Dear Members,
We are a Boiler manufacturer. We have supplied 2 Nos Low Tension motor - 415V; 50Hz 0f 110 Kw for fan application. Each fan is having full load capacity. The first fan is with VFD and the second is with star/delta starting and inlet regulating vane flow control. The boiler...
We are having a ABB make VFD - ACS800 for fan application. It was commissioned and working for last three months. Now it is not responding to DCS input (4-20ma) and increse/decrese 24 V DC input from VFD panel for any increse/decrease command. Any change made from these two destinations leads to...
Torque/Thrust calculation for Dampers/gates.
We want to calculate the Torque/Thrust required for opening/closing of the Damper/Gate.
The data available with us
1. area of the damper/gate in Sq.mm
2. Opeating pressure in mm water col. (g)
3. operating temperature in Deg. C
The damper is...
I would request the Forum Members to suggest the type of cables to be used for connecting following I/Os to DCS/PLC based on their experience.
1 Analog inputs 4-20mA (from transmitters & VFD feedbacks)
2 Analog inputs Thermocouples
3 Analog inputs RTDs
4 Analog outputs 4-20mA (to I/P...
Dear Sirs,
We are one of the leading package-cum-medium size boiler designer-cum-manufacturer. We are now looking for combustion technology, supply of furnace and associated systems, input data for design of pressure parts and boiler auxiliaries for the following :-
1) Empty fruit bunch (...
ONE 45 TONS/HR SPREADER STOKER FIRED BOILER HAD AN EXPLOSION WITH A BIG NOISE CAUSING FURNACE WATER WALL DAMAGE.
DETAILS ARE AS BELOW:
BOILER PARAMETERS 45 TONS/HOUR; 65 KG/CM2; 490 C
FUEL - EUCALYPTUS BARK.
TYPE – BALANCE DRAFT (-5mm) WITH TRAVELLING GRATE
AUTO CONTROLS – 3 ELEMENT FEED...
I require Standard (NEMA etc.)symbols (which can be used by copy and paste method) for prepation of elecrical circuits/Wiring diagrams, control schemes and logic diagrams.
Can any of you help me.
Thanks in anticipation
R.Thiyagarajan.
