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6F3A4768
5.4.3 Torque Reference and Current Reference
Signal SFC_T_R equivalent to the torque reference, which is the speed control results, is input to calculate the
torque limit and process di/dt in order to calculate the final torque reference signal T_R.
5.4.3.1 Tension Control (Option)
If optional tension control is used, the TRQ_REF signal obtained from the calculation results of the speed control
is compared with the tension reference TENS_R signal input externally to find the torque reference. In this
optional control, operation is made based on TENS_R used as torque reference during normal operation and
the speed control circuit functions as speed limit. (Operation is made based on the external torque reference in
winding machines. However, if materials are broken, operation is changed to the speed control operation.)
Torque reference
input
EXT_TRQ
(option)
Output of torque
reference speed
control
Section 5.4.2
SFC_T_R
+
+
$LMT_DIDT
<di/dt>
Limit
calculation
Section 5.4.2..3
<Torque limit>
4000/100%
Tension reference input
with gain
(option)
EXT_TENS_GAIN
TENS_R2
X
10000
1
Tension auxiliary
reference input
TENS_R_A
(option)
Tension reference
TENS_R1
(option)
4000/100%
TRQ_REF
TENS_R
+
+
A
B
Min
A
B
Max
A
B
A>B
IMPACT_TEST25
T_R
To
Section
5.4.4
4000/100%
Reverse coiling option
command
SI_DATA1
R_TEN
CUT detection
If control by the output
signal of the speed
control continues for
60 ms or longer, this
status is determined
asCUT detection.
CUT output
SSEQ_OUT1 Bit 2
Tension control
selection
sequence
+
+
Fig. 5.4.6 Torque Reference
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