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User manual
ALFA 1-LS and
ALFANET 1-LS
Level switch controller
with input 0-10V =0-100%
VDH doc: 071728
Software: 060376_ALFA 1-LS
* Function.
The ALFA(NET) 1-LS is a level-switch controller for rail mounting. The read-out is in whole percent.
The function from the controller can be changed through the internal parameters. It is possible to
switch the relay if the measured input is lower or higher than the adjusted set point.
The ALFANET 1-LS has a RS 485 network connection for read-out and adjusting through the Alfanet.
* Installation.
On the topside of the ALFA(NET) 1-LS is shown how the input, power supply and relay have to be
connected.
After connecting the ALFA(NET) 1-LS to the power supply, a self-test function is started. As this test
is finished the measured temperature appears in the display.
When the relay is activated, the led 'on' will light-up in the display.
* Control.
The ALFA(NET) 1-LS can be controlled by three push buttons on the front.
These keys are:
SET - view / change the setpoint.
UP - increase the setpoint.
DOWN - decrease the setpoint.
Versie: v1.1
File: Do071728.wpd
1
Datum: 12-12-2007
Range: 0/+100 % per 1%
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Summary of Contents for VDH ALFANET 1-LS
- Page 1 The function from the controller can be changed through the internal parameters. It is possible to switch the relay if the measured input is lower or higher than the adjusted set point. The ALFANET 1-LS has a RS 485 network connection for read-out and adjusting through the Alfanet. * Installation.
- Page 2 * Viewing setpoint. By pushing the SET key the setpoint appears in the display. The led 'set' starts blinking. A few seconds after releasing the SET key the setpoint disappears and the measured temperature is shown in the display. * Changing setpoint. Push the SET key and the setpoint appears in the display.
- Page 3 Solution: - Reprogram the settings. * Technical details. Type : ALFA 1-LS (Level Switch) controller or ALFANET 1-LS (Level Switch) controller with network Range : 0/+100 %, read out per 1 % Supply : 230 Vac / 1,2VA 50/60Hz (or else see product sticker)
- Page 4 * Dimensions. * Connections.