Instruction manual
Table Of Contents
- Preface
- Safety Precautions
- Table of Contents
- Warnings, Cautions and Conformity
- Chapter 1 Drive Model Identification
- Chapter 2 Mounting and Wiring the Inverter
- Chapter 3 Operation using the Keypad
- Chapter 4 Function Codes / Parameters
- Chapter 5 Check Motor Rotation and Direction
- Chapter 6 Speed Reference Command Configuration
- Chapter 7 Operation Method Configuration (Run / Stop)
- Chapter 8 Motor and Application Specific Settings
- Chapter 9 Using PID Control for Constant Flow / Pressure Applications
- Chapter 10 Troubleshooting
- 10.1 Protective Functions
- 10.2 Before Proceeding with Troubleshooting
- 10.3 If Neither an Alarm Code Nor "Light Alarm" Indication Appears on the LED Monitor
- 10.4 If an Alarm Code Appears on the LED
- 10.5 If the “Light Alarm” Indication Appears on the LED Monitor
- 10.6 If an Abnormal Pattern Appears on the LED Monitor except Alarm Codes and "Light Alarm" Indication
- 10.7 If the Inverter is Running on Single-Phase Power
- Chapter 11 Specifications

10-2
Table 10.1 Abnormal States Detectable ("Alarm" and "Light Alarm" Objects)
Code
Name
"Alarm"
objects
"Light alarm"
objects
Remarks
Ref.
page
Instantaneous overcurrent
--
10-12
Ground fault
--
50 HP or above
10-12
Overvoltage
--
10-12
Undervoltage
--
10-13
Input phase loss
--
10-14
Output phase loss
--
10-14
Heat sink overheat
10-14
External alarm
10-15
Inverter internal overheat
10-15
Motor protection (PTC/NTC thermistor)
--
10-16
Braking resistor overheat
40 HP or below
10-16
Fuse blown
--
125 HP or above for
230 V series
150 HP or above for
460 V series
10-17
Charger circuit fault
--
60 HP or above for
230 V series
125 HP or above for
460 V series
10-17
to
Overload of motor 1 through 2
10-17
Inverter overload
--
10-18
Overspeed
--
10-18
PG wire break
--
10-19
Memory error
--
10-19
Keypad communications error
--
10-19
CPU error
--
10-20
Option communications error
10-20
Option error
10-20
Operation protection
--
10-20
Tuning error
--
10-21
RS-485 communications error (COM port 1)
RS-485 communications error (COM port 2)
10-21
Data saving error during undervoltage
--
10-22
Hardware error
--
60 HP or above for
230 V series
75 HP or above for
460 V series
10-22
Speed mismatch or excessive speed
deviation
10-22
NTC wire break error
--
10-23
Mock alarm
--
10-23
PID feedback wire break
10-24
Braking transistor broken
--
10-24
Positioning control
error
(Servo-lock)
--
10-24
(Synchronous control)
10-24
Enable circuit failure
--
10-24