Mitsubishi Electric fr-e700 series, Instruction Manual

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Parameter Special operation
FR-E700 SC EC/ENE 6 - 307
Dancer control overview
Performs dancer control by setting 40 to 43 in Pr. 128 "PID action selection". The main speed com-
mand is the speed command of each operation mode (external, PU, Network). Performs PID control by
the position detection signal of the dancer roller, then the result is added to the main speed com-
mand. For acceleration/deceleration of the main speed, set the acceleration time in Pr. 44 "Second ac-
celeration/deceleration time" and the deceleration time in Pr. 45 "Second deceleration time".
Set 0s normally to Pr. 7 "Acceleration time" and Pr. 8 "Deceleration time". When the Pr. 7 and Pr. 8 set-
ting is large, response of dancer control during acceleration/deceleration is slow.
Connection diagram
The following figure shows a typical application example:
햲
The main speed command differs according to each operation mode (external, PU,
communication).
햳
The used output signal terminal changes depending on the Pr. 190 to Pr. 192 "Output terminal
selection" setting.
햴
The used input signal terminal changes depending on the Pr. 178 to Pr. 184 "Input terminal
selection" setting.
햵
The AU signal need not be input.
I001841E
Fig. 6-158: Signal overlay during dancer control
I002140C
Fig. 6-159: Example in source logic
ON
Output fr
equenc
y
Main speed
Output frequency
Tme
PID adding value
Power
supply
Forward rotation
Reverse rotation
PID control selection
Potentiometer
1 k , 1–2 W
(Main speed
command)
햲
Upper limit (FUP)
Lower limit (FDN)
Output signal common
햳
햴
햴
Pr. 128 = 41
Pr. 182 = 14
Pr. 190 = 15
Pr. 191 = 14
Pr. 192 = 16
Feedback value of
dancer roll position
햵