Group 12: Constant Speeds - ABB ACS 400 User Manual

Group 12: Constant Speeds

The ACS 400 has 7 programmable constant speeds, ranging from 0 to 250 Hz. Negative speed
values cannot be given for constant speeds.
Constant speed selections are ignored if the process PID reference is followed, the drive is in local
control mode or PFC (Pump-Fan Control) is active.
Note! Parameter 1208
the control signal is lost. Refer to parameter 3001
Code Description
1201 CONST SPEED SEL
This parameter defines which digital inputs are used to select Constant Speeds.
0 =
NOT SEL
Constant speed function disabled.
1...5 = DI1...DI5
Constant Speed 1 is selected with digital inputs DI1-DI5. Digital input activated = Constant Speed 1
activated.
6 = DI1,2
Three Constant Speeds (1 ... 3) are selected with two digital inputs.
Constant Speed selection with digital inputs DI1,2.
Table 13 Constant Speed selection with digital inputs DI1,2.
7 = DI3,4
Three Constant Speeds (1 ... 3) are selected with two digital inputs as in DI1,2.
8 = DI4,5
Three Constant Speeds (1 ... 3) are selected with two digital inputs as in DI1,2.
9 = DI1,2,3
Seven Constant Speeds (1 ... 7) are selected with three digital inputs.
Table 14 Constant Speed selection with digital inputs DI1,2,3.
10 = DI3,4,5
Seven Constant Speeds (1 ... 7) are selected with three digital inputs as in DI1,2,3.
1202 CONST SPEED 1... CONST SPEED 7
-1208 Constant speeds 1-7.
72
7 acts also as a so-called fault speed which may be activated if
CONST SPEED
DI 1 DI 2
0 0 No constant speed
1 0 Constant speed 1 (1202)
0 1 Constant speed 2 (1203)
1 1 Constant speed 3 (1204)
0 = DI deactivated, 1 = DI activated
DI 1 DI 2 DI 3
0 0 0
1 0 0
0 1 0
1 1 0
0 0 1
1 0 1
0 1 1
1 1 1
0 = DI deactivated, 1 = DI activated
<
AI MIN FUNCTION
Function
Function
No constant speed
Constant speed 1 (1202)
Constant speed 2 (1203)
Constant speed 3 (1204)
Constant speed 4 (1205)
Constant speed 5 (1206)
Constant speed 6 (1207)
Constant speed 7 (1208)
and parameter 3002
ACS 400 User's Manual
.
PANEL LOSS