Yaskawa R1000 Series Power Regenerative Unit - Manual (Page 105)

5.4 Alarm Detection
YASKAWA ELECTRIC TOEP C710656 08B YASKAWA Power Regenerative Unit - R1000 Instruction Manual 105
Tr
ou
blesh
oot
ing
5
Digital Operator
Display
Minor Fault Name Detail
Alarm Output
(H2-†† = 10)
EF1
External Fault
(Input Terminal S1)
External fault at multi-function input terminal S1.
YES
EF2
External fault
(input terminal S2)
External fault at multi-function input terminal S2.
EF3
External fault
(input terminal S3)
External fault at multi-function input terminal S3.
EF4
External fault
(input terminal S4)
External fault at multi-function input terminal S4.
EF5
External fault
(input terminal S5)
External fault at multi-function input terminal S5.
EF6
External fault
(input terminal S6)
External fault at multi-function input terminal S6.
EF7
External fault
(input terminal S7)
External fault at multi-function input terminal S7.
EF8
External fault
(input terminal S8)
External fault at multi-function input terminal S8.
Cause Possible Solutions
An external device has tripped an alarm
function.
Remove the cause of the external fault and reset the multi-function input value.
Refer to
Stopping the Regenerative Unit for Faults in Peripheral Devices on page 78 for
details.
Wiring is incorrect.
• Ensure the signal lines have been connected properly to the terminals assigned for external fault
detection (H1-†† = 24 to 27, 2C to 2F).
• Reconnect the signal line. Refer to Stopping the Regenerative Unit for Faults in Peripheral
Devices on page 78 for details.
Multi-function contact inputs are set
incorrectly.
• Check if the unused terminals have been set for H1-†† = 24 to 27, 2C to 2F (External Fault).
• Change the terminal settings. Refer to
Stopping the Regenerative Unit for Faults in Peripheral
Devices on page 78 for details.
Digital Operator
Display
Minor Fault Name Detail
Alarm Output
(H2-†† = 10)
Fan
Internal Circulation
Fan Fault
The internal circulation fan in the regenerative unit is faulty. YES
Cause Possible Solutions
An internal circulation fan is faulty.
Cycle the power supply and see if the fault occurs again.
Check the operation of the internal circulation fans.
Check U4-03 (Cooling Fan Operation Time) and U4-04 (Cooling Fan Maintenance Display).
If the life of the internal circulation fans has expired or if a fan is faulty, perform fan replacement
according to instructions in this manual.
An internal circulation fan or MC power supply
is faulty.
Cycle the power supply and see if the fault occurs again.
If the fault occurs repeatedly, replace the board or the regenerative unit. For information on board
replacement, consult with your Yaskawa representative or the nearest Yaskawa sales office.
Digital Operator
Display
Minor Fault Name Detail
Alarm Output
(H2-†† = 10)
Fdv
Power Supply
Frequency Fault
The input power supply frequency exceeded the allowable frequency
fluctuation.
YES
Cause Possible Solutions
A momentary power loss occurred.
Investigate and correct the cause and reset the fault.
Refer to
Diagnosing and Resetting Faults on page 112 .
An input power supply wiring terminal is loose.
The fluctuation in the voltage of the input
power supply is too large.
The AC power supply fuse is open.
• A transistor inside the regenerative unit was destroyed.
• The input wiring or drive output has ground faulted or short circuited.
Contact your Yaskawa representative or the nearest Yaskawa sales office.
The phase rotation direction has changed in the
input power supply.
Correct the wiring.
The detected power supply frequency exceeded
the allowable value.
Improve the power supply.
TOEP_C710656_08B_1_0.book 105 ページ ２０１５年２月５日 木曜日 午前１０時７分