Operation Of The Safety Devices - King gates Star MM 224 Instruction Manual

11 - OPERATION OF THE SAFETY DEVICES

11A - CLOSING SAFETY DEVICES
It is possible to connect normally closed contact devices to the "PHO1" input (terminal 16,18). These devices operate during the
closing cycle.
In particular:
- in closing phase, an immediate inversion of the motion.
- in opening phase, they have no effect.
- if the access is closed, they have no effect.
- if the access is open, they inhibit the closing commands.
If there is more than one device on this contact (PHO1), they must
!
be connected in series.
If there is more than one photocell, the receivers and the transmitters
!
must be alternated (see picture 1).
11B - OPENING SAFETY DEVICES
It is possible to connect normally close contact devices to the "PHO2" input (terminal 17,18). These devices operate during opening
and closing cycles depending on the setting of DIP4 "PHO2" (see paragraph 4A)
DIP4 SET TO ON (Internal photocell):
- in closing phase they continue the movement as soon the
device has been cleared
- in opening phase they continue the movement as soon the
device has been cleared
- if the access is closed they inhibit the opening commands.
- if the access is open they inhibit the closing commands.
If there is more than one device on this contact (PHO2), they must be connected in series.
!
If there is more than one photocell, the receivers must be alternated (see picture 1)
!
11C - SAFETY AUTO TEST (only with 12Vdc photocells)
The control unit has a self-test function of the safeties connected to the "PHO1" and "PHO2" input. It switches off the transmitter
to check the commutation of the corresponding receiver contact before the execution of each manoeuvre. To activate this
self-test function proceed as follows:
- connect the positive of the photocell transmitter power to the terminal "+TX" (terminal 20) instead of the terminal "+VA"
(terminal 19).
- make the programming procedure, as follows.
ACTIVATION
Press button RADIO
for 2 seconds
(the red led "RAD"
is steady on)
DEACTIVATION
Press button RADIO
for 2 seconds
(the red led "RAD" and the
yellow led "SET" is
steady on)
The activation of the self-test, without having properly connected the photocells to the control unit, will cause a
!
malfunctioning of the system.
Press button P2/RAD for 2 seconds to know the state of self-test (activated or deactivated): if the red led "RAD" turns on, it
!
means that the self-test is disabled; if the red led "RAD" and the yellow led "SET" turn on, it means that the self-test is active.
11D - OBSTACLE DETECTION BY POWER ABSORPTION
Depending on the regulation of trimmer "OBS" (see paragraphs 4B, 8), the control unit could be more sensitive (and invert the
motion more easily) in case of impact of a wing against an obstacle. However, a too sensitive regulation of the trimmer, together
with a worsening of the condition of the system caused by the passage of time, could cause unexpected interventions in the
points where the motors absorb more current.
DIP4 IN OFF (safety edge in opening):
- in closing phase they have no effect
- in opening phase an immediate inversion of the motion
for 2 seconds
- if the access is closed they inhibit the opening commands.
- if the access is open they have no effect
Press SET
button
4 times
(the yellow led "SET"
turn on)
Press START
button
for 6 seconds
(the yellow led "SET"
is turns off)
1
RX
TX
Press button RADIO
(the yellow led and the red
led turn off, to indicate that
the function is activated)
Press button RADIO
(the red led turn off,
to indicate that the
function is activated)
TX
RX