Hitachi NES1-002LB, Краткое руководство пользователя

Страница: 205 / 295

Chapter 10 Troubleshooting
10 - 1
Troubleshooting Tips
The table below lists typical symptoms and the corresponding solution(s).
1. Inverter does not power up.
Possible Cause(s) Corrective Action
Power cable is incorrectly wired. Check input wiring
Short bar or DCL between [P] and [PD] is
disconnected. Install short bar or DCL between [P] and [PD] terminal.
Power cable is breaking. Check input wiring.
Do not apply a normal voltage to terminal
L1 and N terminal (single phase), R , S and
T terminal (three-phase circuit) to supply
power to. Apply a normal voltage to terminal L1 and N terminal (single phase),
R, S and T terminal (three-phase circuit) to supply power to.
2. Motor does not start.
Possible Cause(s) Corrective Action
Incorrect RUN command source is
selected. Check RUN command source (A002) for correct source.
Ex. Terminal (digital input) : 01
Operator (RUN key) : 02
Incorrect frequency source is selected. Check frequency source (A001) for correct source.
Ex. Terminal (analog input) : 01
Operator (F001) : 02
Frequency setting is 0Hz. If frequency source is terminal (A001=01), check analog voltage or
current signal at [O/OI] terminals.
If frequency source is operator (A001=02), set frequency in F001.
Depending on frequency source, input proper frequency reference.
If frequency source is multi-speed operation, set frequency in A020
to A027 and A220.
RUN command is not set to input terminal. If RUN command source is terminal (A002=01), set "forward"
(00:FW) or "reverse" (01:RV) to any input terminals. In case of
3-wire control, set "3-wire start" (20:STA), "3-wire stop" (21:STP)
and "3-wire FW/RV" (22:F/R) to any input terminals.
“Multi-speed input(s) (02 to 04:CF1 to
CF3)” is (are) set to input terminal(s) and
active. Deactivate the input(s).
Both FWD and REV input are active. If RUN command source is FWD/REV input, activate either FWD or
REV input.
Rotation direction restriction (b035) is
enabled. Check b035.
Incorrect input wiring or short bar position Wire inputs correctly and/or install short bar. (ON/OFF status of
inputs are monitored in d005.)
Incorrect analog input or variable resistor
wiring Wire correctly.
In case of analog voltage or variable resistor input, check voltage
between [O/OI] and [L] terminal.
In case of analog current, check current between current source and
[O/OI] terminal.
RUN command source is operator, but
input terminal is set to "Force terminal" and
active. Deactivate the input.
RUN command source is terminal, but
input terminal is set to "Force operator" and
active. Deactivate the input.
Inverter is in trip status.
(With ALARM LED and "Exxx" indication) Reset inverter by STOP/RESET key and check error code or Power
OFF the inverter.
"18:RS" or "11:FRS" is set to input terminal
and the input is active. Deactivate the input.
"84:ROK" is set to input terminal and the
input is active. Activate the input.
Cable between inverter and motor or
internal cable of motor is breaking. Check the wiring.
Excessive load. Remove excessive load.
Motor is locked. Unlock the motor.