Table of Contents
Important: Horizontal mounting is highly recommended. Vertical mounting is possible, however,
derating consideration should be made to avoid problems with poor air circulation and the potential for
excessive temperatures (see also the AC500 system data, operating and ambient conditions, for
reduction of ambient temperature).
Note: By vertical mounting, always place an end-stop terminal block at the bottom and on the top
of the module to properly secure the modules.
By high-vibration applications, we also recommend to place end-stop terminals at the right and the left
side of the device to properly secure the modules:
e.g. type BADL, P/N: 1SNA 399 903 R0200
Insertion / replacement of the Lithium battery
AC500 CPUs are supplied without a Lithium battery. It therefore must be ordered separately. The TA521
Lithium Battery is used to save RAM contents of AC500 CPUs and back-up the real-time clock. Although
the CPUs can work without a battery, its use is still recommended in order to avoid process data being
lost.
The CPU monitors the battery status. A low battery error is output before the battery condition becomes
critical (about 2 weeks before). After the error message appears, the battery should be replaced as soon
as possible.
Attention: The TA521 Lithium Battery is the only one, which can be used with AC500 CPUs.
The following procedures describe the insertion / replacement of the Lithium battery.
WARNING!
Use of
incorrect
battery may
cause fire or
explosion.
3
Figure: Insertion / replacement of the Lithium battery
____________________________________________________________________________________________________________
V2
AC500 Hardware
WARNING!
Use of
incorrect
battery may
cause fire or
explosion.
1a
1b
4+5
1-22
System data
2
WARNING!
Use of
incorrect
battery may
cause fire or
explosion.
6
AC500 / Issued: 05.2007
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