Motor Control - ABB ACS880 Firmware Manual

298 Parameters
No. Name/Value
DI5
DI6
DIO1
DIO2
Other [bit]
96.13 User set I/O mode
in2
96.16 Unit selection
Bit Name
0 Power unit
1 Reserved
2 Temperature
unit
3 Reserved
4 Torque unit
5...15 Reserved
0000h...FFFFh
96

97 Motor control

97.03 Slip gain
0 ... 200%
Description
Digital input DI5 (10.02 DI delayed
Digital input DI6 (10.02 DI delayed
Digital input/output DIO1
Digital input/output DIO2
Source selection (see Terms and abbreviations
See parameter 96.12 User set I/O mode
Selects the unit of parameters indicating power, temperature
and torque.
Information
0 = kW
1 = hp
0 = C (°C)
1 = F (°F)
0 = Nm (N·m)
1 = lbft (lb·ft)
Unit selection word.
Switching frequency; slip gain; voltage reserve; flux braking;
anti-cogging (signal injection); IR compensation.
Defines the slip gain which is used to improve the estimated
motor slip. 100% means full slip gain; 0% means no slip gain.
The default value is 100%. Other values can be used if a
static speed error is detected despite having the setting at full
slip gain.
Example (with nominal load and nominal slip of 40 rpm): A
1000 rpm constant speed reference is given to the drive.
Despite having full slip gain (= 100%), a manual tachometer
measurement from the motor axis gives a speed value of 998
rpm. The static speed error is 1000 rpm - 998 rpm = 2 rpm. To
compensate the error, the slip gain should be increased to
105% (2 rpm / 40 rpm = 5%).
Slip gain.
status, bit 4).
status, bit 5).
(11.02 DIO delayed status, bit 0).
(11.02 DIO delayed status, bit 1).
on page 88).
in1.
Def/FbEq16
6
7
10
11
-
Not selected
00000b
1 = 1
100%
1 = 1%