Mitsubishi Electric 800 Series Instruction Manual page 408

• The following is the operation example of the FUP and FDN signals.
Measured value
Upper limit level
Pr.131(Pr.1143)
Measured
value
Lower limit level
Pr.132(Pr.1144)
FUP
FDN
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)
FUP
FDN
Output frequency
Detection time Detection time Detection time
Pr.1370 Pr.1370 Pr.1370
or or or
Detection Detection Detection
Pr.1346 Pr.1346 Pr.1346
time time time
Pr.1370 Pr.1370 Pr.1370
Detection time Detection time Detection time
Pr.1370 Pr.1370 Pr.1370
Detection time Detection time Detection time
Pr.1370 Pr.1370 Pr.1370
or or or
Pr.1346 Pr.1346 Pr.1346
Operation when reverse action is selected
Detection time Detection time Detection time
Pr.1370 Pr.1370 Pr.1370
Detection time Detection time Detection time
Pr.1370 Pr.1370 Pr.1370
Measured value ≤ lower limit:
Operation continued without
decelerating to stop
Time
Selectable with Pr.554
Time
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
3
4
5
5
5
6
7
8
9
10
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