19
GB
7.3.2) PHOTO Input
The PHOTO input is factory short circuited by means of a jumper
between inputs 3 and 7 of the terminal board.
This control unit is equipped with the “Phototest” function that
increases the reliability of the safety devices, making it possible to
achieve “category 2” according to the EN 954-1 (edit. 12/1998)
regarding the control unit and safety photocell group.
Whenever a manoeuvre is begun, the relative safety devices are
checked and only if everything is in order will the manoeuvre start. If
the test has a negative outcome (photocell blinded by the sun,
short-circuited cable etc.), the fault is recognised and the manoeu-
vre is not performed.
To add a pair of photocells, remove the jumper and connect as fol-
lows.
Connect without “Phototest” function (fig. 38-39):
Connect the power to the receivers directly from the services output
of the control unit (terminals 3 - 6).
Connect with “Phototest” function (fig. 40-41):
The photocell transmitter power is taken between terminals 8-6 of the “Phototest” output and not from the services output. The maximum
current that can be used on the “Phototest” output is 100mA.
Activate the synchronism as described in the Photocell instructions, in the event there are two pairs of photocells that could interfere with
one another.
7.4.1) “Always open” Function
The “Always open” function is a control unit feature which enables
the user to control an opening manoeuvre when the “Step-by-step”
command lasts longer than 3 seconds. This is useful for connecting
a timer contact to the “Step-by-step” input in order to keep the door
open for a certain length of time, for example. This feature is valid
whatever the “Step-by-step” input programming may be (see the
“Step-by-step” properties in table 17).
7.4) Special functions
7.4.2) “Move anyway” Function
If one of the safety devices are out of order or malfunctioning, it is still
possible to control the door in “Man present” mode.
Please refer to the Paragraph “Control with safety devices out of
order” in the enclosure “Instructions and Warnings for users of the
SPIN gearmotor”.
38
39
40
41
7.5) Connection of other devices
If the user needs to feed external devices such as a proximity read-
er for transponder cards or the illumination light of the key-operated
selector switch, it is possible to tap power as shown in Figure 42.
The power supply voltage is 24Vac -30% +50% with a maximum
available current of 100mA.
24Vac
42
