ABB 3HAC022227-001

ABB 3HAC022227-001

Sales Manager :Yuki  / Phone: +8617359287459

Email: sales15@amikon.cn  / Skype:+8617359287459

  PM8xx/TP830 Processor Unit – Redundancy 

Processor unit redundancy is available for PM857, PM858, PM861, PM862, PM863,
PM864, PM865, PM866, PM867 and PM891. In this case, the controller contains two
processor units, each including memory for system and application software. One unit
is acting as primary, the other is backup (hot stand-by). The primary processor unit
controls the process. The backup stands by, ready to take over in case of a fault in the
primary. The changeover is done bumplessly and in less than 10 ms. During the
changeover, the process outputs are frozen.

Following a changeover, the system operates as a system without redundancy with only
one processor unit in operation. You can replace the malfunctioning processor unit while
the system is running. After the replacement is carried out, the system once again has
a redundant processor unit.

If an error arises in the backup unit, you can also replace the backup unit while the system
is running.

Errors which occur in the backup unit can never affect the primary unit's operation. The
primary unit and the backup unit are logically separated from one another. Hardware
errors in the primary processor unit cause the system to perform a correct changeover.
These hardware errors are single errors.

The application programming and the communication are totally unaffected by the
redundancy.

E-mail : sales15@amikon.cn

 Moore ABB items you`re interested in  

ABB DSQC209	ABB DSQC252
ABB DSQC210	ABB DSQC253
ABB DSQC211	ABB DSQC254
ABB DSQC215	ABB DSQC255
ABB DSQC223	ABB DSQC257
ABB DSQC224	ABB DSQC259
ABB DSQC227	ABB DSQC266A
ABB DSQC228	ABB DSQC266B
ABB DSQC230	ABB DSQC266C
ABB DSQC233	ABB DSQC300
ABB DSQC235A	ABB DSQC301
ABB DSQC235B	ABB DSQC302
ABB DSQC236A	ABB DSQC306
ABB DSQC236H	ABB DSQC307
ABB DSQC236K	ABB DSQC313
ABB DSQC238	ABB DSQC314A
ABB DSQC239	ABB DSQC314B
ABB DSQC241	ABB DSQC315
ABB DSQC243	ABB DSQC316
ABB DSQC248	ABB DSQC317
ABB DSQC249A	ABB DSQC318
ABB DSQC249B	ABB DSQC320