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Operating Instructions
Evaluation Unit CMS-E-BR
Electrical connection
Warning! In the event of a fault, loss of the safety
function due to incorrect connection.
The auxiliary contact 23/24 must not be used as
a safety output.
Lay the connecting cables with protection to
prevent the risk of short circuits.
Fusing of the power supply and the safety con-
tacts: Provide external contact fuse (3 A gG) for
relay outputs.
Caution! Risk of damage to equipment or malfunc-
tions as a result of incorrect connection.
All the electrical connections must either be
isolated from the mains supply by a safety trans-
former according to EN 61558-2-6 with limited
output voltage in the event of a fault, or by other
equivalent isolation measures.
This device is intended to be used with a Class 2
power source in accordance with UL 1310.
As an alternative a LV/C (Limited Voltage/Current)
power source with the following properties can
be used:
This device shall be used with a suitable isolating
source in conjunction with a fuse in accordance
with UL 248. The fuse shall be either rated max.
4 A and be installed in the max. 24 V/DC power
supply or it shall be rated 3.3 A and be installed
in the max. 30 V/DC power supply to the device
in order to limit the available current to comply
with the UL requirements. Please note possibly
lower connection ratings for your device (refer to
the technical data).
The devices are tested in accordance with UL 508
and CSA/C22.2 no.14 (protection against electric
shock and fire) and are intended for rail mounting
in the control cabinet.
They are not tested as safety components in the
context of the UL definition (e.g. for potentially
explosive atmospheres).
All electrical outputs must have an adequate
protective circuit for inductive loads. The outputs
must be protected with a free-wheeling diode for
this purpose.
The tightening torque for the screws on the connec-
tion terminals must be 0.5 ... 0.6 Nm.
If no read heads are connected to the plug-in ter-
minals provided in the evaluation units, the jumpers
supplied must be inserted in accordance with the
wiring diagram.
Safety in case of faults
Terminals A1 and A2 for connection of the power
supply and all outputs (safety and auxiliary contact)
are reverse polarity protected.
Setup
If the evaluation unit does not appear to function
when operating voltage is applied (green UB LED
does not illuminate), the unit must be returned
unopened to the manufacturer.
Check whether the safety contacts are being
switched (see LED displays) by opening and closing
the safety door.
LED displays
The LEDs Dx1 and Dx2 indicate whether actuator
and read head are correctly aligned in relation to
each other. The status of the safety contact cannot
be seen from the LEDs.
Function
LED
Operating voltage
U
OUT
Contacts 23/24 and 13/14 open
OUT
OUT
Contacts 23/24 and 13/14 closed
OUT
Read head x (x = 1...4)
Actuator in the actuating range
Dx1
NC contact in the read head is open
f
NO contact in the read head is closed
Dx2
f
Actuator not in the actuating range
Dx1
NC contact in the read head is closed
f
NO contact in the read head is open
Dx2
f
If the green and red LEDs light up simultaneously
f
(e.g. D11 and D22), the related actuator is not
fully in the actuating range.
If the actuators for all the connected read heads
f
are in the actuating range (or 2-pin jumpers have
been fitted in the evaluation unit), safety contact
13/14 and auxiliary contact 23/24 are activated
(the green OUT LED illuminates).
In the evaluation unit, the green LEDs are wired in
f
series in the following sequence: D11 - D21 - D31
- D41. This means that the green LED (e.g. D41)
can illuminate only if the upstream LEDs D11/D21/
D31 are also illuminated.
6
Service and inspection
No servicing is required. Regular inspection of
the following is necessary to ensure trouble-free
long-term operation:
Correct switching function
f
Secure mounting of components
f
Loose connections
f
In the event of damage or wear and tear, the dam-
aged system component must be replaced.
If the safety door is not frequently used, the system
must be subjected to a regular function test as part
of the inspection schedule.
EU declaration of conformity
The declaration of conformity is part of the operating
instructions, and it is included as a separate sheet
with the unit.
The original EU declaration of conformity can also
be found at: www.euchner.com
Color
State
Service
green
ON
B
red
ON
If servicing is required, please contact:
green
OFF
EUCHNER GmbH + Co. KG
red
OFF
Kohlhammerstraße 16
green
ON
70771 Leinfelden-Echterdingen
Germany
green
ON
Service telephone:
red
OFF
+49 711 7597-500
green
OFF
E-mail:
support@euchner.de
red
ON
Internet:
www.euchner.com
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