3
* Technical details.
Model
: ALFA 11 Cool/Heat Thermostat
Range
: +50/+150
C, readout per 1
C
Supply
: 230 Vac 50/60Hz
Relay
: SPDT 250V/16A(C-NO), 8A(C-NC) (cos phi=1)
Control
: by push buttons on the front.
Front
: Polycarbonate
Sensor
: SM 811/2m (1000
at 25
C)
Sizes
: 90 x 53 x 58mm (hwd)
Panel hole
: 46 x 53mm (hw)
- Provided with memory protection during power failure.
- Connection with screw terminals on the back side.
- Equipped with self test function and sensor failure detection.
- Special version on request available.
* Parameters ALFA 11.
PARA-
METER
DESCRIPTION PARAMETER
RANGE
STANDARD
VALUE
01
02
03
04
Switching differential
Minimum setpoint
Maximum setpoint
Offset temperature sensor
1..15
C
+50..+150
C
+50..+150
C
-15..+15
C
3
+50
+150
0
10
11
Startup delay after power failure
Relays on at sensor failure
0..99 min.
0 = No
1 = Yes
0
0
15
16
17
18
19
20
Function cooling or heating
Switch on delay relays 1)
Switch off delay relays 1)
Parameter 16/17 in sec. or min.
Minimum on-time relays
Minimum off-time relays
0 = Cool
1 = Heat
0..99
0..99
0 = sec.
1 = min.
0..99 min.
0..99 min.
0
0
0
0
0
0
90
95
96
97
98
99
Network number
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.