TB850 3BSC950193R1

Brand:ABB

Type:TB850 3BSC950193R1

Origin: the Swiss

Warranty: 365 days

Colour: new/used

Shipping method: Courier delivery

Module of PLC, DCS, ESD system card, the card is a vibration monitoring system, steam turbine control system module, the advantages of the gas generator spare parts brand: Allen Bradley, BentlyNevada, ABB, Emerson Ovation, Honeywell DCS, Rockwell ICS Triplex, FOXBORO, Schneider PLC, GE Fanuc, Motorola, HIMA, TRICONEX, Prosoft etc. Various kinds of imported industrial parts

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Min HP and LP Lift Limiters The “Min HP Lift” limiter is used with only Admission or Extr/Adm applications to limit the HP valve’s minimum position above 0% to insure HP section cooling steam. This limiter is prevents the Ratio/Limiter from taking the HP valve fully closed. Unless specified by the turbine manufacture, this setting should be set to zero. The “Min HP Lift” limiter is only active if the following conditions are true: • Admission or Ext/Adm is programmed • Extr/Adm control is enabled • HP valve demand is above the Min HP Lift limiter The “Min LP Lift” limiter is used to limit the LP valve’s minimum position. This limiter is active at all times and prevents the Ratio/Limiter from taking the LP valve fully closed. However, during shutdown conditions the LP valve is taken fully closed. Unless specified by the turbine manufacture, this setting should be set to zero. Refer to Volume 2 of this manual for further information on Service mode and online tunables. All pertinent valve limiter parameters are available through the Modbus links. See Chapter 6 for a complete listing of Modbus parameters.

When an Emergency Shutdown condition occurs, both valve output signals are stepped to zero milliamps, the Shutdown relay de-energizes, and the shutdown cause (first shutdown condition sensed) is displayed on the 505E’s front panel. Pressing the scroll down key from this screen will reveal any additional shutdown conditions that were sensed. See Chapter 5 for a detailed list of the possible shutdown (Trip) conditions. Up to five Emergency Shutdown inputs (contact inputs) can be programmed to allow the 505E to indicate the cause of an emergency shutdown. By wiring trip conditions directly into the 505E, instead of a trip string, the 505E can pass a trip signal directly to its output relay (to trip the T&T valve), and also indicate the first trip condition sensed. All trip conditions are indicated through the 505E’s front panel and Modbus communications. The cause of the last trip can also be seen by pressing the ‘CONT’ key, then pressing the Scroll Down key until the Trip Status Screen is displayed. 

The last trip indication, is latched-in and can be viewed at any time after a trip and before the next trip condition is latched in. Once latched-in the last trip indication cannot be reset. This allows an operator to confirm what the trip condition was hours or days after the unit has been reset and restarted. In addition to the dedicated Shutdown relay, the other programmable relays may be configured as Shutdown condition or Trip relays. The Shutdown Condition relay may be programmed to indicate a shutdown condition on a remote panel or to a plant DCS. The Shutdown Indication relay is normally de-energized. This relay will energize upon any shutdown condition and stay energized until all trips have been cleared. The ‘Reset Clears Trip’ function has no effect on the programmable Shutdown Indication relay. When programmed as a Trip relay, the respective relay will function like the dedicated Shutdown relay (normally energized and de-energizes on a shutdown) to indicate the position of the dedicated Shutdown relay