Rockwell Automation 900-TC32 Digital Temperature Controllers, Series B User Manual
Page 256
Publication 900-UM007D-EN-E - January 2011
5-28
Parameter Functions & Definitions
Note:
If the Heater burnout or heater overcurrent fault is less than or equal to
100 ms it is not detected.
•
ffff
is displayed when 55.0 A is exceeded.
• If a heater burnout detection 2 or heater overcurrent detection 2 alarm
is output, the HA indicator will light and the No. 1 display for the heater
current 2 value monitor will flash.
Related Parameters
• Heater Burnout Detection 1, Heater Burnout Detection 2 (Adjustment
function group, page 5-30)
• HB ON/OFF (Advanced Setting function group, page 5-74)
• Heater overcurrent detection 1, Heater overcurrent detection 2
(Adjustment function group, page 5-30)
• Heater overcurrent use (Advanced Setting function group, page 5-99)
• Error Displays ct2: (page 5-30)
Leakage Current 1 Monitor (900-TC8, 900-TC16)
Conditions of Use:
Heater Burnout, (HBA) Heater Short (HSA) and Heater
Overcurrent detection must be supported. Alarm 1 must be assigned. The HS
Alarm parameter must be set to ON.
Function:
This parameter measures the heater current from a single CT input
used for detecting a short-circuit condition.
This parameter measures and displays the heater current when the heater is
directed to be OFF by the controller.
Note:
A Heater Short (HS) fault condition is not detected if its duration is 100
ms or less.
Table 5.AC
Monitoring Range
Units
0.0…55.0
A (Amps)
lcr1