Mitsubishi FX3U Series User Manual

FX3U Series Programmable Controllers
User’s Manual - Hardware Edition
247
14 Test Operation, Adjustment, Maintenance and Troubleshooting
14.4 Maintenance and Periodic Inspection
11
High-Speed Counters
12
Output Wiring
13
Wiring for Various Uses
14
Test Run, Maintenance, Troubleshooting
15
IInput/Output Powered Extension Units
16
Input/Output Extension Blocks
17
Extension Power Supply Unit
18
Other Extension Units and Options
19
Display Module
20
Terminal Block
14.4 Maintenance and Periodic Inspection
This PLC does not incorporate consumable parts that are factors in the reduction of service life.
However, the batteries and output relays (points of contact) have a limited life expectancy.
14.4.1 Procedures for checking model name
The model name of the main unit can be checked on the nameplate on the right side. After extension devices
are connected, the nameplate cannot be seen. Check the model name in the following places.
14.4.2 Periodic inspection - battery life, etc.
1. Battery
Standard life of FX3U-32BL: 5 years (at ambient temperature of 25°C (77°F))
[Free guarantee period: 1 year after delivery or up to 18 months after manufacture]
→ For frequency of replacement, refer to Subsection 22.3.1.
2. Other devices
When inspecting the battery, check the following points.
• Check that the temperature in the panel is not abnormally increased by other heat generating bodies or
direct sunlight.
• Check that dust or conductive dust has not entered the panel.
• Check for loosening of wiring and other abnormalities.
Part Life
Model FX
3U-32BL battery
Standard life: 5 years (at ambient temperature of 25°C (77°F))
[Guarantee for 1 year]
When the terminal block cover (output side)
is opened
When the top cover is removed
Model name
(abbreviation)
Model name
Output form R: Relay output
T: Transistor output

Mitsubishi FX3U Series Specifications

General

Brand	Mitsubishi
Model	FX3U Series
Category	Controller
Language	English