3
* Parameters ALFA(NET) 33 DP.
Para-
meter
Description Parameter
Range
Standard
Value
02
03
04
Minimum setpoint setting
Maximum setpoint setting
Offset temperature sensor
(sensor adjustment)
-10.0..+90.0
/
C
-10.0..+90.0
/
C
-15.0..+15.0
/
C
-10.0
+90.0
0.0
10
11
Startup delay after power failure
Relay on at sensor failure
0..99 Minutes
0 = No, 1 = Yes
0
0
21
22
23
24
25
26
27
28
29
Differential maximum alarm
Differential minimum alarm
Time delay maximum alarm
Time delay minimum alarm
Offset maximum alarm
Offset minimum alarm
Relay alarm function
(0=watch alarm 1=control alarm)
Auto reset alarm after temperature recovering
(0=hold alarm, 1=don’t hold alarm)
Reset alarm after manual conformation,
despite the alarm situation is not solved
0.1..15.0
/
C
0.1..15.0
/
C
0..99 Minutes
0..99 Minutes
-10.0..+10.0
/
C
-10.0..+10.0
/
C
0..1
0 = No, 1 = Yes
0 = No, 1 = Yes
1.0
1.0
0
0
0.0
0.0
0
0
0
90
95
96
97
98
99
Network number
(only at ALFANET)
Software version
Production year
Production week
Serial number (x1000)
Serial number (units)
1..250
0..255
00..99
1..52
0..255
0..999
1
-
-
-
-
-
* Function diagram.
* Technical data.
Type
:
ALFA 33 DP alarm thermostat
ALFANET 33 DP alarm thermostat with network
Range
:
-10/+90
/
C, readout per 0,1
/
C
Supply
:
230 Vac / 3VA, 50/60Hz
(or else see product sticker)
Relay
:
1x SPDT contact
Max. 250V/16A(C-NO), 8A(C-NC) (cos phi=1)
Communication
:
RS 485 Network (2xtwisted pair shielded) at ALFANET model.
Control
:
By pushbuttons on front.
Front
:
Polycarbonate IP65
Sensor
:
SM 811 2-wire PTC-sensor (1000
S
at 25
/
C).
Dimensions
:
35 x 77 x 71,5mm (hwd)
Panel cut-out
:
28 x 70mm (hw)
- Provided with memory protection during power failure.
- Connection with screw terminals on the backside.
- Equipped with self test function and sensor failure detection.
- Special versions are available upon request.
