Hitachi SJ Series User Manual page 473

Chapter 13
13.7 Monitoring Output Voltage
Q
• Want to check the voltage which is output to the
motor.
• Want to see the movement of output voltage.
A
• Displays the output voltage which is output to the
motor.
Parameter
Item
Output voltage
monitor
13.8 Checking P-N Voltage
(Internal DC Voltage)
Q
• Want to see the movement of inverter's internal
power supply.
• Want to monitor the power supply when it returns
from the motor.
A
• P-N voltage charged in the main circuit capacitor of
inverter can be monitored.
Parameter
Item
DC voltage monitor
Parameter
[dA-18] 0.0~800.0 (V)
Parameter
[dA-40] 0.0~1000.0 (V)
!
• A correct value may not be displayed when the input
voltage is low.
Data
Displays the voltage which is output to the
motor.
!
• P-N voltage is DC voltage. The overvoltage error
[E007] is generated when P-N voltage exceeds
approx. 405Vdc in the case of 200V class inverters,
and if P-N voltage exceeds approx. 810Vdc in the
case of 400V class inverters.
Data
Displays the P-N voltage of inverter.
13-10
Monitor Functions
Description
Description