Mitsubishi Electric FR-F800 Series Instruction Manual page 430

• The following is the operation example of the FUP and FDN signals.
Measured value
Upper limit level
Pr.131(Pr.1143)
Lower limit level
Pr.132(Pr.1144)
Output frequency
• When deceleration stop (restart) is selected (Pr.554 = "5, 7, 15, or 17"), deceleration starts at the same time the signal is
output and operation is decelerated to stop using the normal deceleration time. If the measured value falls within the range
between the upper and lower limits, restarting is enabled and operation will be restarted in the PID control mode.
When reverse action is selected for PID action, deceleration stop is not performed although the FDN signal is output when
the measured value falls below the lower limit. (When forward action is selected, deceleration stop is not performed
although the FUP signal is output when the measured value exceeds the upper limit.)
When the sleep function is used at the same time, the sleep function is prioritized during sleep operation.
Measured value
Upper limit level
Pr.131(Pr.1143)
Lower limit level
Pr.132(Pr.1144)
Output frequency
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Measured
value
Detection Detection Detection
time time time
Pr.1370 Pr.1370 Pr.1370
FUP
FDN
Detection time Detection time Detection time
Pr.1370 Pr.1370 Pr.1370
Detection time Detection time Detection time
Pr.1370 Pr.1370 Pr.1370
Pr.1346 Pr.1346 Pr.1346
FUP
FDN
search engine
Detection time Detection time Detection time
Pr.1370 Pr.1370 Pr.1370
or or or
Pr.1346 Pr.1346 Pr.1346
or or or
Measured value ≤ lower limit:
Operation continued without
decelerating to stop
Operation when reverse action is selected
Detection time Detection time Detection time
Pr.1370 Pr.1370 Pr.1370
Time
Selectable with Pr.554
Time
Detection time Detection time Detection time
Pr.1370 Pr.1370 Pr.1370
Time
Measured value ≥ upper limit: Measured value ≥ upper limit: Measured value ≥ upper limit:
Deceleration stop according to Deceleration stop according to Deceleration stop according to
the normal deceleration time the normal deceleration time the normal deceleration time
Time
Measured value < Upper limit:
Restart enabled
5. PARAMETERS
5.11 (A) Application parameters
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