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Operating Instructions
Enabling Switch ZSM
The parameters for this connection must be config‑
ured in the safe evaluation unit to suit the switching
contacts chosen and their wiring. For this purpose
use the appropriate parameters:
Dual‑channel equivalent evaluation
f
Both contacts are closed at the same time in the
enabling position (position 2)
Dual‑channel antivalent evaluation
f
One contact is open in the enabling position (po‑
sition 2), the second closed
Discrepancy time
f
Activate the discrepancy monitoring. Because the
two contacts never switch exactly simultaneously,
you must specify a time within which simultaneity
applies. A time of 3 s has proven appropriate for
electromechanical contacts.
Resetting after fault detection
f
Select the parameters such that after a fault
the enabling switch is automatically reset if both
contacts were in the open position (for equivalent
contacts) or one contact was open and the other
closed (for antivalent contacts) and they are then
placed again in the correct position for enabling.
This action can be achieved by releasing and
pressing again the enabling switch.
This automatic reset is important above all if an
enabling switch is to be used for an extended pe‑
riod. Often position 2 (enabling) is only left a little
due to fatigue of the operator's hand or thumb. In
this situation, only one of the contacts signals a
release, the other remains in the enabling position.
The control system interprets this situation as
an enabling switch fault. Now it is helpful if it is
possible to continue working by simply releasing
and pressing again.
Should this not be possible, to some extent the
fault can also be automatically acknowledged by
the control system by means of the programming.
In any case, please ensure that release is detected
unambiguously (both contacts in position 1 ...
again) to rule out any faults in the wiring!
Hazards due to crushing or cutting of the connection
cable must be prevented by suitable measures.
These include:
Protection of the connecting cable against inad‑
f
missible loads (e.g. crushing, shearing) by means
of suitable laying.
Usage of an evaluation unit that makes it possible
f
to monitor for short circuits and the simultaneity
of the channels.
Usage of cables with individually screened cores.
f
These screens are to be connected to the ma‑
chine's earthing system so that cable short circuits
can be detected and the control system shut down
immediately by the triggering of the short circuit
protection.
Notes on
For use and operation as per the UL requirements,
a power supply with the feature for use in class 2
circuits must be used.
Functional check
WARNING
Danger of fatal injury as a result of faults in instal‑
lation and functional check.
Before carrying out the functional check, make
f
sure that there are no persons in the danger
zone.
Observe the valid accident prevention regula‑
f
tions.
Check the enabling switch by means of a functional
check (enabling only in position 2). Check that there
is no enable function in position 2 after reaching
position 3 and releasing again.
Depending on the version: check the integrated
functions, such as stop button, key‑operated rotary
switch, LEDs, etc.
Inspection and service
WARNING
Danger of severe injuries due to the loss of the
safety function.
If damage or wear is found, the complete device
f
must be replaced. Replacement of individual
parts or assemblies is not permitted. The device
may be repaired only by the manufacturer.
Check the device for proper function at regular
f
intervals and after every fault.
Inspection of the following is necessary to ensure
trouble‑free long‑term operation:
correct switching function
f
damage, heavy contamination, dirt and wear
f
sealing of cable entry
f
loose cable connections or plug connectors.
f
Information: The year of manufacture can be seen
in the bottom, right corner of the type label.
Disposal
Pay attention to the applicable national regulations
and laws during disposal.
EC 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 EC 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
Germany
Service telephone:
+49 711 7597‑500
Fax:
+49 711 753316
E‑mail:
support@euchner.de
Internet:
www.euchner.com
5
Technical data, general
Parameter
Value
Material
Housing
PA
Enabling switch
CR
Grip/seal
TPE
Degree of protection
IP54
acc. to IEC 60529
Ambient temperature
‑5 ... +60 °C
Degree of contamination
(external, according to
3 (industrial)
EN 60947‑1)
Enabling switch switching
3 changeover contacts
contacts
Mechanical life
1 x 10
operating cycles
6
Utilization category
acc. to IEC 60947‑5‑1
DC13 U
(for enabling switch S4)
Short circuit protection
2 A gG
according to IEC 60269‑1
1)
Actuating force
See Figure 2
Weight
Approx. 1.1 kg
Cable resistance
≥ 145 W/km
Conductor cross‑section
0.14 mm
Cable length
5 m
Rated impulse withstand
U
= 1.5 kV
imp
voltage
Rated insulation voltage
U
= 250 V
i
Conditional short‑circuit current 100 A
Reliability values acc. to EN ISO 13849‑1
B
1 x 10
5
10D
1) In case of deviating cable lengths, the short circuit protection must
be dimensioned accordingly and checked.
Technical data, components
Emergency stop
Value
Standard
EN ISO 13850 / EN 60947‑5‑5
Utilization category
DC‑13 U
acc. to IEC 60947‑5‑1
B
0.1 x 10
6
10D
Selector switch
Output code
See data sheet
Switching voltage, max.
25 V AC/DC
Breaking capacity max.
0.2 VA
Key‑operated switch
Switching voltage, max.
30 V AC/DC
Switching current, max.
0.25 A
Pushbutton
Switching voltage, max.
30 V DC
Switching current, max.
0.1 A
Rotary potentiometer
Resistance
4.7 kΩ
Actuating torque
0.5 ... 3.5 Ncm
Single‑color LED indicator
Housing
Chrome‑plated
Operating voltage
24 V
Color
Yellow or red
Two‑color LED indicator
Forward current typ.
0.02 A
Voltage red
1.85 V
Voltage green
2.2 V
Mini joystick
Utilization category
DC‑13 U
acc. to IEC 60947‑5‑1
= 24 V I
= 1 A
e
e
2
= 24 V I
= 3 A
e
e
= 24 V I
= 0.3 A
e
e
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