Omron NX-ILM400, Руководство пользователя

Страница: 89 / 176

4 - 31
4 Installation and Wiring
NX-series IO-Link Master Unit User’s Manual (W567)
4-5
W
irin
g
Precaut
ion
s
4
4-
5-1 Wiring Precautions for SIO (DI
) Mode
4-5 Wiring Precautions
An incorrect input may occur due to sensor inrush current if a sensor is turned ON after the DC Input
Unit has started up to the point where inputs are possible.
Determine the time required for sensor operation to stabilize after the sensor is turned ON and take
appropriate measures, such as inserting an ON delay into the user program after turning ON the
sensor.
A programming example is shown below.
The sensor's power supply voltage is used as the input bit to Sensor_power .
A 100-ms timer delay (the time required for an OMRON Proximity Sensor to stabilize) is created in
the user program.
After the timer changes to TRUE, input bit X causes the output Output to change to TRUE after the
input of the sensor changes to TRUE.
When the communications mode of an IO-Link Master Unit port is set to SIO (DO) Mode, a push-pull
output is used to increase the speed of the output ON/OFF response.
When the communications mode of an IO-Link Master Unit port is set to SIO (DO) Mode, use the same
load power supply for the I/O power supply and the connected external device.
If different power supplies are used, the current may flow into the output bit via the diode built into the
I/O circuit and cause the IO-Link Master Unit to malfunction.
4-5-1 Wiring Precautions for SIO (DI) Mode
Precautions on Sensor Surge Current
4-5-2 Wiring Precautions for SIO (DO) Mode
Push-pull Outputs
TON
T#100ms
X Output
Sensor_power