Yaskawa F7 Drive Programming Manual - Manual (Page 16)

Programming 8
To issue a run command via serial communication : Set b1-02= “2: Serial Com” and connect the RS-485/422 serial
communication cable to R+, R-, S+, and S- on the removable terminal block.
To issue the Run command via the communication option board: Set b1-02= “3: Option PCB”, and plug a communication
option board into the 2CN port on the Control PCB. Consult the manual supplied with the option board for instructions on
integrating the Drive into your communication system.
b1-03 Stopping Method Selection
There are four methods of stopping the Drive when the Run command is removed.
“0:Ramp to stop”: When the Run command is removed, the Drive will decelerate the motor to 0 rpm. The rate of deceleration
is determined by the active deceleration time. The factory default Decel Time is parameter C1-02.
When the output frequency has dropped below the DC Injection Start Frequency in b2-01 (Default = 0.5HZ) DC current will
be injected in the motor at a level determined by b2-02 (50% Default). The DC Injection condition will occur for the time
specified by b2-04 (0.0 Default), to establish the end point of the ramp. DC injection can be used to insure the motor is at zero
rpm prior to the Drive shutting off.
Fig. 4 Deceleration to Stop
The actual deceleration time can be determined by the following formula
If S-Curve characteristics are specified by the Drive programming, they will add to the total time to stop.
“1:Coast to stop”: When the Run command is removed, the Drive will turn off its output and the motor will coast
(uncontrolled deceleration). The friction of the driven equipment will eventually overcome any residual
inertia of the system and the rotation will stop.
IMPORTANT
If b1-01= ”3: Option PCB” but an option board is not installed in 2CN, an “OPE05” operator programming
error will be displayed on the digital operator and the Drive will not run.
Setting Description
0 Ramp to Stop (factory default)
1 Coast to Stop
2 DC Injection to Stop
3 Coast w/Timer
ON
OFF
Run Command
Output Frequency Deceleration Time (C1-02)
DC Injection Brake
100 %
0 %
TIME
| b2-04 |
b2-01
(CLOSED)
(OPEN)
02) - (C1 Time Decel active of Setting
04) - (E1 Frequency Maximum
command stop of at time Freq. Output
Stop to Time × = 02, -04, -06 or -08)