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| pDrive CX Single - will this inverter run my 3 phase motor? |
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| raynerd:
b32 - Reactive current setting Setting Range: 0,1...1,0 x IN Default Setting: 0,58 x IN The parameter adjusts the reactive current (no-load current) of the motor in ampere. The right setting (especially at small motors, multi-motor operation, at motors with nominal power smaller than the inverter or at motors in 400V / 87Hz operation) improves the current display, the motor protection and the overload limitation. At small motors a wrong setting leads to an early trip caused by the internal motor protection function. In all honesty, I can read the words but it doesn`t really mean anything to me! So I presume this would be set to.... high? The problem I`m finding with most of these settings is knowing what to set the values to! Chris! |
| David Jupp:
It says that for small motors it will get confused if this isn't set correctly, motor protection may kick in and reduce speed. 0.58 IN translates as 0.58 x nominal current (should be on motor rating plate). NB I haven't gone back to check the full list of definitions in the manual - that might be a good idea in case they have some very specific meaning for IN. |
| raynerd:
Well I can see "1.82/1.05A" and "1.89-1.87/1.09-1.08A" written on my motor plate. I thought b2 setting allowed a value 0 - 1 but it doesn`t, it allows a range from 0 - 2.6. Also, it says 0.58 is default yet after a factory reset, 1.5 is the value of b32. Anyway, fairly irrelevent as I have tried lots of numbers within the range and I can exactly the same results! Squeeling motor with no speed control and freq of 16Hz. I`ve also swith the base frequency to 60Hz and could "hear" a change in the motor, but it was pretty much the same just a slightly different pich of squeeling. My hope is fading!! Chris |
| Swarfing:
Chris i'm wondering whether this may be a duel voltage motor where it would be 240v 'Y' and 120v delta? can you put up the make /model etc of the motor so we can do some surfing on it? |
| raynerd:
Hi Swarfing, Motor is: Siemens 3~ Mot 1LA7073-4AB10 All info on the plate: Siemens 3~ Mot 1LA7073-4AB10 UD 0805/71041082 Side 1 IP55 71M IM B3 50 HZ 230/400V (!triangle shape!)/Y 0.37kW 1.82/1.05A cos (phi) 0.78 1270/min 220-240/380-420V (!triangle shape!)/Y 1.89 -1.87 / 1.09-1.08 A 32142 6001 side 2 IEC/EN 60034 ThCL155(F) 60Hz 460V Y 0.43kW 1.02A cos (phi) 0.76 1670/min 440-480 V Y 1.08-1.09 A I hope that all makes sense!! Chris |
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