Controlled Products Systems Group 109837 - Manual (Page 20)

20 FAAC MODEL 844 Slide Gate Operator
A B
Fig. 46
Fig. 45
Fig. 44
Fig. 43
7. FINAL OPERATIONS
6.7. CHECK OF STOP POINTS
Be careful when setting the post-limit-switch deceleration
and braking. If the deceleration is too long and braking is
insufficient, the magnet or steel plate fitted on the gate's rack
can overshoot the sensor until it is disengaged. When the gate
stops, check that only the light limit-switch is engaged. The
relevant LED must be OFF. If it went OFF and then ON again,
or if both limit-switch LEDS are OFF, you must reduce the
post-limit-switch deceleration value and/or increase the braking
value (see Section 5.5.2).
6.8. SAFETY DEVICES AND ACCESSORIES
CHECK
Check for the correct operation of all safety equipment, anti-
crushing devices (ENCODER sensor), and accessories used in
the system.
• Snap-fit the side panels, put the equipment's cover on
and secure it with the supplied screws (Fig. 46).
• Remove the vent stop screw (Fig. 47).
•
Explain to the customer the correct operation and use of
the operator, and indicate the potentially dangerous areas
of the automated system.
Notes on Plate Positioning
• To ensure correct operation, allow at least 3/4 inch from the me-
chanical stop limit in the gate stop position. Carry out this check
after determining the values of the pre- and post-limit switch
decelerations (see Section 5.5.2.) and after running at least one
complete cycle of the automated system.
• The distance between the limit-switch and the plates must be <
3/16 inch.
6.5. CHECK OF MOTOR CONNECTION
LEDS ON OFF
OP-A Command activated Command inactive
OP-B Command activated Command inactive
FC1 Limit-switch free Limit-switch engaged
FC2 Limit-switch free Limit-switch engaged
FSW OP Safety devices disengaged Safety devices engaged
FSW CL Safety devices disengaged Safety devices engaged
STOP Command inactive Command activated
SAFE Safety devices disengaged Safety devices engaged
ENC Flashes while the motor rotates
NB: The status of the LEDs while the gate is closed are shown in bold. If
opening direction is to the left, the status of LEDS FC1 and FC2 is reversed.
6.4. CHECK OF INPUTS
The table below shows the status of the LEDs in relation to to
the status of the inputs.
Note the following:
L
ed
ON = closed contact
L
ed
OFF = open contact
Check the status of the LEDs as per the following table.
6.6. MECHANICAL CLUTCH ADJUSTMENT
In addition to its electronic safety devices (encoder and force
adjustment), the 844 operator is also equipped with a mechanical
clutch.
For gate force and the encoder, please consult Sections 5.5.1 and
5.5.2.
Adjusting the Operating Threshold of the Mechanical Clutch:
1. Cut electrical power to the automated system.
2. Keep the motor shaft locked with a wrench and turn the clutch
adjustment screw with an Allen wrench or screwdriver as shown in
Fig. 44 Ref. A.
- To increase torque, turn the screw clockwise.
- To reduce torque, turn the screw counter-clockwise.

The operator is supplied with the clutch set to maximum level.
Therefore, you must initially turn the screw counter-clockwise
to reach the best setting.
3. Power up the automated system and check that the torque you
have just set is correct.
 The operator is supplied as standard with a clutch adjustment
spring for gates up to 2200 lbs. For heavier gates, use the sup-
plied alternative spring. For spring replacement instructions,
see Fig. 44 Ref. B.
Table 2: Operation of the Signalling Status LEDs
Check that the
motor wiring
is as shown in
Fig. 43 (standard
connection).
BROWN
BLACK
BLUE
J6
M
MOT 2
MOT 1
MOT
COM
• After installation, apply the danger sticker to the top of the
cover (Fig. 45).