Omron CS1W-CRM21 - Design and Operating Procedure Examples; Design

21
Design and Operating Procedure Examples Section 1-6
1-6 Design and Operating Procedure Examples
1-6-1 Design
I/O Capacity Establish the I/O correspondences for each Slave Unit. Determine how many
Word and Bit Slave Units are to be connected, and calculate the current con-
sumption for the communications power supply.
■ Units Used
Note (1) Refer to the CRT1-series CompoNet Slave Units and Repeater Unit Op-
eration Manual (Cat. No. W456) for the current consumption of the Slave
Units.
(2) When Bit Slave Units are used, the current consumption of the Bit Slave
Units and the external I/O, such as sensors and actuators, is supplied
from the communications power supply that is connected to the Master
Unit through the Flat Cable. Therefore, the current consumption of the fol-
lowing external I/O must be added to the total power consumption.
Sensor current consumption
× 2, actuator current consumption × 2
Word Slave Units
× 3 nodes, Bit Slave Units × 3 nodes
At the same time, provide a 24-VDC power supply with an output current
of at least 0.9 A for the communications power supply.
■ Required Peripheral Devices
I/O capacity Slave Unit type Model (specifications) Number of Units Current consumption (See note 1.)
16 inputs Word Slave Units CRT1-ID16 (16 DC inputs,
NPN)
1 85 mA
16 inputs and
8 outputs
CRT1-ID16 (16 DC inputs,
NPN) + XWT-OD08 (8 tran-
sistor outputs, NPN)
1 of each 85 mA + 5 mA = 90 mA
16 outputs CRT1-OD16 (16 transistor
outputs, NPN)
1 85 mA
2 inputs × 2 Bit Slave Units CRT1B-ID02S (2 DC inputs,
sensor connector type,
NPN)
2 80 mA + I/O current consumption 76
mA (Sensor example: 35 mA × 2 +
input current 3 mA × 2) (See note 2.)
Note The total for two Units is 160
mA + 152 mA.
2 outputs CRT1B-OD02S (2 transistor
outputs, sensor connector
type, NPN)
1 75 mA + I/O current consumption 160
mA (actuator)
Example: 80 mA × 2 (See note 2.)
Total 495 mA + 312 mA for I/O = 807 mA
Specifications Model Quantity Remarks
Flat Connector Socket DCN4-TR4 7 Order in units of ten.
Flat Connector Plug DCN4-BR4 10 Order in units of ten.
Terminating Resistor DCN4-TM4 1 Order in units of ten.
Flat Cable I DCA4-4F10 1 Order in increments of 100 m.
Special Tool (Pliers) DWT-A01 1 ---