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ENGLISH
- 36 -
12 - DETECTION OF OBSTACLES
(AMPEROMETRIC SENSOR, ENCODER,
SAFETY RIBBONS)
The presence of an obstacle that prevents the movement of the
door can be detected in several ways:
1. Amperometric sensor
2. Encoder
3. Safety ribbons
Regardless of the device that detected the obstacle, the reaction
of the unit depends on the value set for the parameter
OST.A
for
obstacles during opening and
OST.C
for obstacles during closing:
• If the value is
0.0”
, the port is simply stopped
• If the value ranges between
0.5”
and
4.5”
the door reverses
the movement for the time set
• If the value is
FULL
the door re-closes or re-opens completely.
m
Following detection of an obstacle during closure,
the door reopens and the behaviour of the power centre
depends on various parameters, with the following priority:
1.
If the clock mode is active (
MODE
=
OROL
), counting of the
pause time for automatic closure is activated.
2.
If the door is closed without withdrawing (
OST.C
=
0
),
or if closure after the obstacle is manual (
CH.OS
=
MAN
),
counting of the pause time for automatic closure is NOT
activated and the door will start moving again after the next
start-up command is given
3.
If closure after the obstacle is automatic (
CH.OS
=
AUTO
),
the centre will behave according to the settings of the
CH.AU
parameter
12.1 - AMPEROMETRIC SENSOR
The control unit detects the presence of an obstacle when the
current on the motor exceeds the value set for the parameters
SEN.A
(opening) and
SEN.C
(closing).
The value of these parameters is pre-set during the self-learning
procedure of the travel (Chapter 25.3)
If you want to disable this feature set the value to
0
.
12.2 - ENCODER
The unit detects the presence of an obstacle when the encoder
indicates that the motor is turning at a speed lower than the set
one (Chapter 18).
The sensitivity of the encoder must be set via the
S.ENC
parameter: the higher the value, the more the unit will be
responsive to small drops in speed. If you do not want the
encoder to detect obstacles, set to
0
.
12.3 - SAFETY RIBBONS
The unit detects the presence of an obstacle when a safety ribbon
is pressed.
The unit has two inputs for the ribbons, which can be
independently enabled and associated with different types of
function.
Connect safety ribbon 1 (COS1) to terminals
S7
and
S9
and
configure parameter
COS1
to activate entry
Connect safety ribbon 2 (COS2) to terminals
S8
and
S9
and
configure parameter
COS2
to activate entry
• If you set
AP
the operation of the ribbon is detected only
during opening and the unit will operate according to the
settings of the
OST.A
parameter
• If you set
CH
the operation of the ribbon is detected only
during closing and the unit will operate according to the
settings of the parameter
OST.C
• If you set
APCH
the operation of ribbon is detected during the
opening and closing:
- when opening the control unit will operate according to the
settings of the parameter
OST.A
- when closing the control unit will operate according to the
settings of the parameter
OST.C
m
WARNING:
• If you do not connect any ribbon to the terminal
S7
, the
parameter
COS1
must be set to
NO
.
• If you do not connect any ribbon to the terminal
S8
, the
parameter
COS2
must be set to
NO
.
S1 S2 S3 S4 S5 S6 S7 S8 S9
COS1
COS2
COS1
parameter
a
DEFAULT =
NO
(no function)
COS2
parameter
a
DEFAULT =
NO
(no function)
The control unit can operate with different types of ribbons;
depending on the type of ribbon used it is required to correctly set
the parameter
CO.TE
NOTE
: You can not use different types of ribbons on two COS1
and COS2 inputs.
a. Mechanical ribbons with normally closed contact
Set the parameter
CO.TE
with the value
NO
: not test is run
before the movements.
b. Optical ribbons
Set the parameter
CO.TE
with the value
FOTO
: before any
movement a functional test similar to that of photocells is
carried out. If you do not want the test to be run, set
NO
.
Connect the power supply of the optical ribbons following the
instructions described in chapter 11.2
c. Ribbon with resistive rubber
Set the parameter
CO.TE
with the value
RESI
: the unit is
expected to measure an impedance equal to 8.2 kohms, and
an alarm is triggered if a lower impedance (pressed ribbon) or a
higher impedance (interrupted wire) are detected, therefore it
is not necessary to run the test before the movements.
m
WARNING:
If you connect multiple ribbons to the same
terminal, the connection must be made in series, except in the
case of resistive ribbons which which must be connected in
parallel.