Toshiba T300MV2 - Speed Reference

IF08CZ10 April, 2019 - 43 -
CIRCUIT OPERATION (cont’d)
Speed Reference
An external speed reference with count 1/100% weighting is input by serial transmission or analog
input and subjected to rate processing and limit processing to output an SP_R signal. The sign of the speed
reference signal is "+" for normal rotation and "-" for reverse rotation.
CR_RATE_MRH
LMT_SP_MIN
Drooping (option)
Load Balance (option)
DT_LB_CMP_IN
SP_REF1
Serial
communication
or
Analog data
SP_REF2
+
SP_REFA2_G
SP_REFA2_D
X
B_EXT=1
SP_R_MEM
(E_HOLD
(option))
B_EXTR=1
CR_RATE_ACC
CR_RATE_DEC
CR_RATE_QSTOP
<RATE><LIMIT>
SP_R
+
+
+
+
+
SP_TEST29
Speed reference input
(option) FTC_SP_R
+ +
Impact compensation
(option) DT_IMP_T
SP_TEST22
LMT_SP_F
LMT_SP_R
FLT_DROOP
DROOP_R
1.0/100%
DROOP_GAIN_T
Torque Reference
Initial value: CR_DROOP_GAIN
+ +
Jogging (option)
JOG_R
+
+
+
+
+
+
+
SP_RE
F
A
1
+
B_SEL_DI=1
SP_REF
_
AIN0
SP_REF_AIN1
B_MRH_SEL=1
B_SP_UP
B_SP_DN
B_DIR0
B_DIR1
-1
0: Forward
1: Reverse
B_EXT0
B_EXT1
B_EXT
Bi-Directional
Reference
(+/-)
Uni-Directional
Reference
(+ only)
Minimum Limit
Speed Reference
(1) Speed references
SP_REF1 or SP_REF2 can be used when the drive speed is to be controlled from one location
only. When using local and remote control or there is a need for selection between two separate
inputs SP_REF_AIN1 and SP_REF_AIN2 should be used. To select between references, one of
the digital inputs should be programmed as SEL_DI and an external selection switch to change
SEL_DI should be connected.
SP_REF_AIN1 is used when the SEL_DI input is 0 (Open). SP_REF_AIN2 is used when SEL_DI is
1 (Closed). The start commands (EXT) are also different for this application. When SEL_DI is 0,
EXT0 should be used and when SEL_DI is 1, EXT1 should be used.
(2) LMT_SP_MIN
LMT_SP_MIN is used as a minimum speed. The drive will run at this speed anytime the start
command is on and the speed reference is less than LMT_SP_MIN.