12
2.2.2 Wiring of control circuit terminals
Type
Terminal
Name
Function
Specification
Shield PE
Shield
grounding
Used for the grounding of the shielded
layer of the wire. The shielded layer of
the analog signal wire, 485
communication wire and PG cable
wire can be connected to this terminal.
Connected to the main circuit wiring
terminal
internally
Power
supply
+10
+10V power
supply
To p10V reference power for
external load
Allowable maximum output current:
10mA
-10
-10V power
supply
To provide -10V reference power for
external load
Allowable maximum output current:
10mA
GND
+10V/-10V
power GND
The reference ground for analog signal
and +10V/-10V power
Internal isolated with COM
Analog
input
AI1
Analog
single-end
input AI1
To receive the single-end analog
voltage or current input with the analog
input voltage/current selected via the
jumper (reference grounding: GND)
Input voltage range: -10V~10V (input
resistance: 20k
Ω
), resolution: 1/4000
Input current range: 0mA~20mA (input
resistance: 246
Ω
), resolution: 1/2000
AI2
Analog
single-end
input AI2
AI3+
Analog voltage
differential
input AI3+ or
analog voltage
single-end
input
For the analog voltage differential input,
the AI3+ is the non-inverting input
terminal and the AI3- is the inverting
input terminal.
For the analog voltage single-end input,
AI3+ is the signal input terminal and
AI3- shall be connected to GND
(reference grounding: GND).
Input voltage range: -10V~10V (input
resistance: 15k
Ω
), resolution: 1/4000
AI3-
Analog voltage
differential
input AI3- or
analog voltage
single-end
input
Analog
output
AO1
Analog output
1
When providing the analog
voltage/current output, it can represent
27 values. The analog output of the
voltage/current is selected via the
jumper. (reference grounding:GND)
Voltage output range: 0/2~10V
Current output range: 0/4~20mA
AO2
Analog output
2
Communi
cation
RS485+
RS485
communication
interface
Positive end of 485 differential signal
(reference grounding: GND)
Standard RS485 communication
interface.
Please use twisted pair wire or shielded
wire.
RS485-
Negative end of 485 differential signal
(reference grounding: GND)
