Our Team Expertly Repairs Yaskawa AC Inverter CIMR-H3 Series

Precision Zone specializes in Yaskawa product repairs servicing a wide range of AC inverters such as Yaskawa CIMR-H3 Series inverter.

Yaskawa’s CIMR-H3 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 CIMR-H3 SERIES INVERTER DRIVE

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 0.41 V for each phase
Multimeter Positive Lead L1 L2 L3
Multimeter Negative Lead Positive Side of the DC Buss
Diode Check Approximately 0.43 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 0.38 V for each phase
Multimeter Positive Lead Negative Side of the DC Buss
Multimeter Negative Lead U V W
Diode Check Approximately 0.37 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, Uv2 and Uv3 Undervoltage
OU Overvoltage
OL1 Overload on Motor
OL2 Overload on Inverter
RR Braking Transistor Failure
CPF Control Circuit
oH Heatsink Fins Overheat

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





Recently Repaired Products

Yaskawa CIMR-H3A23P7 image CIMR-H3A23P7 is an
Inverter-General Purpose manufactured by Yaskawa
Discovered issues: Passed Testing - Highly Recommend Recondition
Drive Type: AC Inverter
Series: H3
Specification: Japan Domestic standard
Input Voltage: 200V-230V
Output Power: 3.7kW

Yaskawa CIMR-H3A22P2 image CIMR-H3A22P2 is an
Inverter-General Purpose manufactured by Yaskawa
Discovered issues: Bad Capacitor(s), Bad Control Section/Board, Bad Cooling Fans, Bad Gate Section/Board, Bad Orientation/Encoder Section/Board, Bad Power Section/Board, Leaky Capacitors (Open, Corroded Traces)
Drive Type: AC Inverter
Series: H3
Specification: Japan Domestic standard
Input Voltage: 200V-230V
Output Power: 2.2kW

Yaskawa CIMR-H3V40P4 image CIMR-H3V40P4 is an
Inverter-General Purpose manufactured by Yaskawa
Discovered issues: Leaky Capacitors (Open, Corroded Traces), Bad Fuse, Bad Capacitor(s), Bad Cooling Fans, Bad Output Transistors/SCRs, Physical Damage to the Drive
Drive Type: AC Inverter
Series: H3
Specification: V
Input Voltage: 400V-460V
Output Power: 0.4kW

Yaskawa CIMR-H3V40P7 image CIMR-H3V40P7 is an
Inverter-General Purpose manufactured by Yaskawa
Discovered issues: Bad Capacitor(s), Bad Regen Section, Leaky Capacitors (Open, Corroded Traces), Physical Damage to the Drive, Bad Cooling Fans
Drive Type: AC Inverter
Series: H3
Specification: V
Input Voltage: 400V-460V
Output Power: 0.7kW

Yaskawa CIMR-H3V4018 image CIMR-H3V4018 is an
Inverter-General Purpose manufactured by Yaskawa
Discovered issues: Bad Circuit Board Component(s), Bad Control Section/Board, Bad Gate Section/Board, Leaky Capacitors (Open, Corroded Traces)
Drive Type: AC Inverter
Series: H3
Specification: V
Input Voltage: 400V-460V
Output Power: 18kW