Hi,
There is a parameter on the HMI screen that reads Input Kw and is a live figure as far as I can see as it moves up and down.
Does this figure give the overall KW usage on the circuit ie can this figure can be used as your consumption figure or cost figure?
Any help is appreciated,
Thomas
Hi there,
I am trying to determine the actual Kw cost of a motor being run via a VFD.
Where is the best place to measure the values I and V as there is differnces on the incoming supply to the load side of the VFD?
Thanks in advance.
Thomas
Hi,
We are using a 4 * 50mm Olflex cable from a VFD via a Field switch Isolator to a HVAC Fan motor. The motor is running at 130amps Full Load Current.
We are experiencing very high temps at this field Isolator and I was wondering if anyone has come across this issue before with this cable...
Hello there,
Let me give a brief history of the issue:
Our HVAC runs at 900 pascals supply static pressure set-point and our supply fan maintains this just fine. At irregular intervals however we have a sudden dip in pressure of roughly 50 pa and the fan will ramp up to counteract and it will...
Hello,
Just curious as to the intervals of checks on belts are for different plants. We run HVAC units on belt systems 24/7 on motors on average of 75kw and we have an interval of 6 months. I'm beginning to suspect this is not ample as we are experiencing belt failures.
Kind regards,
Thomas
Hello All,
I have a three phase VFD driven delta motor running at 375volts at roughly 1,350 rpm and 45 hertz. The problem I have though is the current is running at 130amps while its full load is 131amps. Could I have a problem with motor burn-out with this high current. The motor and fan are...
Hey there,
i'm new to this forum but having found it through google it really seems that the people here know there stuff.
i'm a maint. tech and we had a problem with a motor. the 's' phase burnt out and caused the vfd to trip.this is the second time to happen in the space of a year.the first...
