Tools And Test Equipment; Preventative Maintenance; Environmental Consideration; Visual Inspection - Siemens ET 200M Manual

Maintenance
3.1

Tools and Test Equipment

The following tools and equipment are necessary for servicing:
• Common hand tools for servicing electronic equipment
• Digital Multimeter (DMM)
- Voltmeter Section:
- Ammeter section:
• Maintenance Kit, containing wrist strap and conductive mat.
3.2

Preventative Maintenance

The objective for establishing a preventive maintenance program is to provide
maximum operating efficiency.
Every preventive maintenance operation should assist in realizing this objective.
Unless a preventive measure reduces a station's down time, it is unnecessary.
3.2.1

Environmental Consideration

The system has been designed to operate within specified environmental
parameters (temperature and humidity).
3.2.2

Visual Inspection

As part of a periodic maintenance program, the system should be visually
inspected. When viewing the MTA, scan for abnormalities such as loose, broken or
stressed cables. Look for damaged circuitry and heat stressed parts. Check for
excessive dirt or dust build-up which may impede air flow and inhibit proper heat
dissipation.
36
o Accuracy +/-0.01% of reading
o Resolution 1.0 mV input
o
Impedance 10 MΩ
o Accuracy +/- 0.1% of reading
o
Resolution 100 μA
Marshalled Termination Assemblies for ET200M Remote I/O Modules
A5E00482820-12