Mitsubishi MELSEC-F FX3U Series User Manual

D-21
6 Troubleshooting
6.1 PLC Version Number Check
FX 3U /FX 3UC Series PLC User's Manual - Analog Control Edition
FX3U-4DA-ADP (4-channel analog Output)
A
Common Items
B
FX
3UC
-4AD
C
FX
3U
-4AD-ADP
D
FX
3U
-4DA-ADP
E
FX
3U
-4AD-PT
-ADP
F
FX
3U
-4AD-TC
-ADP
G
PID Instruction (FNC 88)
6. Troubleshooting
This chapter describes the troubleshooting methods and error status.
If analog data is not output, or if the proper analog value is not output, check the following items:
• Version number of PLC
• Wiring
• Special devices
• Programs
• Error status
6.1 PLC Version Number Check
• Any versions (from Ver.2.20 (initial version) to the latest version) of the FX3U Series are compatible.
• Check the version number of FX
3UC-32MT-LT. The version number should be 1.20 or later.
→ For a detailed description of the version number check method, refer to Section 1.3.
6.2 Wiring Check
Check the following items for wiring:
1. Power
4DA-ADP needs driving power. Verify that the power supply line is properly connected. Also check that the
POWER indicator lamp of 4DA-ADP is on.
2. Analog output line
Use the 2-core twisted shielded pair cable for the analog output line. In addition, be sure to separate the
analog output line from the other motive power lines or inductive lines.
→ For a detailed description of wiring, refer to Chapter 3.
6.3 Special Device Check
Check whether the special devices for 4DA-ADP are correctly used:
1. Switching of output mode
Verify that the special device for switching the output mode is correctly set.
Turn off the device to set the output mode to the voltage output mode. Turn on the device to set the output
mode to the current output mode.
2. Output setting data
Check that the special device of the selected channel is correctly selected. This special device should be
selected depending on the connected position and the channel.
3. Error status
Check that no error is detected on 4DA-ADP.
If an error is detected, check the details of the error, and then check the wiring and programs.
→ For a detailed description of special devices, refer to Chapter 4.

Mitsubishi MELSEC-F FX3U Series Specifications

General

Brand	Mitsubishi
Model	MELSEC-F FX3U Series
Category	Controller
Language	English