Accessories; Photocells (Optional) - LiftMaster CB22 Instructions

ACCESSORIES

PHOTOCELLS (OPTIONAL)

The photocells are for safeguarding the gate and must be used. The
fitting location depends on the gate's design. EN12453 specifies that
a pair of photocells must be installed at a height of 200mm; a second
pair must be installed in the same position at a height of 700mm. A
third pair of photocells can be optionally installed. The photocells
consist of a transmitter and a receiver and must be opposite each
other. The housing of the photocell (plastic) can be opened using a
screwdriver. The photocell is mounted on the wall using small screws
and wall plugs. It is possible to use two different photocell systems.
(see Dip switch description). To enable the "Automatic closing"
function, the Chamberlain failsafe photocell must be installed. A
combination of photocells is not possible. The Chamberlain failsafe
system (2-cable system) has small LEDs (light) that can be seen from
the outside on both sides to indicate the status of the photocell. Two
Chamberlain failsafe photocell models are available. The one model
is ideal for walls lying opposite. The other model is ideal for the inside
of the gate, because fittings are already available.
Diagnosis at the Chamberlain failsafe photocell
LED constant = OK
LED flashes = photocell disables control board
LED off = no current, incorrect connection or polarity
Diagnosis on the control board
LED off = OK
LED on constantly = control board disables
LED flashes = OK no photocell connected
Cable cross-section: 0.5 mm
Voltage: 12/24 volts AC/DC.
Do not use any fixed copper lines. Do not lay any 230 volt cables in
parallel and do not lay any 2 cables in the same cable trunking.
JUMPERS
Programming of failsafe photocells model 771E/770E
1.Before the Initial Setup
2.When connecting or removing photocell(s)
- Switch off control board ( disconnect from current)
- Slip jumper on designated pins
- Dipswitch 5 to "ON"
- Connect photocell(s) according illustration
- Reconnect control board, wait short-time
- Pull jumper, wait short-time
Done! (The number of photocells connected are stored)
Programming of relay photocells such as 100263
The control board must be disconnected from the mains for a few
seconds. All terminals to which no photocell is connected must be
bridged with COM. (16-19,17-19,18-19). The power supply for the
relay photocell of terminals 14-15. Dip switch 5 must be at OFF.
The jumper must be unplugged.
Note: Relay photocells are no longer permitted for new installations
as per EN12978, because they cannot perform self-checks (failsafe).
Operation without photocells
DANGER: Not permitted for normal operation. In this case contact
strips must safeguard the gate.
The control board must be disconnected from the mains for a few
seconds. Terminals 16-17-18-19 must all be bridged. Dip switch 5
must be at OFF. The jumper must be unplugged.
Note: It is not possible to combine different photocell models.
2 or more.
open/öffnen/ouvrir/open
close/schliessen/fermer/sluiten