ABB ACH550-01 User Manual page 203

ACH550 User's Manual
Group 12: CONSTANT SPEEDS
This group defines a set of constant speeds. In general:
• You can program up to 7 constant speeds, ranging from
0...500 Hz or 0...30000 rpm.
• Values must be positive (no negative speed values for
constant speeds).
• Constant speed selections are ignored if:
- the process PID reference is followed, or
- the drive is in local control mode, or
- PFA (Pump and Fan Alternation) is active.
Note: Parameter 1208
fault speed, which may be activated if the control signal is lost.
Refer to parameter 3001
PANEL COMM ERROR
Code Description
1201 CONST SPEED SEL
Defines the digital inputs used to select constant speeds. See general
comments in the introduction.
0 = – Disables the constant speed function.
NOT SEL
1 = 1 – Selects constant speed 1 with digital input
DI
• Digital input activated = constant Speed 1 activated.
2...6 = 2...
DI DI
• See above.
7 = 1,2 – Selects one of three constant speeds (1...3) using
DI
2.
DI
• Uses two digital inputs, as defined below (0 =
activated):
1
DI DI
0 0
1 0
0 1
1 1
• Can be set up as a so-called fault speed, which is activated if the
control signal is lost. Refer to parameter 3001
parameter 3002
Parameter listing and descriptions
CONST SPEED
<
AI MIN FUNCTION
.
6 – Selects constant speed 1 with digital input
2 Function
No constant speed
Constant speed 1 (1202)
Constant speed 2 (1203)
Constant speed 3 (1204)
PANEL COMM ERR
7 acts also as a so-called
and parameter 3002
Range
-14...14
1.
DI
de-activated, 1 =
DI
<
AI MIN
.
2... 6.
DI DI
1 and
DI
DI
function and
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