REER SR Zero A Safely Relay Module

OVERVIEW

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.

important personal safety warning

• 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

INSTALLATION AND ELECTRICAL CONNECTIONS

SR ZERO A is provided with terminal blocks for the electrical connections.
The unit provides 16 terminals

IMPORTANT

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

IMPORTANT

• 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.

PINOUT

TERMINAL NUMBER| SIGNAL NAME| TYPE OF SIGNAL| DESCRIPTION
---|---|---|---
1| –| –| Not used
2| –| –| Not used
3| –| –| Not used
4| 0VDC| –| Power Supply 0VDC
5| INPUT1| Input| Safety input 1
6| INPUT2| Input| Safety input 2
7| K1 K2 FBK IN| Input| Feedback K1 K2 Input
8| K1 K2 FBK OUT| Output| Feedback K1 K2 Output
9| –| –| Not used
10| –| –| Not used
11| B NO1| Output| Safety relay B, contact 1 (N.O.)
12| B NO2| Output| Safety relay B, contact 2 (N.O.)
13| –| –| Not used
14| –| –| Not used
15| A NO1| Output| Safety relay A, contact 1 (N.O.)
16| A NO2| Output| Safety relay A, contact 2 (N.O.)

CHECKLIST AFTER INSTALLATION

To guarantee the system perfect operation perform the following checks at start up and at least every year:

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.| ❒

Example of connection of the SR ZERO A module with safety light curtain SAFEGATE S (low range operation)

Example of connection of the SR ZERO A module with AX / VX / VXL safety light curtain in AUTOMATIC operation mode   Example of connection of the SR ZERO A module with AX / VX / VXL safety light curtain in MANUAL operation mode Example of connection of the SR ZERO A module with MXL safety light curtain in  AUTOMATIC operation mode Example of connection of the SR ZERO A module with MXL safety light curtain in MANUAL operation mode Example of connection of the SR ZERO A module with EOS4X safety light curtain in AUTOMATIC operation mode IMPORTANT : Further details regarding connections can be found on each curtain technical manual.

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.

STATUS INDICATORS

TECHNICAL DATA

__

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| d| 80%
1 every min| 8,74E-08| 98,88%| 54,05| e| 80%
1 every hour| 4,99E-09| 92,16%| 3022,39| e| 80%
1 every day| 3,68E-09| 45,25%| 23745,23| e| 80%
__

0,5A@24VDC

| 1 every 30s| 3,40E-07| 98,97%| 13,52| d| 80%
1 every min| 1,71E-07| 98,94%| 27,04| d| 80%
1 every hour| 6,39E-09| 95,46%| 1565,28| e| 80%
1 every day| 3,77E-09| 62,11%| 16296,27| e| 80%
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

DIMENSIONS   INDICATIONS AND INFORMATION FOR ENVIRONMENTAL PROTECTION

For Countries in the European Union:
Pursuant to the Directive no. 2012/19/EU on waste electrical and electronic equipment (WEEE).
The crossed out wheelie-bin symbol on the equipment or its packaging means that when the product reaches the end of its useful life it must be collected separately from other waste.
Proper separate collection of the discarded equipment for later environment- friendly recycling, processing, and disposal, helps to avoid any negative impact on the environment and health and encourages re-use and recycling of the materials the equipment is made of.
In each individual Member State of the European Union this product is required to be disposed of in accordance with Directive 2012/19/EU as implemented in the Member State where the product is disposed of.
For further information please contact ReeR or your local dealer.

WARRANTY

REER warrants that each SR ZERO A unit in new ex-factory condition, in conditions of normal use, is free of defects in the materials and of manufacturing defects for a period of 12 (twelve) months.
In this period, REER undertakes to eliminate any faults in the product through repair or replacement of the faulty parts, completely free of charge as regards material and labor.
However, REER reserves the right to replace the entire faulty appliance with another equivalent appliance or with the same characteristics instead of repairing this.
Validity of this warranty is regulated by the following conditions:

•  The user must inform REER of the fault within twelve months from the date of delivery of the product.
• The appliance and its components must be in the conditions in which they were delivered by REER.
•  The serial numbers must be clearly legible.
•  The fault or defect has not been caused directly or indirectly by:
  o Improper use;
  o Non-compliance with instructions for use;
  o Carelessness, inexperience, incorrect maintenance;
  o Repairs, modifications, adaptations not carried out by REER personnel, tampering, etc.;
  o Accidents or impacts (also due to transportation or causes of force majeure);
  o Other causes not to be ascribed to REER.

Repairs will be carried out at the REER laboratories to which the material must be delivered or dispatched: transport risks and the risks of any damage or loss of the material during shipment are the responsibility of the user.

All products and components replaced become the property of REER.
REER does not recognize any other warranties or rights except for those specifically described above; therefore, no claims for damages may be submitted for expenses, interruption of business or other factors or circumstances in any way related to failure of the product or of one of its parts.

Precise, complete compliance with all the rules, instructions and prohibitions indicated in this handbook is an essential requirement for correct functioning of the safety relay.
REER s.p.a. therefore declines any responsibility for all and anything resulting from failure to comply, even partially, with such indications.

EC DECLARATION OF CONFORMITY

Documents / Resources

| REER SR Zero A Safely Relay Module [pdf] Installation Guide
SR Zero A, Safely Relay Module
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References

• ReeR - Manuals

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