YASKAWA Varispeed f7 User Manual

Protective and Diagnostic Functions
7-7
Digital Operator Communications
Error 1
Communications with the Digital
Operator were not established within 5
seconds after the power was turned
on.
The Digital Operator's connector isn't
connected properly.
Disconnect the Digital Operator
and then connect it again.
The Inverter's control circuits are
faulty.
Replace the Inverter.
CPU External RAM Fault
-
Try turning the power supply off
and on again.
The control circuits were destroyed. Replace the Inverter.
Digital Operator Communications
Error 2
After communications were estab-
lished, there was a communications
error with the Digital Operator for
more than 2 seconds.
The Digital Operator isn't connected
properly.
Disconnect the Digital Operator
and then connect it again.
The Inverter's control circuits are
faulty.
Replace the Inverter.
Baseblock Circuit Error
-
Try turning the power supply off
and on again.
The control circuit is damaged. Replace the Inverter.
EEPROM Error
-
Try turning the power supply off
and on again.
The control circuit is damaged. Replace the Inverter.
CPU Internal A/D Converter Error
-
Try turning the power supply off
and on again.
The control circuit is damaged. Replace the Inverter.
CPU External A/D Converter Error
-
Try turning the power supply off
and on again.
The control circuit is damaged. Replace the Inverter.
Option Board Connection Error
The option board is not connected
properly.
Turn off the power and insert the
board again.
The Inverter or option board is faulty.
Replace the option board or the
Inverter.
ASIC Internal RAM Fault
-
Try turning the power supply off
and on again.
The control circuit is damaged. Replace the Inverter.
Watchdog Timer Fault
-
Try turning the power supply off
and on again.
The control circuit is damaged. Replace the Inverter.
CPU-ASIC Mutual Diagnosis Fault
-
Try turning the power supply off
and on again.
The control circuit is damaged. Replace the Inverter.
ASIC Version Fault The Inverter control circuit is faulty Replace the Inverter.
Communications Option Board A/
D Converter Error
The option board is not connected
properly.
Turn off the power and insert the
board again.
The option board's A/D converter is
faulty.
Replace the Communications
Option Board.
Table 7.1 Fault Displays and Processing (Continued)
Display Meaning Probable Causes Corrective Actions

YASKAWA Varispeed f7 Specifications

General

Brand	YASKAWA
Model	Varispeed f7
Category	Inverter
Language	English