Load Speed Ctrl - ABB ACS800 Firmware Manual

Index Name/Selection

77 LOAD SPEED CTRL

77.01 LOAD SPD CTRL
SEL
NOT SEL
ENABLE
COMM.MODULE
PARAM 77.02
77.02 LOAD SPD CTRL
PTR
-255.255.31 ...
+255.255.31 / C.-
32768 ... C.32767
77.03 HOLD RAMP
0.00 ... 5.00 s
77.04 CURRENT X1 FWD
0.0 ... 3000.0 A
77.05 REF Y1 FWD
0.0 ... 18000.0 rpm
77.06 CURRENT X2 FWD
0.0 ... 3000.0 A
77.07 REF Y2 FWD
0.0 ... 18000.0 rpm
77.08 CURRENT X3 FWD
0.0 ... 3000.0 A
77.09 REF Y3 FWD
0.0 ... 18000.0 rpm
Description
Settings for Load speed control. See section
Note: The Base speed versus Motor current graph is plotted using the
parameters 77.04 ... 77.19. These parameters have to be configured in the
correct sequence and if the sequence of values in these parameters are not
correct, the speed will be limited to Par.
information, see section Load speed control
Defines the Load speed control function activation command. If this selection
command is not active then the speed limit is not calculated with this function.
No Load speed control.
Load speed control always active.
Load speed control through APPL CONTROL WORD (3.34) bit 2.
Load speed selected with Par.
Defines the source or constant for value Par. 77.02 LOAD SPD CTRL PTR of
parameter 77.01 LOAD SPD CTRL SEL.
Parameter index or a constant value:
- Parameter pointer: Inversion, group, index and bit fields. The bit number is
effective only for blocks handling boolean inputs.
- Constant value: Inversion and constant fields. Inversion field must have value
C to enable the constant setting.
Defines time period for holding the speed reference after which the motor has
crossed the base speed to check for the motor current. This motor current after
this time period delay is regarded by the function as the base speed current for
the particular load used.
The speed reference holding time.
Defines the current in amps expected at the base speed in forward direction for
limiting the speed reference to the value in parameter
This current can be the empty hook current at the base speed when running in
the forward direction.
Setting range in amps.
Defines the speed in rpm to be used as the speed limit in forward direction, if
the current at the base speed in forward direction is equal to the value in
parameter 77.04 CURR X1 FWD. This value can be the maximum allowed
speed in empty hook condition in the forward direction.
Setting range in rpm.
Defines the current in amps expected at the base speed in forward direction for
limiting the speed reference to the value in parameter
Setting range in amps.
Defines the speed in rpm to be used as the speed limit in forward direction, if
the current at the base speed in forward direction is equal to the value in
parameter 77.06 CURR X2 FWD.
Setting range in rpm.
Defines the current in amps expected at the base speed in forward direction for
limiting the speed reference to the value in Parameter
Setting range in amps.
Defines the speed in rpm to be used as the speed limit in forward direction, if
the current at the base speed in forward direction is equal to the value in
parameter 77.08 CURR X3 FWD.
Setting range in rpm.
Load speed control
77.04 Base speed. For more
on page 123.
77.02 LOAD SPD CTRL PTR.
77.05
77.07
77.09
Actual signals and parameters
FbEq
on page 123.
1
2
3
4
-
0 ... 500
REF Y1 FWD.
0 ... 30000
0 ... 180000
REF Y2 FWD.
0 ... 30000
0 ... 180000
REF Y3 FWD.
0 ... 30000
0 ... 180000
207