Karda KD4000 Series, Руководство пользователя

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Chapter 2 Installation and wiring
8
NO-CM
The open point of output
instruction signal
NC-CM
The closed point of output
instruction signal
FI-ACM
Input terminal of analog
current
4
～
20mA
FV-ACM Input terminal of analog voltage
0
～
+10V / Maximum
output frequency
10V-ACM Power for setting speed
+10V Speed instruction
power
A+ Communication terminal A
RS485
B+ Communication terminal B
§The control signal wire is shielded and stranded
§ Wire for RS-485 communication should be the twisted pair
2.6 Safety Considerations
1. Please use right wires according to relative laws. When the distance
between inverter and motor is over than 25meters, should raise wiring
standard.
2. Between the three-phase AC input power and main circuit terminal
(R,S,T) there must be a fuse switch. Make an electromagnetic contactor
in series to cut off power before the inverter steer its protection.
3. Ground terminal to the first grounded wiring.
The ground impedance must be less than 100R. Or make the ground
wire dimension is same with the main circuit wires.