Timeguard TG77 Manual

INSTALLATION & OPERATING
INSTRUCTIONS
24HR / 7DAY
ELECTRONIC
TIMESWITCH
Cat. No TG77
Installation &
Operating Instructions

1
Output
ON light
Returns TG77 to
operating mode
with clock time
displayed
Decreases hours,
minutes, days/day
groups during
programming and
setting clock time
Increases hours,
minutes, days/day
groups during
programming and
setting clock time
Initiates countdown
time period
Initiates random
delay to both
start time and
stop time of every
programme
Increments
programming
steps and when
held pressed for
approximately 4
seconds initiates
clock set mode
Override to next
programme change,
also gives permanent
ON/OFF and also
suspends and
reinstates
programmes
Tamper proof
reset button
(use pen or
similar
implement)
1. General
The TG77 is an easy to programme electronic time controller with a
large 24 hour display, offering both 24 hour and 7 day programming
options. 20 ON/OFF programmes are available which can be made to
operate over all seven days (24 hour operation), one of seven
individual days and various combinations of days. Battery back up
retains programmes and clock time in the event of mains failure and
allows out of socket programming.
The unit has the advanced feature of random delay to both start and
finish of all programmes and also has a manually initiated Countdown
time period of up to twenty four hours during which output is ON.

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2. Features
● Plug-in control.
● 24 hour and 7 day programming options.
● 20 ON/OFF programmes operating over a wide choice of day
groups and individual days.
● Manual override until the next programme change.
● Permanent ON or OFF facility.
● Large display.
● Battery back up retains current time of day and programme
memory during loss of mains supply. Also allows programming out
of socket.
● Manual start Countdown facility.
● ON/OFF programmes can be suspended from operation.
● Optional random delay to both start and finish of all programmes.
● Output ON indicator.
● Shortest switching time of 1 minute.
● Programme review.
● Repeats programmes week after week continuously.
3. Battery
The unit has a factory fitted rechargeable battery to allow out of socket
programming and to give clock operation and memory back-up during loss
of mains supply. If the display is dim or not visible plug the TG77 into a live
socket for 4 hours before resetting and programming.
When not in use it is best to keep the TG77 plugged into a live socket to
ensure the best possible battery life.
4. Reset (RST)
The unit must be reset before programming for the first time or if the
unit has been left out of a live socket for more than 150 hours.
Press RST using a pointed object (eg a pencil).
Display will show its full set of characters and
clear to show:
The colon between hours and minutes will
flash and the seconds begin to advance.

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5. Setting or Adjusting Clock
Points to remember while setting time or programming:-
(Seconds display is not shown on diagrams for sake of clarity.)
The →and ←buttons alter the days/day combinations, the hours, the
minutes and programme numbers/ON or OFF designation. The ←
button also initiates the programme sequence for Countdown CTD
mode. The →button also initiates the ON/OFF programme sequence
and achieves easy SUMMER/WINTER time change when pressed at the
same time as the TIME button.
The →button increases the above value which is flashing and the ←
button decreases it. If the particular value required is towards the end
of a sequence (eg 52 for minutes) pressing the ←button can get to it
quicker (from the 00 position).
The →or ←button can be held down to provide fast advance or
reverse.
The programming process is achieved by alternate use of the SET and
→or ←buttons.
The setting sequence is as follows:-
(example used is 10:52 WE being set from a reset condition (see section
4)) If you wish to use the easy Summer/Winter time changeover
described in section 13 please set the time to GMT (Winter time).
Press the SET button for approximately
4 seconds and the day symbol will flash.
Press →until the display shows WE.
Press SET, display shows:
Press →until the hour digits reach 10.
Press SET, display shows:

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Press ←until the minute digits reach 52 (note the use of the ←
button being much quicker than the → button in reaching 52).
Press SET, display shows:
The TG77 is now in operation mode with the
time display and colon flashing.
6. Programming Timed ON/OFF Mode
20 ON/OFF programmes are available to the user. Any number up to
20 can be programmed, unused programmes must be left blank
( – – : – – ) and not programmed with zeros. Each of the programmes
can be assigned to work over the following days/day groups (shown
in order of presentation on the TG77 programming screen):-
MO TU WE TH FR SA SU (24 hour operation)
MO THROUGH TO SU (individual days)
MO TU WE TH FR
SA SU
MO TU WE TH FR SA
MO WE FR
TU TH SA
MO TU WE
TH FR SA
The programming sequence is as follows:-
(example used is 12:10 ON 16:05 OFF MO TU WE)
Press →, display shows:
Denotes flashing symbol(s).

5
Press SET, display shows:
Press →, day(s) options change accordingly
to above sequence (to retrace the options
press ←) when required option is reached
(ie MO TU WE) then
Press SET, display shows:
Press →, hour digit(s) advance (to retrace
hours press ←) until 12 is reached then
Press SET, display shows:
Press →, minute digits advance (to retrace
minutes press ←) until 10 is reached then
Press SET, display shows:
Press →, display shows:
The OFF time and day(s) for the first
programme can now be set.
Press SET, display shows:
Press →, until day(s) option reaches
MO TU WE on the display
Press SET, display shows:

6
Press ←until hour digits reach 16 then
Press SET, display shows:
Press →until minute digits reach 05 then
Press SET, display shows:
Press →and display moves to the next
ON time of the programme (2) in the
sequence of 20 showing:
The TG77 now has the first programme locked into memory and is
ready to receive additional programmes if required. When
programming is complete press the TIME button to return to the
operating mode. When programming additional programmes the
choice of day or day group is always totally open.
Note: Day/Days have to be set independently for each ON and OFF
entry. This makes it easy to set programmes which traverse midnight
or which carry on for more than one day.
7. Suspending A Programme
From operating mode press →repeatedly until the ON or OFF
programme to be suspended is reached (button ←can be used to
retrace steps if necessary). Press the button and display will reset
to – – : – – then press the TIME button to return to operating mode.
To reinstate programme again use →to reach suspended programme
and press to retrieve suspended programme then press the TIME
button to return to the operating mode.
ON and OFF halves of the same programme have to be suspended
seperately.

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8. Reviewing and Changing ON/OFF
Programmes
Press →repeatedly until the ON or OFF programme requiring
amendment is reached (button ←can be used to retrace steps if
necessary). Press the SET button repeatedly until the day(s)/hours/
minutes are flashing then use the →←buttons to make the
amendment. When this is complete press the TIME button to return
to operating mode.
9. Adjusting Clock Time
Press SET for approximately 4 seconds and the day symbol will flash.
This can be changed using →←buttons as required. Further brief
pressings of the SET button show the hour and minute settings
flashing and these may be changed in the above way if required.
Then press the SET button and the display will show the operational
mode.
10. Countdown Mode
This enables the TG77 to complete a timed ON period from a
manually initiated start. The period can be from 1 second to 24 hours.
The TG77 can be programmed as follows:-
(example used 1 hour 10 minutes 30 seconds)
Press ←, display shows:
Press SET, display shows:
Press →to set hours to 1
Press SET, display shows:

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Press →to set minutes to 10
Press SET, display shows:
Press →to set seconds to 30
Press SET, display shows:
Now press CTD to start the countdown procedure. Output light will
turn ON and the appliance plugged into the TG77 will be energised
while the display counts down to zero when the appliance will be
turned OFF. Before pressing CTD ensure the TG77 is plugged into a
live socket and the appliance is switched ON. If the CTD button is not
pressed within 10 seconds of the previous use of the SET button the
display will revert to normal operation mode. To retrieve the setting
press ←and then SET after which countdown can be started by
pressing the CTD button.
11. Operating the TG77 in Timed
ON/OFF Mode
Ensure that the unit is in operating mode. Press the button until
the left side of the display shows AUTO and either ON or OFF as
appropriate for the programme(s) at that time of day and day of
week. Then plug the TG77 into a live socket, plug the appliance to be
controlled into the TG77 and ensure the appliance is switched ON.
The TG77 will enact all programmes stored on a continuous basis.
To override the unit at any time press the button twice. The
display will change from AUTO OFF to AUTO ON or from AUTO ON
to AUTO OFF and the override will last until the next programme
change.
To go to a continuous ON or continuous OFF condition press the
button repeatedly until either ON or OFF as appropriate is on the
display without the AUTO symbol.

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12. Random Delay of Programme Start and
Finish
By pressing the RND button the RND symbol appears in the top
right of the display and a random delay to both start and finish of ON
periods will result. The random delay varies anywhere between 2 and
32 minutes to give the impression that a standard timeswitch is not in
use.
13. Summer/Winter Time Change-over
By pressing the Time and ←buttons at the same time the time will
advance 1 hour and the +1h symbol will appear over the second
display. By pressing the buttons at the same time once more the
symbol disappears and the time moves back 1 hour.
To use this feature the TG77 needs to have the clock time set to GMT
or Winter Time.
14. Change from 24 hour to AM/PM Format
Press the “Time” button for around 3 seconds and both the “Time”
display and all stored programmes will be changed from 24 hour to
AM/PM format.
Press the “Time” button again for around 3 seconds and both the
“Time” display and all stored programmes will change back to 24
hour format.
After pressing the RST button to reset the unit, it will allways come up
in 24 hour format.

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15. Specifications
Operating Voltage: 230V 50Hz.
Switch Rating: 13A resistive, 2A inductive,
400W filament lamps.
100W fluorescent or low energy lighting.
Operating Temperature: 0°C to 40°
Battery: Factory fitted rechargeable.
Provides up to 150 hours of clock operation
and programme memory back up during
mains failure.
EC Directives: Conforms to 73/23/EEC and 89/336/EEC.
Not suitable for discharge lighting (e.g. SON or metal halide).
Installation &
Operating Instructions
3 Year Guarantee
In the unlikely event of this product becoming faulty due to
defective material or manufacture, within 1 year of the date of
purchase, please return it to your supplier with proof of purchase
and it will be replaced free of charge. In the second and third
years or any difficulty in the first please contact our helpline on
020 8450 0515.

For a product brochure please contact:
Timeguard Ltd.
Victory Park, 400 Edgware Road,
London NW2 6ND
020-8452-1112
or email [email protected]
A Group company
HELPLINE
020-8450-0515
or email [email protected]
67.058.317 (Iss.1)
For assistance with the product please contact: