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107
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Dimensions (mm)
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Wiring diagrams
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General information
45
44
60
83
66
35 . 6
Technical information
Type
AlphaRex
3
D21
AlphaRex
3
D22
Cat. No.
4126 31
4126 41
Supply voltage
230 V
±
Frequency
50/60 Hz
Programme
24 hour or 7 day
No. of channels
1
2
Effective power
Approx 1 W
ca 1 . 5 W
consumption
Switching
capacity :
cos
ϕ
= 1
16 A 250 V
±
Contact
1 changeover
2 changeover
switch
switches
Parallel
compensation
600 W nax, 70µF
Switching step
1 second
Min. switching time
1 second
Accuracy
±0 . 1 seconds per day
Terminal capacity
Single strand 1 . 5 to 4mm
2
Programmes
56
28 per channel
Working reserve
1
5 years
Programme
memory
EEPROM
Summer/Winter
time
Auto
IP rating
IP 20
No. of 17 . 5 mm
modules
2
Operating temp.
–20 °C to +55 °C
Storage temp.
–20 °C to +60 °C
1 : For time and date only
Cat. Nos. 4126 31/41
Cat. No. 4126 31
Cat. No. 4126 41
AlphaRex
3
D21
Cat. No. 4126 31
AlphaRex
3
D22
Cat. No. 4126 41
• Start-up :
after applying the supply voltage, the time switch starts
automatically with the last selected function. The relay position is
set by the current programme
• Battery backup
- Backlighting
not active
- Data key
READ/WRITE only via the menu
• Start-up :
after applying the supply voltage, the time switch starts
automatically with the last selected function. The relay position is
set by the current programme
• Battery backup
- Backlighting
not active
- Data key
READ/WRITE only via the menu
• For safety :
when the time switch is connected to the mains supply
the contact should not be used on an isolated low voltage supply
and when the time switch is connected to the isolated voltage
supply the contact should not be used on the mains supply
OK
OK
-
-
+
+
Select menu, back to main menu,
Hold down > 1s = operating display
Select menu, back to main menu,
Hold down > 1s = operating display
Confirm selection or load parameters
Confirm selection or load parameters
Select menu options or set parameters
• Select menu options or set parameters
• Channel selection
C1 C2
0 6 12 16 24
0 6 12 16 24
2
4 1
AlphaRex
3
programmable time switches
digital for rail
4