating curve available on request Resistance to shock: 10 g / 11 ms
Resistance to vibrations
to EN 60068-2-6:
Ambient conditions
Ambient temperature: –25°C … +45°C
Storage and transport
temperature: Protection class: Enclosure: IP 40
Air clearances and creepage
distances to IEC/EN 60664-1: EMC rating: to EMC Directive
Electrical data
Contact resistance
in new state: Power consumption: max. 4.4 W Rated operating voltage U
Max. fuse rating of
the operating voltage:
Monitored inputs
Cross-wire detection (Y/N): Refer to 2.1 Ordering code Wire breakage detection (Y/N): Yes Earth leakage detection (Y/N): Yes Number of NO contacts: CS, CS/T: 0 pc.
Number of NC contacts: CS, CS/T: 4 pc
Current and voltage limitation
of the control contacts: Cable lengths: 1-channel without cross-wire
Conduction resistance: max. 40 Ω
typ. 50 ms
2
/ max. 2 mm
0.6 Nm
10 ... 55 Hz, amplitude 0.35 mm
–40°C … +85°C
Terminals: IP 20
Wiring compartment: IP 54
4 kV/2 (basic insulation)
max. 100 mΩ
: 24 VDC –15%/+20%,
e
residual ripple max. 10%
electronic fuse,
tripping current > 1 A;
reset after approx. 1 sec.
CA, CA/T, CA/Q, CA/QT: 1 pc.
CA, CA/T, CA/Q, CA/QT: 3 pc
S31-S32, S43-S44:
26 VDC / 100 mA26 VDC / 100 mA
short detection:
– 1,500 m = 1.5 mm²
– 2,500 m = 2.5 mm²
2-channel with or without
cross-wire short detection
2
2
EN
Operating instructions
B d x x
s/h3600
Safety-monitoring module
SRB 202CS / SRB 202CS/T / SRB 202CA/T /
SRB 202CA/QT / SRB 202CA / SRB 202CA/Q
Outputs
Number of safety contacts: 2 Number of auxiliary contacts: 2
Switching capacity of the
safety contacts:
Switching capacity of
the auxiliary contacts:
Fuse rating of the safety contacts Recommended fuse for the auxiliary contacts
Utilisation category to EN 60947-5-1: Dimensions (H/W/D): 100 mm x 22.5 mm x 121 mm The data specied in this manual is applicable when the component is operated with rated operating voltage U
2.5 Safety classication
Standards: EN ISO 13849-1, IEC 61508,
PL: Stop 0: up to e Control category: Stop 0: up to 4 DC: Stop 0: 99% (high) CCF: > 65 points SIL: Stop 0: up to 3 Service life: 20 years
B
value (for one channel): Low voltages range 20%: 20,000,000
10d
MTTF
d
For an average annual demand rate of nop = 126,720 cycles Performance Level PL e can be obtained at maximum load. nop = average number of activations per year dop = average number of operating days per year hop = average number of operating hours per day t
= average demand rate of the safety function in s
cycle
(Specications can vary depending on the application-specic parameters hop, dop and t
10d op op
0,1 x n
op
(e.g. 4 × per hour = 1 × per 15 min. = 900 s)
13-14; 13-24:
max. 250 V, 6 A ohmic (inductive in case of appropriate protective wiring) max. residual current 6 A
31-32, 31-42:
24 VDC / 2 A
6.3 A slow blow
2 A slow blow
AC-15: DC-13: EN 60947-5-1:2007
±0%.
e
EN 60947-5-1
40%: 7,500,000 60%: 2,500,000 80%: 1,000,000 Maximum load 100%: 400,000
n
op
as well as the load.)
cycle
h
t
cycle
per year,
4 Electrical connection
4.1 General information for electrical connection
The electrical connection may only be carried out by authorised personnel in a de-energised condition.
Wiring examples: see appendix
5 Operating principle and settings
5.1 LED functions
• K1: Status channel A
• K2: Status channel B
• K3: Status channel C
• K4: Status channel D : Status operating voltage (LED is on, when the operating
• U
B
voltage on the terminals A1-A2 is ON)
• Ui: Status internal operating voltage (LED is on, when the
operating voltage on the terminals A1-A2 is ON and the fuse has not been triggered)
5.2 Description of the terminals
Voltages: A1
A2
Inputs: S12
S22 S31-S32
S41-S42
S43-S44
Outputs: 13-14
13-24
31-32
31-42
Start: X1
X2
+24 VDC 0 VDC Switch-off level 1, input channel 1 Switch-off level 2, input channel 2 Switch-off level 2, input channel 1 Switch-off level 2, input channel 2 (SRB 202CS, 202CS/T) Switch-off level 2, input channel 2 (SRB 202CA, SRB 202CA/T, SRB 202CA/Q, SRB 202CA/QT) First safety enabling circuit (stop 0),
switch-off level 1
Second safety enabling circuit (stop 0),
switch-off level 2
Auxiliary NC contact, switch-off level 1 (must not be used in safety circuits) Auxiliary NC contact, switch-off level 2 (must not be used in safety circuits) Feedback circuit, manual start (reset button), automatic start, switch-off level 1 Feedback circuit, manual start (reset button), automatic start, switch-off level 2
3 Mounting
3.1 General mounting instructions
Mounting: snaps onto standard DIN rails to EN 60715.
Snap the bottom of the enclosure slightly tilted forwards in the
DIN rail and push up until it latches in position.
3.2 Dimensions
All measurements in mm.
Device dimensions (H/W/D): 100 x 22.5 x 121 mm with plugged-in terminals: 120 × 22.5 × 121 mm
Fig. 1
EN
24 14 13 31
S22 S12 A1
X1
UB
Ui
K1
SRB
K2
202
…*
K3
K4
S32 S42
X2 A2
S31 32 42
S41
3
Operating instructions Safety-monitoring module
SRB 202CS / SRB 202CS/T / SRB 202CA/T /
SRB 202CA/QT / SRB 202CA / SRB 202CA/Q
Due to the operating principle of the electronic fuse, the customer must check that no hazard is caused by an unexpected restart in circuits without reset button
(automatic reset).
6 Set-up and maintenance
6.1 Functional testing
The safety function of the safety-monitoring module must be tested.
The following conditions must be previously checked and met:
1. Correct xing
2. Check the integrity of the cable entry and connections
3. Check the safety-monitoring module’s enclosure for damage.
4. Check the electrical function of the connected sensors and their inuence on the safety-monitoring module and the
downstream actuators
6.2 Maintenance
A regular visual inspection and functional test, including the following steps, is recommended:
1. Check the correct xing of the safety-monitoring module
2. Check the cable for damages
3. Check electrical function
Damaged or defective components must be replaced.
7 Disassembly and disposal
7.1 Disassembly
The safety-monitoring module must be disassembled in a de-energised condition only.
7.2 Disposal
The safety-monitoring module must be disposed of in an appropriate manner in accordance with the national prescriptions and legislations.
24 VDC
L1
J
X1 S31 S32S42 31
F1
UB
Ui
K1 K3 K4K2
a)
A2
13
X2S41S22S12A1
K1
K3
K1 K2
K3 K4
K4
K2
14
K
K
B
KCK
A
42
24
32
D
N
S
K
C
K
D
K
K
C
A
K
K
B
D
Fig. 2: SRB 202CS, 202CS/T a) Logic
Dual-channel control, shown for a emergency stop circuit; with two contacts A and B and a guard door monitor with two contacts C and D, where at least one is a positive break contact; with external reset button J (related on the switch-off level 1) (see Fig. 3)
• Relay outputs: Suitable for 2-channel control, for increase in capacity
or number of contacts by means of contactors or relays with positive­guided contacts.
The control system of the emergency stop circuit detects wire breakage and earth faults (cross-wire shorts in the SRB 202CA/QT and SRB 202CA/Q versions). The control system of the door monitoring circuits detects wire breakage, earth faults and cross-wire shorts.
S = Feedback circuit
Channel B of SRB 202CA/Q and SRB 202CA/QT: 0 V – S22 (see Fig. 4)
24 VDC
L1
J
X1 S31 S32S44 31
13
X2S43S22S12A1
8 Appendix
8.1 Wiring examples
Dual-channel control, shown for a emergency stop circuit; with two contacts A and B and a guard door monitor with two contacts C and D, where at least one is a positive break contact; with external reset button J (related on the switch-off level 1) (see Fig. 2)
• Relay outputs: Suitable for 2-channel control, for increase in capacity
or number of contacts by means of contactors or relays with positive­guided contacts.
The control system recognises wire-breakage and earth faults in the
monitoring circuit.
S = Feedback circuit
F1
UB
Ui
K1 K3 K4K2
A2
a)
K1
K3
K1 K2
K3 K4
K4
K2
14
K
K
B
KCK
A
42
24
32
D
N
Fig. 3: SRB 202CA, 202CA/T, SRB 202CA/Q, SRB 202CA/QT a) Logic
24 VCC
0 V
S12 S22
Fig. 4
S
K
C
K
D
K
K
C
A
K
K
B
D
4
EN
Operating instructions Safety-monitoring module
SRB 202CS / SRB 202CS/T / SRB 202CA/T /
SRB 202CA/QT / SRB 202CA / SRB 202CA/Q
8.2 Start conguration
External reset button (Fig. 5)
The external reset button is wired to the terminals X1 (without edge detection for switch-off level 1) and X2 (without edge detection for switch-off level 2).
The external reset button is integrated in the feedback circuit in series.
24 VDC
J J
K
K
A
C
K
K
B
D
X1
24 VDC
K
K
X2
C
D
Fig. 5
left = switch-off level 1 right = switch-off level 2 (SRB 202CA, SRB 202CS and SRB 202CA/Q)
External reset button (Fig. 6)
The external reset button is wired to the terminals X1 (with edge detection for switch-off level 1) and X2 (without edge detection for switch-off level 2).
The external reset button is integrated in the feedback circuit in series.
* Automatic start at switch-off level 2: the reset button J must be
replaced with a bridge.
24 VDC
J J
24 VDC
*
8.3 Sensor conguration
8.3.1 Sensor conguration superordinated switch-off level 1
Single-channel emergency stop circuit with command devices to DIN EN ISO 13850 (EN 418) and EN 60947-5-5 (Fig. 8)
Wire breakage and earth leakage in the control circuits are detected.
Dual-channel emergency stop circuit with command devices to DIN EN ISO 13850 (EN 418) and EN 60947-5-5 (Fig. 9)
Wire breakage and earth leakage in the control circuits are detected.
Cross-wire shorts between the control circuits are not detected.
Dual-channel emergency stop circuit with command devices to DIN EN ISO 13850 (EN 418) and EN 60947-5-5 (Fig. 10)
Wire breakage and earth leakage in the control circuits are detected.
Cross-wire shorts between the control circuits are detected.
24 VDC
S12
S12 S22
Fig. 8
SRB 202CA, SRB 202CS, SRB 202CA/T, SRB 202CS/T
24 VDC24 VDC
S12 S22
Fig. 9 SRB 202CA, SRB 202CS, SRB 202CA/T, SRB 202CS/T
24 VDC 0 VDC
S12 S22
Fig. 10 SRB 202CA/Q, SRB202CA/QT
K
K
A
C
K
K
B
D
X1
K
C
K
D
X2
Fig. 6 left = switch-off level 1 right = switch-off level 2 (SRB 202CA/T, SRB 202CS/T and SRB 202CA/QT)
Automatic start (see Fig. 7)
The automatic start is programmed by connecting the feedback circuit to the terminals X1 (referring to the switch-off level 1) and X2 (referring to the switch-off level 2). Feedback circuits are not required
to be replaced by a bridge.
When the safety-monitoring module is used with the operating mode “Automatic start”, an automatic restart after a shutdown in case of emergency must be prevented by the upstream control to EN 60204-1 paragraph 9.2.5.4.2 and 10.8.3.
* An external reset button for a manual start can be installed in
switch-off level 2.
24 VDC
24 VDC
*
K
K
A
C
K
K
B
D
X1
Fig. 7 left = switch-off level 1 right = switch-off level 2 (SRB 202CA, SRB 202CS and SRB 202CA/Q)
K
C
K
D
X2
8.3.2 Sensor conguration, partially functioning switch-off level 2
Single-channel guard door monitoring circuit with interlocking devices to EN 1088 (Fig. 11)
With one positive-break position switch.
Wire breakage and earth leakage in the control circuits are detected.
Dual-channel guard door monitoring circuit with interlocking device to EN 1088 (Fig. 12)
With at least one positive-break position switch
The control system recognises wire-breakage and earth faults in
the control circuit.
Cross-wire shorts between the control circuits are not detected.
Dual-channel guard door monitoring circuit with interlocking device to EN 1088 (Fig. 13)
With at least one positive-break position switch
The control system recognises wire-breakage and earth faults in
the control circuit.
Cross-wire shorts between the control circuits are detected.
S31
S32
S43
S44
S31
S32
S32
S42
Fig. 11
SRB 202CS, SRB 202CS/T
S31
S41
S32
S42
Fig. 12
SRB 202CS, SRB 202CS/T
Fig. 13
SRB 202CA, SRB 202CA/T, SRB 202CA/Q, SRB 202CA/QT
EN
5
Operating instructions Safety-monitoring module
SRB 202CS / SRB 202CS/T / SRB 202CA/T /
SRB 202CA/QT / SRB 202CA / SRB 202CA/Q
8.3.3 Sensor conguration
Dual-channel control of magnetic safety switches to EN 60947-5-3 (see Fig. 14)
• The control system recognises wire-breakage, earth faults and
cross-wire shorts in the control circuits.
S31
S43
S32
S44
Fig. 14 SRB 202CA, SRB 202CA/T, SRB 202CA/Q, SRB 202CA/QT
The connection of magnetic safety switches to the
SRB 202C.. safety-monitoring modules is only admitted when the requirements of the standard EN 60 947-5-3
are observed.
As the technical data are regarded, at least the following requirements must be met:
• Switching capacity: min. 3 W
• Switching voltage: min. 30 VDC
• Switching current: min. 10 mA
For example, the following safety sensors from Schmersal meet the requirements:
• BNS 33-11z, BNS 33-12z-2063, BNS 33-11z-2063
• BNS 250-11z
• BNS 120-11z
• BNS 180-11z
• BNS 303-11z
8.4 Actuator conguration
Single-channel control (see Fig. 15)
Suitable for increase in capacity or number of contacts by means of
contactors or relays with positive-guided contacts.
S = Feedback circuit: if the feedback circuit is not required, establish a bridge.
• A = switch-off level 1, B = switch-off level 2
* Disabling of the enabling circuits 13-14, 13-24 when switch-off level 1
is triggered, disabling of the enabling circuit 13-24 when switch-off
level 2 is triggered
Dual-channel control (Fig. 16)
Suitable for increase in capacity or number of contacts by means of contactors or relays with positive-guided contacts.
S = Feedback circuit: if the feedback circuit is not required, establish a bridge.
• A = switch-off level 1, B = switch-off level 2
* Disabling of the enabling circuits 13-14, 13-24 when switch-off level
1 is triggered, disabling of the enabling circuit 13-24 when switch-off
level 2 is triggered
24 VDC
K
L1
J J
X1 X2 13
N
K
K
A
B
K
B
K
C
J
K
D
X1 X2 13
14
24
* *
K
K
A
B
N
A
J J
K
B
K
A
K
C
K
D
14
24
*
*
KBK
K
C
D
Caution! When sensors with LED are wired in the control
circuit (protective circuit), the following rated operating voltage must be observed and respected:
– 24 VDC with a max. tolerance of –5 %/+ 20 %
Otherwise availability problems could occur, especially in series-wired sensors, where a voltage drop in the control
circuit is triggered by LED's for instance.
Fig. 15 Fig. 16
6
EN
Operating instructions Safety-monitoring module
SRB 202CS / SRB 202CS/T / SRB 202CA/T /
SRB 202CA/QT / SRB 202CA / SRB 202CA/Q
8.5 Flowcharts
SRB 202CA, SRB 202CS, SRB 202CA/Q
see Fig. 17
a)
b)
c)
d)
e)
f)
SRB 202CA/T, SRB 202CS/T, SRB 202CA/QT
see Fig. 18
a)
b)
c)
d)
e)
f)
g)
Fig. 17 a) UB; b) Sensor level 1; c) Reset switch-off level 1; d) Sensor level 2; e) Reset switch-off level 2; f) Authorized operation 13-14 switch-off level 1; f) Authorized operation 13-24 switch-off level 2;
g)
Fig. 18
a) UB; b) Sensor level 1; c) Reset switch-off level 1; d) Sensor level 2; e) Reset switch-off level 2; f) Authorized operation 13-14 switch-off level 1; f) Authorized operation 13-24 switch-off level 2;
EN
7
Operating instructions Safety-monitoring module
Appendix
8.6 EC Declaration of conformity
EC Declaration of conformity
SRB 202CS / SRB 202CS/T / SRB 202CA/T /
SRB 202CA/QT / SRB 202CA / SRB 202CA/Q
Translation of the original declaration of conformity
valid as of December 29, 2009
We hereby certify that the hereafter described safety components both in its basic design and construction conforms to the applicable European Directives.
Name of the safety component: SRB 202CS / SRB 202CS/T /
Description of the safety component: Safety-monitoring module for emergency
Harmonised EC-Directives: 2006/42/EC EC-Machinery Directive
Person authorized for the compilation of the technical documentation:
Notied body, which approved the full quality assurance system, referred to in Appendix X, 2006/42/EC:
Elan Schaltelemente GmbH & Co. KG Im Ostpark 2 · 35435 Wettenberg
Germany
Internet: www.elan.de
SRB 202CA/T / SRB 202CA/QT / SRB 202CA / SRB 202CA/Q
stop circuits, guard door monitoring,
magnetic safety switches and AOPD's
2004/108/EC EMC-Directive
Ulrich Loss Möddinghofe 30 42279 Wuppertal
TÜV Rheinland Industrie Service GmbH Alboinstraße 56 12103 Berlin ID n°: 0035
Place and date of issue: Wuppertal, October 6, 2009
SRB202C...-B-EN
Elan Schaltelemente GmbH & Co. KG
Im Ostpark 2, D - 35435 Wettenberg Postfach 1109, D - 35429 Wettenberg
Telefon: +49 (0)641 9848-0 Telefax: +49 (0)641 9848-420 E-Mail: info-elan@schmersal.com Internet: www.elan.de
Authorised signature
Heinz Schmersal
Managing Director
Note
The currently valid declaration of conformity can be downloaded from the internet at www.schmersal.net.
8
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