Speed Monitor (0.005% Increments) (Network Output Snvt_Lev_Percent Nvodrvspeed) - Mitsubishi Electric FR-A7NL Instruction Manual

6.4.3 Speed monitor (0.005% increments) (network output SNVT_lev_percent
nvoDrvSpeed)
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)
⋅ A positive value indicates the motor is in the forward rotation status and a negative value indicates that
the motor is in the reverse rotation status.
Data Name
nvoDrvSpeed
⋅ Data send event ...................... When data changes in 0.005% increments
⋅ Data send timing ..................... As set in Pr. 388 Heartbeat send time interval and Pr. 389 Minimum heartbeat
Output frequency is as shown in the following formula.
⋅ Output frequency = | (reference frequency setting × speed monitor × simple speed setting)
*1 Refer to page 87 for reference frequency setting and page 39 for simple speed setting.
Example:
When "simple speed setting(nviDrvSpeedStpt.value)" = 50%, "reference frequency setting(nciNmIFreq)" = 60.0Hz
and "speed setting monitor(nvoDrvSpeed)" = -150%, output frequency is I(60.0Hz × -150%x50%)I = -45Hz.
Therefore, a reverse rotation of 45Hz is given.
REMARKS
⋅ Monitoring is disabled at less than the minimum frequency resolution (0.01Hz) of the inverter.
Initial Value
0.000% -163.840% to 163.830%
send time. (Refer to page 75)
NETWORK VARIABLES
Range Increments
0.005%/bit
|
*1
6
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