Alarm Detection; Alarm Detection; Alarm Codes, Causes, And Possible Solutions - YASKAWA FSDrive-MV1000 Series Instructions For Use Manual

5.5 Alarm Detection

5.5

Alarm Detection

u Alarm Codes, Causes, and Possible Solutions
Alarms are drive protection functions that do not necessarily cause the drive to stop. After the cause of an alarm is
removed, the drive will return to the same status as before the alarm occurred.
When an alarm has been triggered, the ALM light on the digital operator display blinks and the alarm code display
flashes. If a contact output is set for an alarm (H2-
Digital Operator Display
BAT
Cause
The battery voltage has fallen to 2 V or lower.
Digital Operator Display
bb
Cause
An external baseblock signal has been input at
one of the contact input terminals 1 to 16.
Digital Operator Display
bUS
Cause
Communications wiring is faulty, there is a
short circuit, or something is not connected
properly.
The communication option is damaged.
The communication option is not properly
connected to the drive.
Communications data error occurred due to
electrical interference.
Digital Operator Display
CALL
Cause
Communications wiring is faulty, there is a
short circuit, or something is not connected
properly.
Programming error on the master side
Communications circuitry is damaged.
162
Table 5.14 Alarm Codes, Causes, and Possible Solutions
Battery Voltage Low
Low battery voltage has been detected.
Replace the battery.
Drive Baseblock (Voltage)
Drive output interrupted as indicated by an external baseblock signal.
Check the external circuit (contact inputs), and review the input timing of
baseblock signals.
Option Communication Error
After initial communication was established, the connection was lost.
Assign a Run command or frequency reference to the option card.
Check for faulty wiring.
Correct the wiring.
Check for disconnected cables and short circuits. Repair as needed.
If there are no problems with the wiring and the fault continues to occur,
replace the option.
• The connector pins on the option are not properly lined up with the
connector pins on the drive.
• Reinstall the option card.
• Check the various options available to minimize the effects of electrical
interference.
• Counteract electrical interference in the control circuit, main circuit, and
ground wiring.
• If the magnetic contactor is identified as a source of electrical
interference, install a surge protector to the MC coil.
• Use only recommended cables or other shielded line. Ground the shield
on the controller side or on the drive input power side.
• Separate all communication wiring from drive power lines. Install an
EMC noise filter to the drive input power supply.
Serial Communication Transmission Error
Communication has not yet been established.
• Check for wiring errors
• Correct the wiring
• Check for disconnected cables and short circuits. Repair as needed.
Check communications at start-up and correct programming errors.
• Perform an self-diagnostics check.
• If the problem continues, replace either the control board or the entire
drive. For instructions on replacing the control board, contact Yaskawa
or your nearest sales representative.
= 10), that output terminal will be triggered.
Minor Fault Name
Possible Solutions
Minor Fault Name
Possible Solutions
Minor Fault Name
Possible Solutions
Minor Fault Name
Possible Solutions
YASKAWA ELECTRIC TOEP C710687 02B FSDrive-MV1000 Instructions
Minor Fault Output
H2- =10
Yes
Minor Fault Output
H2- =10
No
Minor Fault Output
H2- =10
Yes
Minor Fault Output
H2- =10
Yes