Drives-AC Servo Yaskawa CACR-SR | Repairs Precision Zone

Our Team Expertly Repairs Yaskawa AC Servo Drive CACR-SR Series

Precision Zone specializes in Yaskawa product repairs servicing a wide range of AC Servo series such as Yaskawa CACR-SR Series Servopack.

Yaskawa AC Servo Drive CACR-SR Series has two different versions: BB is the base mounted and SB is the through hole mounted drives. (As an example, you might be looking at specific drives such as CACR-SR10BB1AF and CACR-SR10SB1AF)

All electrical components for both drives are identical, but mechanical design of them is completely different. The base mounted BB design has the drive directly mounted to the back panel. While the SB version has an opening in the back panel for mounting.

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 CACR-SR SERIES SERVOPACKS

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.

Input Modules Testing

Multimeter Positive Lead	Multimeter Negative Lead	Diode Check
Negative Capacitor Terminal	R S T	Approximately 0.3-0.4 V
R S T	Positive Capacitor Terminal	0 L Displayed

Output Modules Testing

Multimeter Positive Lead	Multimeter Negative Lead	Diode Check
Negative Capacitor Terminal	U V W	Approximately 0.3-0.4 V
U V W	Positive Capacitor Terminal	Approximately 0.3-0.4 V

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 servopack are displayed through a small seven segment LED display located on the control board. The 11 codes displayed are:

Alarm Code	Code Type	Cause
LED 1	OVER CURRENT	Motor or cables with low insulation to ground
LED 2	CIRCUIT PROTECTOR TRIPPED	Bad MCCB trips or faulty main circuit Thyristor-diode module
LED 3	REGENERATIVE TROUBLE	Defective regenerative transistor
LED 4	OVER VOLTAGE	Faulty regenerative circuitry or set too high
LED 5	OVER SPEED	Connection error
LED 6	VOLTAGE DROP	Defective main circuit or an issue with incoming voltage
LED 7	OVERLOAD	Rated load is more than 105% to 130%
LED A	HEAT SINK OVERHEAT	Fan stopped or motor circuit connection error
LED B	A/D ERROR OR CPU ERROR	Bad control circuit board or defective internal elements
LED F	OPEN PHASE	Poor connection to 3-phase input power supply
LED C	OVERRUN PREVENTION	Motor or optical encoder connection error

Recently Repaired Products

CACR-SR15SB1AF is an
Drives-AC Servo manufactured by Yaskawa
Discovered issues: Excessive Dirt/Debris
Drive Type: CACR AC Servo Drive
Control Type: Speed Control
Max Motor Capacity: 1.5kW
Mount Type: Through-hole mounting
Design Revision Order: B
Input Form: 200V, Analog
Encoder: 6000 pulses/rev
Applicable Motor Series: F Series
Modification Code: None

CACR-SR10SB1BF-Y100 is an
Drives-AC Servo manufactured by Yaskawa
Discovered issues: Bad Capacitor(s), Bad Power Section/Board, Excessive Dirt/Debris, Leaky Capacitors (Open, Corroded Traces), No Display
Drive Type: CACR AC Servo Drive
Control Type: Speed Control
Max Motor Capacity: 1.0kW
Mount Type: Through-hole mounting
Design Revision Order: B
Input Form: 200V, Analog
Encoder: 5000 pulses/rev
Applicable Motor Series: F Series
Modification Code: Y100

CACR-SR20SB1AF-Y118 is an
Drives-AC Servo manufactured by Yaskawa
Discovered issues: Bad Capacitor(s), Bad Output Transistors/SCRs, Bad Power Section/Board, Excessive Dirt/Debris, Leaky Capacitors (Open, Corroded Traces)
Drive Type: CACR AC Servo Drive
Control Type: Speed Control
Max Motor Capacity: 2.0kW
Mount Type: Through-hole mounting
Design Revision Order: B
Input Form: 200V, Analog
Encoder: 6000 pulses/rev
Applicable Motor Series: F Series
Modification Code: Y118

CACR-SR15BB1AM is an
Drives-AC Servo manufactured by Yaskawa
Discovered issues: Bad Capacitor(s), Bad Control Section/Board, Bad Power Section/Board, Excessive Dirt/Debris, Leaky Capacitors (Open, Corroded Traces)
Drive Type: CACR AC Servo Drive
Control Type: Speed Control
Rated Output Capacity: 1.5kW
Mount Type: Base Mounted
Design Revision Order: B
Input Form: 200V, Analog
Encoder: 6000 pulses/rev
Applicable Motor Series: M Series
Modification: None

CACR-SR10BB1BF-H is an
Drives-AC Servo manufactured by Yaskawa
Discovered issues: Bad Capacitor(s), Bad Power Section/Board, Leaky Capacitors (Open, Corroded Traces)
Drive Type: CACR AC Servo Drive
Control Type: Speed Control
Rated Output Capacity: 1.0kW
Mount Type: Base Mounted
Design Revision Order: B
Input Form: 200V, Analog
Encoder: 5000 pulses/rev
Applicable Motor Series: F Series
Modification: Hurco

CACR-SR20SB1AF is an
Drives-AC Servo manufactured by Yaskawa
Discovered issues: Bad Capacitor(s), Bad Control Section/Board, Bad Fuse, Bad Gate Section/Board, Bad Input Diodes/SCRs, Bad Output Transistors/SCRs, Bad Power Section/Board, Blown Input Power Components, Leaky Capacitors (Open, Corroded Traces)
Drive Type: CACR AC Servo Drive
Control Type: Speed Control
Max Motor Capacity: 2.0kW
Mount Type: Through-hole mounting
Design Revision Order: B
Input Form: 200V, Analog
Encoder: 6000 pulses/rev
Applicable Motor Series: F Series
Modification Code: None

CACR-SR20BB1AM is an
Drives-AC Servo manufactured by Yaskawa
Discovered issues: Bad Capacitor(s), Bad Cooling Fans, Bad Power Section/Board, Excessive Dirt/Debris, Leaky Capacitors (Open, Corroded Traces)
Drive Type: CACR AC Servo Drive
Control Type: Speed Control
Rated Output Capacity: 2.0kW
Mount Type: Base Mounted
Design Revision Order: B
Input Form: 200V, Analog
Encoder: 6000 pulses/rev
Applicable Motor Series: M Series
Modification: None

CACR-SR20SB1AF-Y100 is an
Drives-AC Servo manufactured by Yaskawa
Discovered issues: Bad Capacitor(s), Bad Power Section/Board, Excessive Dirt/Debris, Leaky Capacitors (Open, Corroded Traces)
Drive Type: CACR AC Servo Drive
Control Type: Speed Control
Max Motor Capacity: 2.0kW
Mount Type: Through-hole mounting
Design Revision Order: B
Input Form: 200V, Analog
Encoder: 6000 pulses/rev
Applicable Motor Series: F Series
Modification Code: Y100

CACR-SR20SB1BF is an
Drives-AC Servo manufactured by Yaskawa
Discovered issues: Bad Capacitor(s), Bad Power Section/Board, Excessive Dirt/Debris, Leaky Capacitors (Open, Corroded Traces), Physical Damage to the Drive
Drive Type: CACR AC Servo Drive
Control Type: Speed Control
Max Motor Capacity: 2.0kW
Mount Type: Through-hole mounting
Design Revision Order: B
Input Form: 200V, Analog
Encoder: 5000 pulses/rev
Applicable Motor Series: F Series
Modification Code: None

CACR-SR15SB1AF-Y100 is an
Drives-AC Servo manufactured by Yaskawa
Discovered issues: Bad Capacitor(s), Bad Power Section/Board, Excessive Dirt/Debris, Leaky Capacitors (Open, Corroded Traces), No Display
Drive Type: CACR AC Servo Drive
Control Type: Speed Control
Max Motor Capacity: 1.5kW
Mount Type: Through-hole mounting
Design Revision Order: B
Input Form: 200V, Analog
Encoder: 6000 pulses/rev
Applicable Motor Series: F Series
Modification Code: Y100

CACR-SR30SB1AS-Y124 is an
Drives-AC Servo manufactured by Yaskawa
Discovered issues: Bad Capacitor(s), Bad Power Section/Board, Excessive Dirt/Debris, Leaky Capacitors (Open, Corroded Traces), Physical Damage to the Drive
Drive Type: CACR AC Servo Drive
Control Type: Speed Control
Max Motor Capacity: 3.0kW
Mount Type: Through-hole mounting
Design Revision Order: B
Input Form: 200V, Analog
Encoder: 6000 pulses/rev
Applicable Motor Series: S Series
Modification Code: -Y124

CACR-SR30SB1AF is an
Drives-AC Servo manufactured by Yaskawa
Discovered issues: Bad Capacitor(s), Bad Power Section/Board, Excessive Dirt/Debris
Drive Type: CACR AC Servo Drive
Control Type: Speed Control
Max Motor Capacity: 3.0kW
Mount Type: Through-hole mounting
Design Revision Order: B
Input Form: 200V, Analog
Encoder: 6000 pulses/rev
Applicable Motor Series: F Series
Modification Code: None

CACR-SR20SB1BF-Y100 is an
Drives-AC Servo manufactured by Yaskawa
Discovered issues: Bad Capacitor(s), Bad Gate Section/Board, Bad Power Section/Board, Excessive Dirt/Debris, Leaky Capacitors (Open, Corroded Traces)
Drive Type: CACR AC Servo Drive
Control Type: Speed Control
Max Motor Capacity: 2.0kW
Mount Type: Through-hole mounting
Design Revision Order: B
Input Form: 200V, Analog
Encoder: 5000 pulses/rev
Applicable Motor Series: F Series
Modification Code: Y100

CACR-SR03BB1ES is an
Drives-AC Servo manufactured by Yaskawa
Discovered issues: Bad Capacitor(s), Bad Output Transistors/SCRs, Bad Power Section/Board, Leaky Capacitors (Open, Corroded Traces)
Drive Type: CACR AC Servo Drive
Control Type: Speed Control
Rated Output Capacity: 0.3kW
Mount Type: Base Mounted
Design Revision Order: B
Input Form: 200V, Analog
Encoder: 1500 pulses/rev
Applicable Motor Series: S Series
Modification: None

CACR-SR30BB1AM is an
Drives-AC Servo manufactured by Yaskawa
Discovered issues: Bad Capacitor(s)
Drive Type: CACR AC Servo Drive
Control Type: Speed Control
Rated Output Capacity: 3.0kW
Mount Type: Base Mounted
Design Revision Order: B
Input Form: 200V, Analog
Encoder: 6000 pulses/rev
Applicable Motor Series: M Series
Modification: None

CACR-SR20SB1BF-Y45 is an
Drives-AC Servo manufactured by Yaskawa
Discovered issues: Bad Capacitor(s), Bad Output Transistors/SCRs, Bad Power Section/Board, Excessive Dirt/Debris, Leaky Capacitors (Open, Corroded Traces)
Drive Type: CACR AC Servo Drive
Control Type: Speed Control
Max Motor Capacity: 2.0kW
Mount Type: Through-hole mounting
Design Revision Order: B
Input Form: 200V, Analog
Encoder: 5000 pulses/rev
Applicable Motor Series: F Series
Modification Code: Y45

CACR-SR10SB1AF-Y100 is an
Drives-AC Servo manufactured by Yaskawa
Discovered issues: Bad Capacitor(s), Bad Power Section/Board, Excessive Dirt/Debris
Drive Type: CACR AC Servo Drive
Control Type: Speed Control
Max Motor Capacity: 1.0kW
Mount Type: Through-hole mounting
Design Revision Order: B
Input Form: 200V, Analog
Encoder: 6000 pulses/rev
Applicable Motor Series: F Series
Modification Code: Y100

CACR-SR30SB1BS-Y124 is an
Drives-AC Servo manufactured by Yaskawa
Discovered issues: Bad Capacitor(s), Bad DCCT, Bad Gate Section/Board, Bad Output Transistors/SCRs, Bad Power Section/Board, Excessive Dirt/Debris, Leaky Capacitors (Open, Corroded Traces)
Drive Type: CACR AC Servo Drive
Control Type: Speed Control
Max Motor Capacity: 3.0kW
Mount Type: Through-hole mounting
Design Revision Order: B
Input Form: 200V, Analog
Encoder: 5000 pulses/rev
Applicable Motor Series: S Series
Modification Code: -Y124

CACR-SR05SB1AF-Y187 is an
Drives-AC Servo manufactured by Yaskawa
Discovered issues: Bad Capacitor(s), Bad Circuit Board Component(s), Bad Control Section/Board, Bad Power Section/Board, Excessive Dirt/Debris
Drive Type: CACR AC Servo Drive
Control Type: Speed Control
Max Motor Capacity: 0.5kW
Mount Type: Through-hole mounting
Design Revision Order: B
Input Form: 200V, Analog
Encoder: 6000 pulses/rev
Applicable Motor Series: F Series
Modification Code: Y187

CACR-SR07BB1AM is an
Drives-AC Servo 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, Bad Power Section/Board, Excessive Dirt/Debris
Drive Type: CACR AC Servo Drive
Control Type: Speed Control
Rated Output Capacity: 0.7kW
Mount Type: Base Mounted
Design Revision Order: B
Input Form: 200V, Analog
Encoder: 6000 pulses/rev
Applicable Motor Series: M Series
Modification: None

CACR-SR10BB1BF is an
Drives-AC Servo manufactured by Yaskawa
Discovered issues: Bad Control Section/Board
Drive Type: CACR AC Servo Drive
Control Type: Speed Control
Rated Output Capacity: 1.0kW
Mount Type: Base Mounted
Design Revision Order: B
Input Form: 200V, Analog
Encoder: 5000 pulses/rev
Applicable Motor Series: F Series
Modification: None

CACR-SR10BB1AF is an
Drives-AC Servo manufactured by Yaskawa
Discovered issues: Bad Capacitor(s), Bad Control Section/Board, Bad Output Transistors/SCRs, Leaky Capacitors (Open, Corroded Traces), Physical Damage to the Drive
Drive Type: CACR AC Servo Drive
Control Type: Speed Control
Rated Output Capacity: 1.0kW
Mount Type: Base Mounted
Design Revision Order: B
Input Form: 200V, Analog
Encoder: 6000 pulses/rev
Applicable Motor Series: F Series
Modification: None

CACR-SR03SB1AF-Y187 is an
Drives-AC Servo manufactured by Yaskawa
Discovered issues: Bad Capacitor(s), Bad Circuit Board Component(s), Bad Control Section/Board, Bad Power Section/Board, Excessive Dirt/Debris
Drive Type: CACR AC Servo Drive
Control Type: Speed Control
Max Motor Capacity: 0.3kW
Mount Type: Through-hole mounting
Design Revision Order: B
Input Form: 200V, Analog
Encoder: 6000 pulses/rev
Applicable Motor Series: F Series
Modification Code: Y187

CACR-SR44SB1AF-Y307 is an
Drives-AC Servo manufactured by Yaskawa
Discovered issues: Bad Capacitor(s), Excessive Dirt/Debris, Leaky Capacitors (Open, Corroded Traces)
Drive Type: CACR AC Servo Drive
Control Type: Speed Control
Max Motor Capacity: 4.4kW
Mount Type: Through-hole mounting
Design Revision Order: B
Input Form: 200V, Analog
Encoder: 6000 pulses/rev
Applicable Motor Series: F Series
Modification Code: Y307