EM330D User Manual
A Special Purpose Inverter for Hoisting
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1.2.8
Parameter Copy
All function parameters of EM330D can be copied through keypad.
1.2.9
Low Noise Operation
Due to the high frequency harmonic wave with the output of inverter, the motor
generates the electromagnetic noise inevitably. Usually, electromagnetic noise can be
lowered by increasing carrier frequency, which, however, in turn makes the inverter
overheat. EM330D achieves low noise operationwith low carrier frequency by carrier
frequency modulation.
1.2.10
User Password
User can set password to protect function parameters from unauthorized editing.
1.3
EM330D Operation Status Define
1.3.1
Operation Status of Inverter
Parameters setting status
After power is on, inverter finishes initialization and enters standby status without
fault or start-up command. Meanwhile, it does not output.
Normal running status
After receiving active start command through keypad, control terminal or RS485, the
inverter drives motor in accordance with the requirements of setting input.
JOG running status
Set by keypad, external terminal or RS485 to make motor run as per JOG input speed.
JOG stop status
Refer to the process that the output frequency drops to zero in JOG deceleration time
after JOG running command is not active.
Autotuning status
Set by keypad to autotune motor’s parameters in stationary or rotational autotuning.
Stop status
Refer to the process that the output frequency drops to zero in given deceleration time
after running command is not active.
Fault status
Status of inverter at protections, all kinds of faults and failures.
