Omron DDAA1000/SRM manual Analog Operation, Point-to-Point Analog System, Supply loop power

DDAA1000/SRM User Guide

Analog Operation

Specifications

1.This unit does not provide loop power to devices.

2.The outputs can operate on loops with a maximum total resistance of 300 ohms.

3.The resolution of this unit is 8 bits with accuracy of 2%.

4.All inputs use a common ground connection labeled “G”.

5.This system is not designed to replace PLCs.

6.It is not recommended to use this product with PLC applications.

7.The input signal must be a 4-20 mA signal.

Point-to-Point Analog System

These units are bi-directional, they send and receive analog information both directions. The following is a common example of analog use for the DDAA1000/SRM units. Again, the Master’s input corresponds to the same numbered output on the Remote and vice versa. The 8 Master inputs match the 8 Remote outputs and the 8 Remote inputs match the 8 Master outputs.

Figure 6: Point-to-Point Analog Example

Master

Remote

Pwr

4-20mA Input 4-20mA Output

G 1 2 3 4 5 6 7 8 G 1 2 3 4 5 6 7 8

Sensor	Note: A loop power supply may be
with 4 -20 mA
	needed. The DDAA1000 unites do not
Output
	supply loop power.

Pwr

4-20mA Input

G 1 2 3 4 5 6 7 8

4-20mA Output

G 1 2 3 4 5 6 7 8

13.7

mA

mA

8 DATA-LINC GROUP

PN 161-09981-002C

rev 8/04