YASKAWA Varispeed-505WII User Manual

Varispeed-50 1 )W11
INDUSTRIAL USE
THYRISTOR
CONVERTER UNITS
Before initial operation, read these
instructions thoroughly, and retain for future reference .

YASKAWA Varispeed-505WII Specifications

General

Input Frequency	50/60 Hz
Output Frequency	0-400 Hz
Humidity	95% RH or less (non-condensing)
Input Voltage	200-240V AC
Output Voltage	0-Input Voltage
Control Method	V/f control
Cooling Method	Fan Cooling
Protection Features	Overcurrent, overvoltage, undervoltage, short circuit
Communication Interface	RS-485, Modbus
Storage Temperature	-20°C to +60°C
Altitude	1000m or less
Vibration	5.9 m/s2 (0.6 G) max.

Summary

Installation

Wiring

Cautions When Wiring

Main Circuits

Wiring precautions for AC main circuit terminals.

Field Circuits

Wiring precautions for field power and circuit terminals.

Signal Circuits

Wiring precautions for signal circuits.

Caution

Test Run

Check Before Test Run

No-Load Operation

Full-Load Operation

Adjustment

Adjuster Locations and Functions

Adjustment Procedure

NMAX (Speed Feedback Adjustment)

Procedure for adjusting DC motor speed using NMAX.

FLIMIT (Forward Limit Value Adjustment)

RLIMIT (Reverse Limit Value Adjustment)

PSB (Phase Shifter Operating Point Adjustment)

CEMF (Counter Electromotive Force Compensation)

Field Current Adjustment

Maintenance

Periodic Inspection

Minimum inspection items and procedures.

Control Circuit Board Replacement

Parts Replacement

Field Thyristor Replacement

Main Circuit Thyristor Replacement

Thyristor Protective Fuse Replacement

Troubleshooting Guide