11.6 Conclusion:
The point-to point signal wiring (hard wired arrangement) has limited information
about the field parameters to CCR. It requires additional wiring, input cards, relays
contacts and other compatible accessories to provide accurate diagnostics and
process data. In case of Profibus communication two wire simple loop based
wiring, flexibility of expansion, availability of more diagnostic information, reduced
installation and commissioning time, makes it superior than hard wiring.
For proper diagnostics with more information, the Profibus interface will be preferred
over hard wired signal arrangement and for Critical analog signals like weighing
system, Gas analyzers, Bag house DP, Flow, vibration etc. shall be on hardwire
signal arrangement.
S.N. Description UOM Qty. Unit Rate ( in Rs.)^Total
Amount
(in Rs.)
Total no. of VFD Nos. 44.00
1 Cable 14C x1.0sqmm for Digital I/O , @75mtr/drive Mtr 3300.00 79.00 260700.00
2 Cable 4P x1.0sqmm for Analog I/O ,@75mtr/drive Mtr 3300.00 77.00 254100.00
3 Cable Glands for 14C /4P Nos. 176.00 112.00 19712.00
TOTAL AMOUNT (A) 534512.00
I/O Hardware
4 TDriotal no. of DI cards ( @ 4 DI /ve) Nos. 11.00 10200.00 112200.00
5 Totaldrive) no. of DO cards (@3 DO/ Nos. 11.00 11600.00 127600.00
6 Total no. of AI cards ( @2 AI/ drive ) Nos. 11.00 27100.00 298100.00
7 Total no. of AO cards ( @1 AO/ drive) Nos. 6.00 39050.00 234300.00
TOTAL AMOUNT (B) 772200.00
TOTAL AMOUNT 1306712.00
PROFIBUS CASE
Total no. of VFD Nos. 44.00
1 Profibus DP Module Required ( average 1 Module/section) Nos. 6.00 70650.00 423900.00
2 Profibus Card at VFD end Nos. 44.00 10000.00 440000.00
3 Profibus DP Cables Mtr 1000.00 90.00 90000.00
4 Cable Glands for Profibus Cable Nos. 88.00 112.00 9856.00
5 Other Hardware for Networking Lot 1.00 50000.00 50000.00
TOTAL AMOUNT 1013756.00
Difference 292956.00