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5

SRB 211AN V.2 / CC V.2 / PC V.2

Operating instructions
Safety-monitoring module

EN

5.4  Setting report SRB 211 AN

This report regarding the setting of the device must be completed 
accordingly by the customer and enclosed in the technical manual of 
the machine.

The setting report must be available whenever a safety check is performed. 

Company:

The safety-monitoring module is used in the following machine:

Machine n°

Machine type

Module n°

Set drop-out delay:

Set on (date)

Signature of the responsible person

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 fixing
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 influence 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 fixing of the safety-monitoring module
2. Check the cable for damages
3. Check electrical function
4. Check drop-out delay

The device has to be integrated into the periodic check-ups 
according to the Ordinance on Industrial Safety and Health, 
however at least 1 × year.

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. Push up the bottom of the enclosure and hang out 
slightly tilted forwards.

7.2  Disposal

The safety-monitoring module must be disposed of in an appropriate 
manner in accordance with the national prescriptions and legislations.

8.  Appendix

8.1  Wiring examples

Dual-channel control, shown for a guard door monitor; with two 
contacts A and B, where at least one is a positive break contact; 
with external reset button 

J

 (see Fig. 8)

•  Relay outputs: Suitable for 2-channel control, for increase in capacity 

or number of contacts by means of contactors or relays with positive-
guided contacts.

•  The control system recognises wire-breakage, earth faults and cross-

wire shorts in the monitoring circuit.

K3

K2

K1

K4

F1*

F2**

F4*

F3*

A1

L1

N

K

B

K

A

K1

K

B

K

A

K2

24

38

14

13

23

37

Timer

a)

J

S

UB

Ui

Y1

S22

S13 S14

X1

X2

X3

S21

K

A

K

B

K

D

K

C

K

C

K

D

K3

K4

A2

Fig. 8
a) Logic

Electronic fuse

**   Hybrid fuse

S

  Feedback circuit

8.2  Start configuration

External reset button (with edge detection) (see Fig. 9)

•  The external reset button is integrated as shown.

•  The safety-monitoring module is activated by the reset (after release) 

of the reset button (= detection of the trailing edge). Faults in the reset 
button, e.g. welded contacts or manipulations which could lead to an 
inadvertent restart, are detected in this configuration and will result in 
an inhibition of the operation.

Automatic start (see Fig. 10)

•  The automatic start is programmed by connecting the feedback circuit 

to the terminals. If the feedback circuit is not required, establish a 
bridge.

• 

 Caution:

 Not admitted without additional measure due to the risk of 

gaining access by stepping behind!

• 

 

Caution: Within the meaning of EN IEC 60204-1 paragraph 9.2.5.4.2 
and 10.8.3, the operating mode "automatic start" is only restrictedly 
admissible.  In particular, any inadvertent restart of the machine must 
be prevented by other suitable measures.

K

B

J

S

K

A

X2

X1

K

B

S

K

A

X3

X1

Fig. 9

Fig. 10

Summary of Contents for SRB 211AN V.2

Page 1: ...acturer 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 o...

Page 2: ...ontrol category 4 PL e to DIN EN ISO 13849 1 Corresponds to SIL 3 to DIN EN 61508 2 SILCL 3 to DIN EN 62061 The safety relevant current paths with the outputs contacts 37 38 meet the following require...

Page 3: ...75 087 7 0 min 80 30 918 17 0 min 100 12 223 43 0 min 2 6 Derating curve 21 A 18 A 15 A 12 A 9 A 6 A 3 A 0 A 35 C 40 C 45 C 50 C 55 C 60 C 65 C Fig 1 vertical residual current horizontal ambient tempe...

Page 4: ...hes can be set when the operating voltage is on however in order for the setting to be saved in the SRB 211ST the voltage supply must be interrupted for approx 3 seconds The set drop out delay must be...

Page 5: ...sposal The safety monitoring module must be disposed of in an appropriate manner in accordance with the national prescriptions and legislations 8 Appendix 8 1 Wiring examples Dual channel control show...

Page 6: ...hing current min 10 mA For example the following safety sensors meet the requirements BNS 33 11z BNS 33 11z 2063 BNS 33 11zG 2237 BNS 250 11z BNS 250 11zG BNS 120 11z BNS 180 11z BNS 303 11z BNS 303 1...

Page 7: ...Person authorized for the compilation of the technical documentation Oliver Wacker M ddinghofe 30 42279 Wuppertal Notiied body which approved the full quality assurance system referred to in Appendix...

Page 8: ...KG Industrielle Sicherheitsschaltsysteme M ddinghofe 30 D 42279 Wuppertal Postfach 24 02 63 D 42232 Wuppertal Telefon 49 0 2 02 64 74 0 Telefax 49 0 2 02 64 74 1 00 E mail info schmersal com Internet...

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