Rockwell Automation 900-TC32 Digital Temperature Controllers, Series B - Manual (Page 282)

Publication 900-UM007D-EN-E - January 2011
5-54 Parameter Functions & Definitions
Set Point Upper-Limit,
Set Point Lower-Limit
Function: These parameters allow you to configure the maximum allowable
range for an operator to enter the set point value. The SP can be configured
within the range defined by the Upper- and Lower-Limit values in the Set
Point Upper-Limit and Set Point Lower-Limit parameters. If an attempt is
made to enter a SP value outside the upper or Lower-Limit from the keypad
the set point display will flash at the configured maximum upper- or
Lower-Limit value.
If the temperature Input Type or temperature units are changed, the set point
Upper-Limit and set point Lower-Limit are forcibly changed by the controller
to the default Upper- and Lower-Limits of the newly configured sensor.
For a temperature input, the decimal point position is dependent on the
currently selected sensor. For an analog input, it is dependent on the Decimal
Point parameter setting.
Related Parameters
• Input Type (page 5-50), Temperature Units (°C/°F) Selection (page
5-53) (Initial Setting function group)
Table 5.BJ — Controllers with Thermocouple/Resistance Thermometer Inputs
Parameter Input Type Configurable Range Units Default
Set Point
Upper-Limit Temperature SP Lower-Limit + 1 to Input
range Upper-Limit EU 1300
Millivolt SP Lower-Limit + 1 to scaling
Upper-Limit EU 100
Set Point
Lower-Limit Temperature Input range Lower-Limit to SP
Upper-Limit
− 1
EU
−200
Millivolt Scaling Lower-Limit to SP
Upper-Limit
− 1
EU 0
Table 5.BK — Controllers with Analog Inputs (900-TC8 & 900-TC16)
Parameter Configurable Range Units Default
Set Point Upper-Limit SP Lower-Limit + 1 to scaling
Upper-Limit EU 100
Set Point Lower-Limit Scaling Lower-Limit to SP
Upper-Limit
− 1
EU 0
sl-h
sl-l