SJ700-2 Instruction Manual NT204DX - Hitachi America, Ltd.

Chapter 4 Explanation of Functions
4.1.8 Actual-frequency monitoring
The actual-frequency monitoring function is effective only when a motor
equipped with an encoder is connected to the inverter and the feedback
option board (SJ-FB) is mounted in the inverter. When the
actual-frequency monitoring function (d008) is selected, the inverter
displays the actual operating frequency of the motor (regardless of the
motor control method (A044 or A244)).
(Display)
Forward operation:
0.00 to 99.99 in steps of 0.01 Hz
100.0 to 400.0 in steps of 0.1 Hz
Reverse operation:
- 0.0 to -99.9 in steps of 0.1 Hz
- 100 to -400 in steps of 1 Hz
Note:
To use this monitoring function, set the encoder pulse-per-revolution (PPR) setting (P011) and the
number of motor poles (H004 or H204) correctly.
4.1.9 Torque command monitoring
Related code
d009: Torque command monitoring
The torque command monitoring function is effective when you have P033: Torque command input selection
selected control by torque for the vector control with sensor. When the P034: Torque command setting
torque command monitoring function (d009) is selected, the inverter
A044: V/f characteristic curve selectcion
C001 to C008: Terminal [1] to [8]
displays the value of the currently input torque command.
The % monitor lamp lights up while the inverter is displaying the torque command value.
Assign 52 (ATR) on intelligent input terminal and turn on to activate torque control.
(Display)
0. to 200. in steps of 1 %
4.1.10 Torque bias monitoring
The torque bias monitoring function is effective when you have selected
the vector control with sensor. When the torque bias monitoring function
(d010) is selected, the inverter displays the value of the currently set
value of torque bias.
The % monitor lamp lights up while the inverter is displaying the torque bias value.
(Display)
-150. to +150. in steps of 1 %
Related code
d008: Actual-frequency monitoring
P011: Encoder pulse-per-revolution
(PPR) setting
H004: Motor poles setting, 1st motor
H204: Motor poles setting, 2nd motor
Related code
d010: Torque bias monitoring
A044: V/f characteristic curve selectcion
P036: Torque bias mode
P037: Torque bias value
P038: Torque bias polarity
4.1.11 Torque monitoring
Related code
When the torque monitoring function (d012) is selected, the inverter d012: Torque monitoring
displays the estimated value of the torque output from the inverter.
A044: V/f characteristic curve selectcion
The % monitor lamp lights up while the inverter is displaying the estimated output torque.
(Display)
-300. to +300. in steps of 1 %
Note: This monitoring function is effective only when you have selected the sensorless vector control,
0Hz-range sensorless vector control, or vector control with sensor as the control mode.
Displayed value is not accurate when the other control method is selected.
4.1.12 Output voltage monitoring
Related code
When the output voltage monitoring function (d013) is selected, the d013: Output voltage monitoring
inverter displays the voltage output from the inverter.
The V monitor lamp lights up while the inverter is displaying the output voltage.
(Display)
0.0 to 600.0 in steps of 0.1 V
(remark) Displayed value may not be accurate when the output voltage is differ from input voltage.
4.1.13 Power monitoring
Related code
When the power monitoring function (d014) is selected, the inverter d014: Power monitoring
displays the electric power (momentary value) input to the inverter.
The kW monitor lamps (V and A lamps) light up while the inverter is displaying the input power.
(Display)
0.0 to 999.9 in steps of 0.1 kW
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