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Control Mode Switchover Timing - Mitsubishi Electric FR-V520-1.5K to 55K Instruction Manual

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4.4 Control mode switchover timing

Depending on a parameter setting change or whether the MC terminal turns on/off, the control mode switches at the
following timing.
Switchover Pattern
The mode can be changed any time independently of whether the motor is at a stop or running
Speed
Torque
or the DC brake (servo lock) is operating.
T he m ode can be changed w hen the speed is equal to or low er than the low speed detection level.
S pe ed
P ositio n
W hen the speed is higher than the low speed detection level, changing the M C signal during
rotation w ill not sw itch the control m ode to the other, and as soon as the speed falls to or below P r.
P o sition
To rqu e
865 "low speed detection level", the control m ode is changed according to the term inal status.
〈Example: Speed
Position, when Pr. 800 = 4〉
Low speed detection
level (Pr. 865)
STF
MC
! Terminals and terminal functions changed by control mode switchover
The terminal functions vary with the control mode as indicated in the following table.
Terminal
Classification
Name
STF
STR
DI1
Contact input
signal
DI2
DI3
DI4
Contact output
ABC
DO1
Open collector
DO2
output
DO3
2
Analog input
1*
3
DA1
Analog output
DA2
*: Assumes that the Pr. 868 value is the factory setting.
REMARKS
• DI1 to DI4, STR terminal function selection ⇒ Pr. 180 to Pr. 183, Pr. 187 (input terminal function selection). (Refer to page 61.)
• DO1 to DO3, ABC terminal function selection ⇒ Pr. 190 to Pr. 192, Pr. 195 (output terminal function selection). (Refer to page
61.)
• No. 1 terminal function selection ⇒ Pr. 868 "No. 1 terminal function assignment" (
(detailed).)
• No. 1, 2, 3 terminal bias/gain adjustment ⇒ Pr. 902 to Pr. 905, Pr. 917, Pr. 918 (bias/gain adjustment) (Refer to page 47.)
• DA1, DA2 terminal function selection ⇒ Pr. 54, Pr. 158 (DA1, DA2 function selection) (Refer to page 56 (DA1) and page 60
(DA2).)
• DA1, DA2 terminal calibration ⇒ Pr. 900, Pr. 901 (DA1, DA2 terminal calibration) (Refer to page 25.)
• MC signal terminal assignment ⇒ Set "26" to any of DI1 to DI4 and STR using any of Pr. 180 to Pr. 183 and Pr. 187 (input ter-
minal function selection). (Refer to page 61.)
• For the change in terminals and terminal functions during position control, refer to the Instruction Manual (detailed).
• Control system selection ⇒ Pr. 800 (Refer to page 53.)
Switchover Operation
Speed control
Speed Control
Forward rotation command
Reverse rotation command
Multi-function input 1
Multi-function input 2
Multi-function input 3
Multi-function input 4
Alarm contact
Multi-function output 1
Multi-function output 2
Multi-function output 3
Speed command input
Speed command
auxiliary input
Torque restriction input
Multi-function monitor output 1
Multi-function monitor output 2
42
Control mode switchover timing
Position control
Description
Speed Control/Torque Con-
Torque Control
Speed command/speed
Speed restriction input
restriction
Speed restriction
Speed command/speed
auxiliary input
restriction
Torque restriction/torque
Torque command input
command
Refer to the Instruction Manual
trol Switchover
(MC:ON/OFF)
4

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