Reer SR ZERO A Guide de démarrage rapide

8541408 - 17/05/2021 Rev.0 1

English

Installation use and maintenance

Safety Relay Module

(Original instructions)

SAFETY RELAY SR ZERO A

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English

SAFETY RELAY

SR ZERO A

INSTALLATION USE AND MAINTENANCE

TABLE OF CONTENTS

OVERVIEW ........................................................................................................................................3

INSTALLATION AND ELECTRICAL CONNECTIONS................................................................4

INSTRUCTIONS CONCERNING CONNECTION CABLES....................................................................... 4

PINOUT ....................................................................................................................................................... 5

CHECKLIST AFTER INSTALLATION......................................................................................................... 5

CHARACTERISTICS OF THE OUTPUT CIRCUIT...................................................................................... 9

STATUS INDICATORS.....................................................................................................................9

TECHNICAL DATA ........................................................................................................................ 10

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

INDICATIONS AND INFORMATION FOR ENVIRONMENTAL PROTECTION ................. 12

WARRANTY.................................................................................................................................... 13

EC DECLARATION OF CONFORMITY...................................................................................... 14

SAFETY RELAY SR ZERO A

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English

OVERVIEW

This symbol indicates an important personal safety warning. Failure to comply with the

warning may result in very high risk for exposed personnel.

➔This symbol indicates an important instruction.

The SR ZERO A is a safety relays expansion used to connect the machine safety circuit to

2 OSSD output devices i.e.:

•photoelectric light curtain

•laser scanner

•RFID sensor

See details below about light curtain models, wiring, etc.

When deciding on the safety category to be adopted, carefully consider the risks analysis of

the machine.

The module has been designed in particular for the ReeR light curtains of the Admiral AX

(category 4), Vision VX and Vision VXL/MXL (category 2) series, EOS, Magnus RFID sensor and

ReeR laser scanner. Consult ReeR before using the interface with other light curtain models

or safety devices.

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 notice may result in very high risks

for the operating personnel of the protected machine.

SAFETY RELAY SR ZERO A

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INSTALLATION AND ELECTRICAL CONNECTIONS

SR ZERO A is provided with terminal blocks for the electrical connections.

The unit provides 16 terminals.

➔Terminal tightening torque: 5...7lb-in (0,6...0,7 Nm).

Install SR ZERO A in an enclosure with a protection class of at least IP54.

Connect the safety relay module when it is not powered.

The supply voltage to the units must be 24 20% VDC; PELV (in compliance

with the standard EN 60204-1 (Chapter 6.4)).

Do not use the SR ZERO A to supply external devices.

The same ground connection (0VDC) must be used for all system components.

INSTRUCTIONS CONCERNING CONNECTION CABLES.

➔Wire size range: AWG 12...30, (solid/stranded) (UL).

➔Use 60/75°C copper (Cu) conductor only.

➔We recommend the use of separate power supplies for the safety relay and for other

electrical power equipment (electric motors, inverters, frequency converters) or other

sources of disturbance.

➔Cables used for connections longer than 50m must have a cross-section of at least 1mm2

(AWG16).

➔The path of the connection cables between the safety relay and the sensors, the connection

referring to the feedback contact must be different from that of other power cables.

Figure 1

SAFETY RELAY SR ZERO A

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PINOUT

TERMINAL

NUMBER

SIGNAL NAME

TYPE OF

SIGNAL

DESCRIPTION

Not used

0VDC

Power Supply 0VDC

INPUT1

Input

Safety input 1

INPUT2

Input

Safety input 2

K1 K2 FBK IN

Input

Feedback K1 K2 Input

K1 K2 FBK OUT

Output

Feedback K1 K2 Output

Not used

B NO1

Output

Safety relay B, contact 1 (N.O.)

B NO2

Output

Safety relay B, contact 2 (N.O.)

Not used

A NO1

Output

Safety relay A, contact 1 (N.O.)

A NO2

Output

Safety relay A, contact 2 (N.O.)

Table 1

CHECKLIST AFTER INSTALLATION

To guarantee the system perfect operation perform the following checks at start up and

at least every year:

OPERATION / CONTROL

COMPLETE

1. Verify the correct fixing of SR ZERO A to the Omega rail.

❒

2. Verify that all the cables are correctly inserted and the terminal blocks well screwed.

❒

3. Verify that the led (indicator) lights on correctly.

❒

4. Verify the positioning of all the sensors connected to SR ZERO A.

❒

SAFETY RELAY SR ZERO A

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Example of connection of the SR ZERO A module with

safety light curtain SAFEGATE S (low range operation)

Figure 2

Example of connection of the SR ZERO A module with AX / VX / VXL safety light curtain in

AUTOMATIC operation mode

Figure 3

SAFETY RELAY SR ZERO A

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Example of connection of the SR ZERO A module with AX / VX / VXL safety light curtain in

MANUAL operation mode

Figure 4

Example of connection of the SR ZERO A module with MXL safety light curtain in

AUTOMATIC operation mode

Figure 5

SAFETY RELAY SR ZERO A

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Example of connection of the SR ZERO A module with MXL safety light curtain in

MANUAL operation mode

Figure 6

Example of connection of the SR ZERO A module with EOS4X safety light curtain in

AUTOMATIC operation mode

Figure 7

➔Further details regarding connections can be found on each curtain technical manual.

SAFETY RELAY SR ZERO A

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CHARACTERISTICS OF THE OUTPUT CIRCUIT

For the output circuit, the safety relay 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 an appropriate fuse (depending on the

load). Check that load characteristics comply with the indications given in the table below.

Minimum switching voltage

18 VDC

Minimum switching current

20 mA

Maximum switching voltage

250 VAC

Maximum switching current

6 A (AC) / 6 A (DC)

STATUS INDICATORS

LED

COLOR

STATUS/COLOR

CONDITION

Green

ON with input activated

OFF

OFF with input not activated

Table 2

Figure 8

SAFETY RELAY SR ZERO A

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TECHNICAL DATA

SAFETY DATA

VALUE

STANDARD

Safety level

SIL 3

EN 61508:2010

SILCL 3

EN 62061:2005 / A2:2015

Cat.4

EN ISO 13849-1: 2015

Device lifetime

20 years

EN ISO 13849-1: 2015

Certifications

cULus, TÜV

Load

Number of Commutations

PFHd *

DCavg #

MTTFd #

(years)

PL #

CCF #

2A@230Vac

1 every 30s

1,71E-07

98,94%

27,04

80%

1 every min

8,74E-08

98,88%

54,05

80%

1 every hour

4,99E-09

92,16%

3022,39

80%

1 every day

3,68E-09

45,25%

23745,23

80%

0,5A@24VDC

1 every 30s

3,40E-07

98,97%

13,52

80%

1 every min

1,71E-07

98,94%

27,04

80%

1 every hour

6,39E-09

95,46%

1565,28

80%

1 every day

3,77E-09

62,11%

16296,27

80%

* EN 61508:2010, EN 62061:2005/A2:2015; # EN ISO 13849-1: 2015

ELECTRICAL PARAMETERS

VALUE

Power supply

24 20% VDC; PELV

Rated impulse between PELV and relay contacts

6 kV

Power requirement

1,5 W max

INPUT DATA

Inputs number

2 internal coil relays

Number of EDM input

1 NC contact

OUTPUT DATA

Number of safety output

2 N.O. contacts

Type

Relays with forced guided contacts

Max switching voltage

250VAC , 125 VDC, Overvoltage Category III

Max switching current

6A (AC), 6A (DC)

Max switching power

1500VA, 180W (85W if load voltage >30 VDC)

Max Response time

20ms

Mechanical service life

10 x 10E6

Electrical service life AC1 at 360 switchings/h

> 10E5

CONNECTIONS / OPERATION

Connections

16 Terminal blocks with protection

against reversal of polarity

Status indicator

Input status LED

Max. length of connections

100m

Operating temperature

-30...55°C

Max surrounding air temperature

55°C

Storage temperature

-30...70°C

Relative humidity

10%...95%

Maximum operating altitude

2000m

Vibration resistance (CEI EN 60068-2-6:2009)

+/- 1.5 mm 9...200 Hz

Bump resistance (CEI EN 60068-2-27:2012)

15 g (6 ms half-sine)

ENCLOSURE DATA

VALUE

Description

Electronic housing 16 pole, with locking latch mounting

Enclosure protection rating

IP 20

Terminal block protection rating

IP 2X

Fastening

Fast attachment to rail according to CEI EN 60715

Dimensions (h x w x d)

99mm x 22,5mm x 113,5mm

Weight

150g

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