background image

Reset 2

Switching programs deleted

Press

together

Hold          , and let

free

Hold           for 5 seconds, then let free

LEXIC

®

NT 29 17 54 02

RondoRex w21

12

Safety 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 (distribution panel, surface or wallbox (front of panel).

• 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 (e.g. 

1

2

space module code 044 40 or 1 space module code 044 41).

Function

The RondoRex w21 is a digitall 7 day time switch with a round segmented display for general rail mounting use. Up to 4 program 
pictures per day can be set. A program picture incorporates both on and off time. The copying function enables program to be copied to other days.
Different programs can be set on each day. The minimum switching time is 1 minute. Program pictures are protected but can be overlaid by other
programs. Programs are displayed with a minimum segment size of 15 minutes. Time of day and weekday number are 
digitally displayed.

1     2

3    4    5

24

18

6

12

1

24

18

6

12

1

18

3

C

6

12

24

Pr

Time switch

Operating instructions

Technical data

036 84

036 85

036 86

94 41 78

Supply voltage: 

230V~ 

120V~

24V~

12V DC

Frequency:

50/60 Hz

Consumption:

ca. 0,6W

Contact rating: 

1 changeover contact 10A 250V~µ cos 

ϕ

= 1

Parallel compensation:

not allowed

accuracy: ±2,5s/d
Terminal capacity:

single strand

multi strand

1 to 4 mm

2

0,5 to 2,5 mm

2

Program pictures: 

28

Battery reserve:

20h

Storage ambient:

-10°C to +60°C

Working ambient:

0°C to +55°C

1. Starting

Presentation

Connection

Reset 1      Switching programs remain

Press

together

Blinking clock symbol = set time of day

Constant clock symbol = Time switch running

Setting days, hours, minutes, on and off times

Accepting the on and off times, 
manual switching

Real time, set on time or set off time

State of contact:

= On /

= Off

Blinking hand symbol = continuous manual operating

Constant hand symbol = manual override

Symbol for program input or interrogation

Change from day to hour, minute, programming, 

switching time, copying programs

Actual day of the week or program day

Segment display of the existing program

1 segment = 15 minutes, 4 programs per day max.

GB

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