Rockwell Automation 900-TC32 Digital Temperature Controllers, Series B User Manual

Page 239

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Publication 900-UM007D-EN-E - January 2011

Parameter Functions & Definitions

5-11

Function:

This parameter allows you to monitor the value of the Set Point

during a SP Ramp function.

Ramp is a function for restricting the amount the set point can change, from
the current value to a new value, as a rate of change.

The currently configured value is displayed when using the SP Ramp Set Value
parameter in the Advanced Setting function group.

When not in ramp operation, the set point is the same as the set point
displayed in the PV/SP parameter.

Related Parameters

• PV/SP (Operation function group, page 5-8)
• SP Ramp Set Value (Adjustment function group, page 5-41)
• Set Point Upper-Limit, Set Point Lower-Limit (Initial Setting function

group, page 5-54

Heater Current 1 Value Monitor
(900-TC8 &900-TC16)

Conditions of Use:

Heater Burnout (HBA), Heater Short (HSA) and Heater

Overcurrent (HOA) alarms must be supported and one CTs wired to the
controller. Alarm 1 must be assigned. The Heater Burnout Detection or
Heater Overcurrent Use parameter must be set to ON. CT Number 1 must be
wired to the controller.

Function:

This parameter measures the heater current from a single CT input

used for detecting heater alarm conditions in 1-phase heaters and displays the
value on the controller.

• Heater burnout, heater short, and heater overcurrent conditions are not

detected if the Control Output (heating) ON time is 100 ms or less.

Table 5.L

Monitoring Range

Units

SP: Set Point Lower-Limit to Set Point Upper-Limit

EU

ct1

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