Start-Up; Board Leds Check; Check On Bus Status; Automated System Test - FAAC 624 BLD Manual

FREQUENCY REGULATION and NEW BALANCING
The working frequency of each of the detector channels can
be regulated at two levels with the aid of the DS1 DIP- switch
(see fig.1).
DIP 1 ON = Loop 1 frequency LOW
OFF= Loop 1 frequency HIGH
DIP 2 ON = Loop 2 frequency LOW
OFF= Loop 2 frequency HIGH
On changing one of these DIPs, it is recommended that a
new calibration be performed. In case of installation of two
loops, select different frequencies for each loop.
NOTES FOR CONSTRUCTION OF THE LOOPS
The loop must be located at least 15 cm. from fixed metal
objects, at least 50 cm. from moving metal objects and not
more than 5 cm. from the road surface.
Use a normal single-core cable with a section of 1.5 mm²
(if the cable is buried directly, it must be double insulated).
Construct a loop, preferably square or rectangular, preparing a
PVC cable duct or making a track in the flooring as indicated
in figure 16 (the angles must be cut at 45° to avoid cable
breakage). Place the cable, performing the number of
windings indicated in the table. The two ends of the cable must
be intertwined (at least 20 times per metre) from the loop to the
detector. Avoid any cable splicing (if it should be necessary,
solder the wires and seal the junction with a thermo-shrinking
sheath) and keep it separate from power supply lines.
mm
Loop No. of
Perimeter Windings
less than 3 m 6
from 3 to 4 m 5
from 4 to 6 m 4
from 6 to 12 m 3
over 12 m 2
Fig. 16

6. START-UP

6.1. BOARD LEDS CHECK

Before the definitive start-up of the 624 BLD unit, control the
activation status of the LEDs present.
These LEDs indicate the status of the board inputs and have
particular importance for the handling of the automated
system:
LED ON : CLOSED contact
LED OFF : OPEN contact
Figure 16 shows the configuration of
the standard LEDs with the automated
system CLOSED ready to open.
The Emergency inputs (DL5), STOP (DL4),
Photocells (DL3) and Pivot (DL8) are
safety inputs with N.C. (normally closed)
contacts, therefore the corresponding
LEDs are ON.
The FCA and FCC LEDs are the N.C contacts of the limit
switches which, if engaged, become open, consequently
switching off the corresponding LED:
With Automated system
CLOSED
With Automated system
OPEN

6.2. CHECK ON BUS STATUS

Consult this paragraph if BUS photocells have been
installed, as indicated in paragraph 4.3 on page 5.
Enter 1st programming level and show the
programming step on the display.
This step must show three horizontal lines, confirming
that all pairs of BUS photocells are not engaged.
Refer to paragraph 5.3 on page 8 for further details
on displaying these devices.

7. AUTOMATED SYSTEM TEST

When you have finished programming, check if the system is
operating correctly.
Check in particular if power of the automated system is
adequately adjusted and if the safety devices connected to
it operate correctly.
11
Fig. 16
FCC ENGAGED
FCA ENGAGED
bu