Motor Rated Slip (Motor 0); Slip Compensation Limit; Slip Compensation Time Constant; Accumulative Motor Operation Time (Day) - Delta Electronics AC Motor Drive VFD-E User Manual

Chapter 4 Parameters|
The motor auto tune procedure will set this parameter. The user may also set this parameter
without using Pr.07.04.
07.06

Motor Rated Slip (Motor 0)

Settings
Refer to the rated rpm and the number of poles on the nameplate of the motor and use the
following equation to calculate the rated slip.
Rated Slip (Hz) = F
07.07

Slip Compensation Limit

Settings
This parameter sets the upper limit of the compensation frequency (the percentage of
Pr.07.06).
Example: when Pr.07.06=5Hz and Pr.07.07=150%, the upper limit of the compensation
frequency is 7.5Hz. Therefore, for a 50Hz motor, the max. output is 57.5Hz.
07.08 Torque Compensation Time Constant
Settings
07.09

Slip Compensation Time Constant

Settings
Setting Pr.07.08 and Pr.07.09 changes the response time for the compensations.
Too long time constants give slow response; too short values can give unstable operation.
07.10 Accumulative Motor Operation Time (Min.)
Settings
07.11

Accumulative Motor Operation Time (Day)

Settings
Pr.07.10 and Pr.07.11 are used to record the motor operation time. They can be cleared by
setting to 0 and time is less than 1 minute is not recorded.
07.12 Motor PTC Overheat Protection
Settings
07.14 Motor PTC Overheat Protection Level
4-98
0.00 to 20.00Hz
(Pr.01.01 base frequency) – (rated rpm x motor pole 120)
base
0 to 250%
0.01 ~10.00 sec
0.05 ~10.00 sec
0~1439
0 ~65535
0 Disable
1 Enable
Revision June 2008, 04EE, SW--PW V1.11/CTL V2.11
Unit: 0.01
Factory Setting: 3.00
Unit: 1
Factory Setting: 200
Unit: 0.01
Factory Setting: 0.10
Unit: 0.01
Factory Setting: 0.20
Unit: 1
Factory Setting: 0
Unit: 1
Factory Setting: 0
Unit: 1
Factory Setting: 0
Unit: 0.1