ASO Elmon 32-242 User Manual

Technical Document Ver 2.0
Valid: 01/01/2018

GENERAL & OPERATIONAL INFORMATION

ELMON RAIL 32-242

ELMON RAIL 32-242

The ELMON relay is designed for use on hinged gates, barriers, shuers and machine solutions. The relay evaluates pressure sensors fied to
the systems, including safety contact mats, safety contact edges and safety bumpers, reducing the risk of crush and shearing points.

Two separate sensor circuits can be connected to the SK 32 switching unit, whereby both act on one switching output.

Monitoring of the standby current is made possible by an integrated terminating resistor in the sensor circuit. If the specified standby current
is flowing, the output relay is activated and the switching contact is closed. If a sensor is actuated or a sensor circuit is interrupted, the relay
switching contact opens.

The relay is designed in accordance with EN ISO 13849-1:2008 for Category 3. To comply with Category 3 for compliance with category 3, the
safety output is set up redundantly with two independent switching elements.

The monitoring state of the sensors and the applied operating voltage are indicated
by LEDs.

In the event of a fault alarm, all safety outputs are inactive.

PROPER USE

The switching device can only fulfill its safety-relevant task, if it is used as intended
within specifications.

The intended use of the switching device is the use as a protection system in

Sensor

Channel 1

Rref

Rref

Uref

+Ub

+Ub

Rel

Stop

Channel 1

connection with safety contact mats, safety bumpers and safety contact edges
with 8.2 kΩ resistance for steady-state current monitoring.

Sensor

A different use or any use going beyond the intended use is not within specifications.

The manufacturer does not accept any liability for any damage arising from use

Channel 2

Uref

Rel

Stop

Channel 1

not within specifications.

Any use for special applications requires prior release by the manufacturer.

The use of the safety relays at heights 2000m above sea level is not approved.

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24V AC/DC

ELMON rail 32-242 Block circuit diagram

01

Technical Document Ver 2.0
Valid: 01/01/2018

SIGNAL DISPLAYS

ELMON RAIL 32-242

DEVICE OVERVIEW

LED POWER (green)

Operation mode (on) - OK

Fault alarm (pulse) - see error diagnostics

LED CHANNEL 1 (red)

Sensor activated (on) - OK

Sensor circuit broken (flashes rapidly) - See error diagnostics

Fault self-lock (flashes slowly) - See error diagnostics

LED CHANNEL 2 (red)

Sensor activated (on) - OK

Sensor circuit broken (flashes rapidly) - See error diagnostics

Fault self-lock (flashes slowly) - See error diagnostics

If there is no fault alarm, the operating state is shown via the LED Power (on). When signaling a fault alarm the
number of pulses emied indicates the nature of the fault:

Pulse Error message diagnostics

1 Supply voltage outside the available range - 24v AC/DC +/- 10%

2 Output control Stop Channel 1 - faulty

3 Output control Stop Channel 2 - faulty

4 Data transfer between micro-controllers faulty - Replace unit

5/6 Error in testing signal input (Channel 1 / Channel 2) - See error diagnostics

CONNECTION TERMINALS

(Not allocated)Pin 1 2

Pin 3 11

Pin 3 10

Signal input Channel 1

Signal input Channel 2

6

7

8

5

4

Pin 4 5

Pin 7 8

Pin 8 9

Relay output to Channel 1 control

Relay output to Channel 2 control

Supply voltage 24V AC/DC

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10

11

2

1

02

Technical Document Ver 2.0
Valid: 01/01/2018

ELMON RAIL 32-242

MECHANICAL MOUNTING

The switching unit must be mounted correctly:

• In a dust-protected and moisture protected
switch cabinet or casing.

• For use in an environment with contamination
level 2.

• With a protection type of at least IP54.

• On a 35 mm DIN support rail according to EN
50 022.

The switching unit must not be installed in the
immediate vicinity of an intense heat source.

The switching unit can be installed in horizontal or
vertical positions.

The unit must not be operated in areas with major
temperature changes.

The products manufactured by ASO are exclusively
intended for commercial use (B2B). At the end of
use, the products must be disposed of according to
all local, regional and national regulations. ASO is
also happy to take back the products and disposes
of them properly.

ELECTRICAL CONNECTION

Connection to the wrong terminals may damage the relay.

Wiring laid in the open or outside the control box must be
properly protected.

The signal wiring may not be connected parallel to the motor
wiring or other power wiring. The limits shown in the “Technical
Data” for the supply voltage and relay switching capacity must
be observed.

Supply Voltage
The supply voltage is to be connected to the terminal pair 8,9

24 V AC/DC +/- 10%. The supply wiring to the relay must be

protected by a suitable circuit breaker. The supply voltage must
meet the requirements for low voltage protection (SELV).

Sensor Connection

Connect the sensor for Channel 1 to the terminal pair
3,11. Connect the sensor for Channel 2 to the terminal pair 3, 10.

If a channel is not used, it must be fied with an 8.2 kΩ
resistance.

CONNECTING MULTIPLE SENSORS PER SENSOR CIRCUIT

One or more sensors can be connected to sensor input. For this purpose, the individual sensors are connected in series according to
figure 1.

Safety edges SENTIR edge:

Up to five SENTIR edge may be connected in series. The maximum total length oft the SENTIR edge shall not exceed 100m.
The length of one SENTIR edge may be up to 25 m. The total cable length oft the in series connected SENTIR edge must not exceed 25

m.

Safety bumper SENTIR bumper:

Up to five SENTIR bumper may be connected in series. The maximum total length oft the SENTIR bumper shall not exceed 15m. The
length of one SENTIR bumper may be up to 3 m.
The total cable length oft the in series connected SENTIR bumper must not exceed 25 m.

Safety contact mat SENTIR mat:

Up to ten SENTIR mat may be connected in series. The maximum total area shall not exceed 10 m2.
The maximum size of an SENTIR mat is 1350 x 2350 mm. The total cable length oft the in series connected SENTIR mat must not exceed
25m.
Before connecting the sensors that are connected in series, it is recommended that the resistance value of the arrangement is to be
measured. The resistance must be 8.2 kΩ ± 500 Ω when the sensor is inactive and must not exceed 500 Ω when it is active.

ASO sensors must not be connected in parallel.

SENSOR 1 SENSOR 2 SENSOR 3

Opening

Figure 1: Connection of multiple sensors; in this example: Safety Contact Edge

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03

ELMON RAIL 32-242

Technical Document Ver 2.0
Valid: 01/01/2018

ERROR DIAGNOSIS

If the wiring and connecting up of the supply voltage is correct, only the green LED Power should light up. If the red LED lights up there is a
fault in the system, which can be isolated with the aid of the LED.

LED Error Error correction

Green LED

Power

does not light up

Red LED

Channel 1 / Channel 2

lights up

Green LED

Power

flashes cyclically (pulse)

Red LED

Channel 1 / Channel 2

flashes rapidly

Supply voltage absent, too low

or wrongly connected.

The relevant sensor

is recognised as activated.

6 pulses from power LED -

this code can be caused by a

number of issues

Sensor circuit broken, sensor

not connected, connected

incorrectly or faulty

* If the fault is not in the

wiring, the functioning of the

electronics may be checked
by fiing an 8.2 kΩ resistance
to the safety input on the relay.

If the electronics then work

properly, the safety device must

be tested with an ohmmeter.

For this the connection

between the safety device and

the relay must be disconnected

and connected to an ohmmeter.

With an inactivated safety

device the resistance should

be 8.2 kΩ ± 500 Ω. If the

safety device is activated, the

resistance should not exceed

500 Ω.

Test connections and supply voltage:

- 24 V AC/DC to terminals 8 9, tolerance range: ±10%

• Check connections of the relevant sensors
(pinched wiring, brile wiring etc.)

• Check sensor *

• SK relay has been housed / positioned next to high EMF I.E. large
transformer.

In some installations, a separate cabinet may not have
been fied to house other electrical components. This may
result in the SK relay sharing the same housing as the mains
transformer for the motor. In some cases this has caused the
circuitry of the relay to fail. Remove the relay from the motors
housing and reset the power to check for improvement.

• Cabling has been shared with DC voltage apparatus which is
causing interference.

Check that the safety edges are not sharing the same cabling /
conduits as anything which may be carrying a DC voltage. This
may result in the static edge inputs (3,10 & 3,11) having a back
feed of interference which the controller cannot cope with.

• 8.2KOhms on input

Before making any other checks, the first task required for you
to do is meter the Ohms measured at the relay inputs across
terminals 3 & 10 (Close edge input) and 3 & 11 (Opening edge
input). These should be reading around 8K2Ohms. If they are
reading significantly more or less than this value, then this
will indicate the reason for the LED to be lit on the relay. The
acceptable switching tolerances of this relay measure from
5Kohms up to 12Kohms. Anything outside of these values will
result in the inputs relay opening and the relative LED showing
lit on the front of the ISK71-242.

If you are not reading 8K2Ohms and you have a series of safety
edges wired into that circuit, then you will need to deduce which
edge is causing the problem. The quickest fault finding means to
achieve this is by testing each edge in series until you find 8K2.
If you do not find this value at all, then you know that there is an
issue with the end of line edge which will need to be addressed.

• Water within a safety edge

Check all drainage holes have been cut at the boom of the
vertical edges and either side of the horizontal edges.

• Damaged edge / earthed connections

Check to ensure no cables have been wearing on joints where
movement may incur or in junction boxes which may have
other wiring in place. Carry out a full inspection of each edge to
ensure no signs of obvious damage.

• Cuts / Rips on the edge

Check that all edges have no obvious visible signs of damage /
vandalism. If the safety edge has any short or broken contact,
the relay will read 0.0 Ohms and the corresponding input LED
will be lit.

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Technical Document Ver 2.0
Valid: 01/01/2018

Supply Voltage

ELMON RAIL 32-242

TECHNICAL DATA

Low Voltage:

Input Power

Ensuring low
voltage (external)

U

E

I

E

I

max

P

E-max

P

E-max

125mA
125mA

Terminal Resistance of the SCEs

R

nominal value

upper switching point

lower switching point

nom

R

AO

R

AU

Safety Relay

Nominal current DC
Nominal current AC
Mechanical life-time

24V AC/DC ± 10%

85mA

180mA (100ms)

3 W 24 V DC

3 VA 24 VDC

Medium acting fuse

Flink can be used

alternatively

= 8,2 kΩ

> 12,0 kΩ

< 5,0 kΩ

3 A (30 V DC)

3 A (30 V AC)

6

actuations

>10

82

26

84

38

Safety Relay Switching Times

Switching off delay <12ms

Turn-off time 500ms (ELMON rail 32-242)

100ms (ELMON rail 32-242 K)

(Power on 700ms)

Assembly
Housing
Dimensions (HxWxD)

Housing
Housing (incl. plug in socket)

Protection Class
Weight
Temperature Range
Connection Cable cross-section
Certifications

Electronics
Electromechanics

EC type-examination no.:

44 205 12 399386

Certificate no.:

44 780 12 399386

Test report no.:

12 205 399386-000

Plug base for 35 mm DIN snap-on rail mounting

11-pin DIN plug-base housing with plug base for 35 mm mounting rail (DIN rail)

82 x 38 x 84 mm

82 x 38 x 110 mm

IP20
225g

-25ºC to + 55ºC

Single or fine-stranded cable 0.75 -1.5mm

DIN EN ISO 3849-1:2008 Category 3 PL e

MTTFd 170 years, DC 91%

MTTFd 1616 years, DC 99 %

B10d 1000000

MTTFd 190 years (Nop 52560)

2

All voltages connected to the switching unit must be safely isolated

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