IPS provided the PLC programming and MMI graphic computer system for this paper/pulp mill's
entire raw materials area.
The wood chip conveying system includes several thousand feet of conveyor with seperate, but integrated chip storage,
reclaim, and screening systems. The MMI and PLC controls allow the operator to select one
of many automated conveying routes and then press one button on the MMI to start the
selected path. Conveyors start in sequence while the system monitors all conveyors
for chute plugs, belt slippage, and pull chords.
The reclaim system uses large AC variable frequency drives to run the motors which provide a variable feed of
chips to the pulp mill based upon demand. The operator can view the running, stopped, or tripped
status of each component of the conveying and screening systems while simultaneously monitoring
total conveyed tonnage.
This Ethylene-Glycol Plant in Dzerzhinsk, Russia uses our systems to control their critical oxygen
mixing operation.
The plant produces over 200,000 tons of EG per year.
Accurate and consistent control of the Oxygen Mixing Stations is very critical in
the production process because inconsistency can quickly create an highly explosive
environment.
IPS provided and programmed the OMS controllers along with their "hot" back-up systems.
A Honeywell TDC 3000 DCS communicates with the PLCs for status and
control information. We implemented a unique communication scheme to ensure an
ultra-reliable system with a "bump-less" transfer to hot back up if needed.
IPS engineers completed the start-up on site in Russia and were toasted at a banquet hosted
by our Russian customer to celebrate our successful completion of this project.