Troubleshooting; Introduction; Led Indication By Errors - Honeywell TC4S User Manual

7.1

Introduction

This chapter describes diagnostics and corrective measures in case if any trouble occurs
during the use of 2MLF-TC4S.
7.2

LED indication by errors

2MLF-TC4S has two LEDs and it is possible to check whether it has any error with the
indication of RUN LED and ALM LED.
Item
RUN LED
ALM LED
Operation
Management
R200 Isolated Thermocouple Input Module TC4S User's Guide
September 2010

7. Troubleshooting

Normal Disconnection
ON ON
Flicker every
OFF
second
Normal
Normal
operation
operation
Every
Every function
function
works
works
- -
Honeywell
Abnormal Module offset/gain
module backup error
H/W (memory checksum if
(error) powered on)
Flicker
every Flicker every 1s
0.2s
OFF OFF
Module
Normal operation
function
Every function works
stops
Try to power on again
Customer and if it still shows
service error,customer
service is needed
107