VDH ALFANET 1-LS, User Manual

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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 Versie: v1.1 Datum: 12-12-2007
Software: 060376_ALFA 1-LS File: Do071728.wpd Range: 0/+100 % per 1%
* 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
ALFA NET 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.