COMEPI SM Series Quick guide

Use instructions –Limit switch with rope for emergency stop 010 ISTR 02 SC 1010-01
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DDC 03A –Safety limit switches with rope series SM-SDM-SBM-SCM
The COMEPI limit switches with rope for emergency stop are devices designed
and made in compliance with the international IEC regulations and the EN
European standards. This device is used for controlling emergency stops along
the perimeter of a machine or a production line, in compliance with standard
EN 60947-5-5. Being a protection equipment for operators, its incorrect
installation or tampering can damage people, even seriously. The device
installation must be carried out according to the regulations in force by
authorized staff only. Make sure the switch works properly before starting the
machine and periodically check the correct operation of the equipment.
Installation precautions
Before starting the machine, check the proper operation of the safety system.
Periodically check the correct operation of the device and the rope pre-
tensioning.
The device installation must be carried out by authorized and qualified staff
only.
The device use must be limited to the applications meeting the regulations
requirements.
The device installation and the safety system design must be carried out only
by people knowing the regulations in force.
The device installation and the safety system design must be carried out in
compliance with the regulations in force and with the indications contained in
these instructions.
In case of doubts or special applications, please contact COMEPI Technical
Support. Do not install in places with continuous sudden temperature changes
and condensate formation.
In case of ambient temperature increase, check the correct operation of the
device and its correct pre-tensioning.
Before any painting operation, cover the identification label.
Do not install in places where there are flammable dusts or gases.
Do not install in places with strong vibrations; impacts and vibrations can
prevent the switch correct operation.
Use only proper accessories supplied by COMEPI, suitable for the model used;
otherwise warranty could be void.
Install the rope so that it can be easily reached by the operator without
representing a danger for him.
Do not exceed the distance limits indicated in this document.
If the rope or the accessories are damaged or worn, replace them. In case the
device is damaged, replace the whole device to ensure safety.
Replace the equipment after exceeding the mechanical durability limit.
During wiring, keep load under the value of the use category.
Check that safety contacts are connected to a protection fuse.
Before reaching the switch contacts, make sure the device is not supplied with
power.
Tighten the screws with the specified tightening torques (0.5Nm plastic, 0.8Nm
metal).
The device must not be disposed of following special procedures, just comply
with the regulations in force in the country where the device is used.
Use limits
Use the switch complying with the regulations in force within its operation
limits and following the instructions. The manufacturer is not to be held
responsible for damages if: the device was not used properly, the installation
accessories were not used properly, instructions were not followed, assembly
and maintenance operations were carried out by unauthorized or unskilled
staff, functional tests were omitted.
This device complies with the following Directives:
Low Tension Directive 2014/35/EU
According to standard EN 60947-5-1
Machinery Directive 2006/42/EC
According to standard EN ISO 60947-5-5
Directive RoHS 2002/95/EC
Approvals
cULus according to standard UL508 –IMQ according to EN 60947-5-1 (for the
complete list of the certified products, please contact COMEPI Technical
Support).
Use and operation examples
This kind of device is typically used to control emergency stop along the whole
perimeter of a machine or a production line. The pre-tensioning of the device
brings it to a rest position with contacts in their normal condition. The pre-
tensioning condition is reached when the green strip on the shaft is completely
visible. The device is enabled by pulling the rope or when the rope is no longer
tensioned. This causes the switching of contacts and the reset mechanism trip.
The machine will remain in the stop condition until an operator restores the
safety condition by acting on the blue reset piston with an action different from
the one which caused the device enabling. To test the proper operation of the
equipment, check the correct pre-tensioning of the rope and generate the stop
signal by pulling it. The machine emergency stop shall be immediately enabled
and the machine cannot be restarted before the device reset. The device must
not be used as mechanical lock or for a function beyond its intended use.
Safety warnings
Safety switches protect operators. An incorrect installation as well as the
tampering of the device and of its safety system can cause even extremely
dangerous situations. The correct operation of the safety system must be
periodically checked and any malfunctions must be immediately solved to avoid
dangerous situations for operators and machines.
Technical data
Casing
Painted metal casing
Rated impulsive withstand voltage
Uimp
6 kV
Room temperature during operation
-25°C … +70°C
Conventional thermal current Ith
10A
Environmental designation
Type-1 enclosure
Operational current AC-15
24V
10A
120V
6A
400V
4A
Protection against
electrical shocks
Class I (metal casing)
Operational current DC-13
24V
6A
125V
0.55A
250V
0.4A
Degree of protection IP
IP66 (metal casing)
Maximum switching frequency
3600 cycles/hour
Rated insulation voltage
Ui
500V (400V X12P-X21P-W03P)
Load factor
0.5
Use categories
according to UL508
A600 –Q600 (A300-Q300 X12P-X21P-W03P)
Resistance between contacts
25 mΩ
Connecting
terminals
Screws M3.5 with cable clamp (M3 for 3 poles
contancts type)
Terminal marking
According to IEC 60947-5-1
Dimensions of connecting
cables*
0.34 … 1.5 mm²
Mechanical durability
500.000 operations
B10d
1 million operations
*Only use copper conductors 60/70°C, AWG14-18, stranded and solid conductor. Terminals maximum tightening torque 0.8Nm

Use instructions –Limit switch with rope for emergency stop 10 ISTR 02 SC 1010-01
Maximum distances for installation
Models with axial operation (K9800 –K9900) Models with horizontal operation (K9200 –K9300 –K9400 –K9500)
Procedure for a correct installation
1) If needed, adjust the position of the reset knob by unscrewing the four
head fastening screws and rotating the head in the desired direction.
Then lock the screws with a tightening torque of 0.8 Nm / 7 lb. In. (max.
0.9 Nm).
2) Fix the switch and pull the rope connected to it so that the green OR on
the limit switch shaft is positioned near the red end of the limit switch
(Pict.1).
3) Pull the reset knob so as to close the safety contacts of the limit switch.
4) The contacs inside the limit switch will change their state when the
rope is pulled or in case the rope is no longer in the pre-tensioning
condition.
5) Check the correct operation of the switch before starting the machine.
…
P0Rest position:
actuator position when no external force is applied.
0 Initial position:
actuator position with the operating
mass force F applied.
PPPositive opening position:
actuator position when there is a positive opening.
L Maximum stroke position:
maximum stroke reachable by the actuator.
C0Pre-tensioning ideal stroke:
distance between the rest position P0and
the initial position.
CP Positive opening stroke:
minimum stroke of the actuator, from the initial
position 0, to ensure the positive
opening of contacts NC.
CES, CES’
Stroke for emergency stop and hooking position.
CLMaximum stroke:
distance between 0 and the maximum stroke L.
CL’ Distance between the initial position C0 and the
rest position P0 in case of cable break.
Contact block terminals
Closing cover
Assembling head
Screws
M3.5 +/- pozidriv 2
Ø3 +/- pozidriv 1
Ø3 +/- pozidriv 1
Viti
Tightening torque
Nm / lb. in.
RECOM. MAX
RECOM. MAX
RECOM. MAX
Metal limit switches
0.8 / 7 0.9
0.8 / 7 0.9
0.8 / 7 0.9