Yaskawa MEMOCON GL120 - Manual (Page 23)

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Introduction and Precautions
1.2.6 Maintenance
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1.2.6 Maintenance
WARNING Do not reverse the positive and negative terminals, charge, dismantle, heat, throw into fire or
short-circuit batteries.
These may cause explosion and/or ignition.
Caution Do not disassemble or modify Modules and Mounting Bases.
Doing so can cause fires, product failure, or malfunction.
Caution Do not replace any of the built-in fuses.
Replacing built-in fuse by users may result in failure or malfunction of the Power Supply
Modules. Built-in fuse must be replaced by a Yaskawa service department.
Monitor the Life of Battery
• Monitor the life of the built-in battery in the CPU Module. If the “BAT ALM” indicator lights,
replace the battery with a new one (replacement battery: BR-2/3A-1) within 2 weeks.
Delay in replacing the battery may result in the memory content loss of the ladder pro-
gram and the motion program in the CPU Module and any Motion Modules.
• When the BAT Module’s “ALARM1” indicator lights, be sure to replace the battery with an
ER6VC3N replacement battery within one week. Delay in replacing the battery may result
in the memory content loss of the rotation data in the absolute encoder.
Regularly Overhaul Power Supply Modules
• Overhaul the Power Supply Module once every 5 years.
Deterioration of parts such as smoothing capacitors may result in malfunctioning of pow-
er supply sections. When a Power Supply Module is used in one of the following environ-
ment, overhaul more frequently.
• When used in places subject to high temperature or humidity, or subject to high varia-
tions in these.
• When variations in the power supply (voltage, frequency, wave-form distortion, etc.) or
load are high.
• When subject to bad storage environments before use, including long-term storage or
stoppage.
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