Analog output wiring
The following figures show wiring of the analog output.
Using voltage output
Shielded
*1
*2
Using current output
*2
External power
supply wiring
24 V DC
Grounding
(Ground resistance:
100 Ω or less)
□
□
□
V
+, I
+, COM
, CH
*1 For analog output wiring, use shielded twisted-pair cables (double-core type). Separate them from other power lines or lines which can
be induced by others.
*2 Ground a shielded cable at one point on the signal receiving side.
Grounding
Perform the following.
• Perform class D grounding (Grounding resistance: 100 or less).
• Ground the PLC independently when possible.
If the PLC cannot be grounded independently, perform the "Common grounding" shown below.
For the details, refer to the following manual.
MELSEC iQ-F FX5U User's manual (Hardware)
MELSEC iQ-F FX5UC User's manual (Hardware)
Other
PLC
equipment
Independent grounding
(Best condition)
• Use a grounding wire with thickness of AWG 22 to 20 (0.3 to 0.5 mm
• Locate the ground point as close to the PLC as possible to minimize the length of the grounding wire.
3 FX5-4DA-ADP
120
3.5 Wiring
FX5-4DA-ADP
Terminal
block
□
V
+
□
I
+
□
COM
□
V
+
□
I
+
□
COM
24+
Filter
24-
□
□
:
represents the channel number.
Other
PLC
equipment
Shared grounding
(Good condition)
Other
PLC
equipment
Common grounding
(Not allowed)
2
).