FAAC 844 User manual

844
Slide Gate Operator
FAAC International Inc.
Headquarter & East Coast Operations
3160 Murrell Rd
Rockledge, FL 32955
Tel. [phone]
www.faacusa.com
FAAC International Inc.
West Coast Operations
357 South Acacia Avenue
Fullerton, CA 92831
UL325 - UL991

2
IMPORTANT SAFETY INFORMATION 3
Important Safety Instructions 3
Important Installation Instructions 3
General Safety Precautions 4
UL325 Gate Operator Classifications 5
Installing the Warning Signs 5
1. DESCRIPTION & SPECIFICATIONS 6
1.1. Maximum Use Curve 6
1.2 Technical Specifications 6
2. DIMENSIONS 7
3. ELECTRIC LAYOUT 7
4. INSTALLATION 7
4.1. Preliminary Checks 7
4.2. Foundation Plate Installation 7
4.3. Mechanical Installation 8
4.4. Installing The Rack 8
4.5. Installation Of Chain Pinions 9
5. CONTROL BOARD 780D 10
5.1. Warnings 10
5.2. 780D Technical Specifications 10
5.3. Layout And Components 10
5.4. Electric Connections 11
5.5. Programming 13
6. START-UP 16
6.1. Electric Connections 16
6.2. Opening - Closing Directions 16
6.3. Determining Stop Points At Travel Limit 16
6.4. Inputs Check 17
6.5. Mechanical Clutch Adjustment 17
6.6. Travel Limits Check 17
6.7. Safety Devices Check 17
7. FINAL OPERATIONS 18
8. MANUAL OPERATION 18
9. RESTORING NORMAL OPERATION 18
10. MAINTENANCE 19
10.1. Removing Board And Transformer 19
10.2. Oil Top-Offs 19
10.3. Repairs 19
11. LOGICS TABLES 20
12. SPARES PARTS DIAGRAM 22
13. TROUBLESHOOTING 24
TABLE OF CONTENTS
844ER_732242_RevB_US - Jan 2017

3
1. Install the gate operator only when the following condi-
tions have been met:
• The operator is appropriate for the type and usage
class of the gate.
• All openings of a horizontal slide gate have been
guarded or screened from the bottom of the gate
to a minimum of 6 feet (1.83 m) above the ground
to prevent a 2-1/4 inch (57.2 mm) diameter sphere
from passing through openings anywhere in the gate
or through that portion of the adjacent fence that the
gate covers when in the open position.
• All exposed pinch points are eliminated or guarded.
• Guarding is supplied for exposed rollers.
2. The operator is intended for installation on gates used by
vehicles only. Pedestrians must be provided with a sepa-
rate access opening.
3. To reduce the risk of entrapment when opening and
closing, the gate must be installed in a location that
allows adequate clearance between the gate and
adjacent structures. Swinging gates shall not open
outward into public access areas.
4. Before installing the gate operator, ensure that the gate
has been properly installed and that it swings freely in
both directions. Do not over-tighten the operator clutch
or pressure relief valve to compensate for a damaged
gate.
5. Controls intended for user activation must be located
at least six feet (6’) away from any moving part of the
gate and where the user is prevented from reaching
over, under, around or through the gate to operate the
controls.Exception: Emergency access controls only
accessible by authorized personnel (e.g. fire, police, EMS)
may be placed at any location in the line-of-sight of the
gate.
6. The Stop and/or Reset buttons must be located within
line-of-sight of the gate. Activation of the reset control
shall not cause the operator to start.
7. All warning signs and placards must be installed and
easily seen within visible proximity of the gate. A minimum
of one warning sign shall be installed on each side of the
gate.
8. For gate operators that utilize a non-contact sensor
(photo beam or the like):
• See instructions on the placement of non-contact
sensors for each type of application.
• Exercise care to reduce the risk of nuisance tripping,
such as when a vehicle trips the sensor while the gate
is still moving.
• Locate one or more non-contact sensors where the
risk of entrapment or obstruction exists, such as at the
reachable perimeter of a moving gate or barrier.
• Use only FAAC “Photobeam” photoelectric eyes to
comply with UL325.
9. For gate operators that utilize a contact sensor (edge
Important Installation Instructions
WARNING: TO REDUCE THE RISK OF SEVERE INJURY OR
DEATH:
• READ AND FOLLOW ALL INSTRUCTIONS.
• Never let children operate or play with the gate
controls. Keep remote controls away from children.
• Always keep people and objects away from the
gate. NO ONE SHOULD CROSS THE PATH OF A
MOVING GATE.
• Test the gate operator monthly. The gate MUST
reverse on contact with a rigid object or when an
object activates a non-contact sensor. If necessary,
adjust the force or the limit of travel and then retest
the gate operator. Failure to properly adjust and
retest the gate operator can increase the risk of injury
or death.
• Use the manual release mechanism only when the
gate is not moving.
• KEEP GATE PROPERLY MAINTAINED. Have a qualified
service person make repairs to gate hardware.
• The entrance is for vehicles only. Pedestrians must use
a separate entrance.
• SAVE THESE INSTRUCTIONS.
IMPORTANT SAFETY INFORMATION
Important Safety Instructions

4
Gate Construction
Vehicular gates should be constructed and installed in
accordance with ASTM F2200: Standard Specification for
Automated Vehicular Gate Construction.
For more information, contact ASTM at: www.astm.org
Installation
• If you have any questions or concerns regarding the
safety of the gate operating system, do not install the
operator and consult the manufacturer.
• The condition of the gate structure itself directly affects
the reliability and safety of the gate operator.
• Only qualified personnel should install this equipment.
Failure to meet this requirement could cause severe
injury and/or death, for which the manufacturer cannot
be held responsible.
• The installer must provide a main power switch that
meets all applicable safety regulations.
• It is extremely unsafe to compensate for a damaged
gate by increasing hydraulic pressure.
• Install devices such as reversing edges and photo
beams to provide better protection for personal
property and pedestrians. Install reversing devices that
are appropriate to the gate design and application.
• Before applying electrical power, ensure that voltage
requirements of the equipment correspond to the
supply voltage. Refer to the label on your gate operator
system.
Usage
• Use this equipment only in the capacity for which it was
designed. Any use other than that stated should be
considered improper and therefore dangerous.
• The manufacturer cannot be held responsible
for damage caused by improper, erroneous or
unreasonable use.
• If a gate system component malfunctions, disconnect
the main power before attempting to repair it.
• Do not impede the movement of the gate, you may
injure yourself or damage the gate system as a result.
• This equipment may reach high thermal temperatures
during normal operation, therefore use caution when
touching the external housing of the gate operator.
• Use the manual release mechanism according to the
procedures presented in this manual.
• Before performing any cleaning or maintenance
operations, disconnect power to the equipment.
• All cleaning, maintenance or repair work must be
performed by qualified personnel.
General Safety Precautions
• Locate one or more contact sensors where the risk
of entrapment or obstruction exists, such as at the
leading edge, trailing edge, and post mounted
both inside and outside of a vehicular horizontal
slide gate
• Locate one or more contact sensors at the bottom
edge of a vehicular vertical lift gate.
• Locate one or more contact sensors at the bottom
edge of a vertical barrier (arm).
• Locate one or more contact sensors at the pinch
point of a vehicular vertical pivot gate.
• Locate hard-wired contact sensors and wiring so
that communication between sensor and gate
operator is not subjected to mechanical damage.
• Locate wireless contact sensors, such as those
that transmit radio frequency (RF) signals, where
the transmission of signals are not obstructed or
impeded by building structures, natural land-
scaping or similar hindrances. Wireless contact
sensors shall function under their intended end-use
conditions.
• Use only FAAC XS 55, CN 60 E edge sensors.
Important Installation Instructions (continued)
sensor or similar):

5
RESIDENTIAL VEHICULAR GATE OPERATOR CLASS I
A vehicular gate operator system intended for use in a single family dwelling, garage or associated parking area.
UL325 Gate Operator Classifications
COMMERCIAL / GENERAL ACCESS VEHICULAR GATE OPERATOR CLASS II
A vehicular gate operator system intended for use in commercial locations or buildings such as multi-family housing
units (five or more single family units), hotels, parking garages, retail stores or other buildings that service the general
public.
INDUSTRIAL / LIMITED ACCESS VEHICULAR GATE OPERATOR CLASS III
A vehicular gate operator system intended for use in industrial locations or buildings such as factories, loading docks
or other locations not intended to service the general public.
RESTRICTED ACCESS VEHICULAR GATE OPERATOR CLASS IV
A vehicular gate operator system intended for use in guarded industrial locations or buildings such as airport security
areas or other restricted access locations that do not service the general public, and in which unauthorized access
is prevented via supervision by security personnel.
This FAAC slide gate operator is supplied with two warning
signs to alert people that a possible hazard exists and that
appropriate actions should be taken to avoid the hazard
or to reduce exposure to it.
Permanently install one warning sign on each side of the
gate so they are fully visible to traffic and pedestrians.
Use appropriate hardware such as metal screws (not sup-
plied) to permanently install each warning sign.
Installing the Warning Signs

6
844 OPERATOR
The FAAC Model 844 is an electro-mechanical operator for
sliding gates transmitting motion to the sliding leaf via a rack or
chain pinion appropriately coupled to the gate.
The non-reversing system ensures the gate is mechanically
locked when the motor is not operating and, therefore, no lock
needs to be installed.
The gearmotor is equipped with a mechanical clutch which,
combined with an electronic device, offers the necessary adju-
stable anti-crushing safety and guarantees stopping or reversing
the gate movement. A handy manual release makes it possible
to move the gate in the event of a power cut or malfunction.
The control board, if supplied with the gearmotor, it is placed
inside the operator.
The 844 automated system is designed and manufactured to
control access of vehicles. Do not use for any other purpose.
1. Mounting Brackets
2. Pinion
3. Limit Sensor Switch
4. Operator Cover
5. 780 D Control Board
6. Adjustment Screw for
Anti-crushing Clutch
7. Oil Filling Plug
8. Operator Grounding
9. Lever Operated Release
System
10. Protective Side Panels
11. Cover for 780D Control
Board
Fig. 1
1.1. Maximum Use Curve
The curve makes it possible to establish maximum work time (T)
according to use frequency (F). The 844 gearmotor can operate
non-stop at 70% use frequency.
To ensure efficient operation, operate in the work range below
the curve.
Important: The curve is obtained at a temperature of 75°F. Expo-
sure to direct sunlight can reduce use frequency down to 20%.
Calculating Use Frequency
The percentage of effective work time (opening + closing) com-
pared to total time of cycle (opening + closing + pause times).
Calculation formula:
Ta + Tc
%F = X 100
Ta + Tc + Tp + Ti
0
10
20
30
40
50
60
70
80
90
100
12 3456789101112
% Freq. Used % Duty Cycle
Time (h)
Use Frequency Graph
Type of Pinion Z16 Z20
Power Supply 115 Vac (+ 10% -6%)
Absorbed Power 650 W
Reduction Ratio 1 : 30
Max. Thrust 247 lbf 198 lbf
Max. Torque 26 lbf.ft
Winding Thermal Protection 248 °F
Use Frequency 70% (see graph)
Oil Quantity 1.9 qt
Type of Oil FAAC HP
Ambient Operating Temperature -4 to +131 °F
Weight 32 lb
Protection Class IP 44
Gate Max. Weight 3950 lb 2200 lb
Gate Speed 38 ft/min 47 ft/min
Gate Max. Length 131 ft 164 ft
Clutch twin-disk in oil bath
Protective Treatment cataphoresis
Control Board 780D
Limit-Switch magnetic or inductive
Overall Dimensions L x H x D See Fig. 2
Electric Motor Technical Specifications
Rotation Speed 1700 r.p.m
Power 650 W
Current 7 A
Starting Capacitor 70 µF
Power Supply 115 Vac (+ 10% -6%)
1.2 Technical Specifications
1. DESCRIPTION AND SPECIFICATION where:
Ta =opening time
Tc = closing time
Tp = pause time
Ti =time of interval between two complete cycles

7
2.5 in
2
8
¾0
to 2
- Measurements in Inches

Fig. 2
Fig. 3
Operator 844
Photocells
Key-operated push-button
Flashing lamp
Radio receiver
15 ¼
10 ¾
6
7 ½
- Measurements in Inches
8 ¾
VAC ~ 15 AWG
20 AWG
20 AWG
20 AWG
20 AWG
15 AWG
2. DIMENSIONS
3. ELECTRICAL LAYOUT
4. INSTALLATION
4.1. Preliminary Checks
To ensure safety and an efficiently operating automated sy-
stem, make sure the following conditions are observed:
• The gate structure must be suitable for automation. For
example, wheel diameter must be in proportion to the
weight of the gate to be automated, an upper guide
must be provided, mechanical stop limits to prevent the
gate derailing must be installed.
• The soil must permit sufficient stability for the concrete pad.
• There must be no pipes or electric cables in the pad
excavation area.
• If the operator is exposed to passing vehicles, install, if
possible, adequate means of protection against acci-
dental impact.
• Check if an efficient grounding is available for connection
to the gearmotor.
4.2. Foundation Plate Installation
1. Assemble the foundation plate as shown in Fig 4. The
foundation plate must be located as shown in Fig 5 (right
closing) or Fig 6 (left closing) to ensure that the rack and
pinion mesh correctly.
2. Prepare a concrete pad as shown in Fig.7, following the
suggested dimensions. It’s recommended to have the pad
a minimum of 4” above level grade to avoid any flooding
of the operator. The underground depth of the concrete
pad is determined by the soil condition and the local
building codes. Make sure the concrete pad is leveled.
3. Provide one or more conduit pathways for all power and
accessory connections. Extend the conduit about of 1/2”
above the level of the concrete pad.
4. After the concrete is poured in the forms and before it
has a chance to set, insert the foundation plate into the
cement and position it flush with the top of the concrete
and aligned with the top of the lower gate frame. Use the
dimensions shown in Figs 5 or 6 to align your foundation
plate. Allow the concrete to set for a minimum of two days
before installing the operator.
5. Route the wires in the conduits. To facilitate the connec-
tions allow for about 15” of extra length of cables out of
the conduit. Separate the high and low voltage wires in
different conduits.
Fig. 4
Fig. 5

0 to 2
2
6
- Measurements in Inches
Fig. 6

8
15 ¾
- Measurements in Inches
2 ½
2
4 ⅜ (Z16)
4 ¾ (Z20)
⅝ to 1 ¼
- Measurements in Inches
Fig. 7
1. Assemble the mounting brackets and anti-vibration spacers
on the operator as shown in Fig. 8.
2. Open the cover, remove the securing screws.
3. Attach the operator to the plate, using the supplied washers
and nuts as shown in Fig. 9. During this operation, route
cables through the opening inside the lower half-casing
of the operator (Fig.10 - Ref. A).
11.5
1.75
1.75
6.25
3
3
2⅜
2⅜
4
7
12.25
0.25
- Measurements in Inches
4.3. MECHANICAL INSTALLATION
Fig. 8
Fig. 12
Fig. 10BFig. 10A
Fig. 11
Fig. 9
4. Adjust the height
and distance from
the gate as shown
in Fig 11.
5. Secure the opera-
tor to the founda-
tion plate, tighten
nuts as shown in
Fig. 12.
1. Place the three threaded
dowel nuts on the rack
element, positioning them
at the top of the slot. In
this way, the slot play will
allow any adjustments to
be made.
2. Manually move the leaf to
its closed position.
3. Lay the first piece of rack
level on the pinion and weld the threaded dowel nut to the
gate as shown in Fig. 15.
4. Move the gate manually, checking that the rack is resting
on the pinion, then weld the second and third dowel nut.
5. Place another rack element next to the previous one, use
a third piece of rack (as shown in Fig. 16) to synchronize
the teeth of the first two elements.
6. Move the gate manually and weld the three threaded
dowel nuts. Proceed as described until the gate is fully
covered.
4.4. INSTALLING THE RACK
4.4.1. STEEL RACK TO WELD (Fig. 13)
4.4.2. STEEL RACK TO SCREW (Fig. 14)
To access the electronic board, route the cables through the
appropriate hole, using the supplied rubber cable-clamp.
Make sure to strip the jacket on all cables so that the clamp
holds single cables only (Fig.10 - Ref. B).
1. Manually move the leaf to
its closing position.
2. Lay the first piece of rack
level on the pinion and
place the spacer between
the rack and the gate,
positioning it at the top of
the slot.
3. Mark the drilling point on the
gate. Drill a Ø ¼ inch hole and apply thread with a Ø 5/16
inch male tap. Screw in the bolt.
4. Move the gate manually, checking that the rack is resting
on the pinion. Repeat step 3.
Fig. 13
Fig. 14

9
Notes on Rack Installation
Fig. 17
Fig. 15
Fig. 16
1
16 inch
• Make sure that, during gate travel, no rack elements derail
from the pinion.
• Do not, for any reason, weld the rack elements either to the
spacers or to each other.
• When the rack has been installed, to ensure that it meshes
correctly with the pinion, lower the gearmotor position by
The operators for chain and idle transmissions require the instal-
lation of a Z16 or Z20 chain pinion.
4.5.1. MODEL 844 ER CAT (Figs. 18 & 19)
1. Insert the pin on the shaft, using a hammer.
2. Fit the chain pinion on the shaft, making the channel coin-
cide with the pin. Tighten the screw and the appropriate
washers.
Fig. 19
Fig. 18
about 1/16 inch (Fig. 17).
• Manually check that the
gate regularly reaches
the mechanical stop li-
mits and make sure there
is no friction during gate
travel.
• Do not use grease or other
lubricants between rack
and pinion.
4.5. INSTALLATION OF CHAIN PINIONS
3. Insert the pin gon the shaft, using a hammer.
4. Fit the idle transmissions bracket on the operator flange,
using the four screws a(M5 x 12) and the appropriate wa-
shers b, in the kit as shown in Fig. 20.
5. Fit the chain pinion on the shaft, making the channel coinci-
de with the pin and tighten the screw d and the appropriate
washers eand f.
6. Pass the chain as shown in Fig. 21A and install the cover
with screw aand washer cas in Fig. 20.
4.5.2. MODEL 844 ER RF (Figs. 20 & 21)
In case of operators with magnetic limit switches, you have to
provide a bracket to mount them on the gate, following the
proper distances shown in Fig. 21B.
4.5.3. LIMIT SWITCHES
c
d
g
f
e
b
a
a
Fig. 20
Fig. 21A
Fig. 21B
0 to ⅜
⅛ to ½
- Measurements in Inches
6. Place another rack ele-
ment next to the pre-
vious one, use a third
piece of rack (as shown
in Fig. 16) to synchronize
the teeth of the first two
elements.
7. Move the gate ma-
nually and secure the
first element. Proceed
as previously described
until the gate is fully
covered.

10
–
+
DL
Led
F1
J1
J2
Led
J5
F
J7
F2
J8
J6
Fig. 22
1OPEN A (total opening)
2 OPEN B (partial opening)
3 FSW-OP (opening safety devices)
4FSW-CL (closing safety devices)
5STOP
6SAFE (“edge” safety devices)
7- (negative for power supply to accessories)
8- (negative for power supply to accessories)
9+24V (supply to accessories)
10 +24V (supply to accessories)
11 FSW-TX (negative for emitting photocells - FAILSAFE)
12 AA (negative for Audio Alarm)
J1 CONNECTOR
5.2. 780D TECHNICAL SPECIFICATIONS
DL SIGNALLING AND PROGRAMMING DISPLAY
Led INPUTS STATUS CONTROL LED
J1 LOW VOLTAGE TERMINAL BLOCK
J2 CONNECTOR FOR RP RECEIVER
J5 CONNECTOR FOR MOTOR STARTING CAPACITOR
J6 MOTOR AND FLASHING LAMP CONNECTION TERMINAL BLOCK
J7 VAC POWER SUPPLY TERMINAL BLOCK
J8 DOUBLE CONNECTOR - RAPID CONNECTION TO LIMIT-SWITCH
F1 MOTOR AND TRANSFORMER PRIMARY WINDING FUSE (F 5A - 230V;
F 10A - 115V)
F2 LOW VOLTAGE AND ACCESSORIES FUSE (T 800mA)
F "F" PROGRAMMING PUSH-BUTTON
– "–" PROGRAMMING PUSH-BUTTON
+ "+" PROGRAMMING PUSH-BUTTON
5.3. LAYOUT AND COMPONENTS
780D Technical Specifications (continued)
5.1. WARNINGS
Important: Before attempting any work on the control board
(connections, maintenance), always turn off power.
• Check local wiring codes in all cases and follow all local building
codes. Wiring and hookup should be performed by qualified
electricians/installers only.
• AC power should be supplied from a circuit breaker panel and
must have its own dedicated circuit breaker. This supply must
include a green ground conductor.
• Properly ground the gate operator to minimize or prevent dam-
age from power surges and/or lightning. Use a grounding rod if
necessary. Connect the ground cable to the PE terminal on J7
(Fig. 22), and to the ground lug on the operator (Fig. 40). A surge
suppressor is recommended for additional protection.
• Always separate power cables from control and safety cables
(push-button, receiver, photocells, etc.).
Power Supply 115 Vac (+
10% -6%)
Input Power 10 W
Motor Max. Load 1000 W
Accessories Max.
Load (A)
0.5 A
Operating Ambient
Temperature
-4°F to +131°F
Protection Fuses 2 (see Fig. 22 and Section 5.3)
Function Logics Automatic / “Stepped” automatic /
Semi-automatic / Safety devices /
Semi-automatic B / Dead-man C /
“Stepped” semi-automatic / Mixed B/C
logic
Work Time Programmable (from 0 to 4.1 min.)
Pause Time Programmable (from 0 to 4.1 min.)
Thrust Force Adjustable over 50 levels
Terminal Board Inputs Open - Partial Open - Opening safety
devices - Closing safety devices - Stop
- Edge - Power supply+ground
On-Connector Inputs Opening and closing limit-switch -
Motor capacitor
Terminal Board
Outputs
Flashing lamp - Motor - 24 VDC acces-
sories power supply- 24 VDC indicator-
light / Timed output / Electric lock com-
mand - 'traffic lights' - Failsafe
Rapid Connector 5-pin card connection for RP receivers
Programming 3 keys (+, -, F) and display, "basic" or
"advanced" mode
5. CONTROL BOARD 780D

11
SAFE
+
+
OPEN B
OPENA
OP
CL
J1
J5
A
AA
Fig. 23
5.4.1. Connection of Photocells and Safety Devices
For compliance with UL325 all the entrapment zones generated
by the moving gate must be protected by safety devices. See
Fig. 24 for a typycale example of how safety devices can be
installed to protect entrapment zones.
Opening Safety Devices:
Active only during gate opening movement. When an
obstacle is detected they cause immediate reversing
and resumption of the opening motion on release (see
advanced programming in Section 5.5.2.)
Closing Safety Devices:
Active only during gate closing movement. When an
obstacle is detected they cause reversing, either im-
mediate or on release (see advanced programming
in Section 5.5.2.)
Edge Safety Devices:
Active during the gate opening and closing move-
ments. They cause immediate reversal of motion and
stopping after two seconds.
Encoder:
Monitors for an obstacle during gate opening and
closing movements. It causes immediate reversal of
motion and stopping after two seconds.
Note: For compliance with the UL325 Ed. 6 all safety de-
vices that protect entrapment zones must be monitored.
The 844 operator monitors the safety devices with the FAIL
SAFE function.
See advance programming in Section 5.5.2 tor details on the
different options for Fail Safe. A minimum of one external de-
vice on opening and one external device on closing must be
connected and monitored. See the following figures for various
examples of connections.
VAC (Max. 60W)
~ VAC
TOTAL
OPEN
PARTIAL OPEN
STOP
For connection of the
photocells and safety
devices, see Section
5.4.1.
LIMIT-SWITCH
Capacitor
5.4. ELECTRIC CONNECTIONS
Fig. 24
Closing
photocells
Closing photocells
Opening photocells
"Edge" safety devices
BLUE
AUDIO ALARM
Connection of a pair of monitored opening photocellsa pair of
monitored closing photocells
Fig. 25
SAFE
+
+
OPEN
B
A
OPEN
OP
CL
++
+
+
RX OPEN TX OPEN
RX CLOSE TX CLOSE

12
Fig. 28
Connection of a monitored sensing edge in closing and opening
5.4.2. J7 Terminal Block - Power Supply (Fig. 23)
POWER SUPPLY (Terminals PE-N-L):
PE: Ground connection
N : AC Power ( Neutral )
L : AC Power ( Line )
5.4.3. J6 Terminal Block - Motors / Flashing Lamp (Fig. 23)
MOTOR - (Terminals MOT-C, MOT-1, MOT-2): Motor con-
nection (see Section 6.5).
LAMP - (Terminals LAMP L, LAMP N): Flashing lamp output
same VAC as input; max 60W.
5.4.4. J1 Terminal Block - Accessories (Fig. 23)
Consult the relevant tables for a detailed description of
operation in the different logics
Fig. 26
Connection of a pair of monitored opening photocells and a
monitored closing edge
SAFE
+
+
OPEN
B
A
OPEN
OP
CL
79
ON
XS 55
CN 60 E
1 4
+
OPEN
EDGE
XS 55
CLOSE
EDGE
SAFE
+
+
OPEN
B
A
OPEN
OP
CL
79
ON
XS 55
CN 60 E
1 4
+
+
+
RX OPEN TX OPEN
CLOSE
EDGE
SAFE
+
+
OPEN
B
A
OPEN
OP
CL
79
ON
XS 55
CN 60 E
1 4
+
+
+
RX CLOSE TX CLOSE
OPEN
EDGE
Connection of a pair of monitored closing photocells and a
monitored opening edge
SAFE
+
+
OPEN
B
A
OPEN
OP
CL
OPEN
EDGE
79
ON
XS 55
CN 60 E
XS 55
1 4
++
+
+
+
RX OPEN TX OPEN
CLOSE
EDGE
RX CLOSE TX CLOSE
Connection of a pair of monitored opening photocells, monito-
red closing photocells and a monitored closing edge
Fig. 27
Fig. 29

13
Fig. 31
Fig. 30
Connection of two N.O. contacts in parallel
(Open A, Open B)
OPEN A - “Total Opening” Command (Terminal 1): any pul-
se generator (push-button, detector, etc.) which, by closing
a contact, commands total opening and/or closing of the
gate leaf.
To install several total opening pulse generators, connect the
N.O. contacts in parallel (Fig. 30).
OPEN B - “Partial Opening” or “Closing” Command
(Terminal 2): any pulse generator (push-button, detector,
etc.) which, by closing a contact, commands partial
opening and/or closing of the gate leaf. In the B, C and B/C
logics, it always commands gate closure.
To install several partial opening pulse generators, connect
the N.O. contacts in parallel (Fig. 30).
FSW OP - Opening Safety Devices Contact (Terminal 3):
The purpose of the opening safety devices is to protect the
leaf movement area during opening. During opening, in the
A-AP-S-E-EP logics the safety devices reverse the movement
of the gate, or stop and restart the movement when it is re-
leased (see advanced programming in Section 5.5.2). Du-
ring the opening cycle in logics B, C and B/C, they interrupt
movement. They never operate during the closing cycle.
If the Opening Safety Devices are engaged when the gate
is closed, they prevent the opening movement.
Note: If no opening safety devices are needed, jumper
terminals FSW OP and -.
FSW CL - Closing Safety Devices Contact (Terminal 4):
The purpose of the closing safety devices is to protect the
gate movement area during closing. During closing, in the
A-AP-S-E-EP logics, the safety devices reverse the movement
of the gate, or stop and reverse the movement when it is
released (see advanced programming in Section 5.5.2).
During the closing cycle in logics B, C and B/C, they interrupt
movement. They never operate during the opening cycle.
If the Closing Safety Devices are engaged when the gate is
open, they prevent the closing movement.
Note: If no closing safety devices are needed, jumper
terminals FSW CL and -.
STOP - STOP Contact (Terminal 5):
Any device (e.g. a push-button) which, by opening a con-
tact, stops gate movement.
To install several STOP devices, connect the N.C. contacts in
series (Fig. 31).
Note: If STOP devices are not connected, jumper the
STOP and - terminals.
Connection of two Stop N.C. contacts in series
RP
Fig. 32
SAFE - EDGE Safety Device Contact (Terminal 6):
The purpose of the edge safety device is to protect the leaf
movement area during opening/closing. In all logics, during
opening and closing, the safety device reverses gate mo-
vement for 2 seconds. If the safety devices operate again
during the 2-seconds reversing time, it stops movement
(STOP) without any reversing.
If the Edge Safety Device is engaged while the gate is clo-
sed or open, it prevents movement.
Note: If edge safety devices are not needed, jumper
terminals SAFE and -.
–Negative for power supply to accessories
(Terminals 7 and 8)
+ 24 VDC - Positive for power supply to accessories
(Terminals 9 and 10)
Important: Accessories max. load is 500 mA. To calculate the
load, refer to the instructions for the individual accessories.
TX -FSW - Negative for Power Supply to Photocell Transmit-
ters or edge controller (Terminal 11)
Use this terminal to connect the negative transmitters of the
photocell power and enable the FAIL SAFE function (see
advanced programming in Section 5.5.2) for compliance
with UL325 Ed. 6
With this function is enabled, the equipment checks for
proper operation of the photocells or edge controller before
every opening or closing cycle.
A.A. - Power Supply to Audio Alarm (Terminal 12)
Connect the supplied Audio Alarm as shown in fig. 23. The
alarm will sound upon two consecutive obstacle detections
by the operator. It will sound continuosly until the activation
of the STOP input or a power cycle.
5.4.5. J2 Connector - Rapid Connection to RP
This is used for rapid connection of RP receivers (see Fig.
38). Fit the accessory with the components side toward
connector J1. Insert and remove after cutting power.
5.4.6. J5 Connector - Rapid Connection to Capacitor
Quick-fit connector for connecting the motor starting
capacitor.
5.4.7. Double Connector J8 - Limit-Switch Quick Fit
Quick-fit connector for connecting the limit-switch. For
connecting both the MLS magnetic limit-switch and the
inductive limit-switch (Fig. 23 Ref. ) to the operator.

14
F+
+
= Sequential obstacle detection
F
FORCE:
Adjusts Motor thrust.
= minimum force
= maximum force
OPENING DIRECTION:
Indicates the gate opening movement
and makes it possible not to change the
motor connections on the terminal bo-
ard.
= Rightward opening movement
= Leftward opening movement
STATUS OF AUTOMATED SYSTEM:
Exit from programming, save data, and
return to gate status viewing.
= Closed
= Now opening
= At "STOP"
= Open
= Pause
= "FAIL SAFE" error
= Now closing
= Now reversing
= Photocells tripped
Display Function Default
Display Function Default
5.5.2. ADVANCED PROGRAMMING
To access ADVANCED PROGRAMMING, press key Fand, as
you hold it down, press key +:
• If you release key +, the display indicates the name of
the first function.
• If you release key Ftoo, the display shows the value of the
function that can be modified with keys +and -.
• If you press key F(and hold it down), the display shows the
name of the next function, and if you release it, the value
that can be modified with keys +and -is shown.
• When you reach the last function, press Fto exit the program,
and the display resumes showing the gate status.
The following table shows the sequence of functions
accessible in ADVANCED PROGRAMMING:
ADVANCED PROGRAMMING
MAXIMUM TORQUE AT INITIAL THRUST:
The motor operate at maximum torque
(ignoring the torque setting) at start of move-
ment. Useful for heavy leaves.
= Active
= Disabled
NOTE: Status will be displayed after two consecuti-
ve triggers of the safe input or two consecutive obstacle
detections from the inherent entrapment protection device
(encoder). In this status the operator will also set off the audio
alarm. Normal operation can only be resumed by breaking
the stop circuit or resetting power.
Fig. 33
5.5. PROGRAMMING
To program operation of the automated system, access the
"PROGRAMMING" mode with keys F,+and - on the cover.
Attention: before attempting to power up the system,
re-position the board's cover to avoid contact with high
voltage parts and to access the push-button keys on the
cover (Fig. 33).
BASIC PROGRAMMING
Display Function Default
FUNCTION LOGICS (see table of logics):
= Automatic
= "Stepped" automatic
= "Safety" Automatic
= Semi-automatic
= "Stepped" Semi-automatic
= Dead-man
= "B" Semi-automatic
= Mixed Log.(B opening / C closing)
PAUSE TIME:
This has effect only if automatic logic
was selected.
Adjustable from to sec. in one-
second steps.
Subsequently, display changes to minu-
tes and tens of seconds (separated by a
point) and time is adjusted in 10-second
steps, up to the maximum value of
minutes.
E.g. if the display shows , pause time
is 2 min. and 50 sec.
5.5.1. BASIC PROGRAMMING
To access BASIC PROGRAMMING, press key F:
• If you press it (and hold it down), the display shows the name
of the first function.
• If you release the key, the display shows the value of the
function that can be modified with keys +and -.
• If you press Fagain (and hold it down), the display shows the
name of the next function, etc.
• When you reach the last function, press Fto exit the program,
and the display resumes showing the gate status.
The following table shows the sequence of functions
accessible in BASIC PROGRAMMING:
Programming is divided in two parts: BASIC and ADVANCED.
+
-
F

15
FSW-OP, FSW-CL monitored
SAFE not monitored
FSW-OP, FSW-CL not monitored
SAFE monitored
FSW-OP, SAFE monitored
FSW-CL not monitored
FSW-CL, SAFE monitored
FSW-OP not monitored
FSW-OP, FSW-CL, SAFE monitored
Display Function Default
FINAL BRAKING:
When the gate reaches the opening or
closing limit-switch, a braking stroke can
be selected to ensure the leaf is stopped
immediately. If decelerations are selected,
braking starts when they finish.
At value, braking is disabled.
Time can be adjusted from to in
0.01-second steps.
= Braking disabled
from to = Timed braking
PRE-FLASHING (5 s):
Activates the flashing lamp for 5 seconds
before start of movement.
= Disabled
= Only before opening
= Only before closing
= Before every movement
CLOSING PHOTOCELLS LOGIC:
Select the tripping mode of the closing pho-
tocells.
They operate for the closing movement only:
they stop movement and reverse it when they
are released, or they reverse it immediately.
= Reverse on release
= Reverse immediately to opening
Display Function Default
OPENING PHOTOCELLS LOGIC:
Select the tripping mode of the opening pho-
tocells.
They operate for the opening movement only:
they stop the movement and restart it when
they are released, or they reverse it immedia-
tely.
= Reverse immediately to closing
= Restart movement on release
ENCODER:
The encoder operates as an anti-crushing
device. If the gate hits an obstacle during
opening or closing, the encoder immediately
reverses the gate leaf movement for 2 secon-
ds. If the encoder operates again during the
2-seconds reversing time, the movement stops
(STOP) without commanding any reversing.
Adjust the sensitivity of the anti-crushing system,
by varying the parameter between
(maximum sensitivity) and (minimum
sensitivity).
From to = Encoder active and sen-
sitivity adjustment
IMPORTANT: Do not set the sensitivity to
Pre-limit switch DECELERATION:
You can select gate deceleration before the
opening and closing limit-switches have been
tripped.
= Deceleration disabled
From to = Deceleration
enabled
Post-limit switch DECELERATION:
You can select gate deceleration after the
opening and closing limit-switches have been
tripped.
= Deceleration disabled
from to = Deceleration ena-
bled
FAIL SAFE:
This function allows to select wich safety inputs
will be monitored by the controller. it enables
a functional test of the photocells or safety ed-
ges before any gate movement. If the test fails
(device not present or not working are indica-
ted by the value on the display), the gate
does not start moving.

16
6. START-UP
Fig. 34
6.2. OPENING - CLOSING DIRECTIONS
Power up the system and set the opening direction on the
board (see Section 5.5.1).
If opening direction is to the RIGHT ( ):
OPENING limit-switch LED = FC1
CLOSING limit-switch LED = FC2
If opening direction is to the LEFT ( ):
OPENING limit-switch LED = FC2
CLOSING limit-switch LED = FC1
Note: for RF chain applications the wires on Mot1 and Mot2
(See Fig. 23) need to be reversed.
6.1. ELECTRIC CONNECTIONS
Make all electrical connections to the board as described in
Section 5, including grounding the operator (Fig. 34).
6.3. DETERMINING STOP POINTS AT TRAVEL
LIMIT
The 844 operator has a limit sensor switch which, by detecting
the transit of a reference applied to the rack, commands
the motor to stop. The device can be magnetic (Fig. 41) or
inductive (Fig. 42).
6.3.1. Magnetic Limit-Switch (MLS)
The MLS limit-switch detects the transit of two magnets fitted
on the side of the rack facing the operator.
Procedure for correct positioning of the two supplied magnets:
1. Check that the operator is in manual mode (see Sec.8).
2. Manually open the gate to within 3/4 to 2 inches of the
travel limit mechanical stop.
3. Fit the magnet (without removing the protective film from
the adhesive side) on the side of the rack facing the
operator, aligning the upper edges. Slide the magnet on
the rack in opening direction until the relevant LED turns
on (Fig. 22 and 41), then move the magnet forward an
additional 1 3/4 inches.
4. Manually close the gate to within 3/4 to 2 inches of the
travel limit mechanical stop.
5. Fit the magnet (without removing the protective film from
the adhesive side) on the side of the rack facing the
operator, aligning the upper edges. Slide the magnet on
the rack in closing direction until the relevant LED turns
on (Fig. 22 and 41), then move the magnet forward an
additional 1 3/4 inches.
6. Move the gate to its halfway travel point and relock the
system (see Sec. 9).
7. Find out the desired pre- and post-limit-switch decelera-
tion values (see Section 5.5.2) and run the automated
system for at least one complete cycle.
Display Function Default
Note 1: To reset the programming default settings, check
that the edge input is closed (SAFE LED ON), and
simultaneously press keys +, - and F, holding them
down for 5 seconds.
Note 2: Modifications of programming parameters take
effect immediately, whereas changes are saved to
memory only after you exit programming and return
to normal gate status viewing. If the equipment is
powered down before returning to status viewing,
any modifications will be lost.
ASSISTANCE REQUEST (combined with
next function):
If activated, at the end of countdown (see the
next function: "Cycle Programming") it effects
2 sec. (in addition to the value already set
with the PF function) of pre-flashing at every
Open pulse (job request). It can be useful to
set scheduled maintenance jobs.
= Active
= Disabled
WORK TIME (time-out):
It is advisable to set a value of 5 to 10 seconds
over the time taken by the gate to travel from
the closing limit-switch to the opening limit-
switch and vice versa.
Adjustable from to sec. in one-se-
cond steps.
Subsequently, display changes to minutes and
tens of seconds (separated by a point) and
time is adjusted in 10 second steps, up to a
maximum value of minutes.
Attention: the set value will not exactly
match the motor's maximum operating
time if decelerations are used.
PARTIAL OPENING:
You can adjust the width of partial leaf ope-
ning. from to .
For example, with pinion Z20, partial opening
can vary from 2' to 13'.
CYCLE PROGRAMMING:
To set countdown of system operation cycles.
Settable (in thousands) from to
thousand cycles.
The displayed value is updated as cycles
proceed.
GATE STATUS:
Exit from programming, save data and
return to viewing gate status (see Section
5.5.1.).

17
2
1
FC2
FC1
Fig. 35
FC2
FC1
Fig. 36
6.3.2. Inductive Limit-Switch
The inductive limit-switch detects the travel of the two steel
plates fitted on the top of the rack or the chain.
Procedure for correct positioning of the two supplied steel
plates:
1. Assemble the limit-switch by centering the plate with
respect to the threaded pins of the support (Fig. 36).
2. Check that the operator is in manual operating mode
(see Section 8).
3. Manually open the gate to within 3/4 to 2 inches of the
mechanical stop limit.
Attention: Due to the powerful magnetic fields produced
by the supplied magnets, do not place magnetic storage
devices (credit cards, magnetic tapes, floppy disks, etc) or
sensitive electronic equipment (watches, CRT monitors, LCD
screens, etc.) near the magnets.
Notes on Magnet Positioning
• To ensure correct operation, allow at least 3/4 inch from
the mechanical 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 magnets
must be from 1/4 to 1/2 inch.
• Magnets should be fitted on the rack and not on the
screws. If necessary, position the magnet at the side of
the screw and adjust decelerations (see Section 5.5.2) in
order to obtain the correct stop point.
Notes on Plate Positioning
• To ensure correct operation, allow at least 3/4 inch from
the mechanical 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.
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
6.4. INPUTS CHECK
The table below shows the status of the LEDs in relation to to
the status of the inputs.
Note the following: Led ON = closed contact
Led OFF = open contact
Check the status of the LEDs as per the following table.
Note: 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.
Table 2: Operation of the Signalling Status LEDs
8. Check that the gate stops approximately 3/4 to 2 inches
from its mechanical stop point. If necessary, correct the
position of the magnets and check that the stop point is
correct.
9. Mark the position of the magnets on the rack, and remo-
ve them.
10. Clean the rack on its fitting points, remove the film on
the adhesive parts of the magnets (Fig. 41 Ref. 1) and re-
position the magnets with the adhesive strip in contact
with the rack (Fig. 35 Ref. 2).
4. Allow the plate to move on the rack in opening direction
until the relevant LED goes off (Figs. 22 and 36); next,
move the plate forward an additional 1 3/4 inches and
secure it to the rack by tightening the screws.
5. Manually close the gate to within 3/4 to 2 inches of the
mechanical stop limit.
6. Allow the plate to move on the rack in closing direction
until the relevant LED goes off (Figs. 22 and 36); next,
move the plate forward by an additional 1 3/4 inches
and secure it to the rack by tightening the screws.

18
AB
Fig. 40
• Remove the vent screw (Fig. 40).
Fig. 39
Fig. 38
• Snap-fit the side panels, put the equipment's cover on
and secure it with the supplied screws (Fig. 39).
• After installation, apply the danger sticker to the top of the
cover (Fig. 38).
7. FINAL OPERATIONS
6.5. MECHANICAL CLUTCH ADJUSTMENT
In addition to its electronic safety devices (encoder and
force adjustment), the 844 operator is also equipped with a
mechanical clutch. The clutch doesn't need to be adjusted
in a typical application. It comes from the factory set to its
maximum strength, and can be left as it is for the majority
of applications. To adjust the operator's thrust and reversing
behavior use the force and encoder settings, as detailed in
Sections 5.5.1 and 5.5.2.
In case the clutch needs to be adjusted:
1. Cut electrical power to the operator.
2. Keep the motor shaft locked with a wrench and turn the
clutch adjustment screw with an Allen wrench or screwdri-
ver as shown in Fig. 37 Ref. A.
- To increase torque, turn the screw clockwise.
- To reduce torque, turn the screw counter-clockwise.
3. Power up the operator 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 supplied alternative spring. For spring
replacement instructions, see Fig. 37 Ref. B.
Fig. 37
6.6. TRAVEL LIMITS CHECK
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 the correct 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).
6.7. SAFETY DEVICES CHECK
Check for the correct operation of all safety equipment,
anti-crushing devices (ENCODER sensor), and accessories
used in the system.

19
Fig. 42
To prevent an involuntary pulse from activating the gate, cut
power to the system before re-locking the operator.
1. Re-close the release lever.
2. Turn the key counter-clockwise
3. Remove the key and close the lock protection door.
4. Move the gate until the release engages.
1. If the gate has to be operated manually due to a power
outage or malfunction of the automated system, use the
release device as follows:
2. Open the protection door and insert the supplied key in the
lock (Fig. 41).
3. Turn the key clockwise and pull the release lever as shown
in Fig. 42.
4. Open and close the gate manually.
Fig. 41
Fig. 44
Fig. 43
10.3. REPAIRS
For any repairs, contact an FAAC authorized repair center.
Check the operational efficiency of the system at least once
every 6 months, especially the efficiency of the safety and
release devices (including operator thrust force).
10.1. REMOVING BOARD AND TRANSFORMER
If you have to disassemble the transformer-board unit,
proceed as follows:
Remove all terminal boards and connectors from the board.
Unscrew the 3 screws from the board and the 2 from the
transformer. Lift the unit up and gently remove the transformer
from the couplings on the board as shown in Fig. 43.
10.2. OIL TOP-OFFS
Periodically check the oil level inside the operator. A once-
a-year check is enough for medium or low usage. For heavy
duty usage, a check every 6 months is recommended.
To access the tank, temporarily remove the plastic oil filler
cap (Fig. 44). Oil level is visually checked and must cover the
copper coil of the electric motor.
If more oil is needed, add it through the oil filler hole. Use
FAAC HP oil only.
8. MANUAL OPERATION
9. RESTORING NORMAL OPERATION
10. MAINTENACE

20
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Tab. 3/b
"S"cigoL SESLUP
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"E"cigoL SESLUP
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Tab. 3/d
"A"cigoL SESLUP
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Tab. 3/a
11. LOGICS TABLES