II. Fan system application Vibration/Temperatue monitoring type K6CM Target Application Ventilation fan Ventilation fans in odorous gas treatment facilities Activated carbon absorption tower Purified air Facility details Ventilation fans in odorous gas treatment facilities Purifies air before releasing it outside by removing odorous components using activated carbon. Absorption to activated carbon Fan system Motor operation conditions 22kW/400V Mist removal Driving the motor by direct connection to commercial power supply:
50Hz Low-concentration odorous gas Failure mode Deterioration over time Detection parameters Acceleration/Verlocity Acceleration/Velocity measurement results obtained from K6CM-VBM 10 (G) Warning Abnormal Threshold critical Threshold warning 10.00 1.54G 1.00 0.37G 0.10 Shaft diameter 48mm × 1500rpm ≈ 7.2 × 104 0.01 0 2 4 6 8 10 12 14 16 18 20 Shaft diameter D [mm] X Rotation speed N [rpm] ×104 Large-sized machines:Large-sized machines:
vibR ram tis ov na l vu ee l oo cf ity S mm lo ea tl sl o s-s r ti z w he ad it n hm 1 a o 5c uh kti pn We us t /M m oed fo i 1tu o 5m r k- ws Wiz ie t thd o m o 7ua 5c t h p ki u Wn te / m a a hc eh ain vye fi on ust na dll ae td io o nn m oa nc ah i fn oe u nin ds at ta il ole nd Judgement with high rigidity. with soft rigidity. A 0.71mm/s A A A 1.12mm/s B Normal 1.80mm/s B 2.80mm/s C B 4.50mm/s Threshol Cd warning B 7.10mm/s C Threshold warning 11.20mm/s D C Warning 18.00mm/s D D D Abnormal Rmsvalue of Small-sized machines / Medium-sized machine / Large-sized machines: machine installed on Large-sized machines:
machine installed Threshold for this application (examples) vibration velocity m lo et so sr t w hait nh 1 o 5u ktp Wut m ofo 1to 5r k w Wit th o o 7u 5t p ku Wt a w h ie ta hv hy i gfo hu rn igd ia dt ii to yn . won it ha sfo ou ftn rd iga it dio itn y . Judgement A 0.71mm/s A A A Example of Acceleration alarm threshold 1.12mm/s B Normal 1.80mm/s B Alarm threshold (Warning) 0.37G 2 4. .8 50 0m mm m/ /s s C Threshol Cd warning B B 7.10mm/s C Threshold warning Alarm threshold (Critical) 1.54G 11.20mm/s D C Warning 18.00mm/s D D D Abnormal Example of Verocity alarm threshold Expected implementation effects Alarm threshold (Warning) 2.8mm/s Enables remote detection of motor failure.
Detects degradation of bearings so users can replace them before Alarm threshold (Critical) 7.1mm/s they lock up. vibration velocity m lo et so sr t w hait nh 1 o 5u ktp Wut m ofo 1to 5r k w Wit th o o 7u 5t p ku Wt a heavy foundation on a foundation Judgement with high rigidity. with soft rigidity. A 0.71mm/s A A A 1.12mm/s B Normal 1.80mm/s B 2.80mm/s C B 4.50mm/s Threshol Cd warning B 7.10mm/s C Threshold warning 11.20mm/s D C Warning 18.00mm/s D D D Abnormal vibration velocity motor with output less than 15 kW motor with output of 15 kW to 75 kW a heavy foundation with high rigidity. on a foundation with soft rigidity.
Judgement A A A A Normal 0.71mm/s B 1.12mm/s B 1.80mm/s C B 2.80mm/s Threshold warning C B 4.50mm/s D C 7.10mm/s Threshold warning D C Warning 11.20mm/s D 18.00mm/s D Abnormal 10.00 1.00 0.10 0.01 0 2 4 6 8 10 12 14 16 18 20 Alarm threshold (Warning) 0.37G Alarm threshold (Critical) 1.54G Alarm threshold (Warning) 2.8mm/s Alarm threshold (Critical) 7.1mm/s