above: ABB Industrial Drive -- ACS800. They are complete AC variable speed drives,
which can be installed without any additional cabinet or enclosure and used in
process industries such as pulp and paper, metals, mining, cement, power, chemical,
and oil and gas. [ABB ACS800 industrial AC inverter drives with direct torque
control (DTC) as standard are available both as complete AC drives and as modules
to meet the requirements of the users, OEMs and system integrators. The ACS800
range of ac inverters are highly flexible and can be configured to meet the precise
needs of industrial applications, and hence order-based configuration is an integral
part of the offering.]
above: Motor Soft Starters by ABB. A less-cost alternative to VSDs.
above: Reliance Electric MD60 AC motor drive.
above: An extremely simple AC drive: DC2 Drive by Reliance Electric.
Depending on your app. or budget, this may be all you need.
above: Reliance Electric's SP600 NEMA 4X/12. Washdown and Dust-Tight.
Prices depend on HP, starting around $1500.00 for 0.5HP, up to $4800.00 for 20HP.
[Key Attributes: Sensorless Vector Control (SVC); Operator Interface; Multi-line
Graphic LCD Display; Icon Menu; Scalable Monitor Display; Control Modes; V/Hz.
Sensorless Vector; Fan/Pump V/Hz.; Internal PI regulator; Flow control; Pressure
control; Position control; Auto Tuning.]
Know a starter from a relay from a contactor from
a contactor? With so many choices these days, and with technologies
merging, the differences seem confusing. Try to guess what each of these may
be. For the answer, cursor over each of these images...
Electromechanic Motor Starter; Electronic Motor Starters with Integrated Soft
Starter Function
Motor Starter: This Siemens isolator module with its switch disconnector function
serves to safely isolate the 400 V operating voltage when repair work is being
carried out in the plant. It features an integrated group-fusing function, i.e.
additional group short-circuit protection for all series-connected motor starters.
Depending on their power distribution concept, all stations can be optionally
fitted with an isolator module.
Siemens SIRIUS Relays--functional block diagram
Timing Relays--Electronic timing relays are employed for all time-delayed switching
processes in control, starting, protection and regulation circuits.
