powerflex - PLC Programming & Automation

PowerFlex 525 F059 Safety Open: Reading S1, S2 and the Protective Jumper

PowerFlex 525 control I/O safety terminals drawn two ways: on the left S+, S1 and S2 bridged by the factory protective jumper on a drive with no safety function assigned, on the right the jumper removed and two separate safety relay outputs landed on S1 and S2

F059 Safety Open means both PowerFlex 525 safety inputs are unpowered. Read S1, S2 and S+, tell F059 from F111, and know when the jumper must come out.

Gapping Cartons Before a Scanner: Speed Ratio, Gap Length and the Eye That Measures It

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Side view of zone 12 at 0.280 m/s, the metering belt at 0.513 m/s and the scanner belt, two 300 mm totes nose to tail before the step and 250 mm apart after it, the gap eye PE_G 2 m past the step, and the gap arithmetic for three product lengths

A 300 mm tote leaving zone 12 at 0.280 m/s onto a metering belt running 0.513 m/s arrives at the scanner 250 mm behind the tote that left in front of it, and a 600 mm carton on the same two belts arrives 499 mm behind its neighbour. Neither number has a timer in it: … Read more

Accel and Decel Times on a Conveyor PowerFlex 525: The Parameters That Stop F005 on Stop

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plc programming powerflex 525 decel time f005 overvoltage on stop 1 plc

The takeaway conveyor’s 25B-D010N104, a 480 V PowerFlex 525 on a 4 kW motor, ran all day and tripped F005 OverVoltage on the first stop of every shift, with the PowerFlex 525 decel time at 2.00 s, b005 [DC Bus Voltage] sitting at 812 V in the fault history, and a belt carrying forty cartons … Read more

Commanding a PowerFlex 525 from a ControlLogix: The Command Word, the Reference and the Status Bits

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Bit 0 of the PowerFlex 525 logic command word is Normal Stop, and it has to be sitting at 0 before bit 1 will ever start the drive. That footnote under the table in Appendix D of 520COM-UM001 is behind most of the drives that show a green connection in the I/O tree and still … Read more

PowerFlex 525 F004 UnderVoltage: Brownouts, Bus Volts and What to Check

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Trace of a 200 HP compressor starting across the line on the same transformer: the 480 V line sags to 390 V for 1.2 seconds, the idle drives' DC bus follows it down and holds near 550 V while the loaded drives' bus falls from 648 V into the drive's low voltage band and faults F004 at 0.4 seconds

Several drives faulting F004 in the same second is a supply problem. How to work out the bus volts, log the sag safely, and read the trace it gives you.

PowerFlex 525 F013 Ground Fault: Finding It Without Guessing

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Insulation resistance of the washdown pump measured twice on the same leads: 0.4 megohm at 06:00 cold and damp before the first start, 60 megohm at 08:00 after two hours of running, against the 5 megohm IEEE 43 floor, with a panel listing what each combination of readings points at

F013 is current leaving the motor circuit for earth. A megger routine that separates motor, cable and junction box, with the readings that decide it.

PLC Motor Control VFD Setup: DOL, PowerFlex 525, G120

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Ladder rung: Start in parallel with the Run_Cmd seal-in contact, in series with a normally closed Stop and a Drive_Ready contact, driving the Run_Cmd output

Choose DOL or a drive, wire the stop so it works without the PLC, set the drive parameters and tags, then read the fault codes when it trips.

PLC Conveyor Control: Zone Logic, Jams and PowerFlex

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Ladder rung for a conveyor zone: the line running bit, the zone photo-eye blocked, the downstream photo-eye clear and no jam latched, driving the zone run request

Zone accumulation, cascade start and stop, jam timers that do not nuisance trip, and driving a PowerFlex 525 over EtherNet/IP from a CompactLogix.

How to add PowerFlex AC Drive to Studio 5000 Project

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Allen Bradley Power Flex AC Driver Allen Bradley Power Flex AC drives can communicate with the desired communication protocol by installing Ethernet/IP, ControlNet, and DeviceNet modules. In the main chassis, we will continue with the article where Control Logix PLC is located and we added an ethernet module in our previous article. New Module Add … Read more