Control Loop Terminal Wiring Specification; Braking Unit (Braking Resistance) Connection; Brake Resistance Wiring Of Machine With 30Kw Or Above; Suggested Braking Resistance Specification Parameters - Veichi AC300 Series Technical Manual

AC300 Series Vector Control Inverter Manual
X2-PLC Multi-function contact input 2
X3-PLC Multi-function contact input 3
X4-PLC Multi-function contact input 4
Multi-function contact input 5
X5-PLC
X5/PUL-PL Multi-function contact input 5 / high
C speed pulse input
Analog
AO1-GND Analog output 1
output
Digital output Y-COM Digital output 1
TA-TC Normally open terminal
Relay output
TB-TC Normally closed terminal
A+ Communication terminal A+
communicati
on
B- Communication terminal B-
Terminal
● Control loop terminal wiring specification
Table 3-8: Control loop terminal wiring specification
Bolt specification
Terminal
(mm)
A+ B- M2.5
+10V GND A0 AI1 AI2
M2.5
+24V COM Y TA TB TC PLC
M2.5
X1 X2 X3 X4 X5/PUL

Braking unit (braking resistance) connection

● Brake resistance wiring of machine with 22KW or less power:
Installation and Wiring
bipolar inputs.
1. Input impedance: 4.4 KΩ
2. High-level input voltage range: 10 ~
30V
3. Low-level input voltage range: 0 ~ 8V
In addition to the features of X1 ~ X4, X5
can also be used as a high-speed pulse
input channel
(separate model).
1. Optocoupler isolation, compatible with
bipolar input, maximum input frequency:
100KHZ
2. Input impedance: 1.5KΩ
3. Pulse input level range: 10 ~ 30V
1. Output voltage range: DC 0V ~ 10V
2. Output current range: DC 0mA ~ 20mA
3. Pulse output range: 0 ~ 50kHz
Optocoupler isolation, open collector
output
1. Output voltage range: DC 0V ~ 30V
2. Output current range: DC 0mA ~ 50mA
Contact drive capability:
240VAC, 3A
30VDC, 5A
RS485 communication interface.
Select the RS485 communication access
120ohm terminal resistance by the toggle
switch S4 (see Table 3-5 for details)
Cable
Fixed moment
specification Cable type
(N·m)
(mm2)
Twisted-pair
0.4~0.6 0.75
shielded cable
Twisted-pair
0.4~0.6 0.75
shielded cable
0.4~0.6 0.75 Shielded cable
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AC300 Series Vector Control Inverter Manual
Fig 3-9: AC300 series frequency inverter brake resistance wiring of machine with 22KW or less power
● Brake resistance wiring of machine with 30KW or above
Fig 3-10: AC300 Series Frequency Inverter Brake resistance wiring of machine with 30KW or above
● Suggested braking resistance specification parameters
Braking resistance value and power in the chart are decided according to common inertia load and intermittent
braking mode. While used in large inertia occasion or long time frequent brake occasion, please adjust resistance value
and power according to the inverter specification and the rated parameter of braking unit. If any problem, please consult
customer service department of Veichi Electric Com., Ltd.
Table 3-9: Suggested braking resistance specification parameters of AC300 series inverter
Three-phase 380V
Motor power(kW) Resistance value(Ω)
0.75 kW 750Ω
1.5 kW 400Ω
2.2 kW 250Ω
4.0 kW 150Ω
5.5 Kw 100Ω
7.5 kW 75Ω
11 kW 50Ω
15 kW 40Ω
18.5 kW 32Ω
Installation and Wiring
Braking torque
Resistance power(W)
150W 100%
300W 100%
400W 100%
500W 100%
600W 100%
780W 100%
1,200W 100%
1,500W 100%
2,000W 100%
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