5.7 H: Terminal Functions
186 YASKAWA ELECTRIC SIEP C710616 35D YASKAWA AC Drive E1000 Technical Manual
Figure 5.36 shows an operation example of Fast Stop.
Figure 5.36
Figure 5.36 Fast Stop Sequence
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- = 12). Refer to b4: Delay Timers on page 144 for details.
Setting 19: PI Disable
When the PI function has been enabled by parameter b5-01, it can be indefinitely disabled by closing a digital input.
When the input is released, the drive resumes PI operation. Also refer to PI Block Diagram on page 147.
Setting 1B: Program Lockout
When an input is programmed for Program Lockout, parameters values cannot be changed as long as this input is open (it
is still possible 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. Once 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 5.37.
When the power is shut off and the sampled analog frequency reference is cleared, the frequency reference is reset to 0.
Figure 5.37
Figure 5.37 Analog Frequency Reference Sample/Hold
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)
Setting 20 to 2F: External Fault
By using the External fault command, the drive can be stopped when problems occur with external devices.
To use the External fault command, set one of the multi-function digital inputs to any value between 20 to 2F. The digital
operator will display EF where is the number of the terminal to which the external fault signal is assigned.
Run/Stop
TIME
Fast-Stop
H1- = 17
Decelerates at C1-09
ON ON
ONON
Output Frequency
Frequency
reference
Time
100 ms
Referenece
Sample Hold Input
Analog signal
100 ms
ONOFF
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