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Auxiliary i/o, Table 43 - aux assignments, Aux# a – Rockwell Automation 825-P Modular Protection System for Motors User Manual User Manual

Page 96: Aux# b, Aux# c, Overload, Undercurrent, Current imbalance, Short circuit, Rtd (winding/bearing)

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96

Rockwell Automation Publication 825-UM004D-EN-P - November 2012

Chapter 6 Configuring Protection & Logic Functions

The 825-P allows mapping of protection trip elements to the trip output.
Table 42 shows the method of mapping elements using Relay Word bits
associated with elements. Select 1 for each element you want to map using the
TRIPA through TRIPD settings. The relay will OR them together to drive the
Trip output. A logical “OR” describes when any one assigned element asserts,

the Trip relay will operate.

Auxiliary I/O

Table 43 - Aux Assignments

Setting Prompt

0

1

2

3

4

5

6

7

Description

Aux# A

X

Overload

X

Undercurrent

X

Jam

X

Current Imbalance

X

Short Circuit

X

RTD (Winding/Bearing)

X

PTC

X

Ground Fault (Residual)

Aux# B

X

VAR

X

Underpower

X

Undervoltage

X

Overvoltage

X

Phase Reversal

X

Power Factor

X

Speed Switch

X

Ground Fault (Core Balance)

Aux# C

X

Start Time

X

Frequency 1

X

Frequency 2

X

RTD (Other)

X

RTD (Ambient)

X

PTC Error

X

RTD Error

X

MCM Error