There is full of metal powder on the sample returned from the application site. IGBT short-circuit is caused by the metal powder, and then it will be damaged.
Connect the run and fault reset signals of inverter to the control cabinet, upgrade the protection grade of the electric control cabinet to prevent the metal powder from entering the control cabinet.
If there is metal powder on-site, please do not open the door of electric control cabinet.
The fan is covered by metal powder.
EM100 supports external keypad to connect to the network interface RJ45 nearby the control terminal block. See Figure 3-22. But if 2 keypads are used simultanously, the potentiometer on the keypad would be damaged.
If the external keypad is used, please take off the keypad on the inverter.
Connect terminal GND of inverter to the terminal GND of touch screen, and only switch the terminal resistor switch S1(of the inverter at the far end) ON to start the internal terminal resistor of 120Ω. See the Figure below for reference
Multi-EM100 Connection with RS485
The maximum torque of EM100-0R4~4R0 shall be within 1.2Nm. The wiring terminal wound be broken if the tightening torque is too big. Recommended screwdriver for tightening:
PH0 cross screwdriver or cross screwdriver of industrial Grade 0# (The diameter of screwdrive shaft =3mm), or flathead screwdriver (The head width: 4.5~5.0mm).-theme-font:minor-latin;color:black;mso-themecolor:text1'>In addition, please connect 1-phase 220V input power cable to L1 and L2. Otherwise, there is no power supply, and no display on the keypad. k;mso-themecolor:text1'>If the function code has to be edited, it shall be finished by function code address+register address 2000H.
Inverter of SIZE 2 has 2 modes: AC input, 1-phase 220V and 3-phase 380V. The power terminal marks of EM100 old-model are not clear. For the new model of EM100, labels are beside the terminals to guide the user for wiring.
In addition, please connect 1-phase 220V input power cable to L1 and L2. Otherwise, there is no power supply, and no display on the keypad.If the function code has to be edited, it shall be finished by function code address+register address 2000H.
When setting frequency by communications, user can modify the setting frequency of F00.07 through register address 0007H. Multi-modification would damage the EEPROM of inverter, and inverter will trip Fault EEd.
Block Fault EEd through setting F07.17=0100 0000, inverter can modify the frequency through communication.
If a parameter has to be edited frequently, it shall be fulfilled by utlizing control command.
If the function code has to be edited, it shall be finished by function code address+register address 2000H.
Cause： Short circuit between inverter output phases, or between the.output phases and ground.
IGBT is damage.On-site interference.
Solution: Check if there is a short circuit.
Check, take corrective actions, and then reset.
Technical support is required.
Cause： Short circuit between inverter output phases, or between
output phase and ground.
Acceleration/deceleration time is too short.
Under V/F control mode, V/F curve has been set irrationally.
Motor is running when inverter starts.
Motor exceeds inverter capacity or load is too heavy.
IGBT damaged (HOC).
Solution: Check, take corrective actions, and then reset.
Prolong acceleration deceleration time.
Reduce setting value of torque boost.
Set speed search start enabled, or start DC brake.
Replace with applicable motor or inverter.
Cause： Deceleration time is too short and regenerated energy is too large.
Input voltage is too high.
Solution: Extend deceleration time.
Select appropriate braking unit/braking resistor.
Lower input voltage to the specified range.
Cause： Power grid voltage is too high.
Solution： Lower the voltage to the specified range.