Mitsubishi Electric 800 Series Instruction Manual page 362

NOTE
• After changing the Pr.267 setting, check the voltage/current selection switch. Incorrect setting may cause a fault, failure or
malfunction. (Refer to
• If the Multi-speed operation (RH, RM, RL, or REX) signal, or JOG signal is input during regular PID control, PID control is
interrupted. However, at dancer control, these signals are treated as main speed commands, so PID control is continued.
• During dancer control, Pr.44 and Pr.45 (Second acceleration/deceleration time) is the parameter for setting the acceleration/
deceleration time for the main speed command. This function does not work as a second function.
• When the switchover mode is set by setting "6" to Pr.79, dancer control (PID control) is invalid.
• The acceleration/deceleration action of the main speed command is the same as that when the frequency is increased or
decrease by analog input. The SU signal sometimes stays ON even if operation is turned ON/OFF by the start signal. The set
frequency monitor is the value "main speed command + PID control" which is constantly changing.
• With the main speed setting frequency setting, acceleration/deceleration is performed for the acceleration/deceleration time
set in Pr.44 and Pr.45, and with the output frequency setting, acceleration/deceleration is performed for the acceleration/
deceleration time set in Pr.7 and Pr.8. For this reason, with the output frequency, when the time set in Pr.7 and Pr.8 is longer
than the time set in Pr.44 and Pr.45, acceleration/deceleration is performed for the acceleration/deceleration time set in Pr.7
and Pr.8.
• The limit of the integral term is the smaller of 100% and the value after conversion of the straight line after interpolation of Pr.1
Maximum frequency by C2 (Pr.902) and Pr.125 to the PID manipulated amount.
However, note that the lower limit frequency limits the output frequency, but does not restrict the action of the integral item.
Parameters referred to
Pr.57 Restart coasting timepage 362
Pr.59 Remote function selectionpage 171
Pr.73 Analog input selectionpage 274
Pr.79 Operation mode selectionpage 180
Pr.178 to Pr.189 (Input terminal function
Pr.190 to Pr.196 (Output terminal function
C2 (Pr.902) to C7 (Pr.905) Frequency setting voltage (current)
page 274 for the setting.)
selection)page 292
selection)page 258
bias/gainpage 282
14.(A) Application Parameters
14.6 Dancer control
11
12
13
14
15
16
17
18
19
20
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