38
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This function makes it possible to execute a check of the efficiency of all photocells at the start of every
manoeuvre, thereby increasing the overall safety level of the system. For further details consult heading 16.9.
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The function makes it possible to assign the following type of operation to the Electric lock output (terminals 5
and 6):
•
electric lock (Switch 8 Off) – the output is activated for a few seconds in the opening manoeuvre with the
bar closed
•
suction cup (Switch 8 On) – the output is activated at the end of the closing movement and it remains
activated for the entire time that the bar remains in the closed position.
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In this mode the SCA output is active with the bar open and during the opening movement it remains switched
on, while it is deactivated in the closing manoeuvre
and with the bar closed. This makes it possible to connect a green traffic light to the output to signal free transit
when illuminated.
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Setting switch 10 to On, irrespective of the position of switch 9, serves to activate the function "Traffic light in
both directions"; the following changes occur in the control unit: the "Open" input becomes "Step-by-Step 2",
while the "Courtesy Light" (COR) and "Barrier open indicator light" (SCA) outputs become green traffic light
for one direction and green traffic light for the opposite direction as specified in Fig. 5. For each direction of
transit a different opening command is set: “ Step-by-Step” (PP) to enter and “ Step-by-Step 2” (PP2) to exit; in
this case two traffic lights are installed with Red and Green signals, connected to the SCA and COR outputs.
(COR) 13
V
V
R
R
V
(SCA) 12
R
R
V
11
Common
Command input with PP
Command output with PP2
Barrier open output - SCA
Courtesy light output - COR
Barrier
In normal conditions the SCA and COR outputs are switched off and consequently also the traffic lights are
switched off; when a command is transmitted with PP to enter the protected area, the opening manoeuvre is
started and simultaneously output SCA is activated and the green traffic light in the entry direction is activated
together with the red traffic light in the exit direction.
On the contrary, if the command for opening is given by PP2 the COR output is activated to activate the green
traffic light in the exit direction and the red traffic light in the entry direction. The light will remain illuminated
for the entire duration of the opening phase and during the pause phase, if programmed; in contrast, during the
closing phase the green and red lights will be illuminated together to signal that the transit priority situation is
no longer valid.
The two outputs can be used to drive low power 24 Vdc lamps for a maximum of 10 W per output. If higher
power lamps are required then it will be necessary to use relays driven by the control unit outputs to control the
traffic lights.
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The following section describes some of the more common problems that may be encountered during
installation of the system.
•
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check for the presence of mains voltage on terminals 1 and 2 and ensure that fuses F1 and F3 are not blown.
•
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check that the Stop and Photo safety device input LEDs are active and the motor is locked (release LED
extinguished).
•
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Check whether one of the safety devices has tripped (Photo during the closing manoeuvre) or whether the
current sensor has tripped; in this latter case check that the current sensor setting is sufficiently high to
Summary of Contents for Signo
Page 1: ...1 ISTSG REV 00 01 ...
Page 2: ...2 1 2 A B SIGNO3 SIGNO4 SIGNO6 ...
Page 3: ...3 4 5 7 3 6 ...
Page 4: ...4 8 9 11 10 12 ...
Page 25: ...25 ISTSG REV 00 01 ...
