Best E5 Series User Manual page 21

E5 User Manual
Terminal Mark
R, S, T
U, V, W
P1, P+
P+,P-
PE
2.4.3 Main Loop Connection
1. The crimping terminals for power supply or motors must be with insulation tube.
2. Keep in mind that NEVER connect power supply to output terminals of inverter (U, V, W),
otherwise it will damage inverter.
3. After wiring is finished, odd wires must be cleaned up, otherwise they may cause abnormal
performance, failure or fault. When boring on control stand, be aware to prevent the
fragments and powders from entering into inverter.
4. To keep the voltage drop within 2%, please use proper electric wires for wiring. When the
distance between inverter and motor is long, especially under the condition of low frequency,
motor torque will decline due to the decrease of main loop wire voltage.
5. Maximum line distance is 500m, especially for long-distance wiring. Because the parasitic
capacitor generates surge current, which may cause current protection, there will be the
abnormal performance and faults of the devices connected to output terminal. Therefore,
please refer to the maximum wiring distance as below (when inverter connects two or more
motors, wiring distance shall be within 500m):
Inverter Capacity
Non-ultra-low noise
mode
Ultra-low noise
mode
6. It is recommended to connect optional braking resistor between P+ and B- terminals.
7. Electromagnetic wave interference: there is harmonic wave in inverter input & output
circuits. In high-demanding circumstances please install wireless noise filter on input
terminal, to minimize the interference.
8. On inverter output terminal, DO NOT install power capacitor, surge suppressor or wireless
Terminal Name
Three-phase AC input
terminals
Inverter output
DC reactor connection
terminals
DC power supply input
terminals
Grounding
Below 11KW
100m
50m
Chapter 2 Installation and Connection
Connect to the power frequency supply
380V 50-60Hz
Connect to three phase asynchronous
Connected with a jumper as factory default
DC input terminals of externally mounted
Inverter grounding, must be properly
15-110KW
150m
80m
- 17 -
Explanation
motor
brake unit
grounded
Above 132KW
200m
100m