EM330D User Manual
A Special Purpose Inverter for Hoisting
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connected to external analog meter. The specifications of jumper are taken as:
0~20mA output current or 0~10V output voltage, here M0 and M1 correspond to JP1
and JP2 respectively.
See the figure below for wiring the jumper and terminals as per the mode.
GND
EM330D
M1
M0
JP1
M0: Analog voltage output
M0: Analog current output
JP2
M1: Analog voltage output
M1: Analog current output
3.3.2.5
Wiring Communication Terminal
Terminals A+ and A- are the RS485 communication interfaces of the inverter. The
control network between PC/PLC and inverter can be achieved through connecting
communication with PC or PLC. See Figure 3-15.
Connect to PC/PLC through RS485/RS232 converter:
A-
EM330D
A+
PE
RS485/RS232
Converter
PC/PLC
232 Communication
Interface
Figure 3-15 Wiring of Communication Terminals
3.3.3
Size of Control Circuit Cable and Screw
To lower interference and attenuation of control signal, the wire length of control
signal should be in a maximum of 50m, and the distance between the wire and the
power cable should be in a minimum of 30cm. Twisted-pair cable or shielded cable
shall be used when inputting analog signal externally.
It shall be best to take 0.5~1 mm2 cable as the control circuit cable.
There are two types of control loop wiring terminals for EM330D: clamp terminal and
barrier terminal, install them with a PH0 cross head screwdriver. The tightening torque
of screw is 0.5N.m. Please pay attention to followings based on different features of
these two terminals:
