IAI America ERC3 - Manual (Page 255)

Chapter 4 Operation
4.3
Operation in Pulse
Train Control Mode (How to Operate
Pulse
Train Control
Type)
245
4.3 Operation in Pulse Train Control Mode (How to Operate Pulse Train
Control Type)
In Pulse Train Mode, the actuator can be operated by the pulse train output of the host
controller (PLC) positioning control function.
An operation in Pulse Train Control Mode is available when ERC3 is the pulse train control type
(model code: PLN/PLP).
It is available to select 2 types of PIO patterns with different supportive functions by parameters.
This operation mode is not to be changed after the system is complete to be established or
during an operation. Select the PIO pattern considering the system operation specifications in
advance and design the wiring layout and operational sequence.
Caution: In Pulse Train Control Mode, the operation is performed corresponding to the
input pulse.
Input Pulse Value Ÿ Moving distance
Input pulse frequency Ÿ Velocity
Change in Input Pulse Frequency Ÿ Velocity change and acceleration/deceleration
Do not use the actuator above the specifications for the commands of the
movement amount, acceleration and deceleration from the host controller (PLC).
Doing so may cause an abnormal noise or malfunction.
[1] Guideline for PIO Pattern Selection and Supportive Functions
{ : Valid function
PIO Pattern
(Parameter No.25)
0 1
Mode Positioning mode Pressing mode
Dedicated home return signal { {
Brake control function { {
Torque limiting function {
Suppo
rtive
Functio
n
Position-command primary
filter function
{ {
[2] Guideline for Supportive Functions
Function Description
Dedicated home return
signal
When this function (signal) is used, home return can be
performed without using a complex sequence or an external
sensor, etc.
Brake control function Since the controller controls the brake, there is no need to
program a separate sequence.
Torque limiting function The torque can be limited (a desired limit can be set by a parameter)
using an external signal. When the torque reaches the specified level,
a signal will be output. This function (signal) permits pressing and
press fitting operations.
Position-command primary
filter function
Soft start and stop can be achieved even when the actuator is
operated in the command-pulse input mode where acceleration and
deceleration are not considered.