TANGO
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USE AND MAINTENANCE INSTRUCTIONS
The Tango limit switch is an electromechanical device for low
voltage control circuits (EN 60947-1, EN 60947-5-1) for use as
electric equipment on machines (EN 60204-1) in compliance with
the essential requisites of the Low Voltage Directive 2014/35/UE
and the Machine Directive 2006/42/CE.
The limit switch is designed for use in industrial environments
with even very severe climatic conditions (working
temperatures from -25°C to +70°C and is suitable for use
in tropical environments). The equipment is not suitable for
use in environments with a potentially explosive atmosphere,
in the presence of corrosive agents or high percentage of
sodium chloride (saline mist). Contact with oil, acids and
solvents may damage the equipment; avoid using them
for cleaning. The limit switches is not suitable for use in
environments with a potentially explosive atmosphere.
The Tango limit switch must be fastened through the holes
on the side of the case (12)*; in particular the top holes
are slots to facilitate fastening and adjustment of the limit
switch, which must be suitably position to ensure correct
impact on the drive rods (24). To prevent malfunctions or
problems; examine the technical documentation to view the
recommended impact points.
Turn the closing screws (1) and loosen the closure of the
rod holder (25, 21, 2), then you can move the rods to adjust
them; afterwards, tighten the closing screws (1) with a force
of 100cN m to ensure secure fastening of the rod holder.
We recommend adjusting the impact point of the rods (24)
by adjusting the fastening of the entire limit switch and not
simply moving the rods.
The switches (6) of the Tango are designed for the auxiliary
control of contacts or electromagnetic charges in general
(utilization category AC-15 in accordance with EN 60947-5-
1). The switches (6) have contacts with positive mechanical
opening operation (EN 60947-5-1). Do not connect more
than one phase for the switches (6). Never oil or grease the
switches (6).
To facilitate wiring the switches (6) the limit switches can
be removed from the case (12); after wiring, the switches (6)
must be replaced correctly in the case (12), then assemble the
cover (4) and tighten the screws (23) with a minimum force of
100cN m.
Installation of the limit switches should be done by
competent, trained personnel. The electric wiring must be
compliance with the regulations in force.
Before performing installation and maintenance of the limit
switches, disconnect the machine from the power mains.
Operations for installation and correct wiring of limit switch
- Fasten the limit switch securely to prevent malfunctions
during use of the device; to fasten it, use the holes on the
sides of the case (12); fasten the limit switch so that the
drive rods (24) function correctly, by examining the technical
documentation to identify the recommended point of impact;
adjust the rods (24), by turning the closing screws (1) on the
relative rod holder elements (25, 21, 2). Afterwards, tighten the
screws (1) with a force of 100 cNm.
- Introduce the multi-pole wire in the limit switch through
the wire clamp (11), strip the multi-pole cable for a length
- Wire the switches (6) as shown in the wiring diagrams on
each (6) (tighten the terminal screws with a torque of 0.6 Nm
(5.3 lbs/inch); insertability of wires into the switch terminals
equal to 2x1.5mm2– 1x2.5 mm2(UL (c)UL: use 60°C or 75°C
copper (CU) conductors)).
- After wiring tighten the wire in the wire clamp (11).
- Close the limit switch with its cover (4) with the closing
screws (20); applying a force of at least 100cN m.
Operations of routine maintenance
- Check the correct tightening of the closing screws (20) on
the cover (4).
- Check the conditions of the wires on the switches (6) (if
necessary, tighten the screws on the terminals).
- Tighten the multi-pole wire in the wire clamp (12).
- Check the conditions of the complete limit switch (25, 24, 21,
12, 4, 2).
- Check the fastening of the limit switch.
Any change to parts of the limit switch will invalidate the
the warranty null and void. In case of replacement of any part,
use only original replacements.
TER is not liable for damages caused by improper use of the
device and installation which is not made correctly.
*Please refer to the exploded drawing in the catalogue.
