Replacing the Battery Section 5 Maintenance
192 3BSE036351-510 A
Replacing the Battery
Internal Battery
The internal battery is mounted inside the PM8xx processor unit (except PM891).
Since the battery is not rechargeable, it is important to exchange it on a regular basis
(refer to the Maintenance Frequency Schedule for further details). For details of
correct battery polarity, remove the right-hand cover from the battery housing
(see Figure 63 on page 193 and Figure 64 on page 194).
Specifications for the internal battery:
• Type: Low-rate lithium battery, 3.6 V, 9 5 0 mAh.
• Size: ANSI Size ½ AA / IEC size ½ R6
• Lithium contents: 0.3 g
5 Years SB821
External Battery
(if fitted)
Change battery
See SB821 External Battery Unit on page
195
3 years or 400
discharge cycles
SB822
Rechargeable
External Battery
(if fitted)
Change battery
See SB822 Rechargeable External Battery
Unit on page 197
This topic does not apply to PM891, which does not contain internal battery.
Due to the batteries being connected in parallel, it is necessary, when using the
SB821 external battery, to remove the internal battery from the PM8xx in order to
avoid reducing available memory back-up time.
It is possible to replace the internal battery with the AC 800M Controller online.
However, be sure to observe standard safe working practices at all times.
Table 25. Preventive Maintenance Frequency Schedule (Continued)
Frequency Equipment Procedure
To Next Page
Loading...
Need help?
General
