6
Operating Instructions
Evaluation Unit CMS-E-ER
Connection of CMS read heads
f
If the actuator is moved out of the operating
distance, it is ensured that safety contacts 13/14
and 23/24 and auxiliary contact 31/32 switch only
when the actuator is moved back into switch-on
distance s
ao
after having exceeded the switch-off
distance (see combination options table).
f
If the actuator is moved slowly toward the read
head in lateral approach direction Z, the evaluation
unit changes to the blocked state. To cancel the
blocked state, the actuator must again be moved
beyond the switch-off distance.
Mounting
Caution! The evaluation unit must be mounted
in a control cabinet with a minimum degree of
protection of IP 54. A snap-in element on the rear
of the device is used for fastening to a mounting
rail. If several evaluation units are mounted side
by side in a control cabinet without air circulation
(e.g. fan), a minimum distance of 10 mm must
be maintained between the evaluation units. This
distance enables the heat from the evaluation unit
to dissipate.
Caution! Risk of damage to equipment as a result
of incorrect installation. Read heads or actuators
must not be used as a mechanical end stop. Fit
an additional end stop for the movable part of the
safety guard.
Important! From the assured switch-off distance
s
ar
, the safety outputs are safely shut down. If the
actuator is installed flush, the switching distance
changes as a function of the installation depth and
the safety guard material.
Note the following points:
Read head and actuator must be easily accessible
for inspection and replacement.
The switching operation must be triggered only by
the specific actuator designated for this purpose.
Read head and actuator must be fitted so that:
f
when the safety guard is open up to the distance s
ar
(assured switch-off distance), a hazard is excluded.
f
the actuator is positively mounted on the safety
guard, e.g. by using the safety screws included.
Tighten the screws with a torque of max. 0.5 Nm.
f
they cannot be removed or tampered with
using simple means. Pay particular attention to
EN ISO 14119: 2013, section 7, regarding the
possibilities for bypassing an interlocking device.
Electrical connection
Warning! In case of an error, loss of the safety
function through incorrect connection.
The auxiliary contact 31/32 must not be used as
a safety contact.
Lay the connection cables with protection to
prevent the risk of short circuits.
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.
For use and operation as per the
require-
ments, a power supply with the feature “for use
in class 2 circuits” must be used. The same
requirement applies to the safety outputs. Alter-
native solutions must comply with the following
requirements:
a) Electrically isolated power supply unit with a
max. open-circuit voltage of 30 V/DC and a limited
current of max. 8 A.
b) Electrically isolated power supply unit in combi-
nation with fuse as per UL 248. This fuse should be
designed for max. 3.3 A and should be integrated
into the 30 V/DC voltage section.
The devices are tested in accordance with UL 508
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 0.6 … 0.8 Nm.
If no read heads or other electromagnetic safety
switchgear is connected to the plug-in terminals
provided in the evaluation units, the jumpers supplied
must be inserted in accordance with the connection
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.
Fusing of the power supply and the
safety contacts
f
Provide external contact fuse (4 A gG fuse) for
relay outputs.
Setup
If the evaluation unit does not appear to function
when operating voltage is applied (green Power
LED does not illuminate), the unit must be returned
unopened to the manufacturer.
Check whether the safety contacts are switched by
opening and closing the safety guard.
LED indicators
The LEDs K1 and K2 indicate whether actuator and
read head are correctly aligned in relation to each
other. The status of the safety contacts cannot be
seen from the LEDs.
Function
LED
Color
State
Operating voltage on
Power
green
ON
Operating voltage off
OFF
Contacts 13/14, 23/24
open and 31/32 closed
K1
K2
green
green
OFF
OFF
Contacts 13/14, 23/24
closed and 31/32 open
ON
ON
Service and inspection
No servicing is required. Regular inspection of
the following is necessary to ensure trouble-free
long-term operation:
f
correct switching function
f
secure mounting of components
f
loose connections.
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
Service
If service support is required, please contact:
EUCHNER GmbH + Co. KG
Kohlhammerstraße 16
70771 Leinfelden-Echterdingen
Service telephone:
+49 711 7597-500
Fax:
+49 711 753316
E-mail:
[email protected]
Internet:
www.euchner.com
