Omron DeviceNet CV Series Operation Manual page 159

Analog I/O Terminals
Terminal Arrangement
DRT1-AD04
DRT1-AD04H
Wiring: DRT1-AD04 and
DRT1-AD04 H (Common)
Input Ranges and
Converted Data
142
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Note The DRT1-AD04H has insulation between the inputs, so there is no need for
the user to be concerned with the internal circuitry.
SOURCE
24 V DC
+
SOURCE
24 V DC
±
SOURCE
24 V DC
+
SOURCE
24 V DC
−
Connect the power supply and inputs (voltage input or current input) to the
Analog Input Terminal's terminal block as shown in the following diagram.
Internal circuits
power supply
SOURCE
24 V DC
+
–
– +
Internal circuits
power supply
Do not connect the shield when using shielded cables for the inputs.
The Analog Input Terminal converts analog input data to digital values. The
digital values depend on the input signal ranges, as shown in the following
diagrams.
Note When the input exceeds the specified range, the AD conversion data will be
fixed at either the lower limit or upper limit.
+
+
+ +
+
±
±
±
Voltage input
connection
V+ I+
–
Shield
0 V
Section 4-8
+ +
+
±
Current input
connection
V+ I+
–
Shield
0 V
(With current inputs,
short-circuit the V+ and I+
terminals.)