52
Group 12: Constant Speeds
The ACS140 has 7 programmable constant speeds, ranging from 0 to
300 Hz. Negative speed values cannot be given for constant speeds.
Constant speed selections are ignored if the process PID reference is
followed (see PID Control Macro).
Note! Parameter 1208 CONST SPEED 7 acts also as a so-called fault speed
which may be activated if the control signal is lost. Refer to parameter 3001
AI<MIN FUNCTION and parameter 3002 PANEL LOSS.
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 2 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 3 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
-1208
CONST SPEED 1... CONST SPEED 7
Constant speeds 1-7.
0 = DI deactivated, 1 = DI activated
DI1 DI2 Function
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
DI1 DI2 DI3 Function
0 0 0 No const. speed
1 0 0 Constant speed 1 (1202)
0 1 0 Constant speed 2 (1203)
1 1 0 Constant speed 3 (1204)
0 0 1 Constant speed 4 (1205)
1 0 1 Constant speed 5 (1206)
0 1 1 Constant speed 6 (1207)
1 1 1 Constant speed 7 (1208)
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