VFD68 Variable Frequency Drives
89
Password Lock and Unlock
Lock
1.
Set the parameter restriction level as shown in Table 84.
2.
Enter a four-digit number (1000 to 9998) as a password.
•
When a password is registered, parameter reading and writing is restricted with the restriction level set
in P.297 until unlocking.
•
After registering a password, a read value of P.297 is always 0 to 5.
•
When a password-restricted parameter is read or written, LOCd appears on the display.
•
Even if a password is registered, parameters that the VFD itself writes, such as VFD Parts Life, are
overwritten occasionally.
Unlock
You can unlock the password one of two ways:
•
enter a password in P.297
•
perform a parameter all clear (see
Enter a Password in P.297
Entering a correct password in P.297 unlocks the VFD and sets P. 297 back to 9999 (no password lock). You
must enter a setting from 1000 to 9998 again for this parameter to register a new 4-digit password. Entering an
incorrect password:
•
(when P.296 = 1 to 6) creates a password unlock error, but does not lock the VFD. If the correct password
is eventually entered, the VFD68 will unlock.
•
(when P.296 = 101 to 106) creates a password unlock error.
Note:
If the password unlock error has occurred five times, the VFD password function locks, and you
must perform a Parameter All Clear to unlock the restriction (see
page 89). Entering the correct password after the fifth incorrect entry has no effect.
Perform a Parameter All Clear
•
If you forgot the password, perform a parameter all clear to unlock the parameter restriction.
Note:
When you perform a parameter all clear, all parameters are restored to the default values.
•
Parameter all clear cannot be performed while the VFD has an active voltage output.
Table 84: Set Password Restriction Level (P.296)
P.296 Setting
Restriction of Password Unlock
Error
P.297 Display
1 to 6
No restriction
Always 0
101 to 106
Restricted at fifth error
1
1.
If the password unlock error has occurred five times, see
to unlock the restriction.
Entering the correct password after the fifth incorrect entry has no effect.
Displays error count (0 to 5)
