Yaskawa F7 Drive Programming Manual - Manual (Page 20)

Programming 12
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”.
b2 DC Braking
The DC Braking Group contains parameters associated with the DC injection braking feature. Parameters involving the starting
frequency, current level, braking time, and motor pre-heat current level are located here
.
b2-01 DC Injection Braking Start Frequency
Setting Range: 0.0 to 10.0 Hz
Factory Default: 0.5 Hz
Parameter b2-01 sets the output frequency where the Drive begins DC Injection during ramp to stop in order to lock the rotor
of the motor and established the end point of the ramp. If b2-01 < E1-09 (Minimum Frequency), then DC Injection begins at
E1-09.
Parameter b2-01 also determines the output frequency that the Drive must be at or below before a Zero Speed condition is
considered true. This affects any digital output configured as a Zero Speed signal (H2-0x= “1: Zero Speed”).
Fig. 8 DC Injection Braking During stopping
IMPORTANT
When switching from local mode to remote mode when b1-07=1 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
Output Frequency
t
b2-01
DC injection
| |
b2-04
ime