Rockwell Automation 900-TC32 Digital Temperature Controllers, Series B - Manual (Page 255)

Publication 900-UM007D-EN-E - January 2011
Parameter Functions & Definitions 5-27
Table 5.AB
Note:
• Not all controllers support heater current monitor and heater
burnout/short (refer to Tables 1.B and 1.E).
• If a heater fault (open/short or overcurrent) 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 or overcurrent detection 1 Alarm condition is
detected the HA indicator will light, and the value will flash on the No. 1
display.
Related Parameters
Refer to the Advanced Setting function group:
• Heater Burnout Detection 1, Heater Burnout Detection 2 (page 5-30)
• HB ON/OFF (page 5-74)
• Heater overcurrent detection 1, Heater overcurrent detection 2 (page
5-26)
• Heater overcurrent use (page 5-99)
• Error displays
ct1
: (page 5-30)
Heater Current 1 Value Monitor
(900-TC8, 900-TC16)
Conditions of Use: Heater burnout, heater short, and heater overcurrent
detection must be supported (two CTs). Alarm 1 must be assigned. The Heater
Burnout ON/OFF or Heater Overcurrent Use parameter must be set to ON.
Function: This parameter measures the heater current from the CT input
used for detecting heater burnout.
This parameter measures and displays the heater current value
Monitoring Range Units
0.0…55.0 A (Amps)
ct2