Yaskawa P7 Drive User Manual - Manual (Page 92)

Programming 5 - 8
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.
Drive terminal S2 is a dedicated input for reverse Run/Stop.
b1-07 Local/Remote Run Selection
When the Drive is switched between the Local (Hand) mode (the digital operator) to the Remote (Auto) mode (determined by
b1-01 and b1-02), there is the possibility that a Run command is already present (i.e. a contact closure between S1 and SN
when b1-02= “1: Terminals”). 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 safety precaution, the Drive will not normally respond to a Run input when the digital operator is being used to adjust
parameters. If it is necessary that external Run commands be recognized even while the Drive is being programmed, set
b1-08= “1: Enabled”.
Setting Description
0 Reverse Enabled
1 Reverse Disabled (factory default)
2 Exchange Phase
3 ExchgPhs, Rev Dsbl
Setting Description
0 Cycle Extern Run (factory default)
1 Accept Extrn Run
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 (factory default)
1 Enabled