YASKAWA P1000 Technical Manual page 210

5.7 H: Terminal Functions
NOTICE: Rapid deceleration can trigger an overvoltage fault. When faulted, the drive output shuts off, and the motor coasts. To avoid this
uncontrolled motor state and to ensure that the motor stops quickly and safely, set an appropriate Fast Stop time to C1-09.
Setting 18: Timer Function Input
This setting configures a digital input terminal as the input for the timer function. Use this setting combination with the timer
function output (H2-oo = 12).
Setting 19: PID Disable
Close a digital input to indefinitely disable the PID function. When the input is released, the drive resumes PID operation.
Refer to PID Block Diagram on page
Setting 1A: Accel/Decel Time Selection 2
Selects accel/decel times 1 to 4 in combination with the Accel/decel time selection 1 command.
Accel, Decel Times 1 and 2 on page 177
Note: Setting is available in drive software versions PRG: 8502 and earlier.
Setting 1B: Program Lockout
Parameter values cannot be changed when an input is programmed for Program Lockout and the input is open. It is still possible,
however, to view and monitor parameter settings.
Setting 1E: Reference Sample Hold
This function allows the user to sample an analog frequency reference signal being input to terminal A1, A2, or A3 and hold
the frequency reference at the sampled level. When the Analog Frequency Reference Sample/Hold function is held for at least
100 ms, the drive reads the analog input and changes the frequency reference to the newly sampled speed as illustrated in
Figure 5.42.
When the power is shut off and the sampled analog frequency reference is cleared, the frequency reference is reset to 0.
An oPE03 error will occur when one of the following functions is used simultaneously with the Analog frequency reference
sample/hold command:
• Hold accel/decel stop (setting: A)
• Up command, Down command (setting: 10, 11)
• Offset frequency (setting: 44 to 46)
210
Run/Stop
Fast-Stop
H1- = 17
ON
Output Frequency
Figure 5.41 Fast Stop Sequence
Refer to b4: Timer Function on page 160
163.
for details.
Reference
Sample Hold Input
Figure 5.42 Analog Frequency Reference Sample/Hold
ON
ON
Decelerates at C1-09
for details.
OFF ON
100 ms 100 ms
YASKAWA SIEP YAIP1U 01C AC Drive - P1000 Technical Manual
ON
TIME
Refer to C1-01 to C1-04:
Frequency
Reference
Time