BoxerBrats
Member
OK I started a thread on how to do analog outputs on a DirectSoft program to control a VFD driving a well pump.
The basics is we have 3 pumps the first is a 5 HP jockey pump comes on first.
If it can not handle the load then we bring on the second pump (60 HP) controlled by a VFD. When this comes on we drop out the jockey pump.
When it is running at 60 HRZ and still not handle the water demand then we bring on the 3rd pump (60 HP) wich is across the line start. At this time we ramp th e VFD down to 30 HTZ and increase/decrease speed to maintain the water demand.
Unill we reach the set point then remove the 3rd pump, and then the 2nd pump.
I have attached my program, with hopes of getting some input back. Since this is the first Analog program I have done, and trying to avoid any unexpected mistakes.
Thanks
The basics is we have 3 pumps the first is a 5 HP jockey pump comes on first.
If it can not handle the load then we bring on the second pump (60 HP) controlled by a VFD. When this comes on we drop out the jockey pump.
When it is running at 60 HRZ and still not handle the water demand then we bring on the 3rd pump (60 HP) wich is across the line start. At this time we ramp th e VFD down to 30 HTZ and increase/decrease speed to maintain the water demand.
Unill we reach the set point then remove the 3rd pump, and then the 2nd pump.
I have attached my program, with hopes of getting some input back. Since this is the first Analog program I have done, and trying to avoid any unexpected mistakes.
Thanks