YOKOGAWA DTSXL, User Manual, Page: 268 / 289

< PART – C Operation and Maintenance >
C-15
IM 39J06B40-01EN 14th Edition: May 30, 2022
C4. Hardware Maintenance
This chapter describes maintenance (inspection, hardware replacement, etc.) for
ensuring uninterrupted system operation.
C4.1. Periodic Inspection
The periodic inspection items consist of the minimum inspection items to check for
operation malfunctions. Using the system under the optimal conditions will allow stable
operation.
Table Daily Inspection Items
Inspection
item
Inspection content Assessment criteria
Power supply Is the voltage deviation measured at the
power supply terminal within specifications?
Depends on the specifications for
each power supply module
Environment Is the ambient temperature (temperature
within panel) normal?
-40 to 65
°
C (*1)
Is the ambient humidity (humidity within
panel) normal?
20 to 80 % RH (No condensation) (*1)
Is the environment free of dust or debris? No dust or debris.
Installation Is each module installed properly? No looseness.
Are the connectors for cables inserted
properly and securely attached?
No looseness.
Are any of the external wiring screws loose? No looseness.
Are any external wiring cables severed? No external anomaly.
Optical fiber Are optical fiber connections secure? No looseness.
Are any optical fibers subjected to excessive
bending and stress?
No excessive bending and stress.
LED Display Does the LED for each module indicate
proper operation status?
Depends on the specifications for
each module.
RAS
information
Does the RAS information indicate proper
operation?
RAS indicates normal operation (*2)
Has self-diagnosis detected any anomaly? No anomaly has been detected.
*1: Depends on the specification of each module.
*2: Verify the content of RAS information.
SEE ALSO
For details on RAS information, see Subsection B11.1.2, “RAS (Reliability Availability Serviceability)
Information.”

Tools Needed for Inspection
- Screwdriver, flathead screwdriver
- Tester or digital voltmeter
- Thermometer
- Humidity measurement device
- PC, Control Visualization Software (DTAP3000)