20 3BSE036351-510 A
Safety Summary
SPECIFIC
CAUTIONS
(continued)
Page 76: Do not manipulate the locking device. ABB will take no responsi-
bility for errors caused by manipulating locking devices.
-79 and Page 92: Do not place the internal back-up battery in the battery
holder until the AC 800M Controller has been powered-up normally and
the memory back-up function has been activated, that is, the B(attery)
LED flashes. If no normal power supply is connected to the processor unit
with the battery in place, then the CPU memory will immediately start to
consume battery power.
Page 90: Note that in redundant CPU configuration, COM3 and the electri-
cal ModuleBus on the baseplate can not be used.
Page 91: Note that the RCU Link Cable TK851 must be used and can not
be replaced by a similar cable. Using another cable will disable the identi-
fication of the CPUs in the CB and Operator Station. When running in sin-
gle configuration the RCU Link Cable TK851 might temporarily be used to
perform the function of a termination plug.
Page 98: Do not connect the two CEX-Bus segments, separated with
BC810, to each other with CEX-Bus extension cable TK850.
Page 98: In AC 800M High Integrity Controllers it is required that the exter-
nal supply input of BC810 is connected and that the power supply is
strictly configured either according to Figure 33 or according to Figure 34
and nor is it allowed to change the configuration by way of for instance
individual circuit breakers between modules.
Page 99: Hot swap of the BC810 located next to a primary or single con-
troller CPU, otherwise called “direct BC810”, might jeopardize the whole
controller and should not be performed unless every module on the
CEX-Bus are in a non-operating state. Note: In an AC 800M HI controller
this is unconditionally and intentionally leading to a shutdown of the con-
troller.
Page 112: It is not possible to change the CI851 unit via hot swap and it is
not allowed to perform an online upgrade of firmware in a system contain-
ing CI851.
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