Excel Light Switch
and Timer
24 hour and 7 day
Cat XL770T & XL770TH (horizontal)
The Cat XL770T & XL770TH timer switch simply replaces a normal
light switch and provides automatic switching of incandescent,
fluorescent, halogen or dichroic lights as well as fan motors.
A multitude of switching options can be carried out over a
7 day period.
Features
■
Simply replaces a standard light switch.
■
Operates as a normal light switch - or can be quickly switched
to ‘automatic’ for timer control.
■
If required, several may be used in key rooms of the house to
simulate a ‘lived in’ appearence.
■
Has ‘random’ setting to simulate ‘lived in’ situations when the
home is vacant.
■
Accurate 24 hour digital clock.
■
Backlight turns on with first button press.
Specification (at 25ºC)
Supply voltage:
230-240V a.c. 50Hz
Setting options:
Up to 8 on/off times per day
Max and min load:
See table below
Operating temperature
0 to 50ºC
Load Type
Min Load
Max Load
Incandescent &
240V Linear Halogen
10W
500W
240V GU10 Halogen Downlights
Not suitable*
Compact Fluorescent
150W**
500W
Linear Fluorescent
(Electronic Ballast)
150W**
500W
Linear Fluorescent
(Magnetic Ballast with Power Factor Correction)
40W***
500W***
Linear Fluorescent
(Magnetic balast without Power Factor Correction)
100VA****
500VA****
Low Voltage Halogen
(Electronic Transformer)
10W
500W
Low Voltage Halogen
(Magnetic Transformer)
10W
400W
Fan Motor
10VA
500VA
* GU10 240V Halogen Downlights can damage the XL770T when
they fail, and are therefore not recommended for use with this product.
** A minimum load of 10W can be achieved if a resistive load is
connected in parellel with the fluorescent load. This can be, for
example a resistor or incandescent lamp rated at least 10W.
*** Power factor correction capacitors must be placed on the
line side of the XL770T. If this is not possible then they should
either be removed, or a 36W magnetic ballast should be
connected in parallel with the fluorescent load, to prevent
damage to the XL770T.
**** Refer to the following table for VA ratings when power factor
correction is not used:
PRODUCT
INFORMATION
Tube Size
Effective load
1 x 15W
85VA
1 x 20W
85VA
1 x 30W
85VA
1 x 40W
105VA
Tube Size
Effective load
1 x 65W
170VA
1 x 80W
210VA
2 x 20W
185VA
2 x 40W
210VA
Note:
1. This product cannot be used for two-way switching.
2. This product cannot be used with a light dimmer.
Installation
The XL770T & XL770TH is installed in the same way as a normal
light switch. A wiring diagram is shown on page 4, (Fig 3).
12:30
8
X
Sun
X
Mon
X
Tue
X
Wed
X
Thur
X
Fri
X
Sat
ON
OFF
ST
Random
Operation
Flashing timer.
Programs may be
altered when timer
is in this mode.
Shows whether
program is enabled
or disabled.
Summertime
switches to daylight
saving.
ON and OFF
for timer settings
Flashing number
represents
program(1 to 8)
Time & on/off
settings.
Fig 2.
1
MAN
AUTO
Set Day Hrs Min Man
We
OFF
12:30
Reset.
Switch operates
only in manual
mode.
Auto: switches on/off
in timer mode.
Man: manual operation
enables switch,
at left, to function.
Example: Cat XL770T
Fig 1.
N.B.
If connected incorrectly or if load exceeds the above values,
an internal fuse will rupture, rendering the unit inoperable.
WHAT TO DO IF THE DISPLAY IS BLANK
When this unit is not connected to power for a long period
of time, the back-up battery will run down and the display
will go blank. When power is re-connected, wait for about 20
minutes for the internal battery to charge up before attempting
to program the unit. After this time, the display may still not
return to normal. If this should happen, press the reset button,
see Fig 1, using a small insulated object.
This procedure will erase the memory contents of the unit.
