OPERATION MANUAL CompoBus/S

Application Precautions Section 5-12
5-12-2 Sensor Inrush Current
Specifications of each Slave
The following table shows specifications of each Slave: The ON voltage, residual
voltage, input impedance, and OFF current.
Model ON voltage (V ON) Residual voltage
(V F )
Input impedance
(R IN )
SRT@-ID04/08/16 (-1) 15 V 2.5 V (See note.) 4.7 kΩ 1.0 mA
SRT@-ID16T/MD16T (-1) 15 V 1.5 V 4.4 kΩ 1.0 mA
SRT2-VID08S (-1) 15 V 1.5 V 4.4 kΩ 1.0 mA
SRT2-VID16ML (-1) 15 V 1.5 V 4.4 kΩ 1.0 mA
SRT2-ID32ML (-1) 15 V 1.5 V 4.4 kΩ 1.0 mA
SRT2-MD32ML (-1) 15 V 1.5 V 4.4 kΩ 1.0 mA
SRT@-ID08S 12 V 4.5 V (See note.) 2.7 kΩ 1.0 mA
SRT@-ND08S 12 V 4.5 V (See note.) 2.7 kΩ 1.0 mA
SRT2-ID04CL (-1) 15 V 1.5 V 4.4 kΩ 1.0 mA
SRT2-ID08CL (-1) 15 V 1.5 V 4.4 kΩ 1.0 mA
OFF current (I OUT)
Note The value includes the voltage drop resulting from the LEDs and diodes.
When the sensor ready to input is turned ON after the PLC is turned ON and
the internal power supply of a Slave is turned ON, the wrong signal may be
input from the sensor due to the inrush current of the sensor. Check the
period between the moment the sensor is turned ON and the moment the
operation of the sensor has become stable. Then program a timer delay after
the sensor is turned ON.
Program example
00000
TIM000 00001
1,2,3... 1. Set input bit IR 00000 to the sensor power supply voltage.
2. Insert a timer delay for the stabilization of the sensor. The delay will be
100 ms if OMRON’s Proximity Sensor is used.
3. After the timer is ON, sensor input to input bit IR 00001 is accepted and
output bit IR 00100 will be ON.
TIM
000
#0001
00100
351