S21260-SRS

Product Details

Product Description

Product Description
Brand: DANAHER
Type: S21260-SRS
Origin: the United States
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.
Driver Limits 20–160 mA Range 4–20 mA Range Overcurrent 217 mA 26 mA Under current 5 mA 0.6 mA Max Output Current Range 10-200 mA 2-24 mA Max Output Impedance 45 Ω 360 Ω Min Stop Adjust Range 10-80 mA 2-20 mA Max Stop Adjust Range 100-200 mA 10-24 mA Table 4-1. Actuator Driver Limits To ensure proper control to actuator resolution do not calibrate the span of the actuator output to less than a range of 100 mA (20–160 mA output) or 12 mA (4– 20 mA output). If necessary, the actuator to valve linkage may need to be adjusted to ensure proper 505E to valve resolution. Figure 4-8 graphically shows the steps available to stroke the actuators or valves. The stroking option is only available when the 505E control is in a shutdown state. The emergency shutdown input has to be closed or jumpered, as this input being open will shut off the current outputs of the 505E. After enabling the stroke mode, there are options available to adjust the minimum and maximum stops and to manually stroke the output(s). The manual adjustment mode can be used to stroke the actuators and valves from 0 to 100% after the minimum and maximum positions have been adjusted. This allows both the actuator and valve to be tested for binding, play, resolution, linearity, and repeatability. The actuator and valve positions can be varied by using the ADJ UP and DOWN keys or keying in the position desired and pressing the ENTER key. When the ENTER key is pressed, the actuator output will step to the entered position. As a safety precaution, if turbine speed ever exceeds 1000 rpm, the STROKE ACTUATORS mode will be automatically disabled, and actuator currents taken to zero. Calibration / Stroking Procedure WARNING Before calibrating or testing, the unit must be tripped and the steam supply removed.
This is to ensure that opening the control valve(s) will not allow steam into the turbine. Overspeed sensing and its relay are disabled during this process. Overspeeding the turbine may cause damage to turbine and can cause severe injury or death to personnel. STEAM TO THE TURBINE MUST BE SHUT OFF BY OTHER MEANS DURING THIS PROCESS. 1. The 505E’s Emergency shutdown contact input must be closed or jumpered throughout this procedure (or the 505E’s actuator current outputs will go to ZERO current). 2. Execute a system RESET command (Press the 505E “Reset” key). 3. Press the 505E’s front panel “Emergency Shutdown” button. 4. Press the ACT key then the SCROLL DOWN key until the “Stroke Actuators—Dsbld, Steam Must be Off” message appears. (Verify that the turbine’s steam supply has been shutoff before by an external Trip and Throttle valve.) 5. Press the “YES” key (This will cause the screen to display a “HP Valve to Min—Enabld, Min Curr Adjust * 20.000 message if the unit was programmed for 20–160 mA output).

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