Terminal Screws And Wiring Specifications; Cautions For Main Circuit Wiring; Main Circuit Cable And Screw Specifications - Veikong VFD500 Series Operation Manual

Chapter3 product appearance and wiring

3.2.3 Terminal screws and wiring specifications

Model number
VFD500-R75GT4B
VFD500-1R5GT4B
VFD500-2R2GT4B
VFD500-3R7G/5R5PT4B
VFD500-5R5G/7R5PT4B
VFD500-7R5G/011PT4B
VFD500-011G/015PT4B
VFD500-015G/018PT4B
VFD500-018G/022PT4B
VFD500-022G/030PT4B
VFD500-030G/037PT4
VFD500-037G/045PT4
VFD500-045G/055PT4
VFD500-055G/075PT4
VFD500-075G/090PT4

Cautions for Main Circuit Wiring

3.2.4
（1） Power Supply Wiring
◆ It is forbidden to connect the power cable to the output terminal of the inverter. Otherwise, the internal
components of the inverter will be damaged.
◆ In order to provide input side overcurrent protection and power outage overhaul convenience, the inverter should
be connected to the power supply through circuit breakers and contactors.
◆ Please confirm the power phase, the voltage is consistent with the product nameplate, do not match may result
in damage to the inverter.
（2）DC wiring
◆ Do not connect the braking resistor directly to +, -, which may cause the inverter to be damaged or
even fire.
◆ When using the external brake unit, pay attention to +, - can not be reversed, otherwise it will cause
damage to the inverter and brake unit or even cause a fire.
（3） Motor Wiring
◆It is forbidden to short circuit or ground the inverter output terminal, otherwise the internal components
of the inverter will be damaged.
VFD500 high performance vector control frequency inverter user manual
Table 3-3 Main circuit cable and screw specifications
Power terminal
Tightening
Screw
torque（Nm）
M3 1.5
M3 1.5
M3 1.5
M3 1.5
M4 2
M4 2
M5 4
M5 4
M6 4
M6 4
M8 10
M8 10
M8 10
M8 10
M10 20
Cable
diameter screw
2
（mm ）
2.5 M3
2.5 M3
2.5 M3
4 M3
6 M4
6 M4
10 M5
10 M5
10 M6
16 M6
16 M6
16 M6
35 M8
50 M8
70 M10
- 14 -
Ground terminal
Cable
Tightening
diameter
torque（Nm）
（mm
1.5
1.5
1.5
1.5
2
2
4
4
4
4
5
5
8
8
20
2
）
2.5
2.5
2.5
4
6
6
10
10
10
16
10
10
16
25
35