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The Model TU2170 SCR assembly with digital communications
control is used for three phase resistive or infrared loads that are
supervised or controlled by a communications link. With line currents
from 40A–500A up to 500V max, the TU2170 performs time proportioning
control of two phases of a three-phase resistive load (three-wire
wye or delta). A variety of analog inputs are accepted and fast and
single cycle firing modes may be selected. The TU2170 has partial
load failure for resistive or IR loads |
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and uses V-squared
or VxI feedback. Digital communications are available with Profibus®,
Modbus®, JBUS or EI-Bisynch protocol. Automatic transfer to analog
setpoints occurs in the event of communications failure. Alarms may
be annunciated by LED’s, a relay contact or via the serial link.
Units 100A and up are fan cooled. Fuses are external (above 250A–
internal) and ordered separately. It may be used with the model 260
Diagnostic Unit. |
大连爱克新仪器有限公司
40-500 amps, 500V max.