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Digital day time switch 7LF4 1.(WA-EKF 3161/05.96/S:MMS/D:Str./80.10.0754.7)

7LF4 110 230 V AC 1 channel without special functions

Digital week time switch 7LF4 1.7LF4 111 230 V AC 1 channel7LF4 112 24 V AC/DC 1 channel without special functions7LF4 113 12 V AC/DC 1 channel7LF4 114 230 V AC 1 channel with special functions7LF4 120 230 V AC 2 channel without special functions7LF4 121 230 V AC 2 channel with special functions

Operator guidance step-wise, self-explanatoryIf you are not yet familiar with the display and functions of thetime switch, please first read the section Point 8.Data is entered in dialog with the timeswitch and runs as shownin the example:

Opens the programming mode.

1 digit in the display flashes.

Moves the flashing display digitforwards and backwards.

Changes or enters a value in theflashing display.Complete data is also saved withnext.As confirmation, you get a new,empty display for further inputs.

Closes the programming mode.

Saves the data if it has been com-pletely entered.Aborts the programming procedure ifthe data is incomplete. However, it isnot saved.Updates the switching state.

Contents Reset, general Read, change, delete Current time (date and time) Programming Manual switch functions Special functions Summer time/winter time switchover Display/control elements Technical data

1 Reset funcitonBefore putting into operation for the first time,we recommend that you carry out a complete reset.

Press both keys simultaneously!

Release clear.

Keep change pressed for approx.3 seconds until display.

All data is irretrievably deleted withthis operation!

2 Read, change, delete2a Read, Change

Opens the programming mode

Move forwards or backwards to read

Change the time or a switching timeas required

Closes the programming mode

or

or

or

and

or

or

or

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2b Delete Prog

Opens the programming mode

Move forwards or backwards to theswitching time to be deleted

Press in order to delete the displayedswitching time

Closes the programming mode

3 Current time (year, day, month, hour and minute)

These inputs must be entered sothat the time switch can execute theswitching commands correctly.

Example: 25.08.96,14:37

Opens the programming mode

Displayof weekdays only with weektime switch.

StartSummer time

EndSummer time

Summer/winter automaticStandard: Last Sunday in March andin October (Status 1996)Change the summer time/winter timeswitchover in other procedures seePoint 7.

Closes the programming mode

The colon between the digits flashesevery second. The day of the week iscalculated and the summer timeidentifier is displayed.

4 Programming

A separate switching program can bestored for every cannel/switching output.Prog 1; Prog 2

Opens the programming mode

If switching commands are alreadystored, switch forwards with next untilthe next free memory location isdisplayed.

The number 1 flashes.

Switching commands for the day clockare entered on the same way, but onlythe hour, minute and switching state.

Day clock example: 6:30, ON

Week clock example:Channel 1, 6:30, ONMonday to Friday

Special functions with flashingON or OFF-symbol see Point 6

The switching command is saved and thenext free memory location 02 is dis-played at the same time. Further switch-ing commands are programmed in thesame way and are assigned to the mem-ory location number in ascending order.

Closes the programming mode

or

YearDayMonth

flashes

flashes

HourMinute

Memory locationnumber flashes

Correspnods to Prog. 1

HourMinuteON

flashes

flashes

HoursMinuteMondayTuesdayWednesdayThursdayFridaySaturdaySundayON

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5 Manual switch function

The current switching state for each channelis influenced separately with .Use of the manual switch does not changeany of the data saved in "4 Programming".

Opens the manual switch functionMeaning of the display for channle 1 or 2

Closes the manual switch function,relays switches in accordance with display.

6 Special functions only Type 7LF4 114 and 7LF4 121

Pulse switching commands, from 1 to 59 sec.(only as ON function) e. g. 5 seconds

Next memory location is displayed,e.g. 02 flashes

The 1st digit flashes

= Cycle switching commands can be avtivatedfor a particular time. Start and end = ON andOFF command. Cycle duration ON = andcycle duration OFF = are selectablefrom 1 to 99 minutes.

Next memory location is displayed,e.g. 02 flashes

The 1st digit flashes

Next memory location is displayed,e.g. 03 flashes

The 1st digit for the minute input flashesExample: 3 min ON

Example: 20 min OFF

To illustrate:

Switching off takes place at the cycle end16:00.

7 Summer time/winter time switchover

Opens the programming mode

A = Automatic/statutory (for 1996 - 31.03. and 27.10.)

H = Semi-automaticFreely selectable. Switchover alwaystakes place on the entered dateInput with next and changeNo switchover occurs when every digit is 0

C = CalculatesFreely selectable. Switchover occurs on the same weekday in the calendarweek e. g. input 28.10.9628.10.96 is/was a Monday.1997 is switched in the same calendarweek on Monday 27.10.97 etc.Input with next and change

Closes the programming mode

Example:Cycle OFF 16:00

or Program sequence, automatic

Manual switchingDuring the next switching command,automatic switching to programrunning takes place and the programsequence is updated.

ON

OFF

ON

OFF

Continuous ON

Continuous OFF

1x

1x

10x

or

Cycle time ON

Pulse

2x

ON Cycle

flashes

1x

ONOFF

OFF Cycle

Cycle time OFF

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8 Display and control elementsAssignment function of the digits and symbols

Cycle time ON or OFF

Pulse time

Minutes

Month Current date Start, end of summer time

Hours

Calendar date Current date Start, end of summer time

Days of the week96 = Year No.01 = Memory location No.

Assignment function of the symbols

+ date Input, change, current date

Input, change, current time

date Input, change, summer time/winter timeswitchoverSummer time period

Winter time period

Flashes in clock mode

Prog Input, Change, Read, switching times

Switching state OFFSwitching state ONPulse function - only ON commandsCycle switching times ON and OFFCycle duration ONCycle duration OFF

Control elements

Opens and closesto set and change date and time summer time/winter time switchover

Opens andcloses for programming reading changing deleting

Flashing display digits move forwards move backwards change Opens and closes for changing the switching states (channel 1 or 2)

9 Technical data/connection

Connection Switching capacity Ambient temperature Running reserve

see unit imprint

Charging duration > 24 h Protection class II Running accuracy typically 1 s/day Switching output 1 or 2 changeover contacts,

potential-free Memory location 12 Type 7LF4 110

28 Type 7LF4 111, 112, 113, 114 42 Type 7LF4 120, 121

occupied, display FULL Days of the week free block formation,

only week time switches Sealable front glass

No switching commands may be programmed between 2:00 and3:00 on the dates of summer time/winter time changeover in thespring and fall.

Preselection ofspecial functionsDeleting thememory location