Instructions

Detailed descriptions of I/O modules | Analogue input module UR20-4AI-RTD-DIAG
199Manual u-remote1432790000/03/02.2014
4AI-RTD
Module status LED
Green: Communication over the system bus
Red: Collective error diagnostic
1.1
Red: Signal at input 0 outside the permissible range, line break or
short-circuit
2.1
Red: Signal at input 1 outside the permissible range, line break or
short-circuit
3.1
Red: Signal at input 2 outside the permissible range, line break or
short-circuit
4.1
Red: Signal at input 3 outside the permissible range, line break or
short-circuit
LEDindicatorsUR20-4AI-RTD-DIAG,errormessagesseeChapter13
DC
DC
MUX
System
bus
U
SYS
U
IN
U
OUT
µC µC
A
D
UR20 4AI-RTD-DIAG
RTD_1 +
Sense1 +
Sense1 –
RTD_1 –
RTD_0 +
Sense0 +
Sense0 –
RTD_0 –
RTD_2 +
Sense2 +
Sense2 –
RTD_2 –
RTD_3 +
Sense3 +
Sense3 –
RTD_3 –
1
2
3
4
BlockdiagramUR20-4AI-RTD-DIAG