Rockwell Automation 900-TC32 Digital Temperature Controllers, Series B - Manual (Page 125)

Publication 900-UM007D-EN-E - January 2011
Configuration & Basic Operation 3-55
Figure 3.106 — Heater Burnout Detection
Heater Burnout Alarm (HBA) Setup
To activate the Heater Burnout Alarm (HBA), configure:
1. the Heater Burnout (HB) ON/OFF parameter to ON in the Advanced
Setting function group, and
2. the Heater Burnout Detection 1 and Heater Burnout Detection 2
parameters in the Adjustment function group.
EXAMPLE
Operating Procedure: Moving to the Advanced Setting Function Group
In this example configure the Heater Burnout Detection 1 parameter to 2.5.
The Heater Burnout Detection parameter setting is already ON by default, so
set the Heater Burnout Detection 1 parameter.
CT
CT
Load
200 V
10 A
→
10 A
→
200 V
200 V
Load
CT
CT
Load
200 V
5 A →
5 A
→
200 V
200 V
Load
Burnout
To CT input To CT input
Current when there is a burnout = 10 A × (1/2) = 5 A
Burnout
Current when there is a burnout = 0 A
To CT Controller input To CT Controller input