NT 29 07 37 05
1200W 1200W 2300W 1800W 2300W 100W 1800W
●
LEXIC
™
®
Time switch
Rex2000 D21SN
037 81, 037 82, 037 83
OK
MENU
SET TIME CHECK... ON
PROG DATE NEW...OFF
SU/Wi
D/M/Y
1234567
6
24
18
12
L
N
1
0
1
0
t
t
1
0
1234567
6
24
18
12
2. Setting actual time
Button
activates the menu.
Select SET TIME... with button
and confirm
with button
. Confirm once more
SET TIME with button
.
Set actual hour with buttons
and confirm
with button
.
Set actual minute with buttons
and confirm
with button
.
OK
OK
OK
OK
MENU
SET TIME
1234567
1234567
6
24
18
12
Program
control
contact
Technical data
037 81
037 82
037 83
Supply voltage:
230V 50/60Hz
120V 50/60Hz
24V AC/DC
Consumption:
ca. 0,8W
Contact rating:
changeover contact 16A 250V~µ cos
ϕ
= 1
Accuracy:
±1 s/day under typical installation conditions
Terminal capacity:
single strand multi strand
1,5 to 4 mm
2
1,5 to 2,5 mm
2
Program pictures:
56
Battery reserve:
10 years
Control line length:
max 20m
Control signal:
230V 50/60Hz / control impuls
≥
400 ms
Storage ambient:
-20°C to +60°C
Working ambient:
-20°C to +55°C
Press
together
MENU
Press all 5 buttons together.
First release button
, after 3 seconds release
all other buttons.
MENU
State of contact
ON
OFF
Safety notice
• Assembly and installation of this product may be carried out by a specialist only. • To guarantee electrical safety the product has
to be installed in the applicable product specific environment with all accessories included in the delivery. • To ensure electromag-
netic tolerance as required by the provisions to identify CE- products in applicable ambits of EMV 89/336/ CE-lines, adequate pro-
tective measures have to be found for consumers of high voltage dropout - current ( for example motor run devices or lamps
exceeding power rating of 800W ) or commutation – times < 24 seconds. • Modification of the product results in the loss of all war-
ranty claims. • In case the time switch is installed between exothermal facilities causing an ambient temperature of over 55°C, a
vacuum has to be created between the exothermal facilities and the time switch ( f. e.
1
⁄
2
vacuum module, stock number 044 40 or
1 vacuum module, stock number 044 41.
Presentation
Real time,
switching time
Menu
Summer/winter
Day/month/year
Actual day of the week
or program day
Symbol for
active control contact
Segment display of the
existing program
1 segment = 30 minutes
Button Menu
activates the menu or
breaks off the process
Button moves the flash
Symbol for automatic operation
Symbol for manual override
Symbol for continuous override on
Symbol for continuous override off
Button OK
confirms the input
Button minus and plus
changes the values
Reset 1
Switching program remain
Reset 2
Switching program deleted
1. Starting
Connection
Function
The Rex 2000 D21SN is a digital 7 day time switch with a circular segmented display for general rail mounting use.The
time switch is provided with a control contact which can control the relay output for a set time up to 23h59m. Up to 8 pro-
gram pictures can be set. A program picture incorporates both On and OFF time. If no button is pressed during program-
ming for 60 seconds the time switch goes back to the start position. The copy function enables program to be copied to
other days. Minimum switching time is 1 minute. The delay time can be set from 0:00 to 23h59. The switching times are
protected but can be overlaid by other programs. Programs are displayed with a minimum segment size of 30 minutes.
The time and the week days are presented digitally. The summer-/winter changeover can be programmed for hand or
automatic operation.
For saftety, when the
time switch is connected
to the mains supply the
contact should not be
used on an isolated low
voltage supply. When
the time switch is con-
nected to the isolated
voltage supply the con-
tact should not be used
on the mains supply.
Function diagram
control
contact
Relay
output
The control signal has to be available
≥
400ms for the control contact to
release a switching order.
The control contact takes priority over hand on/off and continuous swit-
ching. The delay time starts when the control signal is switched off.
delay time
Operating instructions
GB
Parallel com-
pensation:
60VA max.
7µF
Supply failure
Mains failure will be displayed by no U.
Buttons are inoperative. Reset is possi-
ble.
