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User manual
ALFA 13 DP Pt100 and
ALFANET 13 DP Pt100
Min./Max. Alarm Thermostat.
VDH doc. 072376
Version: v2.0
Date: 12-11-2007
Software: 053308_ALFA 13/33DP
File: Do072376.wpd
Range: -10/+40
C per 0,1
C
* Function.
The
ALFA(NET) 13 DP Pt100
is a digital alarm thermostat for rail mounting. The thermostat
watches the minimum and maximum temperature. The temperature readout is in tenth of degrees
Celsius. The
ALFA(NET) 13 DP Pt100
has one relay for both alarms.
The
ALFA
NET
13 DP
has a RS 485 network connection so it can be read out and adjusted on the
Alfanet.
* Installation.
On the connection diagram of the
ALFA(NET) 13 DP Pt100
is shown how the sensor, power supply
and relay are connected.
After connecting the
ALFA(NET) 13 DP Pt100
to the power supply, a self-test function is started. As
this test is finished, the measured temperature appears in the display.
The relay is normally activated, and with an alarm it is deactivated, and the led 'set high' will be lit in
the display.
* Control.
The
ALFA 13 DP Pt100
alarm-thermostat can be controlled by three push buttons on the front;
SET
- view / change set points and reset of alarm.
UP
- increase a set point.
DOWN
- decrease a set point.
* Viewing set points.
Viewing set point of maximum alarm:
By pushing the
SET
key first and then the
UP
key together the maximum alarm set point
appears in the display. The led 'set high' starts blinking.
Viewing set point of minimum alarm:
By pushing the
SET
key first and then the
DOWN
key together the maximum alarm set point
appears in the display. The led 'set low' starts blinking.
A few seconds after releasing the keys the set point disappears and the measured temperature is
shown in the display.
