Our Team Expertly Repairs Magnetek AC Inverter GPD503 Series

Precision Zone specializes in Magnetek product repairs servicing a wide range of AC inverters such as Magnetek GPD503 Series inverter.

Magnetek’s GPD503 inverter is a tough, effective and adaptable inverter that is software based which offers flexibility to every machine application. A broad function selection allows rapid and significant changes in machine’s performance.

When assessing the functionality of a drive, our engineering team typically conducts a four-step check:

  • Visual Overview Check
  • Static Test
  • Checks Under Power
  • Alarm Codes Verification

This overview is Precision Zone’s basic troubleshooting process. Once our repair team starts on the job we use specialized, customized test fixtures, Huntron tracker, signal generator, oscilloscope, milli and mega ohm meters and other necessary tools to assure quality repair. Most importantly, every repair is fully tested in custom-built simulators under load to replicate real-life working environment. Precision Zone goes as far as using heat chamber and overnight dynamic testing to guarantee performance of the repaired product when it comes back to the customer.

REPAIR PROCESS FOR GPD503 SERIES INVERTER

Visual Overview Check

When conducting a visual check, the technician inspects the drive for any mechanical damage to the drive and print circuit boards. Then the team proceeds to verify connections are tight and correct inside the drive and there are no loose screws, wires or particles. Additionally, we look for any burn marks anywhere on the components or chassis. During the visual inspection technical team notes excessive dirt on cooling components and records clogged heatsink.

Static Test Basic

Precision Zone repair technicians use digital multimeter with diode testing capabilities and resistance measurement to conduct a static test. In the instance of Diode testing, our team is looking to check input and output modules.

Using your digital multimeter check the DC buss and make sure the DC buss has been discharged.

Input Modules Testing

Multimeter Positive Lead Negative Side of the DC Bus
Multimeter Negative Lead L1 L2 L3
Diode Check Approximately 0.2-1.0 V for each phase
Multimeter Positive Lead L1 L2 L3
Multimeter Negative Lead Positive Side of the DC Buss
Diode Check Approximately 0.2-1.0 V for each phase

Output Modules Testing

Multimeter Positive Lead U V W
Multimeter Negative Lead Positive Side of the DC Buss
Diode Check Approximately 0.2-1.0 V for each phase
Multimeter Positive Lead Negative Side of the DC Buss
Multimeter Negative Lead U V W
Diode Check Approximately 0.2-1.0 V for each phase

We verify capacitor value using capacitor meter and examine functionality of circuit breakers and contactors in the drive.

Alarm Codes Troubleshooting

The alarms on the drive are displayed through digital operator located on the front of the inverter. The codes displayed are:

Alarm Code Code Type
Uv1, 2 and 3 Undervoltage
OV Overvoltage
GF Ground Fault
ol1, 2, and 3 Overload
rr Braking Transistor
CPF Control Circuit
oh1 and oh2 Overheat

The majority of these alarms can be triggered if there is a fault in the control circuit.





Recently Repaired Products

Magnetek GPD503-DS309 image GPD503-DS309 is an
Inverter-General Purpose manufactured by Magnetek
Discovered issues: Bad Regen Section, Bad Capacitor(s), Bad Circuit Board Component(s), Bad Cooling Fans, Leaky Capacitors (Open, Corroded Traces)
Drive Type: Magnetek AC Inverter
Series: 503/G3
Input Voltage & Output Power: 230V, 7.5kW

Magnetek GPD503-DS307 image GPD503-DS307 is an
Inverter-General Purpose manufactured by Magnetek
Discovered issues: Bad Regen Section, Bad Control Section/Board, May Require Board Replacement, Physical Damage to the Drive
Drive Type: Magnetek AC Inverter
Series: 503/G3
Input Voltage & Output Power: 230V, 3.7kW

Magnetek GPD503-DS315 image GPD503-DS315 is an
Inverter-General Purpose manufactured by Magnetek
Discovered issues: Passed Testing - Highly Recommend Recondition
Drive Type: Magnetek AC Inverter
Series: 503/G3
Input Voltage & Output Power: 460V, 3.7kW

Magnetek GPD503-DS308 image GPD503-DS308 is an
Inverter-General Purpose manufactured by Magnetek
Discovered issues: Bad Regen Section, Bad Capacitor(s), Bad Circuit Board Component(s), Bad Cooling Fans, Leaky Capacitors (Open, Corroded Traces)
Drive Type: Magnetek AC Inverter
Series: 503/G3
Input Voltage & Output Power: 230V, 5.5kW

Magnetek GPD503-DS317 image GPD503-DS317 is an
Inverter-General Purpose manufactured by Magnetek
Discovered issues: Bad Capacitor(s), Bad Control Section/Board, Bad Cooling Fans, Bad Fuse, Bad Gate Section/Board, Bad Output Transistors/SCRs, Leaky Capacitors (Open, Corroded Traces)
Drive Type: Magnetek AC Inverter
Series: 503/G3
Input Voltage & Output Power: 460V, 7.5kW

Magnetek GPD503-DS322 image GPD503-DS322 is an
Inverter-General Purpose manufactured by Magnetek
Discovered issues: Bad Capacitor(s), Bad Control Section/Board, Bad Cooling Fans, Bad Gate Section/Board, Bad Output Transistors/SCRs, Excessive Dirt/Debris, Leaky Capacitors (Open, Corroded Traces)
Drive Type: Magnetek AC Inverter
Series: 503/G3
Input Voltage & Output Power: 230V, 18kW

Magnetek GPD503-DS330 image GPD503-DS330 is an
Inverter-General Purpose manufactured by Magnetek
Discovered issues: Bad Capacitor(s), Bad Control Section/Board, Bad Cooling Fans, Bad Fuse, Bad Gate Section/Board, Bad Output Transistors/SCRs, Bad Power Section/Board, Excessive Dirt/Debris, Leaky Capacitors (Open, Corroded Traces)
Drive Type: Magnetek AC Inverter
Series: 503/G3
Input Voltage & Output Power: 460V, 22kW

Magnetek GPD503-DS350 image GPD503-DS350 is an
Inverter-General Purpose manufactured by Magnetek
Discovered issues: Bad Capacitor(s), Bad Circuit Board Component(s), Bad Control Section/Board, Bad Cooling Fans, Bad Gate Section/Board, Bad Power Section/Board, Excessive Dirt/Debris, Leaky Capacitors (Open, Corroded Traces)
Drive Type: Magnetek AC Inverter
Series: 503/G3
Input Voltage & Output Power: 460V, 37kW

Magnetek GPD503-DS311 image GPD503-DS311 is an
Inverter-General Purpose manufactured by Magnetek
Discovered issues: Bad Capacitor(s), Bad Cooling Fans, Bad Fuse, Bad Power Section/Board, Excessive Dirt/Debris, Leaky Capacitors (Open, Corroded Traces), Bad Control Section/Board, Leaky Capacitors (Open, Corroded Traces)
Drive Type: Magnetek AC Inverter
Series: 503/G3
Input Voltage & Output Power: 230V, 15kW

Magnetek GPD503-DS316 image GPD503-DS316 is an
Inverter-General Purpose manufactured by Magnetek
Discovered issues: Bad Brake Transistor (Regen), Bad Circuit Board Component(s), Bad Control Section/Board, Bad Regen Section, Bad Capacitor(s), Bad Gate Section/Board, Bad Power Section/Board, Leaky Capacitors (Open, Corroded Traces)
Drive Type: Magnetek AC Inverter
Series: 503/G3
Input Voltage & Output Power: 460V, 5.5kW