Di-soric SR-1 Manuel utilisateur

Safety Technology

Instruction manual

Safety relays SR-1 and SR-M

INSTRUCTION MANUAL SAFETY RELAYS SR-1 + SR-M

2 State 03 / 2015 ■Rev. 0

English

INSTRUCTION MANUAL SAFETY RELAYS SR-1 + SR-M

State 03 / 2015 ■Rev. 0 3

English

Safety relays SR-1 and SR-M

CONTENT

INTRODUCTION ....................................................................................................... 4

RELAY SR-1 ............................................................................................................. 5

OPERATING MODES DESCRIPTION ......................................................................................... 5

Automatic .................................................................................................................................. 5

Manual....................................................................................................................................... 6

Connection of external contactors K1 and K2 ........................................................................... 7

SIGNAL DESCRIPTION ............................................................................................................... 8

The RESTART command.......................................................................................................... 8

K1 / K2 FEEDBACK input ......................................................................................................... 8

SYSTEM STATUS output ......................................................................................................... 8

INSTALLATION and ELECTRICAL CONNECTIONS ................................................................. 9

Characteristics of the output circuit ........................................................................................... 9

Use of K1 and K2 auxiliary contact elements............................................................................ 9

Warnings regarding the connection cables ............................................................................. 10

STATUS INDICATORS............................................................................................................... 10

DIMENSIONS.............................................................................................................................. 11

TECHNICAL DATA SR-1 ........................................................................................................... 12

STATUS INDICATORS / FAULT DIAGNOSIS........................................................................... 13

Status Indicators...................................................................................................................... 13

Fault Diagnosis........................................................................................................................ 13

RELAY SR-M .......................................................................................................... 14

OPERATING MODES DESCRIPTION ....................................................................................... 14

Automatic ................................................................................................................................ 14

Manual..................................................................................................................................... 15

Connection of K1 / K2 external contactors .............................................................................. 16

CONNECTON EXAMPLES ........................................................................................................ 17

Connection of the SR-M to a light barrier ................................................................................ 17

MUTING FUNCTION................................................................................................................... 18

Muting sequence ..................................................................................................................... 19

Muting OVERRIDE function .................................................................................................... 20

Override with maintained action control .................................................................................. 21

Override with pulse control...................................................................................................... 21

SIGNALS DESCRIPTION........................................................................................................... 22

The RESTART command........................................................................................................ 23

K1 / K2 FEEDBACK input ....................................................................................................... 23

SYSTEM STATUS output ....................................................................................................... 23

INSTALLATION and ELECTRICAL CONNECTIONS ............................................................... 24

Characteristics of the output circuit ......................................................................................... 24

Use of K1 and K2 auxiliary contact elements.......................................................................... 24

Warnings regarding the connection cables ............................................................................. 25

STATUS INDICATORS............................................................................................................... 25

DIMENSIONS.............................................................................................................................. 26

TECHNICAL DATA SR-M .......................................................................................................... 27

STATUS INDICATORS / FAULT DIAGNOSIS........................................................................... 28

Status Indicators BASE MODULE........................................................................................... 28

Status Indicators MUTING MODULE ...................................................................................... 28

Fault Diagnosis........................................................................................................................ 29

WARRANTY ........................................................................................................... 30

(Copy of the Original instructions)

INSTRUCTION MANUAL SAFETY RELAYS SR-1 + SR-M

4 State 03 / 2015 ■Rev. 0

English

INTRODUCTION

The SR-1 / SR-M relays, connected to an IEC 61496 – 1/2 certified type 4 safety light curtain

and equipped with two auto-controlled PNP type solid-state outputs, is a type 4 ESPE (Electro-

sensitive Protective Equipment).

The other characteristics indicated above remaining constant, if the safety light curtain is type 2,

the entire ESPE will be type 2.

The SR-1 main features are the following:

•Inputs for the connection of one safety barrier with fail safe outputs

•Restart manual or automatic selectable

•2 NO outputs with guided contact safety relays

•1 system monitor PNP output

•1 external contactors feedback input

The SR-M main features are the following:

•Inputs for the connection of one safety barrier with fail safe outputs

•Restart manual or automatic selectable

•2 NO outputs with guided contact safety relays

•1 system monitor PNP output

•1 external contactors feedback input

•Muting function with two sensors logic

•1 Muting function enable input

•1 muting lamp output

•Muting Override function integrated

•Selectable muting timeout

The safety modules also guarantees that:

•the output lines are open if the barrier is intercepted,

•the output lines are enabled only with correct response times,

•in manual mode, maintenance of the RESTART contact closed is not interpreted as

AUTO mode.

!For safe use of the device, it is essential to read and understand the contents of this

handbook.

!Failure to comply with the prescriptions indicated in this handbook may result in very

high risks for the operating personnel of the machine protected!

INSTRUCTION MANUAL SAFETY RELAYS SR-1 + SR-M

State 03 / 2015 ■Rev. 0 5

English

RELAY SR-1

OPERATING MODES DESCRIPTION

OPERATING MODES SELECTION

TERMINAL 5

TERMINAL 6

OPERATION

0 V DC

+24 V DC

Automatic

+24 V DC

0 V DC

Manual

0 V DC

Non-permissible conditions

+24 V DC

Table 1

Automatic

In this operating mode, the outputs of the safety relay follow the status of the photocell:

•with the protected area free (outputs of the barrier active), the relay outputs of the control unit are

active.

•with the protected area occupied (outputs of the barrier de-activated), the relay outputs of the

safety module are de-activated.

Figure 1

!Use in manual mode (start/restart interlock activated) is mandatory in the case in which

the safety device controls an access protecting a danger zone and once a person has

passed through the opening, he / she may remain in the danger zone without being

detected (use as trip device according to IEC 61496). Failure to comply with this rule

may result in very serious risks for the persons exposed.

INSTRUCTION MANUAL SAFETY RELAYS SR-1 + SR-M

6 State 03 / 2015 ■Rev. 0

English

Manual

In this operating mode, the outputs of the control unit are activated only if the protected area is free

and after sending the RESTART signal to the control unit using the push-button or by means of a

specific command on the RESTART input (terminal 4).

Once the protected area has been occupied, the relay outputs are de-activated. The sequence

described above must be repeated in order to re-activate them.

The RESTART command is active with a voltage of 24 V DC.

The minimum duration of the command is 100 ms.

Figure 2

!Check correct functioning of the entire safety system (relay + barrier) following each

re-installation. In particular, if the original operating mode was Manual, check that the

unit has been reconfigured in this mode.

INSTRUCTION MANUAL SAFETY RELAYS SR-1 + SR-M

State 03 / 2015 ■Rev. 0 7

English

Connection of external contactors K1 and K2

Control of external contactors K1 / K2 can be activated in both operating modes.

If this control must be used, the series of normally closed contacts of the external contactors must

be connected to terminal 11 of the control unit (figures 3 and 4).

Figure 3

Automatic operation with K1 / K2 relays

Figure 4

Manual operation with K1 / K2 relays

INSTRUCTION MANUAL SAFETY RELAYS SR-1 + SR-M

8 State 03 / 2015 ■Rev. 0

English

SIGNAL DESCRIPTION

TERMINAL

NUMBER

SIGNAL

NAME

TYPE OF

SIGNAL

DESCRIPTION

24 V DC

Power supply 24 V DC

0 V DC

Power supply 0 V DC

Ground connection

RESTART

Input

Restart command

MAN

Input

Manual / Automatic Configuration

AUTO

Input

INPUT 1 BARR

Input

Safety barrier input 1 status

INPUT 2 BARR

Input

Safety barrier input 2 status

n. c.

K1 / K2 (Feedback)

Input

Feedback external contactors K1 / K2

SYSTEM STATUS

Output

Output status

Relay B No. 1

Output

Safety relay B, contact 1 (NO)

Relay B No. 2

Output

Safety relay B, contact 2 (NO)

Relay A No. 1

Output

Safety relay A, contact 1 (NO)

Relay A No. 2

Output

Safety relay A, contact 2 (NO)

Table 2

The RESTART command

•The RESTART command must be sent to the control unit connecting terminal 4 to the +24 V DC.

•

The contact used for the RESTART command must be able to switch a voltage of 24 V DC and a

current of 20 mA (guaranteeing a closing time > 100 ms). This data is particularly important in the

case of automatic management of the RESTART command sending, for example using a PLC

•The SYSTEM RESET TIME is obtained adding the reset time of any external contactors K1 / K2 to

the reset time of the SR-1 control unit (100 ms).

•In the case of manual activation, a normally open external button can be used, temporary closing

of which generates the RESTART command.

!The Restart command must be installed outside the danger area in a position where the

danger area and the entire work area concerned are clearly visible.

!It must not be possible to reach the control from inside the danger area.

K1 / K2 FEEDBACK input

Using the K1 and K2 auxiliary safety contactors with guided contact safety type, it is necessary to

connect the + 24 V DC to the K1 / K2 FEEDBACK through the series of the K1-1 and K2-1 NC

control contacts. The control of the correct switching of K1 and K2 is performed with a delay of

300 ms after the real command. When the K1-1 and K2-1 NC control contacts are not used (or

control is provided) it is mandatory to connect the terminal 11 (K1 / K2 FEEDBACK) to the +24 V DC.

SYSTEM STATUS output

The SYSTEM STATUS output reports exactly the output safety relays status:

•when the output relays are opened, the SYSTEM STATUS reports 0 V DC,

•when the output relays are closed, the SYSTEM STATUS reports +24 V DC.

INSTRUCTION MANUAL SAFETY RELAYS SR-1 + SR-M

State 03 / 2015 ■Rev. 0 9

English

INSTALLATION and ELECTRICAL CONNECTIONS

!Install the SR-1 safety relay in an environment with a protection rating of at least IP54.

!If more modules SR-1 must be installed in the same board panel, in order to avoid

overheating, maintain between them one minimal distance of 2 cm.

!The SR-1 control unit must be supplied with a 24 V DC ±20%.

!The external power supply must comply with the standard EN 60204-1.

!During the installation of the SR-1 control unit be sure to avoid short circuits between

the contacts 7 and 8.

Characteristics of the output circuit

For the output circuit, the control unit uses two guided contact safety relays.

These relays are rated by the manufacturer for voltage and current values above those indicated in

the technical data; however, to assure correct insulation and to avoid damage or premature aging,

protect each output line with a 4 A slow-blow fuse and check that load characteristics comply with

the indications given in the table below.

Minimum switching voltage

18 V DC

Minimum switching current

20 mA

Maximum switching voltage

250 V AC

Maximum switching current

2 A

Use of K1 and K2 auxiliary contact elements

For loads with higher voltage and current characteristics than those indicated in the table above,

use of auxiliary external relays or contactors suitable for the load to be controlled is recommended.

The K1 and K2 auxiliary contactors or relays must be of the guided contact safety type.

Referring to the table below, pay particular attention to the configuration of the control contacts on

terminal 11 and that of the contacts of use.

Relay K1

Relay K2

Control contacts

K1-1 normally closed

K2-1 normally closed

Use contacts

K1-2 normally open

K2-2 normally open

•Control contacts K1-1 and K2-1 (terminal 11) must be able to switch a current of 20 mA and

a voltage of 24 V DC.

•To increase the electrical life of internal relays A and B, it is advisable to use anti-disturbance

devices, which must be connected across the coils of K1 and K2.

INSTRUCTION MANUAL SAFETY RELAYS SR-1 + SR-M

10 State 03 / 2015 ■Rev. 0

English

Warnings regarding the connection cables

•For safety light curtain / control unit connections of more than 50 m, cables with a cross-section of

at least 1 mm2must be used.

•It is good practice to separate the power supply of the control unit from that of other electrical

appliances (electrical motors, inverters, frequency variators) or other sources of disturbance.

•The path of the connection cables between the control unit and the sensors, the connection

referring to the test command and feedback contacts connected to terminal 11 must be different

from that of other power cables.

STATUS INDICATORS

LED

COLOR

STATUS

CONDITION

GREEN

Barrier free

OFF

Barrier intercepted

FAIL

RED

Fault detected *

Correct operation

GUARD

BREAK

GREEN

RED

YELLOW

RED

Output relays opened

RED

blinking

The number of blinkings shows the

kind of FAIL (only with FAIL is ON) *

GREEN

Output relays closed

YELLOW

Barrier free - Output relays opened

(only in manual mode)

Table 3

* REFER TO THE "FAULT DIAGNOSIS" SECTION – PAGE 13 – TO HAVE

A DETAILED EXPLANATION OF THE POSSIBLE FAULT.

5 6 7 8

1 2 4

13 14 15 16

FAIL

GUARD

BREAK

Ce manuel convient aux modèles suivants

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