5. Control Input / Output
5-6
Table 5-3 Programmable sequence input functions (2)
Symbol
Name
Function
BUP
Ratio interlock
bias increase
BDW
Ratio interlock
bias decrease
IVLM
Bias BUP/BDW
selection
When IVLM is ON, the ratio interlock function increases or decreases the
frequency setting output by BUP or BDW functions. The motor increases
or decreases its speed according currently valid ramp rate.
When IVLM turns OFF, the bias increase/decrease value will be cleared
to zero, and BUP/BDW operation will be disabled.
AUXDV
Auxiliary drive
selection
The dual drive settings are validated with this signal.
PICK
Pick-up
While this signal is ON, pick-up (flying start) operation is effected as soon
as RUN or R RUN is ON.
EXC
Pre-excitation
Pre-excitation is applied to the motor. Pre-excitation consist to
establishing only the flux in the motor without generating toque. This is
useful when high torque is required immediately at the start time.
ACR
ACR
ACR operation is selected.
PCTL
P Control
ASR control is changed from the PI control to the P control.
LIM1
Drive torque
limit
changeover
When this function is ON, is possible to control the drive torque limit, by
an analog input signal or by a serial transmission signal.
LIM2
Regenerative
torque limit
changeover
When this function is ON, is possible to control the regenerative torque
limit, by an analog input signal or by a serial transmission signal.
MCH
Machine time
constant
changeover
This function allows ASR gain changeover from two machine time
constant values.
machine time constant 1 (A10-1) is available if MCH is OFF.
Machine time constant 2 (B15-0) is available if MCH is ON.
RF0
0 setting
The speed setting is changed to 0 rpm.
DROOP
Drooping
changeover
Drooping function is validated. (B13-5)
DEDB
Dead band
setting
The dead band setting of ASR is validated. (B14-0)
TRQB1
Torque bias
setting 1
The torque bias input 1 is valid.
TRQB2
Torque bias
setting 2
The torque bias input 2 is valid.
PIDEN
PID control
selection
The PID control is validated. Useful function for slow processes control
(Note)
ASR: Automatic Speed Regulator
ACR: Automatic Current Regulator
