A controller, or a compensator is an additional system that is added to the plant to control the operation of the plant. The system can have multiple compensators, and they can appear anywhere in the system: Before the pick-off node, after the summer, before or after the plant, and in the feedback loop.
B unit of the Russian 3TE10MK locomotive. A B unit, in railroad terminology, is a locomotive unit (generally a diesel locomotive) which does not have a driving cab or crew compartment, and must therefore be controlled from another, coupled locomotive with a driving cab (an A unit). The terms booster unit and cabless are also used.
Inventory of available comparative use is high, both exiting, new and to-be-built. Unit B is in the lower back corner with good signage on the building out front. Current use is a Family Dentistry. BPO was received on Fri night and requested completion Monday noon so I am not able to enter unit. Concern/question is would the sale include equipment, my guess that personal property is under seperate financing/lease and will be retrieved. Good parking/access.