ABB AC 800M

Section 4 Operation AC 800M Controller (PM8xx)
3BSE 027 941 R301 109
Section 4 Operation
This section describes the operation of the AC 800M Controller, comprising a
PM8xx (single or redundant configuration) processor unit, together with various
optional units. For additional technical information on optional units, see Appendix
A, Hardware Units.
AC 800M Controller (PM8xx)
Equipped with Control Software, the basic PM8xx/TP830 hardware units mounted
on the AC 800M hardware platform constitute an AC 800M Controller.
LED Indicators
Table 15. PM8xx – LED Indicators
Marking Color Function
F(ault) Red Normal state – OFF
Re-start (INIT) temporarily lit F(ault).
May also be operated by software program.
R(un) Green Normal state – ON
Re-start (INIT) temporarily extinguishes
R(un). At restart press the (INIT) push
button (3 sec. or more) until R(un) flashes.
May also be operated by software program.
P(ower) Green Normal state – ON
When lit, indicates that the CPU DC/DC
converter is generating valid +5 V and
+3.3 V DC supply voltages.
No software control.