Speed Adjustment (0.005% Increments) (Network Input Snvt_Lev_Percent Nvidrvspeedscale) - Mitsubishi Electric FR-A7NL Instruction Manual

NETWORK VARIABLES
6.4.2 Speed adjustment (0.005% increments) (network input
SNVT_lev_percent nviDrvSpeedScale)
You can set the frequency command in 0.005% increments on the assumption that the frequency set in
"reference frequency setting (nciNmiFreq) is 100%. (Refer to page 87)
⋅ The motor is in forward rotation status with positive value and in reverse rotation status with negative
value.
Data Name
nviDrvSpeedScale
⋅ Data acceptance timing ........... At network variable receive (nv_update_occurs event)
The frequency to be written to the inverter actually is as shown in the following formula.
⋅ Frequency command =| (reference frequency setting × speed adjustment × simple speed setting)|
Example:
When "Simple speed setting (nviDrvSpeed Stpt.value)" = 50%, "Reference frequency setting (nciNmlFreq)" = 60.0Hz,
and "Speed adjustment (nviDrvSpeedScale)" = -150%, output frequency is l(60.00Hz × -150% × 50%)l = -45Hz.
Therefore, a reverse command of 45Hz is given.
REMARKS
⋅ The variable is initialized to "100.00%" at power-on or if it is not updated at the "heartbeat receive time interval
(nciRcvHrtBt)". (Refer to page 84)
⋅ Control can not be exercised at less than the minimum frequency resolution (0.01Hz) of the inverter.
40
Initial Value
100.00% (NciDrvSpeedScale value)
(Refer to page
88)
Range
-163.840% to 163.830%
Increments
0.005%/bit