5SHX2645L0004 3BHL000389P0104

Brand: ABB

Type:5SHX2645L0004 3BHL000389P0104

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 of our products are widely used in metallurgy, petroleum, glass, aluminum manufacturing, petrochemical industry, coal mine, papermaking, printing, textile printing and dyeing, mechanical, electronic manufacturing, automobile manufacturing, plastic machinery, electric power, water conservancy, water treatment/environmental protection, boiler heating, energy, power transmission and distribution and so on.

Tuning P & I Gains Proportional gain must be tuned to best respond to a system transient or step change. If system response is not known, a typical starting value is 5%. If proportional gain is set too high the control will appear to be overly sensitive, and may oscillate with a cycle time of less than 1 second. Integral gain must be tuned for best control at steady state. If system response is not known a typical starting value is 0.5%. If the integral gain is set too high the control may hunt or oscillate at cycles times of over 1 second. For best response the proportional gain and integral gain should be as high as possible. To obtain a faster transient response, slowly increase the proportional gain setting until the actuator or final driver output begins to oscillate or waver. Then adjust the integral gain as necessary to stabilize the output. If stability cannot be obtained with the integral gain adjustment, reduce the proportional gain setting. A well tuned system, when given a step change, should slightly overshoot the control point then come into control. A PID control loop’s gain is a combination of all the gains in the loop. The loop’s total gain includes actuator gain, valve gain, valve linkage gain, transducer gain, internal turbine gains, and the 505E’s adjustable gains. If the accumulated mechanical gain (actuators, valves, valve linkage, etc.) is very high, the 505E’s gain must be very low to be added to the system gain required for system stability.

In cases where a small change in the 505E’s output results in a large speed or load change (high mechanical gain) it may not be possible to take the 505E’s gains low enough to reach stable operation. In those cases the mechanical interface (actuator, linkage, servo, valve rack) design and/or calibration should be reviewed and changed to achieve a gain of one where 0-100% 505E output corresponds to 0-100% valve travel. Dual Dynamics (Speed/Load) The Speed PID has two sets of dynamics, On-Line and Off-Line; each include Proportional Gain, Integral Gain, and Derivative Ratio (SDR) variables. There are three cases that determine when the dynamics switch between On-Line and OffLine: ? A “Select On-Line Dynamics” contact input is programmed ? Unit is driving a generator ? Unit is driving a mechanical drive (not a generator) If a contact input is programmed to “Select On-Line Dynamics”, it has priority regardless of the driven device. When the contact is closed, On-Line dynamics are selected; when open, Off-Line dynamics are selected.