Alpha 6000S series User Manual page 17

Chapter 2 Installation and Wiring
Fig. 2-13 Terminal arrangement of extension board (optional for 35R5GB and above models)
In order to reduce interference and attenuation of control signal, the length of control cables should be limited
in 50m and away from power cables for more than 30cm. Avoid control wire and power wire being parallel. Try to
use STP (Shielded Twisted Pair) to connect analog input and output signal.
Catego Terminal
ry label
AI1 Analog input 1
AI2 Analog input 2
Analog input 3
AI3 (Only for 35R5GB
and above)
AO1 Analog output 1
Analog output 2
AO2 (Only for 35R5GB
and above)
AO3 Reserve
485+
RS485
communication
interface
485-
16
X7 X8 X9 X10
24V1 PLC1 COM1
Table 2-8 Function of control circuit terminals
Description of terminal
Name
Receive voltage/current input.
Voltage and current are
selected by toggle switches
SW1, SW3, SW4. The range
span of factory default input
voltage is shown in
instructions in function code
P4.00 ~ P4.10 and P4.16 ~
P4.20.
Provide analog
voltage/current output. It
represents 14 magnitudes.
The output voltage and
current are selected by switch
SW2. The factory default
input voltage is shown in
instructions in function code
P4.21.
Provide analog
voltage/current output. It
represents 14 magnitudes.
The output voltage and
current are selected by switch
SW5. The factory default
input voltage is shown in
instructions in function code
P 4.22.
Reserve
485 differential signal
positive terminal
485 differential signal
negative terminal
BRA BRB BRC
COM1 Y2
CME1
function
Range of AI1, AI2 input signals:
Range of AI3 input signal:
The input impedance is 30kΩ while
inputting voltage signal. The input
impedance is 250Ω while inputting the
current signal
Reference ground: GND
Current output range: 0/4 ~ 20mA
Voltage output range: 0/2 ~ 10V
Reference ground:
Standard RS-485 communication
interface,
Not isolated to GND
Please use twisted pair or shielded
cable
Y3
Specification
0~10V or 0~20mA
-10~10V or -20~20mA