Chapter 1 Safety Instructions
ET/EP/EH Series Intelligent Flexible Driver Manual
- 3 -
electromagnetic interference.
The inverter should be installed on metal or other flame retardant objects, away from
flammable objects and heat sources.
Beware of fire! Be sure that the inside of the inverter and its heat sink are free of any
debris (e.g., wood chips, iron filings, dust, paper).
A certain clearance is required between the inverter and the inverter, and between the
inverter and another device/the inner wall of an electrical cabinet. (For specific
requirements on clearance, please refer to 3.2.2 Installation orientation and spacing).
The inverter must not be installed horizontally.
1.2.5 Electrical connection
Wiring must be performed by a qualified electrical engineer, otherwise there is a risk of
electric shock or damage to the inverter.
Make sure that the power supply is disconnected before wiring, otherwise there may be a
risk of electric shock or fire.
Grounding terminal PE should be grounded reliably, otherwise there is a risk of electric
shock to the inverter shell.
Do not touch the main circuit terminal, and do not contact the main circuit terminal
wiring with the shell, otherwise there is a risk of electric shock.
When the power is turned on with the run signal on, the motor will automatically start
running. Therefore, make sure that the run signal is off before turning on the power.
Otherwise, there is a risk of injury.
When setting the 3-wire control, set the parameters of the multi-function input terminal
and then connect the control circuit, otherwise there is a risk of injury due to motor
rotation.
1.2.6 Trial operation
Do not connect the power input cable to the U/T1, V/T2, or W/T3 motor terminals, or
the motor cable to the R/L1, S/L2, or T/L3 power input terminals.
Power and signal cables must be laid in separate raceways with at least 30cm spacing
between them. The connected cables must not come into contact with rotating
mechanical parts.
It is absolutely forbidden to connect capacitors or LC/RC noise filters with phase lead to
the output of the inverter, as this will cause damage to the internal components of the
inverter.
Use crimp terminals with insulated sleeves for the wiring cables of the main circuit
terminals.
For the selection of inverter input and output cables, please select cables with
appropriate cross-section according to the inverter power.
When the cable length between the inverter and motor exceeds 100m or when running
with multiple motors, it is recommended to use output reactors to avoid over-current
from excessive distributed capacitance causing inverter failure.
Do not use loads other than three-phase AC motors.
When performing rotary type self-learning, be sure to take off the load. The motor will
To Next Page
Loading...