3
* Parameters ALFA 71 S PI
Para-
meter
Description Parameter
Range
Default
01
02
03
04
Function Relay 1
1 = Cool
2 = Heat
3 = Alarm
Function Relay 2
(same as relay 1)
Function Relay 3
(same as relay 1)
Function PI-output
1 = Cool
2 = Heat
1..3
1..3
1..3
1..2
1
2
3
1
05
06
07
08
Offset temperature sensor 1
Offset PI function (zone)
P-band setting
I-time setting (0 means off)
-15.0..+15.0
C
-15.0..+15.0
C
0.0..20.0
C
0..99 Minutes
0.0
0.0
5.0
0
10
11
12
13
14
15
16
17
18
19
Switch on relay 2 by
0 = Temperature
1 = Time
Switch on relay 3 by
0 = Temperature
1 = Time
Switch on delay relay 2
Switch on delay relay 3
Switching differential relay 1
Setpoint offset relay 1
Switching differential relay 2
Setpoint offset relay 2
Switching differential relay 3
Setpoint offset relay 3
0..1
0..1
0..99 Minutes
0..99 Minutes
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
0
15
15
0.5
0.0
0.5
0.0
0.5
0.0
20
21
22
23
24
Switch on delay cooling
Switch off delay cooling
Parameter 20/21 in Sec. or Min.
0 = Seconds
1 = Minutes
Minimum on-time cooling
Minimum off-time cooling
0..99
0..99
0..1
0..99 Minutes
0..99 Minutes
0
0
0
0
0
25
26
27
Minimum set point
Maximum set point
Read-out above -10
C per 1
C
-50.0..+50.0
C
-50.0..+50.0
C
0 = No, 1 = Yes
-50
+50
0
30
31
32
33
34
35
36
37
Alarm type
0 = None
1 = Absolute
2 = Relative
Minimum alarm set point
Maximum alarm set point
Time delay minimum alarm
Time delay maximum alarm
Function alarm relay
0 = Fail safe
alarm
1 = Control alarm
Reset alarm relay after recovering alarm
Reset alarm relay after manual reset
0..2
-50.0..+50.0
C
-50.0..+50.0
C
0..99 minutes
0..99 minutes
0..1
0= No, 1= Yes
0= No, 1= Yes
1
-50
+50
0
0
0
0
0
40
41
Start up delay after power failure
Forced relay function at sensor failure
0 = None
1 = Cool
2 = Heat
0..99 Minutes
0..2
0
0
50
51
Duty Cycle control active
Duty Cycle cycle time
0= No, 1= Yes
5..240 Seconds
1
20
95
96
97
98
99
Software version
Production year
Production week
Serial number (x1000)
Serial number (units)
-
-
-
-
-
-
-
-
-
-
