![Veichi JT550 Series Скачать руководство пользователя страница 34](http://html1.mh-extra.com/html/veichi/jt550-series/jt550-series_manual_3985972034.webp)
Chapter 3 Electrical Installation
JT550 Series Inverter Manual
- 34 -
3) Wiring of Control Circuit Terminals
a) AI Terminals
:
Weak analog voltage signals are easily interfered, and therefore the shielded cable
must be used and the cable length must be less than 20 m, as shown in following figure.
+10V
GND
AT500
小于
20
米
电位器
AI1
Figure 3.18 Diagram of AI Terminals
AI1
GND
AT500
同向穿过或
同向绕
2-3
匝
铁氧体磁环
外部模拟源
0.22uF 50V
C
Figure 3.19 Wiring of AI Terminals
b) Wiring of DI terminals
Generally, select a shielded cable that is no longer than 20 m. When active drive is adopted, it is
necessary to apply filtering in order to prevent the interference to the power supply. It is recommended
to use the contact control mode.
SINK Wiring
+24V
+24V
PLC
X1
X5
C0M
6K
6K
变频器控制板
+VCC
信号
0V
NPN
R
外部控制器
Figure 3.20 Wiring in SINK Mode
This is one of the most commonly used connection mode. If you use an external power supply, you must
remove the jumper bar b24V and PLC. Anode of the external power needs to be connected to
PLC terminal, and cathode needs to be connected to COM terminal.
<20m
Potentiometer
Ferrite Magnet Ring
External Analog
Input
External Controller
Control Board
of the Inverter
signal
JT550
JT550