Danfoss 811 User Instructions

Seven Day Single Channel Electronic Timeswitch
Models 811 and 851
User Instructions
DESCRIPTION
Models 811 and 851 are identical in appearance except for the model
number shown on the facia.
The Day and Time are displayed as fi ve digits on the liquid crystal display
(LCD).
The fi rst digit in its separate window marked Day will be a numerical from
1 to 7 which may be allocated in sequence to the days of the week at the
user's discretion. The normal convention is Monday = 1, Tuesday = 2 .........
Sunday = 7.
The remaining four digits in the window marked Time will display the time
to a resolution of one minute from 0000 to 2359.
A short 'bleep' will be heard when a keypad is pressed. In addition when
a numeric keypad is pressed the associated digit on the LCD will either
blink or change.
There are fi ve red indicator lights. Four are associated with the keypads
'Extend', 'Enter on', 'Enter Off ' and 'Crop', and one labelled 'Output'.
The 2 position selector switch may be set to Off to override the programmes
or it may be set to Auto to follow the programme which has been set.
The programme indicator lights will switch on and off to follow the set
programme events in both the selector switch positions but the output
status indicator light will only be on if the selector switch is at Auto and
either the Enter On or Extend indicator lights are on.
If the Enter On and Crop indicator lights are On the output status indicator
light will be off .
It is recommended that the key be removed from the keyswitch to prevent
unauthorised or accidental changes to the settings. The key can only be
removed when in Run position.
TIME OF DAY
The mains electricity supply must be ON, the key inserted and turned
to Set Time position before carrying out the operations detailed below.
When the timeswitch is fi rst connected, or when the battery has been
allowed to discharge fully, and the mains electricity supply is switched ON
a dash (-) will be displayed in each of the fi ve digit positions.
Decide which day of the week you wish to assign as Day 1.
Press the number key representing the current day of the week (listen for
the 'bleep').
The remaining days will be automatically numbered in sequence.
Key in the time using four keypads e.g. 8:30 a.m. must be keyed as
0 8
and 6:15 p.m. as
1 8
The unit will not allow the entry of a spurious day or time e.g. day 8 will not
be accepted nor will a time entry of 3600. Depression of an out of range
key will not register on the display; the LCD digit will blink but remain
unchanged until an acceptable number is keyed.
DO NOT PRESS ANY FUNCTION KEYPADS.
Returning the key to the Run position will enter the time shown on the
display.
3 0
1 5
CAUTION: The unit operates at mains voltage and should only be opened by a
qualifi ed engineer after disconnection from the mains supply.
Day of Week Display
Time of Day Display
Day Time
4 2I08
7 8 9
4 5 6
1 2 3
0
Verify Cancel
10 6 Function
Numeric
Keypads
Keypads
SETTING SWITCHING TIMES
The mains electricity supply must be ON, the key inserted and turned to
the Set Programme position before carrying out any of the operations
detailed below.
Initially the display will show
E E E E E
indicating that the memory is empty.
Since the timeswitch is capable of automatically carrying out up to 200
switching operations it is recommended that the required programme be
tabulated before setting is commenced, noting that the day number on
display is the current day of the week. A table is provided for this purpose.
It is not essential to key in the programme in sequence since it will
automatically be sorted into chronological order.
To set a programme event:
First press the number key representing the day of the week to be
programmed.
Secondly, key in the time using four numeric keypads in the range 0000
to 2359.
Finally press 'Enter On' or 'Enter Off ' to enter the required event into
the memory.
The unit will not allow the entry of a spurious day or time e.g. day 8 will not
be accepted nor will a time entry of 3600. Depression of an out of range
key will not register on the display; the LCD digit will blink but remain
unchanged until an acceptable number is keyed.
Proceed with the programming of every event using the same entry
sequence.
If an attempt is made to exceed 200 programme events then the display
will show
F F F F F
indicating that the memory is full.
Programme
Indicator Lights
Output Status
Indicator Light
851
811 or 851
Auto Off
Extend
Output
Enter On
Enter Off
Set Time
Run
Crop
Set
Programme
2 Position 3 Position
Selector Keyswitch
Switch
Model
1