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• Before installing the automatic system read the instructions hereunder carefully.
• It is strictly forbidden to use the product VN.MT40V for applications other than indicated in this instruction
handbook.
• Show the user how to use the automation system.
• Give the user the part of the leaflet which contains the instructions for users.
• All Benincá products are covered by an insurance policy for any possible damages to objects and persons
caused by construction faults, under condition that the entire system be marked CE and only Benincá
parts be used.
This gear motor has been studied to activate industrial sectional doors and rolling gates without
counterweights.
Before installation, check the correct balancing (where provided) and the door sliding.
Check that the ropes, the springs and the parachuting system are in good conditions. For doors that have
not been installed recently, check also all the other parts subject to wear and tear. The above instructions are
essential for the safety of the system and the reliability of the operator.
The geared motor has been designed to directly activate the cable winding shaft of the door which must
feature 1" diameter (25.4mm) and should be provided of housing for the key. For cable winding shafts having
a different diameter, an adapter should be provided (item VN.A30 for diam. 30 shafts, item VN.A3175 for diam.
31.75 shafts, item VN.A40 for diam. 40 shafts).
To fit the unit proceed as follows:
• Make sure that the distance between the cable winding shaft and the surface to which the bracket should
be fitted ranges between 82 and 150mm (as per fig. 3).
• Weld or fit the bracket S with screws to the surface.
• Insert the feared motor in the cable winding shaft.
• Tighten the screws inserting the tightening key C first.
To calculate the movement speed of the door, proceed as follows:
V (door speed) = d (diam. of cable winding drum - m) x 3.14 x 24 = m/1'
It is possible to use the geared motor by extending the motion to the rope winding-up shaft by means of a
chain (item VN.RM). The motion can possibly be transmitted reduced or multiplied (item VN.RV) (fig. 4).
To calculate the movement speed of the door, proceed as follows:
V (door speed) = d (diam. of cable winding drum - m) x 3.14 x 24 x Z1 / Z2 = m/1'
The geared motor is equipped with 4 microswitches: 1 is the opening limit switch (red cam), 1 the opening
over-travel (blue cam), 1 closing limit switch (yellow cam) and 1 is at disposal of the accessories (black cam),
N.C. max. 3A, 24Vac/dc max. To adjust the cams proceed as follows (fig. 10):
• Put a screwdriver in the hole F to avoid the rotation of the shaft.
• Loosen the nut D to allow rotation of the cam with a very reduced resistance.
• Manually move the door until it is almost completely close and adjust the yellow cam.
• Repeat the operation while opening the door and adjust the red cam.
• Then position the blue cam so that it is activated slightly delayed with respect to the red cam.
• Power the automatic unit and operate it (if it is a closing operation, invert wires 1 and 3 of the motor power
supply, fig. 6 and 7) while adjusting the closing cam (yellow) with slight adjustments as per fig. 11.
• Slightly tighten nut D.
Warning
Operating limits and warnings
Installation
Adjustment of the limit switches
11
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