Yaskawa VARISPEED-626M5 frequency converter

Yaskawa VARISPEED-626M5 frequency converter

Product Overview

1. Core positioning and model

Product type: VARISPEED-626M5 frequency converter (vector control)+VS-656MR5 power regeneration converter, specializing in high-precision drive of industrial motors

Voltage level and power range:

Voltage level, power range, and motor compatibility

200V level 3.7kW-37kW (5HP-50HP) 50Hz/60Hz three-phase AC motor

400V class 5.5kW-45kW (7.5HP-60HP) 50Hz/60Hz three-phase AC motor

Core control features: sine wave PWM vector control, supporting speed/torque control, servo mode optional

2. Key performance parameters

Speed regulation performance: Speed regulation range from 40r/min to the maximum motor speed (up to 8000r/min), speed accuracy ≤ 0.2% (rated speed)

Overload capacity: 120% rated current/1 minute, 200% rated current/1 second (converter)

Control response: Soft start time adjustable from 0.1-180 seconds, fast torque response (optimized through proportional gain/integral time parameters)

Protection functions: 20+protections for overcurrent, overvoltage, undervoltage, overheating, motor overload, encoder failure, etc

Installation and wiring specifications

1. Installation requirements

Environmental conditions: temperature 0-55 ℃ (inlet temperature of heat sink ≤ 45 ℃), humidity 5% -95% (no condensation), altitude ≤ 1000m

Installation method: Vertical installation, cooling distance requirement:

External heat sink type: front and rear ≥ 120mm, left and right ≥ 5mm

Open chassis type: front and back ≥ 150mm, left and right ≥ 50mm

Protection level: IEC IP00, indoor installation (anti-corrosion gas, dust)

2. Core wiring specifications

Main circuit wiring:

Power side: MCCB (molded case circuit breaker) and AC reactor (harmonic suppression) must be connected in series

Output side: It is strictly prohibited to connect AC power supply or phase advance capacitor, with a wiring length of ≤ 20m

Grounding: Dedicated grounding terminal, independent grounding (not shared with high current equipment), grounding resistance ≤ 10 Ω (400V level)/≤ 100 Ω (200V level)

Control circuit wiring:

Signal types: analog (0 ± 10V speed command), digital (forward/reverse, emergency stop, etc.), encoder signal (RS-422A)

Wiring requirements: The distance from the main circuit should be ≥ 30cm, shielded twisted pair cables should be used, and the shielding layer should be grounded at one end

Operation and control functions

1. Operation mode and control mode

Operating modes: FWD (Forward Rotation), REV (Reverse Rotation), Jog (JOG, 5% rated speed), SV (Servo Mode), CHW (Winding Switching), Positioning Stop

Control method:

Control mode, signal type, core parameters

Analog control 0 ± 10V voltage signal input impedance 50k Ω, high resolution

Digital quantity control 12 bit BCD/binary supports 8 levels of internal speed settings (C1-41-C1-48)

The local control digital operator (JVOP-132) supports parameter modification, fault reset, and jog operation

2. Key operational procedures

Start up process: Control power supply → Main circuit power supply → Run command → Slowly increase speed command

Debugging steps:

Power on self-test (7-segment LED displays "- b" as ready)

Motor steering inspection (motor rotates counterclockwise under forward rotation command)

Speed response test (smoothness of acceleration/deceleration)

Protection function verification (overload, emergency stop test)

Parameter settings: The core parameters include rated speed (C1-26), speed proportional gain (C1-01), and soft start time (C1-10). Some parameter modifications require a power outage and restart to take effect

Maintenance and troubleshooting

1. Regular maintenance plan

Replacement cycle of vulnerable parts:

Remarks on component replacement cycle

Check the cooling fan after running for 20000 hours in 2-3 years

Smooth capacitor 5-year inspection for bulging and leakage

Electrolytic capacitor (control board) with a 5-year adjustment cycle based on ambient temperature

Motor bearings lubricated or replaced as needed after 12000 hours/2 years

Daily inspection: tightening of terminal screws, cleaning of heat sinks (blowing with compressed air), insulation of cables

2. Fault diagnosis system

Fault display: 7-segment LED alternately displays the fault occurrence number and fault code (such as "2-01" indicating that the second fault is overcurrent)

Common faults and solutions:

Fault code, fault name, handling measures

AL-C1 overcurrent inspection for motor short circuit, loose wiring, and load overload

AL-11 main circuit overvoltage check input voltage, regenerative braking circuit

AL-30 encoder signal disconnection inspection encoder wiring, shielding layer grounding

AL-42 motor thermistor disconnection check motor temperature and thermistor wiring

Fault record: The frequency converter can store 6 fault records, which can be viewed through the operator and need to be manually cleared

Application and adaptation scenarios

Typical applications: Machine tool spindle drive, industrial machinery transmission system

Adapt to peripheral devices:

Detection components: incremental encoder (RS-422A interface), magnetic sensor

Protective components: MCCB, magnetic contactor, AC reactor (model UZBA-B series)