Drives-AC Spindle Yaskawa CIMR-MTIII | Repairs Precision Zone

Our Team Expertly Repairs Yaskawa AC Spindle Drive CIMR-MTIII series

Precision Zone specializes in Yaskawa product repairs servicing a wide range of AC Spindle series such as Yaskawa CIMR-MTIII Series Spindle Drives.

Varispeed VS626 MTIII Drives are reliable adjustable speed A/C spindle motor drives. CIMR-MTIII drives combine a compact A/C spindle drive motor with a digital vector controlled, transistor inverter. There are five seven-segment leds that can display alarm information.

The CIMR-MTIII drives achieve high speed operation and heavy duty machining even while operating under adverse environmental conditions. The CIMR-MTIII is an ideal spindle drive for machining centers, lathes, and milling machines.

This series high-accuracy and quick response control even under adverse conditions, easy and flexible operation is available with excellent maintainability due to various display functions and protective functions.

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-MTIII SERIES SPINDLE 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.

First you must open up the drive and using your digital multimeter check the DC buss and make sure the DC buss has been discharged.

You are not able to check the inputs on this drive.

Output Modules Testing

Multimeter Positive Lead	U V W
Multimeter Negative Lead	Positive Side of the DC Buss
Diode Check	Approximately 0.33 V for each phase

Multimeter Positive Lead	Negative Side of the DC Buss
Multimeter Negative Lead	U V W
Diode Check	Approximately 0.32 V for each phase

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

The last step in a static test process is checking the Regen Resistor. The technicians measure the resistance between Y3 and Y4. Resistance output results will vary depending on the size of the drive, but should not be shorted.

Alarm Codes Troubleshooting

The alarms on the spindle drive are displayed through five seven-segment display located on the control board. The codes displayed are:

Alarm Code	Code Type
ICP ICAN ICA1 AD ADC CPF PGC	Control Board Failures
OHF	Controller Overheat
NCC	Circuit Breaker
10C	Overcurrent
dEV	Deviation
OL	Overload
OS	Overspeed
OV	Overvoltage
UV	Undervoltage
OH	Overheat
FU	Fuse

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

Recently Repaired Products

CIMR-MTIII-11K is an
Drives-AC Spindle manufactured by Yaskawa
Discovered issues: Bad Capacitor(s), Bad Circuit Board Component(s), Bad Cooling Fans, Bad Gate Section/Board, Bad Orientation/Encoder Section/Board, Excessive Dirt/Debris, Leaky Capacitors (Open, Corroded Traces), Multiple signs of previous repair, Bad Power Section/Board
Drive Type: Spindle Inverter
Series: VS-626MTIII
Max. Applicable Motor Output: 11kW
Option: with fan

CIMR-MTIII-15K.2 is an
Drives-AC Spindle manufactured by Yaskawa
Discovered issues: Bad Circuit Board Component(s), Bad Gate Section/Board, Physical Damage to the Circuit Board/s, Physical Damage to the Drive
Drive Type: Spindle Inverter
Series: VS-626MTIII
Max. Applicable Motor Output: 15kW
Option: .2 without fan

CIMR-MTIII-15K is an
Drives-AC Spindle manufactured by Yaskawa
Discovered issues: Bad Capacitor(s), Bad Circuit Board Component(s), Bad Cooling Fans, Bad Gate Section/Board, Bad Output Transistors/SCRs, Leaky Capacitors (Open, Corroded Traces), Missing parts/components, Multiple signs of previous repair
Drive Type: Spindle Inverter
Series: VS-626MTIII
Max. Applicable Motor Output: 15kW
Option: with fan

CIMR-MTIII-7.5K is an
Drives-AC Spindle manufactured by Yaskawa
Discovered issues: Bad Capacitor(s), Bad Circuit Board Component(s), Bad Cooling Fans, Bad Gate Section/Board, Bad Output Transistors/SCRs, Leaky Capacitors (Open, Corroded Traces)
Drive Type: Spindle Inverter
Series: VS-626MTIII
Max. Applicable Motor Output: 7.5kW
Option: with fan

CIMR-MTIII-30K is an
Drives-AC Spindle manufactured by Yaskawa
Discovered issues: Bad Brake Transistor (Regen)
Drive Type: Spindle Inverter
Series: VS-626MTIII
Max. Applicable Motor Output: 30kW
Option: with fan

CIMR-MTIII-3.7K is an
Drives-AC Spindle manufactured by Yaskawa
Discovered issues: Bad Capacitor(s), Bad Circuit Board Component(s), Bad Cooling Fans, Bad Gate Section/Board, Leaky Capacitors (Open, Corroded Traces)
Drive Type: Spindle Inverter
Series: VS-626MTIII
Max. Applicable Motor Output: 3.7kW
Option: with fan

CIMR-MTIII-11K.5 is an
Drives-AC Spindle manufactured by Yaskawa
Discovered issues: Bad Capacitor(s), Bad Circuit Board Component(s), Bad Cooling Fans, Excessive Dirt/Debris, Leaky Capacitors (Open, Corroded Traces)
Drive Type: Spindle Inverter
Series: VS-626MTIII
Max. Applicable Motor Output: 11kW
Option: .5

CIMR-MTIII-22K is an
Drives-AC Spindle manufactured by Yaskawa
Discovered issues: Bad Capacitor(s), Bad Cooling Fans, Bad DC Bus Capacitors, Bad Orientation/Encoder Section/Board, Leaky Capacitors (Open, Corroded Traces), Missing parts/components, Multiple signs of previous repair
Drive Type: Spindle Inverter
Series: VS-626MTIII
Max. Applicable Motor Output: 22kW
Option: with fan

CIMR-MTIII-7.5K.2 is an
Drives-AC Spindle manufactured by Yaskawa
Discovered issues: Bad Capacitor(s), Bad Circuit Board Component(s), Bad Control Section/Board, Bad Gate Section/Board, Bad Output Transistors/SCRs, Leaky Capacitors (Open, Corroded Traces)
Drive Type: Spindle Inverter
Series: VS-626MTIII
Max. Applicable Motor Output: 7.5kW
Option: .2 without fan

CIMR-MTIII-5.5K is an
Drives-AC Spindle manufactured by Yaskawa
Discovered issues: Bad Capacitor(s), Bad Cooling Fans, Bad Gate Section/Board, Leaky Capacitors (Open, Corroded Traces)
Drive Type: Spindle Inverter
Series: VS-626MTIII
Max. Applicable Motor Output: 5.5kW
Option: with fan

CIMR-MTIII-18.5K is an
Drives-AC Spindle manufactured by Yaskawa
Discovered issues: Bad Capacitor(s), Bad Circuit Board Component(s), Bad Cooling Fans, Bad Fuse, Bad Gate Section/Board, Leaky Capacitors (Open, Corroded Traces), Multiple signs of previous repair
Drive Type: Spindle Inverter
Series: VS-626MTIII
Max. Applicable Motor Output: 18.5kW
Option: with fan

CIMR-MTIII-11K.2 is an
Drives-AC Spindle manufactured by Yaskawa
Discovered issues: Bad Control Section/Board, Parameter/Setting Adjustment, Bad Capacitor(s), Passed Testing - Highly Recommend Recondition
Drive Type: Spindle Inverter
Series: VS-626MTIII
Max. Applicable Motor Output: 11kW
Option: .2 without fan

CIMR-MTIII-3.7K.2 is an
Drives-AC Spindle manufactured by Yaskawa
Drive Type: Spindle Inverter
Series: VS-626MTIII
Max. Applicable Motor Output: 3.7kW
Option: .2 without fan