Pilz PSS 3075-3 Series, Manual

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Operating Manual: PSS 3075-3 Series
9-3
Changing the battery
If the battery voltage drops below 2.5 V, the CPU will issue the error
message “S-04”. You should then change the battery, Only use a battery
type that has been approved by Pilz (see chapter entitled “Technical De-
tails”). Battery types that are approved by Pilz are “UL-Recognized”.
CAUTION!
• Damage due to electrostatic discharge!
Electrostatic discharge can damage components on the safety system.
Ensure against discharge before touching the PSS, e.g. by touching an
earthed, conductive surface or by wearing an earthed armband.
• Data loss!
The battery should be changed when the supply voltage is switched off.
The CPU will retain data for approx. 2 minutes. If it takes longer to
change the battery, data will be lost.
WARNING!
Risk of injury due to improper handling or due to damaged lithium
batteries!
Lithium batteries may only be exchanged by specialist staff who have been
trained to deal with lithium batteries.
Dead batteries must be disposed of properly!