Names And Functions Of Components; Motor Operation - Hitachi NES1-OP Basic Manual

5.4 Names and functions of components

Standard panel
①POWER LED
②Run command LED
③ALARM LED
Name
①POWER LED
②Run command LED
③ALARM LED
④Key valid lamp
⑤RUN/STOP/RESET key
⑥RS422/RS485 port (RJ45)
Note 1) It is necessary to set changeover switch and the parameter C070 for releasing the Modbus communication. If the parameter C070 is
set to ModBus, external operator via the RS45 jack cannot be used.
Note 2) Connecting to the RJ45 jack must be done during the inverter power off.

5.5 Motor operation

Both "Run command" and "frequency command" is necessary to run the motor. Motor does not run if one of each is missing. For example, motor will
not run when a run command is given, but a frequency command is 0Hz. Additionally, the motor will not run if a FRS (free run stop) signal (and the like)
is being given.
NE-S1 series inverter has following way to set the run command and frequency command. (This is an example of sink logic and uses internal
control power supply.)
- Turns on (red) during inverter is powered up
- Turns on (green) during inverter operation. (This turns ON either Run command is given, or the inverter is giving
out power. Therefore it keeps turning on during 0 Hz driving, or keeps turning on during deceleration period even
after the run command is OFF.
- Turns on (red) when the inverter is in trip status.
- Refer to section 6.8 of QRG how to reset the trip status.
- Turns on (green) when the RUN/STOP/RESET is ready. It turns off when there is a RUN command. If the run
command is being given from the RUN/STOP/RESET key, the lamp is being on during deceleration period even
after the run command is OFF. While Run command is given such as FW(RV) terminal,if "RUN/STOP/RESET key"
was pressed, even Run command is OFF, the "Key valid lamp" is OFF until inverter is Stopped.
- Makes inverter run, stop and reset. RUN/STOP/RESET key is set default and it can be made invalid by the key
sensitivity selection (C151) to "no".
- It restores from the trip state if the inverter is in trip state.
- If the ModBus communication is selected, it can be temporary changed to an external operator mode if the inverter
is powered up with pressing the RUN/STOP/RESET key and keep it pressing 5seconds,and take off from the
key.. Changeover switch must be changed later on. Note 1)
- This is a port for external operator, Modbus connection, or ProDrioveNext (RS485/operator changeover switch
must be operated) before Power ON. In case of Modbus communication, it is necessary to set the changeover
switch and parameter (C070). Display of NES1-OP will be according to the parameter set of b150 continuously, if
the external operator is connected while the dedicated operator (NES1-OP) is integrated. Note2)
④Key valid lamp
⑥RS422/RS485 port (RJ45)
⑤RUN/STOP/RESET key
Description
Driving method in the default： ： ： ： 5.5.1→
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