Mitsubishi Electric FR-E700 Instruction Manual page 424

Special operation
Dancer control overview
Performs dancer control by setting 40 to 43 in Pr. 128 "PID action selection". The main speed
command 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 command. For acceleration/deceleration of the main speed, set the acceleration
time in Pr. 44 "Second acceleration/deceleration time" and the deceleration time in Pr. 45 "Sec-
ond deceleration time".
Set 0s normally to Pr.7 "Acceleration time" and Pr.8 "Deceleration time". When the Pr. 7 and
Pr. 8 setting is large, response of dancer control during acceleration/deceleration is slow.
Fig. 6-144: Signal overlay during dancer control
Connection diagram
The following figure shows a typical application example:
Pr. 128 = 41
Pr. 183 = 14
Pr. 190 = 15
Pr. 191 = 14
Pr. 192 = 16
Fig. 6-145: Example in source logic
The main speed command differs according to each operation mode (external, PU, com-
munication).
The used output signal terminal changes depending on the Pr. 190 to Pr. 192 "Output
terminal selection" setting.
The used input signal terminal changes depending on the Pr. 178 to Pr. 184 "Input terminal
selection" setting.
The AU signal need not be input.
6 - 284
PID adding value
Main
speed
Power
supply
Forward rotation
Reverse rotation
PID control selection
Potentiometer
1kΩ, 1–2W
(Main speed
command)
Feedback value of
dancer roll position
ON
U
L1
L2 V
L3
W
STF
STR
MRS (X14)
(FUP) RUN
PC
10
(FDN) FU
2
SE
5
4
Parameter
Output frequency
Tme
I001841E
M
Upper limit (FUP)
Lower limit (FDN)
Output signal common
I001842C