YASKAWA FSDrive-MV1000 - Alarm Detection

130 YASKAWA ELECTRIC EZZ010928 FSDrive-MV1000 Instructions
5.5 Alarm Detection
5.5 Alarm Detection
◆ Alarm Codes, Causes, and Possible Solutions
Alarms are drive protection functions that do not necessarily cause the drive to stop. Once 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 sequence output is set for an alarm (H2- = 10), that output terminal will be triggered.
After detecting the minor fault and alarm, refer to Table 5.14 to take proper measures and remove the cause.
Table 5.14 Alarm Codes, Causes, and Possible Solutions
Digital Operator Display Minor Fault Name
BAT
Battery Voltage Low
Low battery voltage has been detected.
Cause Possible Solutions
Minor Fault
Output
H2-=10
The battery voltage has fallen to 3 V or lower. Replace the battery. Yes
Digital Operator Display Minor Fault Name
bb
Drive Baseblock (Voltage)
Drive output interrupted as indicated by an external baseblock signal.
Cause Possible Solutions
Minor Fault
Output
H2-=10
An external baseblock signal has been input at
one of the sequence input terminals 1 to 16.
⇒Check the external circuit (sequence inputs), and review the input
timing of baseblock signals.
No
Digital Operator Display Minor Fault Name
bUS
Option Communication Error
After initial communication was established, the connection was lost.
Assign a Run command or frequency reference to the option card.
Cause Possible Solutions
Minor Fault
Output
H2-=10
Communications wiring is faulty, there is a
short circuit, or something is not connected
properly.
Check for faulty wiring.
⇒Correct the wiring.
⇒Check for disconnected cables and short circuits. Repair as needed.
Yes
The communication option card is damaged.
⇒ If there are no problems with the wiring and the fault continues to
occur, replace the option card.
The communication option card is not
properly connected to the drive.
The connector pins on the option card are not properly lined up with
the connector pins on the drive.
⇒Reinstall the option card.
A data error occurred due to noise.
Check options available to minimize the effects of noise.
⇒Take steps to counteract noise in the control circuit wiring, main
circuit lines and ground wiring.
⇒Try to reduce noise on the controller side.
⇒Use surge absorbers on magnetic contactors or other equipment
causing the disturbance.
⇒Use only recommended shielded line. Ground the shield on the
controller side or on the drive input power side.
⇒Separate all wiring for comm. devices from drive input power lines.
Install an EMC noise filter to the drive input power supply.