1
CPU-unit
SUPPLY-unit
User manual ALFA-45
and ALFANET-45
Cool/Defrost thermostat
with Fan control.
VDH doc. 053884
Version: v1.3
Datum: 04-04-2011
Software: ALFA 45 F
Doc: Do053884.wpd
Range: -50/+50
C, per 1
C
* Installation.
The
ALFA(NET)-45
consist of two parts, a Supply-unit for rail-mounting and a CPU-unit for front-
mounting (with operation buttons, display). These two units are connected with each other by a cable
with 8-pole data-connector.
On the front of the
ALFA-45 Modulbox
supply-unit
is shown how sensors and power supply are to
be connected.
After connecting the
ALFA(NET)-45
to the power supply, a self test is started. As this test has finished
the measured temperature of the product-sensor appears in the display.
The Supply-unit has three relay outputs, one for the compressor, one for the fan and one for defrost.
The compressor-relay and the defrost-relay got there own led-indication in the display.
And the
ALFANET -45
is by use of the
ALFANET PC-INTERFACE
controllable on the PC.
* Control.
The
ALFA(NET)-45
thermostat can be controlled by three pushbuttons on the front. These keys are:
SET
- view / change of settings.
UP
- increase of settings.
DOWN
- decrease of settings.
