ABB AC 900F, Mounting And Installation Instructions Manual

Page: 95 / 156

M&I – AC 900F Controller 95
Section 7 Commissioning
This section provides information on the basic operations required for first
commissioning of the controller.
Data backup
Data backup is not possible without a battery when the supply voltage is switched
off.
.
To insert the battery, proceed as described below.
Insertion of the TA 951F battery
Remove the detachable front panel of the CPU module or the display unit installed
in this position. The following drawing shows the mounting position of the battery
behind the fixed housing front part.
The new CPU module housing has been equipped with a battery compartment that
replaces the previously used battery holder.
Module with battery compartment (new)
Push the battery to the left into the battery compartment. It will be locked
in place by the front panel or the display unit.
The use of unsuitable batteries leads to explosion or fire hazards. This is why
exclusively TA 951F lithium batteries must be used for the PM CPU module.
As soon as the battery is connected and the controller is not supplied with
operating voltage, buffering and battery unloading are started.