Mitsubishi Electric FR-D720-0.2K-G Instruction Manual page 77

Test operation and gain adjustment of the PM sensorless vector control
(1) PM parameter initialization (Pr.998)
• When Pr.998 = "6004, 8009, or 9009", the speed is displayed or set using the motor rotations per minute.
To use frequency to display or set, set Pr.998 = "6104, 8109, or 9109".
Pr.998
Setting
6004 Parameter settings for an S-PM geared motor (rotations per minute)
6104 Parameter settings for an S-PM geared motor (frequency)
8009 Parameter settings for an IPM motor (after tuning) (rotations per minute)
8109 Parameter settings for an IPM motor (after tuning) (frequency)
9009 Parameter settings for an SPM motor (after tuning) (rotations per minute) "
9109 Parameter settings for an SPM motor (after tuning) (frequency)
The above parameters can be set when Pr. 160 Extended function display selection = "0". (Refer to page 161.)
REMARKS
• To set "8009, 8109, 9009, or 9109" in Pr.998, offline auto tuning must be performed before setting Pr.998. (Refer to page 105.)
When Pr.71, Pr.80, Pr.81, Pr.84, or Pr.859 is not set, Pr.998 cannot be set. Any value set in Pr.998 is regarded as a value outside of
the setting range.
• Make sure to set Pr.998 before setting other parameters. If the Pr.998 setting is changed after setting other parameters, some of
those parameters will be initialized too. (Refer to "(3) PM parameter initialization list" for the parameters that are initialized.)
• If the setting of Pr.998 PM parameter initialization is changed between "6004, 8009, or 9009 (rotations per minute)" and "6104,
8109, or 9109 (frequency)", all the target parameters are initialized. Use Pr.144 Speed setting switchover to change the display
units between rotations per minute and frequency. Pr.144 enables switching of display units between rotations per minute and
frequency without initializing the parameter settings.
Example) Changing the Pr.144 setting between "6" and "106" switches the display units between frequency and rotations per minute.
• When performing PM parameter initialization by selecting the mode on the operation panel, a value to be written may be the
same as the present set value. In that case, write a value different from the present value first before performing the PM
parameter initialization. If the parameter number (or "PM") and the setting value do not blink alternately after the setting,
parameter writing cannot be performed. Check that the drive unit is in the mode where the parameter writing can be performed,
the value to be written is different from the present set value, etc.
(2) PM parameter initialization list
The parameter settings in the following table are changed to the settings required to perform control for the applied PM motor
with the parameter setting mode or with Pr.998 PM parameter initialization setting. The changed settings differ according to the
applied PM motor. For the settings, refer to the PM motor specifications table below.
Parameter
Name
Number
1
Maximum setting
4
Multi-speed setting (high speed)
5
Multi-speed setting (middle speed)
6
Multi-speed setting (low speed)
9
Electronic thermal O/L relay
10
Coasting speed
13
Starting speed
15
Jog speed setting
Acceleration/deceleration reference
20
speed
22
Stall prevention operation level
37
Speed display
42
Speed detection
55
Speed monitoring reference
56
Current monitoring reference
71
Applied motor
80
Motor capacity
81
Number of motor poles
84
Rated motor speed
74
Description
PM Motor (Rotations per Minute)
6004 (S-PM),
Pr.998 8009 (IPM motor (tuning)),
9009 (SPM motor (tuning))
Maximum motor rotation speed
Rated motor rotation speed
50% of the rated motor rotation speed
10% of the rated motor rotation speed
3% of the rated motor rotation speed
0.5% of the rated motor rotation speed
5% of the rated motor rotation speed
Rated motor rotation speed
6% of the rated motor rotation speed
Rated motor rotation speed
S-PM:1040
IPM motor: 8090
SPM motor: 9090 
S-PM: One rank lower than the drive unit capacity 
Operation after Selecting the Parameter
Setting Mode on the Operation Panel
" (PM)  write "6004"
"
Invalid
" (PM)  write "8009"
"
Invalid
" (PM)  write "9009"
Invalid
Setting Value
PM Motor (Frequency)
6104 (S-PM),
8109 (IPM motor (tuning)),
9109 (SPM motor (tuning))
Maximum motor frequency
Rated motor frequency
50% of the rated motor frequency
10% of the rated motor frequency
Rated motor current 
3% of the rated motor frequency
0.5% of the rated motor frequency
5% of the rated motor frequency
Rated motor frequency
150%
0
6% of the rated motor frequency
Rated motor frequency
Rated motor current
9999 
9999 
Setting
Increments
6004, 6104,
8009, 8109,
9009 9109
1r/min 0.01Hz
1r/min 0.01Hz
1r/min 0.01Hz
1r/min 0.01Hz
0.01A
1r/min 0.01Hz
1r/min 0.01Hz
1r/min 0.01Hz
1r/min 0.01Hz
0.1%
1
1r/min 0.01Hz
1r/min 0.01Hz
0.01A
1
0.01kW
1
1r/min 0.01Hz