Feed/Dwell Operation - Mitsubishi Electric MELSEC iQ-R16MTCPU Programming Manual

Feed/dwell operation

A servo program for feed/dwell operation is not necessary. Pressure profile data from the device specified with the pressure
control parameter "Pressure profile start device" is written to the device, and feed/dwell operation starts by turning the feed/
dwell startup device from OFF to ON. The acceleration/deceleration time or pressurization/depressurization time for the
speed limit value and pressure command can be set separately.
An acceleration/deceleration time or pressurization/depressurization time for speed limit value or pressure command that is
valid only when switching from feed operation to dwell operation can also be set.
By setting "1: The time constant is invalid and pressure command points for the second step and after are connected with a
straight line" in "Mode selection" of the pressure profile data, the time constant can be made invalid for the pressure command
of the second step of dwell data and after, and the operation can connect steps with a straight line.
When the "Pressure increasing direction selection for positioning address" of the servo parameter "Pressure control function
selection 1 (PT12)" is set to "0: Increase pressure with the decrease of positioning address", or for servo amplifiers that do not
support "Pressure increasing direction selection for positioning address", set the address direction of the servo amplifier so
that forward direction is a negative direction.
Feed
PR1 PR2
Speed/
Pressure
PR0 V2
V1
V0
1H 2 4
SS S1 S2 S3
Execution point output No.
When the servo parameter "Pressure control function selection 1 (PT12)" is changed, turn the power supply of
the Multiple CPU system OFF to ON again, or reset the Multiple CPU system.
If operated without the new settings being reflected in the system, an unintended operation such as the
movement to the end address without referring to load cell pressure may occur.
Dwell
V3 V1
V2
PR1 PR2
V4
PR3 PR4
8 10 1H 2
S4 T1
Feed to dwell switching Mode reset
7 AUXILIARY AND APPLIED FUNCTIONS
457
7.7 Pressure Control
7