3
* Parameters ALFA 71 PI SSR 24Vdc
Para-
meter
Description Parameter
Range
Default
01
02
04
Function Relay 1
1 = Cool
2 = Heat
3 = Alarm
Function Relay 2
1 = Cool
2 = Heat
3 = Alarm
Function Solid-State open collector output
1 = Cool (on/off)
2 = Cool (PI-mod)
3 = Heat (on/off)
4 = Heat (PI-mod)
1..3
1..3
1..4
1
2
1
06
Offset temperature sensor 1
-15.0..+15.0
C
0.0
10
12
14
15
16
17
20
21
Switch on relay 2 by
0 = Temperature
1 = Time
Switch on delay relay 2
(P10=1)
Switching differential relay 1
Setpoint offset relay 1
Switching differential relay 2
Setpoint offset relay 2
Switching differential solid-state
(P04=1,3)
Setpoint offset solid-state
(P04=1,3)
0..1
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
15
0.5
0.0
0.5
0.0
0.5
0.0
22
23
24
25
26
Switch on delay cooling
Switch off delay cooling
Parameter 22/23 in Seconds or Minutes
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
27
28
29
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
52
53
54
Setpoint offset PI function (zone)
P-band setting
I-time setting
(999 means off)
Duty Cycle time adjustment
PI off: Above set point at heating and
Below set point at cooling
-30.0..+30.0
C
0.0..+30.0
C
1..999 Seconds
1..999 Seconds
0= No, 1= Yes
0.0
5.0
999
20
0
95
96
97
98
99
Software version
Production year
Production week
Serial number (x1000)
Serial number (units)
-
-
-
-
-
-
-
-
-
-
