Medva ECO240 BAC, Instruction Manual

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2
1
1
Control panel
Safety contact
Control panel
Safety contact
ANTI-CRUSHING SYSTEM
Fig.1
Fig.2
Fig.3
The anti-crush system offers great security throughout the gate’s path,
both when closing and opening.
PRESSURE SWITCH CONNECTION
To access the connection and regulation of the pressure switch remove
the screws located at the rear holding the cap of the pressure switch.
The pressure switch is a normally closed contact (NC), which opens
when the pressure regulated by the adjustment screw is exceeded.(Fig.
1 No. 1)
The system consists of two pressure switches (Fig.1), which are
responsible for controlling the circuit pressure of both manoeuvres
independently when opening and closing. These are connected in series.
(Fig.2-Fig.3). The connection of the pressure switch signal to the control
panel is made through the two-joint strip (Fig.1 No. 2) to the safety
contact inlet of the panel.
It is necessary to incorporate a limit switch in the closure, normally
open (NO) as indicated by the diagram in Fig.2. Its function is to
override the pressure switch when the gate reaches the end of its path,
and is exercising force on its frame. Its proper placement is essential
to prevent the gate from reversing the manoeuvre. This will be how
the motor will communicate to the control panel that it can increase
the pressure because it has reached the end of its path and it is not an
obstacle that must be released.
In order to be able to do without a limit switch when opening, it is
necessary for the panel to have the option that when the gate is opening
finds an obstacle, reverses the manoeuvre for one or two seconds so as
to release the obstacle and stop. If the panel does not have this option we
will need to place another limit switch (NO) in parallel when opening.
In this system, it is essential for the control panel to have an inhibition of
the pressure switch during the start of the closing manoeuvre. At start-
up, the motor requires an increase in force and this option allows an
increase in pressure avoiding an unwanted investment.
PHOTOCELL CONNECTION
When the control panel does not have an exclusive inlet for the photocell
we can connect it in series with the pressure switches. (Fig.3)
REGULATION
To increase sensitivity, turn it counter-clockwise, and to decrease
sensitivity, turn it clockwise. Turning will be done in 15-degree turns.
Handling the pressure switch according to the type of opening
- When the door opens inwards:
Opening adjustment Fig.1 pressure switch A (under the blue limiter)
Closing adjustment Fig.1 pressure switch B (under the red limiter)
- When the door opens outwards:
Opening adjustment Fig.1 pressure switch B (under the red limiter)
Closing adjustment Fig.1 pressure switch A (under the blue limiter)
IMPORTANT! It must be handled in accordance with current standard
UNE-EN 12453
Limit switch N.A Pr
essur
e
switch N.C
Pr
essur
e
switch N.C
Pr
essur
e
switch N.C
Pr
essur
e
switch N.C
Photocell
N.C
Limit switch
N.A