VDH ALFA 70-KLEP User manual

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User manual
ALFA 70-KLEP
Air valve control
VDH doc. 080594 Version: v1.0 Date: 24-04-2008
Software: ALFA70-KLEP File: Do080594.WPD Range: 0-600 sec.
*Installation.
On the upper side from the ALFA 70-KLEP is shown how the input, supply and relay should be
connected. A self test isstartet assoon asthepower supply isconnectedtoALFA 70-KLEP. After the
self test the normal operation will start.
*Control.
The ALFA 70-KLEP can be controlled by four push buttons on the front:
up - Raise the value
down - Lower the value
set - Read out and change the pause time
sec. - Read out the actual puls or pause time (Hidden key)
*Working description.
Only the active valves (see P01 till P03) are working together in the sequence 1-2-3-1-2-3 etc. (F.i.
if only valve 1 and valve 3 are active the sequence will be 1-3-1-3 etc. )
The first active valve always starts with the pulse time (adjustable with parameter P10), hereby the
corresponding dot will flash and the upper segment from the corresponding display will be on. After
thepulse timestarts thepausetime(canbereadoutwith theSET keyandchangeablewith UP and/or
DOWN key as long as the SET key is pushed.) The dot stays flashing while the lower segment from
the display is on. (See drawing below.)
From the not active valves the middle horizontal segment is on.

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*Read out and change the pause time.
By pushing the SET key the pause time appears on the display. By pushing the SET key and the UP
or DOWN key simultaneously the time can be changed.
The pause time is adjustable from 0 till 600 seconds.
If no key is pushed for more than 10 seconds the ALFA 70-KLEP returns to it’s normal status.
*Read out actual pulse and pause time.
By pushing thehidden sec. key thedisplay will show how long the actual pulse or pausetime will last.
If no key is pushed for more than 10 seconds the ALFA 70-KLEP returns to it’s normal status.
*Adjusting internal parameters.
By pushing the down key formorethan 10 seconds the internal parameter menu will be entered. On
the display appears ‘P x’.
Withthe up or down key the requiredparameter canbe selected (see the table forthe parameters).
Whenthe required parameter isselected, the valuefrom thisparameter can been shown by pushing
the set key. By pushing the up and down key the value can be changed.
If no key is pushed for more than 20 seconds the ALFA 70-KLEP returns to it’s normal status.
*Error messages.
On the display from the ALFA 70-KLEP the following error messages can appear:
EEE - Adjustments are lost. Solution EEE:
- Reprogram the adjustments.

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*Technical details.
Type : ALFA 70-KLEP
Range : 0-600 seconds (1) pause time
0-60 seconds (0,5) pulse time
Supply : 12Vac 50/60Hz (-5/+10%)
Read out : 3-digits 7-segments display
Relay : Ry1 = valve-1 SPST(NO)250V/8A (cos =1) of 250V/5A (cos =0.4)
Ry2 = valve-2 SPST(NO)250V/8A (cos =1) of 250V/5A (cos =0.4)
Ry3 = valve-3 SPDT(NO,NC) 250V/8A (cos =1) of 250V/5A (cos =0.4)
Control : by push buttons on the front.
Front : Polycarbonate IP65
Sensors : n/a.
Dimensions : 35 x 77 x 71,5mm (hwd)
Panel cut out : 28 x 70mm (hw)
Accuracy : n/a.
- Provided with memory protection during power failure.
- Connection with screw terminals on the back side.
- Special versions are available upon request.
*Parameters ALFA 70-KLEP
Para-
Meter Description Range Default value
01
02
03
Valve-1 active (0=no, 1=yes)
Valve-2 active (0=no, 1=yes)
Valve-3 active (0=no, 1=yes)
0...1
0...1
0...1
1
1
1
10 Pulse time adjustments 0.0...60.0
(0.5) Sec. 30.0
95
96
97
98
99
Software version
Production year
Production week
Serial number (x1000)
Serial number (units)
0..255
00..99
1..52
0..255
0..999
-
-
-
-
-
Parameter 95 till 99 are not adjustable..

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*Dimensions.
*Connections.
*Address.
VDH Products BV Tel: +31 (0)50 - 30 28 900
Produktieweg 1 Fax: +31 (0)50 - 30 28 980
9301 ZS Roden Email: [e-mail]
Nederland Internet: www.vdhproducts.nl