Rex D21 User Manual

State of output

= On
= Off

± 1h C

S OK

R

1

Hand switch
Channel 1

Choose function

Summer- / winter

changeover

Setting the hours, minutes,

days and channels

Delete

Fixing the hours, minutes,
days, channels and conti­nuous switching

Programming Buttons

1

1 2 3 4 5 6 7

Actual or „On“ time

Weekday

Day number

„Off“ time

Symbol for

„Set actual time“

„Off“ days

Liquid Crystal Display

Technical data

Supply voltage: 230V 50/60Hz 120V 50/60Hz
Consumption: ca. 0,5W
Contact rating: changeover contact 16A 250V~µ cos ϕ= 1
Parallel compensation: 60VA max. 7µF
Accuracy: ±2,5s/d
Terminal capacity: single strand multi strand

4 mm

2

2,5 mm

2

Program pictures: 8
Battery reserve: 100h
Storage ambient: -10°C to +60°C
Working ambient: -10°C to +55°C

Time switch

NT 29 17 86 02

MicroRex D21

S

OK

+

Safty notes

• Installation of these products should only be undertaken by a qualified electrician.

• The operational and electrical safety is only guaranteed, if the product is installed using its proper
accessories, in a position as specified in the installation instructions.

• Any interference with the product makes the guarantee void.

• If the time switch is mounted near equipment where heat produced raises the local ambient above 55°C. Then a space should be put

between the time switch and the equipment.

Function

The MicroRex D22 is a microprocessor controlled digital time switch. Eight programs of your choice can be stored and used to control the automatic operation of your electrical equipment. Each indi­vidual weekday can have a separate program or you can have several days operating on the same „Block“ program. To program the MicroRex D22 a „picture“ is used and when this is complete the
chosen times are stored in the microprocessor memory. The MicroRex D22 makes available 2 separate switching channels. The summer-/winter changeover can be programmed for hand or automa­tic operation.

Presentation

Approximately 30 seconds after the supply voltage is connected the symbols
appear on the LCD.

Before any operations the complete memory must be reset.

2. Memory reset

1. Starting

This can only be done after a Reset.

Summer- / winter changeover can be made manually or automatically if set.
If manual changeover is required choose no during the date input. Automatic
changeover depends on your country / area. Choose the appropriate setting
for your country / area.

3. Setting date and summer- / winter changeover

L
N

6

7

8

3

4 5

1 2

Connection

press both at
the same time

The time switch memory is completely clear.

700W 700W 2500W 700W 2900W 900W

OK

OK

Otherwise use
to set another day

12. Correcting mistakes

(only in the mode of programmation)

S

S

S

S

OK

OK

OK

1 2 3 4 5 6 7

1 2 3 4 5 6 7

1

1 2 3 4 5 6 7

1 2 3 4 5 6 7

S

S

S

OK

OK

OK

S

S

OK

OK

S

S

OK

OK

S

1 2 3 4 5 6 7

1

1 2 3 4 5 6 7

1

1 2 3 4 5 6 7

1

1

1 2 3 4 5 6 7

1

1 2 3 4 5 6 7

C

S

OK

OK

S

OK

5

Press once

10.1 Terminating continuous
switching

Press once

Press until the
correct day is set

Set the Off hour

Press once

Press once

Press once

Set the On hour

Set the On minutes

S

S

OK

OK

OK

Press once

Set the Off minutes

Press once

C

S

S

OK

1 2 3 4 5 6 7

Press once

Press once

Press once

Actual time is now set

Press until the correct
hour is shown

Press until the correct minute is shown

The weekday will shown
automatically

E

A

Gb

no

H

1 2 3 4 5 6 7

Press until
display is as shown

S

Press as required

Display 1 = On
Display 1 = Off

+

Hold & Press
both buttons
together

Display 1
Display 1
The time switch will remain in continuous

„On“ or „Off“ position until it is changed.

Press once
The time switch returns immediately to
program mode

9.1 Terminating continuous switching

1

1 2 3 4 5 6 7

Press to change to off hour

Press once

Press once

Set off hour

Set off minute

Press once

Press several
times until correct
„picture“ is shown

Press until the
actual time is shown

Set other days
as required

Press once

If the clock is on the correct day press

This function only applies to channel 1
The switch condition must first be chosen

Press to give desired function
Display 1 = On
Display 1 = Off

Press

Press once

END

Press until actual
time is displayed

11. Summer-/ Winter changeover

This function is only available if no was
chosen during date input for
summer- / winter selection (see 3)

Press once

In the above example the time switch
stays „On“ for 14 days. At 0:00 hours on
the 15th day the time switch returns to its
program mode.

Press to choose the
number of days
(d1 to d99)

End of program

Press once

5.3 Single day programs

Press until this
display appears

Press once

Press once

Set On hour

Set On minute

5.2 5 Day Monday to Friday program

Press until this
display appears

Set times as 5.1 above

The switch condition must first be chosen

Display 1 = On
or 1 = Off

Press as required

END

only if it is
necessary

10. Continuous switching for a
chosen number of days

Press until the actual time goes forward
1 hour (summer) or back 1 hour (winter)

END

Set On day

Set On Minute

Press until the
correct year is set

Press once

Press once

Choose
(See table below)

Setting of the beginning of summer
code 1

End date setting code
code 0

Set the end date
as above

Press until the
correct month is set

Each program has an On- and Off-time.

5.1 7 Day block program. Each day the same

5. Setting switching time

Press until this
display appears

S

Set the year

Press once

Press once
The start date is set.

Set the day

Set the month

End of program

6. Check switching times

Press several times until
correct „picture“ is shown

Press until the
actual time is shown

7. Delete switching times

9. Continuous switching

Press to delete program
and set a new programm
or-

Press once to either

END

13. Checking the date setting

1

1 2 3 4 5 6 7

1 2 3 4 5 6 7

4. Setting actual time

Choice Summer

begins

Summer
ends

Country /
area

E

A

Gb

no

H

1STSunday
in April

4th Sunday
in October

last Sunday
in October

last Sunday
in October

last Sunday
in April

last Sunday
in march

only
North
America

GB

EU

No
changeover

No
changeover

Enter here the date for the beginning of
summer for your country / area as well as
the end of summertime. E.g. 31

ST

March is
shown for the beginning of Summertime. In
the following years it starts on the same day
irrespective of the date.

After setting the summer start
now set the actual time

The time switch will follow the next „On“ or
„Off“ program

8. On and Off manual operation

Code d

+

This function is not available if no was
chosen during date input for
summer- / winter selection (see 3)

S

OK

OK

1 2 3 4 5 6 7

1

S

S

OK

±1h

C

1 2 3 4 5 6 7

1 2 3 4 5 6 7

1

1