Troubleshooting
6
6.6 Minor Faults/Alarms
YASKAWA SIEPYAIH6B01A HV600 AC Drive Bypass Technical Reference 507
Code Name Causes Possible Solutions
The main circuit capacitors are unserviceable. • Examine the capacitor maintenance time in monitor U4-05
[CapacitorMaintenance].
• If U4-05 is more than 90%, replace the capacitor. Contact
Yaskawa or your nearest sales representative for more
information.
• Examine the input power for problems.
• Re-energize the drive.
• If the alarm stays, replace the circuit board or the drive. Contact
Yaskawa or your nearest sales representative for more
information.
Note:
• The drive detects this error if the DC bus voltage changes irregularly without regeneration.
• If the drive detects this error, the terminal set to H2-01 to H2-03 = 10 [MFDO Function Selection = Alarm] will activate.
• Use L8-05 [Input Phase Loss Protection Sel] to enable and disable PF detection.
Code Name Causes Possible Solutions
SAFE Safety Open
The bypass received a Run command when a safety
was open.
Remove the cause of the open safety.
Code Name Causes Possible Solutions
SAFE Customer Safeties
External contact from customer wiring is open. Examine the cause of the open safety.
Note:
• If the terminal set for H1-xx = B1 [MFDI Function Selection = Customer Safeties] deactivates, the drive detects this alarm.
• If the drive detects this error, the terminal set to H2-01 to H2-03 = 10 [MFDO Function Selection = Alarm] will activate.
• This alarm has display priority over INTLK [BAS Interlock].
Code Name Causes Possible Solutions
SE Modbus Test Mode Error
MEMOBUS/Modbus communications self-
diagnostics [H1-xx = 67] was done while the drive
was running.
Stop the drive and do MEMOBUS/Modbus communications self-
diagnostics.
Note:
If drive detects this error, the terminal set to H2-01 to H2-03 = 10 [MFDO Function Selection = Alarm] will activate.
Code Name Causes Possible Solutions
SMK_ALRM Smoke Alarm Active
The bypass detected a Smoke Alarm condition. • Check the digital input programmed for Smoke Alarm (Z2-0x =
40).
• Check the connected device for continuity.
• Check Bypass Digital Input Invert Settings in Z2-09 to Z2-16.
Code Name Causes Possible Solutions
STo Safe Torque OFF
Safe Disable inputs H1-HC and H2-HC are open. • Make sure that the Safe Disable signal is input from an external
source to terminal H1-HC and H2-HC.
• When the Safe Disable function is not in use, use a jumper to
connect terminals H1-HC and H2-HC.
There is internal damage to the two Safe Disable
channels.
Replace the board or the drive. Contact Yaskawa or your nearest
sales representative to replace the board.
Note:
• The drive will not output an alarm signal for this alarm.
• If the drive detects this error, the terminal set to H2-01 to H2-03 = 21 [MFDO Function Selection = Safe Torque OFF] will activate.
Code Name Causes Possible Solutions
SToF Safe Torque OFF Hardware
One of the two terminals H1-HC or H2-HC received
the Safe Disable input signal.
The Safe Disable input signal is wired incorrectly.
• Make sure that the Safe Disable signal is input from an external
source to terminals H1-HC or H2-HC.
• When the Safe Disable function is not in use, use a jumper to
connect terminals H1-HC and H2-HC.
There is internal damage to one Safe Disable channel. Replace the board or the drive. Contact Yaskawa or your nearest
sales representative to replace the board.
Note:
If the drive detects this error, the terminal set to H2-01 to H2-03 = 10 [MFDO Function Selection = Alarm] will activate.
Code Name Causes Possible Solutions
TiM Keypad Time Not Set
There is a battery in the keypad, but you have not set
the date and time.
Use the keypad to set the date and time.
Note:
• Parameter o4-24 [bAT Detection selection] enables and disables TiM detection.
• If the drive detects this error, the terminal set to H2-01 to H2-03 = 10 [MFDO Function Selection = Alarm] will activate.
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