YASKAWA VARISPEED-626M/656MR5 series vector control frequency converter

YASKAWA VARISPEED-626M/656MR5 series vector control frequency converter

Document Fundamentals and Product Overview

Document positioning: Yaskawa VARISPEED-626M5656MR5 series user manual, mainly used for vector control inverters/converters with power regeneration function for machine tools, guiding installation, maintenance, troubleshooting, and specification inquiry.

Product model and specifications:

Product Type Model Voltage Level Power Range (kW) Power Range (HP) Remarks

Variable frequency drive (VS-626M5) CIMR-M5 200V level 3.7/2.2-37/30 5/3-50/40 including M5A (independent drive), M5N (NC system)

Variable frequency drive (VS-626M5) CIMR-M5 400V level 5.5/3.7-45/37 7.5/5-60/50 including M5A (independent drive), M5N (NC system)

Converter (VS-656MR5) CIMR-MR5 200V class 3.7/2.2-37/30 5/3-50/40, including MR5A (without 24V control power supply) and MR5N (with 24V control power supply)

Converter (VS-656MR5) CIMR-MR5 400V class 5.5/3.7-45/37 7.5/5-60/50 including MR5A (without 24V control power supply), MR5N (with 24V control power supply)

Warranty information:

Warranty period: 12 months after delivery to the customer or 18 months from the date of shipment from the Yaskawa factory, whichever comes first.

Warranty scope: Only covers faults caused by defects in Yaskawa craftsmanship or materials, excluding improper maintenance, modification, and use beyond specifications.

Regional restrictions: Warranty services are only free within Japan and require payment overseas.

Safety regulations and operating taboos

Definition of Security Level:

Warning: Potential hazardous situation that, if not avoided, may result in death or serious personal injury (such as opening the cover with electricity, not grounded).

CAUTION: Potential hazardous situation that, if not avoided, may result in minor/moderate personal injury or equipment damage (such as grabbing the front cover during transportation or installing on flammable materials).

Core security precautions:

Power off operation: Before wiring or disassembling the digital operator (JVOP-132), the power must be turned off and the capacitor must be discharged (refer to the warning label time, usually 5 minutes).

Grounding requirements: 200V level grounding resistance ≤ 100 Ω, 400V level grounding resistance ≤ 10 Ω. It is strictly prohibited to share the ground with welding machines and high current equipment.

Temperature control: The ambient temperature of the frequency converter/inverter should be ≤ 55 ℃ (131 ° F), and the inlet temperature of the heat sink should be ≤ 45 ℃ (113 ° F). A fan or cooling device should be installed.

Operation taboos:

Do not connect the power supply to the output terminals of the frequency converter (U/T1, V/T2, W/T3), otherwise it will damage the internal components.

Do not connect phase-shifting capacitors, LC/RC noise filters, or electromagnetic switches in the output circuit, as it may cause damage or overcurrent to the frequency converter.

Do not modify the product, otherwise the warranty will expire and may cause electric shock/injury.

Equipment installation and wiring

Delivery Confirmation (CAUTION):

Check if the model is consistent with the order (verify the nameplate), if there is no transportation damage to the appearance, if screws or other components are loose, and if damaged/missing equipment is not allowed to be installed.

Installation requirements:

Environment: Indoor, no corrosive/explosive gases, no dust/metal particles, avoid direct sunlight, vibration acceleration ≤ 2.5G (10-60Hz).

Installation material: It must be installed on non combustible materials such as metal.

Distance requirement (to ensure heat dissipation):

Equipment type, left and right spacing, up and down spacing, note

External heat dissipation type ≥ 120mm ≥ 120mm Side spacing ≥ 5mm

Open chassis type ≥ 150mm ≥ 150mm Side spacing ≥ 5mm

Wiring specifications:

Main circuit wiring: Use the specified wire diameter (such as 200V level frequency converter CIMR-M5A23P7, main circuit wire diameter ≥ 2mm ²), and the terminal screw torque meets the requirements (such as M5 screw 2.35N · m).

Control circuit wiring: Separate the control signal line from the power line, with a length of ≤ 20m, and use shielded twisted pair to avoid wiring in the same conduit.

Core functions and operations

Digital Operator (JVOP-132):

Function: Display operating status (motor speed U1-01, torque reference U1-04), set control constants, fault reset, single machine trial run.

Operation mode: Set from positions 1 to 37, with 11 being the digital operator operation mode, which can achieve jog (5% rated speed) and forward/reverse control.

Trial operation process:

Check the power supply voltage (200V level 3-phase 200-230V, 400V level 3-phase 400-460V).

(NC system) Set YENET1200 node address (rotary switch SW1).

Connect the control power supply and confirm that the frequency converter displays "-" and the inverter displays "- U".

Connect the main circuit power supply, the inverter display changes to "- b", and the CHARGE light is on.

Check the direction of the motor cooling fan (standard intake from the load side).

Send RUN signal to confirm the motor direction (counterclockwise when viewed from the load end during forward rotation) and no abnormal vibration/noise.

Directional control:

Encoder directional control:

Resolution: 360 °/4096=0.088 °, repeatability accuracy ± 0.2 °.

Applicable scenario: The load shaft is connected 1:1 to the motor shaft and requires a load shaft encoder (such as NE-1024-2MDF-068).

Magnetic sensor directional control:

Repetition accuracy ± 0.2 °, using magnet (MG-1378BS) and magnetic sensor (FS-1378C), detection range ± 15mm.

Troubleshooting and Maintenance

Common faults and solutions:

Fault code, fault type, cause, and handling measures

AL-01 inverter overcurrent output short circuit, ground fault check wiring, confirm no short circuit

AL-11 main circuit overvoltage input voltage is too high, load inertia is large. Check the power supply and adjust the acceleration time from C1 to 10

AL-20 winding switching fault switching was not completed within the specified time. Check the contactor wiring and confirm the C1-25 motor code

Maintenance cycle:

Daily inspection: motor abnormal noise, vibration, ambient temperature, display screen values.

Regular inspection:

Remarks on component replacement cycle

Cooling fan has accumulated 20000 hours of operation over 2-3 years

Filter capacitor for 5 years at an ambient temperature of 30 ℃

Motor bearings disassembled and inspected for wear after 12000 hours/2 years