User manual ALFANET 73 Alarm thermostat.

User manual
ALFANET 73
Alarm thermostat.
VDH doc. 080335
Software: ALFA(NET)73
Versie: v1.0
File: Do080335.WPD
Datum: 06-03-2008
Bereik: -50/+50,0 C
* Installation.
On the connection diagram of the ALFANET 73 is shown how the sensors, power supply and
relays has to be connected. After connecting the ALFANET 73 to the power supply, a self test
function is started. As this test is finished, the measured temperature will appear on the display.
* Control.
The ALFANET 73 thermostat can be controlled by four pushbuttons on the front These keys are:
SET
- view / change set point and reset the alarm
 (UP)
- increase the set point.
 (DOWN) - decrease the set point.
MODE
- relays status key.
* Viewing setpoints.
Viewing Maximum alarm set point:
By pushing the SET key simultaneously with the UP key, the adjusted maximum alarm set point
will be shown.
Viewing Minimum alarm set point:
By pushing the SET key simultaneously with the DOWN key, the adjusted maximum alarm set
point will be shown.
A few seconds after releasing the SET key the set point disappears and the measured
temperature will be visible again.
* Changing the set points.
Push the SET key simultaneously with the UP or DOWN key till the maximum alarm set point or the
minimum alarm set point appears. Release the SET key.
Push the SET key again and now the set point can be changed with the UP or DOWN key. A few
seconds after releasing the keys measured temperature will be visible again.
* Status of the Relays.
By pushing the MODE key the display shows the status of the relays. Each digit shows the status
of one relay output, showing 0=off and 1=on. The code 110 means relay 1 and 2 are on and relay
3 is off.
1
* Setting internal parameters.
Next to the adjustment of the set point, internal settings can be made like differential, sensor
offset, set point range and the functions of the thermostat.
Push the DOWN key for more than 10 seconds, to enter the 'Internal Programming Menu'. In the
left display the upper and lower segment are blinking. Over the UP and DOWN keys the required
parameter can be selected (see table for the parameters).
If the required parameter is selected, the value can be read-out by pushing the SET key. Pushing
the UP or DOWN key to change the value of this parameter.
If 20 seconds no key is pushed, the ALFANET 73 changes to the normal operation mode.
* Adjustment sensor.
The sensor can be adjusted by using the Sensor Offset parameter 05. Indicates a Sensor e.g. 2 C
to much, the according Sensor Offset has to be decreased with 2C.
*
Error messages.
On the display of the ALFANET 73 the following error messages can appear:
LO - Minimum alarm Thermostat.
HI
- Maximum alarm Thermostat.
E1
- Sensor failure.
EE - Settings are lost.
Solution EEE:
- Reprogram the settings.
-L- In case of sensor short-circuit the display alternates between error-code E..
and -L-, as indication for a short-circuit sensor.
-H- - In case of open-circuit sensor the display alternates between error-code E..
and -H-, as indication for a open circuit sensor.
Reset Alarm.
When an error-messages appears it can be reset by pushing the SET key.
The function of this key depends on parameter P42.
* Technical data.
Type
Range
Supply
Read-out
Relays
Control
Front
Sensor
Dimensions
Panel cut out
Accuracy
: ALFANET 73 Alarm thermostat (Panel mounting)
:-50/+50,0C, above -10C read-out in 0,1C
: 12Vac (-5/+10%)
: 3-digit 7-segments display
: Ry1= SPST(NO)
250V/8A(cos =1) of 250V/5A (cos =0.4)
Ry2= SPST(NO)
250V/8A (cos =1) of 250V/5A (cos =0.4)
Ry3= SPDT(NO/NC)
250V/8A (cos =1) of 250V/5A (cos =0.4)
Relays have one common (C).
: by push buttons on the front.
: Polycarbonate
: SM 811/2m (PTC 1000/25C).
: 90 x 71 x 58mm (hwd)
: 46 x 71mm (HW) at panel mount
: ± 0,5% of the range.
- Provided with memory protection during power failure.
- Connections with screw terminals on the back side.
- Equipped with sensor failure detection.
- Special versions on request available.
2
* Parameters ALFANET 73
Parameter
Description Parameter
Range
0..7
1
02
03
Function Relay 1
0 = Non
1 = Minimum Control alarm
2 = Maximum Control alarm
3 = Minimum Fail safe alarm
4 = Maximum Fail safe alarm
5 = Minimum Fail safe alarm
+ Sensor failure
6 = Maximum Fail safe alarm
+ Sensor failure
7 = Sensor failure
Function Relay 2
Function Relay 3
0..7
0..7
2
0
05
Offset temperature sensor
-15.0..+15.0C
0.0
10
11
12
13
14
15
Switching
Switching
Switching
Switching
Switching
Switching
0.1..15.0C
-15..+15C
0.1..15.0C
-15..+15C
0.1..15.0C
-15..+15C
0.5
0.0
0.5
0.0
0.5
0.0
20
21
Minimum adjustable set point
Maximum adjustable set point
-50.0..+50.0C
-50.0..+50.0C
-50
+50
30
31
32
Time delay minimum alarm
Time delay maximum alarm
Reset alarm relay after recovering
alarm
Reset alarm relais after manual
reset
0..99 Minutes
0..99 Minutes
0= No
1= Yes
0= No
1= Yes
0
0
0
40
Control delay after power failure
0..99 Minutes
0
90
95
96
97
98
99
Network number
Software version
Production year
Production week
Serial number (x1000)
Serial number (Units)
1..255
0..255
00..99
1..52
0..255
0..999
1
-
01
33
differential
offset Relay
differential
offset Relay
differential
offset Relay
Relay 1
1
Relay 2
2
Relay 3
3
Default
0
* Address.
VDH Products BV
Produktieweg 1
9301 ZS Roden
Nederland
Tel.
Fax.
Email:
Internet:
3
+31 (0)50 - 30 28 900
+31 (0)50 - 30 28 980
info@vdhproducts.nl
www.vdhproducts.nl
* Dimensions.
* Connections.
4