Created Date: January 26,2016

Created by: DetroitSound

Set P6.10 and P6.11 to (Motor nameplate current / Drive current rating) * 100%. The default is 150% drive rated current which could lead to tripping on sustained overload.

E.g. if your motor nameplate is 2.4A and the 41P0 is rated 3.0 amps then

2.4/3 *100 = 0.8 * 100 = 80 for P6.10 and P6.11

Thank you. I would have gone with a 2HP motor and drive, as I recall one or the other was not available at the time, but I'm with 1 hp, like it or not...

I'll make those changes today...

Created Date: April 19,2016

Created by: cheme

I have a similar application to this running at work. What I did was setup a PID instruction using the desired motor amps as the set point and the drive frequency as the output. It has been working very well. It is setup on a blower application that has a varying amount of vapor load that often times requires more horsepower than is available so when that occurs, the speed is reduced to keep the motor at is FLA.

Created Date: August 18,2016

Created by: DetroitSound

First of all, the P6.10 and P6.11 resolved that problem. Now I have a problem that seems to occur - not every time, but most of the time. It happens too often, this system has to be reliably operable by "mechanically declined " people.

During shutdown, it trips with an OV (Over Voltage) fault, which locks the drives out until it is reset. Quick rehash of my equipment - each fan has a MTR-001-3BD18 Iron Horse motor; wiring is approximately 50 feet, 3 #12 THHN wires in 1/2 " EMT, then at the drive end they connect to LR-41P0 Line Reactors, then the line reactors are connected to the GS2-41P0 drives. The system operates at 480 volts 3 phase. It looks real pretty!

I have tried the following:

P1.00 Ramp to stop and coast to stop. It faults either way.

P1.02 Deceleration Time: I 've tried 30 to 360 seconds

P1.04 Decel S-Curve: I 've tried 0 (linear) and 1-7. 0 seems to be the worst and 7 seems to be the best, but it still trips out even on 7.

P6.04 (AVR) - I have tried all four choices

P6.05 (over voltage stall prevention) I have tried it enabled and disabled.

P6.06 (Auto Adjustable accel / decel) I have tried all four choices.

P6.07 (Over Torque detection mode) I have tried 00 and 01

P6.31 to P6.36 (fault record) all show 02 (over voltage).

Might anyone have suggestions? I programmed the Click PLC for future addition of a C More Micro Touch through a RS-485 link, then you could select speeds with that. Since I already have the output module wired to the GS2 and all I would have to do is change the programming in the Click, I am considering slowing it down by steps, give it time to stabilize at each step, take it down another notch, then shut it off after the 10% (6hz) step.

Created Date: August 18,2016

Created by: Mike Nash

Coast to stop should not in any way be allowing an OV trip. Are you sure the fan has come to a stop before the drive is told to start again? I would think with coast to stop (which turns off the output transistors) the only was to see an OV is if the AC line increased (unlikely) or if you were getting a run input again before the motor stopped. If that is the problem, you could prove it by disconnecting the start signal until the motor is stopped. Without DC Injection at start or speed search, starting into a moving fan is difficult at best.

Created Date: August 19,2016

Created by: DetroitSound

Coast to stop should not in any way be allowing an OV trip. Are you sure the fan has come to a stop before the drive is told to start again? I would think with coast to stop (which turns off the output transistors) the only was to see an OV is if the AC line increased (unlikely) or if you were getting a run input again before the motor stopped. If that is the problem, you could prove it by disconnecting the start signal until the motor is stopped. Without DC Injection at start or speed search, starting into a moving fan is difficult at best.

I would think so too, but this has proven not to be the case, it trips with an OV trip even if it is set to coast to stop. Once it is told to stop it won't be started again until the next day, if at all (depending on the weather). The line reactor is between the motor and the drive. The reactor does get hot in operation. It is approximately 175 ' from this location to the breaker panel where the 480v circuit originates and between 50-60 feet to the fans.

This is how I have it set up. The top cabinet has the disconnect, line fuses, reactors and control transformer. The lower cabinet has the drives, drive input fuses, the Click and its power supply, and of course, the switches and indicators. Actually, both cabinets get pretty warm in operation and I want to add cooling fans.

The fans are started early in the day and they remain on until near the end of the work day, or until the outside conditions are unfavorable to where we need to run the air conditioning or heat, so they are normally turned on and off only once during the day. Other than the trip at shutdown it works perfectly.

Running them at "coast to stop " brings them from full speed to full stop in about 45 seconds. I do not care how long it takes to stop, 10 seconds or 10 minutes, it's all good.

n102419