Alpha ALPHA6000 Series - Page 17

Chapter 2 Installation and Wiring
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17
Fig 2-12 35R5GB/37R5PB～3500GB Arrangement of Control Circuit Terminals
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.
● Function of Control Circuit Terminals
Table 2-8 Function of control circuit terminals
Category Terminal Name Functions Specifications
Analog
input
AI1
Analog
input1
Be able to accept
voltage/current input.
Data-chosen-switch
SW1 can select
voltage or current
input mode. Voltage
input mode is the
default mode, refer to
P4.00～P4.10 to set
the range.(The
reference ground is
Input voltage range:
0～10 V
(Input resistance:
100 kΩ)
Input current range:
0～20 mA
(Input resistance:
500Ω)