Siemens Sinumerik 810T - Manual (Page 279)

11.90 5 Maintenance
5.3 Exchanging the battery in the battery receptacle
Replacing the battery in the battery receptacle
• The battery backs up:
– The part-program RAM memory
– The working memory
– The PLC user memory
– The machine data memory
The back-up time of the battery is 1 year.
• When alarm number ”1” is displayed, the battery should be replaced.
• The battery should be exchanged within one week of the alarm appearing.
For the battery type, please see the Instruction Manual. To order, contact your local
Siemens Service Centre.
1) Control must be switched on when replacing battery.
2) When changing, take care that the polarity is correct!
3) When disposing of battery, certain requirements have to be met. Any
enquiries with respect to this should be addressed to the local
authorities.
5.4 CRT display
The picture on the CRT display can oscillate when the monitor is exposed to electromagnetic
fields. Devices which generate electro-magnetic fields, such as transformers, fans, electro-
magnetic switches, a.c. cables under power, etc., must be more than 300 mm away from the
CRT display unit.
© Siemens AG 1990 All Rights Reserved 6ZB5 410-0EP02 5-3
SINUMERIK 810T, GA3 (BN)