Notes On Connections; Phototest; Power Supply Connection; Checking The Connections - Mhouse GDS Installation Instructions And Warnings

3.4.3 Notes on connections

Most connections are extremely simple, many of them are direct con-
nections to a single user or contact.
The following figures show examples of how to connect external devices.
Fig. 22: Connecting the flashing light and photocells with "Phototest"
deactivated
Fig. 23: Connecting the flashing light and photocells with "Phototest"
activated
Fig. 24: Connecting the key selector switch
FLASH 24
PHOTO
Fig. 23

3.4.4 Phototest

The control unit GDS features the "Photo-test" function. This is an excel-
lent solution as regards the reliability of safety devices and puts the con-
trol unit + safety device assembly into "category 2" as per UNI EN 954-1
standard (ed. 12/1998).
Whenever a manoeuvre is begun, the relative safety devices are checked
and only if everything is in order will the manoeuvre start.

3.4.5 Power Supply Connection

The connection of the GDS to the mains must be made by a qual-
ified electrician.

3.4.6 Checking the connections

The next operations involve work being done on live circuits,
some parts have mains voltage running through them and are
therefore EXTREMELY DANGEROUS!
Pay the greatest of attention to what you are doing and NEVER
WORK ALONE!
After making connections, the whole system must be checked.
• Power the control unit and check that the OK Led flashes rapidly for a
few seconds.
• Check that there is a voltage of 24Vac on terminals 3-4, 3-6, 3-7 and
that there is a voltage of 0Vac on terminals 3-8; if this is not the case,
unplug the unit immediately and carefully check the connections and
the voltage input.
• After the initial rapid flashing, the OK Led shows the control unit is
working correctly by flashing regularly at 1 second intervals. When
there is a variation in the inputs, the OK Led flashes rapidly twice to
show that the input has been recognised. When the photocells detect
an obstacle, the OK Led flashes rapidly twice, as it also does when the
"Stop" input is deactivated.
• Carry out a test with the door disconnected from the motor; perform a
brief opening and closing cycle and press the "Step-by-step" button to
check the mechanical parts are in working order. (The first manoeuvre
made after the unit is powered is always "Open"). At the end of the
cycle, reconnect the door to the drive trolley.
1 2 3 4 5 6 7 8 9 10
TX RX
PHOTO
1 2 1 2 3 4 5
FLASH 24
Fig. 22
STOP
NC
COM
Fig. 24
All this is only possible if a special configuration of the safety device con-
nections is used; in practice, the "TX" photocell transmitters are powered
separately from the "RX" receivers (for connections see figure 23).
Note: when "Photo-test" is active, the photocell transmitter is only pow-
ered during the manoeuvre.
To carry out tests, insert the plug of GDS in a power outlet; if necessary,
use an extension cord.
• Then position the limit stop slides as shown in Fig. 25.
APRE
OPEN
OUVRE
ÖFFNET
ABRE
OTWIERA
OPENING
Press the "Step-by-step" button and check that the door moves in the
opening direction. Press the "Step-by-step" button when the door is 1
cm from the opening point, thereby stopping the manoeuvre; then insert
the "Open" travel stop slide on the edge of the cover. Press the "Step-
by-step" button again and check that the door moves in the closing
direction. Press the "Step-by-step" button when the door is 1 cm from
the closing point, thereby stopping the manoeuvre; then insert the
"Close" travel stop slide on the edge of the cover.
1 2 3 4 5 6 7 8 9 10
TX RX
PHOTO PHOTO
1 2 1 2 3 4 5
1 2 3 4 5 6 7 8 9 10
STEP-BY
STEP
NO
CHIUDE
CLOSE
FERME
SCHLIEßT
CIERRA
ZAMYKA
SLUITING
Fig. 25
Instructions GDS 9