Rockwell Automation Publication 857-UM002C-EN-P - February 2018
27
Configure the Base 857 Relay
Chapter 4
Analog Output Settings
Click External Analog Output in SetPointPS.
In the External Analog Output tab, you will find all of the analog output
settings within the quick setup screen. There are 16 possible analog output
channels. Only the first four are currently supported.
IMPORTANT
Some of the parameters are preset by the hardware configuration. Not all
fields need to be changed.
Table 10 - 857-RAD External Analog Outputs Parameter Setup
Parameter
Value
Explanation
Notes
AO enabled
ON
Analog output enabled
These will be the first four lines of the table.
OFF
Analog output not enabled
mA output
0…20
Analog output current in mA
Depends on the values set for the parameters mA Min, mA Max,
Linked Val. Min/Max and Modbus Min/Max parameters.
mA Min
User defined. See
Table 11 on page 28
for the
various measurands that can be linked to any
of the four analog outputs.
Minimum output current in mA
Depends on the values set for the parameters:
Linked Val. Min and Min Modbus.
Value set is related to Modbus Min by a ratio of 1:1000.
Typical Value: 0 mA
mA Max
User defined. See
Table 11 on page 28
for the
various measurands that can be linked to any
of the four analog outputs.
Maximum output current in mA
Depends on the values set for the parameters:
Linked Val. Max and Max Modbus.
Value set is related to Modbus Max by a ratio of 1:1000.
Typical value: 20 mA (maximum of 25 mA)
AO Link
See
Configure the 857-RAD Analog Outputs
on page 35
857’s analog input or measurement
relationship
This parameter directly linked to the mA output parameters. A
selection between 30 different measurements is available.
Summary of Contents for 857-RAA
Page 1: ...857 RAA 857 RAD RTD Scanner Catalog Numbers 857 RAA 857 RAD User Manual OriginalInstructions...
Page 6: ...6 Rockwell Automation Publication 857 UM002C EN P February 2018 Preface Notes...
Page 10: ...10 Rockwell Automation Publication 857 UM002C EN P February 2018 Chapter 1 Layout Notes...
Page 14: ...14 Rockwell Automation Publication 857 UM002C EN P February 2018 Chapter 2 Application Notes...
Page 41: ......
