Mitsubishi Electric 800 Series Instruction Manual page 407

 PID automatic switchover control (Pr.127)
• The system can be started up more quickly by starting up without PID control activated.
• When Pr.127 PID control automatic switchover frequency is set, the startup is made without PID control until the output
frequency reaches the Pr.127 setting. Once the PID control starts, the PID control is continued even if the output frequency
drops to Pr.127 setting or lower.
Output frequency
Pr.127
STF
 Selection of action at a communication error and sleep function stop
selection (FUP signal, FDN signal, Y48 signal, Pr.554)
• Using Pr.554 PID signal operation selection, set the action when the measured value input exceeds the upper limit
(Pr.131 PID upper limit) or lower limit (Pr.132 PID lower limit), or when the deviation input exceeds the permissible value
(Pr.553 PID deviation limit).
• Set the time from when the measured value input exceeds the Pr.131 or Pr.132 setting until the FUP or FDN signal is
output in Pr.1370 Detection time for PID limiting operation. To set the detection time for upper and lower limits
separately, set Pr.1346 PID lower limit operation detection time.
• Set Pr.554 to select the operation when the FUP/FDN or Y48 signal is output, and the operation when the sleep function
is activated.
Pr.554
setting
0 (Initial value) Signal output only
1
Signal output + output shutoff (E.PID)
2 Signal output only
3
Signal output + output shutoff (E.PID)
4
Signal output + deceleration stop (E.PID)
5
Signal output + deceleration stop (restart)
6
Signal output + deceleration stop (E.PID)
7
Signal output + deceleration stop (restart)
10 Signal output only
11
Signal output + output shutoff (E.PID)
12 Signal output only
13
Signal output + output shutoff (E.PID)
14
Signal output + deceleration stop (E.PID)
15
Signal output + deceleration stop (restart)
16
Signal output + deceleration stop (E.PID)
17
Signal output + deceleration stop (restart)
*1 When each of Pr.131, Pr.132 and Pr.553 corresponding to each of the FUP, FDN and Y48 signals is set to "9999" (function not activated), signal
output and protective function are disabled.
*2 At the same time with the signal output, the protective function (E.PID) is activated.
*3 At the same time with the signal output, deceleration is performed using the normal deceleration time. After the deceleration stop, the protective
function (E.PID) is activated.
*4 At the same time with the signal output, deceleration is performed using the normal deceleration time. When the measured value returns to
normal, operation can be restarted.
406
5. PARAMETERS
5.11 (A) Application parameters
Without PID
control
PID control
PID
At FUP signal, FDN signal output
Inverter operation
*1
At Y48 signal output
Signal output only
*2
Signal output + output shutoff
*2
*2 (E.PID)
Signal output only
*3
*4
Signal output + output shutoff
*3
*2
(E.PID)
*4
Signal output only
*2
Signal output + output shutoff
*2
*2 (E.PID)
Signal output only
*3
*4
Signal output + output shutoff
*3
*2
(E.PID)
*4
Time
*1
At SLEEP operation start
Coasts to stop
Deceleration stop