YASKAWA AC Drive-A1000 Technical Manual page 211

• If the lower limit is set by both an analog input and d2-02, and the analog limit is higher than the d2-02 value, the drive
accelerates to the d2-02 value when a Run command is input. When the d2-02 value is reached, the drive accelerates to the
analog limit only if an Up or Down command is set.
Figure 5.58 shows an Up/Down function example with a lower frequency reference limit set by d2-02, and the frequency
reference hold function both enabled and disabled.
Setting 12, 13: Forward Jog, Reverse Jog
Digital inputs programmed as Forward Jog (H1-oo = 12) and Reverse Jog (H1-oo = 13) will be Jog inputs that do not
require a Run command. Closing the terminal set for Forward Jog input will cause the drive to ramp to the Jog frequency
reference (d1-17) in the forward direction. The Reverse Jog will cause the same action in the reverse direction. The Forward
Jog and Reverse Jog command can be set independently.
Note: The Forward Jog and Reverse Jog commands override all other frequency references. However, if the drive is set to prohibit reverse rotation
(b1-04 = 1), activating Reverse Jog will have no effect. Inputting both the Forward Jog and Reverse Jog are simultaneously for 500 ms or
longer will trigger an alarm will and the drive will ramp to stop.
Setting 14: Fault Reset
When the drive detects a fault condition, the fault output contact closes, the drive output shuts off, and the motor coasts to
stop (specific stopping methods can be selected for some faults such as L1-04 for motor overheat). After removing the Run
command, clear the fault either by pressing the RESET key on the digital operator or closing a digital input configured as a
Fault Reset (H1-oo = 14).
Note: Remove the Run command prior to resetting a fault. Fault Reset commands are ignored while the Run command is present.
Setting 15, 17: Fast Stop (N.O., N.C.)
The Fast Stop function operates similar to an emergency stop input to the drive. If a Fast Stop command is input while the
drive is running, the drive decelerates to a stop in the deceleration time set to C1-09
155). The drive can only be restarted after bringing the drive to a complete stop, turning off the Fast Stop input, and switching
off the Run command.
• To trigger the Fast Stop function with a N.O. switch, set H1-oo = 15.
• To trigger the Fast Stop function with a N.C. switch, set H1-oo = 17.
Figure 5.60 shows an operation example of Fast Stop.
YASKAWA ELECTRIC SIEP C710616 31B YASKAWA AC Drive – A1000 Technical Manual
Output frequency
upper limit
Accelerates to
lower limit
Lower limit
FWD run/stop
ON
Up command
ON
Down command
ON
Power supply
Figure 5.58 Up/Down Command Operation
Output
Frequency
FJOG
RJOG
Figure 5.59 FJOG/RJOG Operation
d4-01 = 1
Same
frequency
d4-01 = 0
ON
Frequency
reference
reset
ON
d1-17
d1-17
ON
ON
(Refer to C1-09: Fast Stop Time on page
5.7 H: Terminal Functions
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