Yaskawa P7B Drive Bypass - Manual (Page 109)

Programming 5 - 15
" b1-04 Reverse Operation
For some applications reverse motor rotation is not applicable and may even cause problems (e.g., air handling units,
pumps, etc.). Setting parameter b1-04 to 1 or 3 will cause the Drive to ignore any inputs for reverse operation. Setting
parameter b1-04 to either 2 or 3 will change the motor shaft rotation when a Forward Run command is given by exchanging
the order of the output phasing.
The factory default setting of parameter b1-04 is “1: Disabled”. When b1-04= “1: Disabled”, reverse operation is prohibited
and no exchanging of output phasing occurs.
" b1-07 Local/Remote Run Selection
When the Drive is switched between the Local (Hand) mode (the digital operator) to the Remote (Auto) mode by the Hand/
Off/Auto selector switch, there is the possibility that a Run command is already present (i.e. a contact closure between
terminals TB1-3 and TB1-4. Parameter b1-07 determines whether the Drive will:
Ignore the external Run command until it is removed and re-instated (b1-07= “0: Cycle Extern Run”)
OR
Accept the already present Run command and immediately begin acceleration to the commanded speed
(b1-07= “1: Accept Extrn Run”).
" b1-08 Run Command Selection During Programming
As a convenience to the user, the Drive will respond to a Run input even when the digital operator is being used to adjust
parameters. If it is necessary that external Run commands not be recognized while the Drive is being programmed, set
b1-08= “0: Disabled”.
Setting Description
0 Reverse Enabled
1 Reverse Disabled (factory default)
2 Exchange Phase
3 ExchgPhs, Rev Dsbl
Setting Description
0 Cycle Extern Run
1 Accept Extrn Run (factory default)
IMPORTANT
When switching from local mode to Auto mode when b1-07= “1:Accept Extrn Run” the Drive may start
unexpectedly if the Run command is already applied. Be sure all personnel are clear of rotating machinery
and electrical connections prior to switching between local mode and Auto mode.
Setting Description
0 Disabled
1 Enabled (factory default)