Rockwell Automation 900-TC32 Digital Temperature Controllers, Series B - Manual (Page 114)

Publication 900-UM007D-EN-E - January 2011
3-44 Configuration & Basic Operation
Alarm Value
Figure 3.86
Alarm types can be configured independently for each Alarm 1 to 3 in the
Initial Setting function group. The default is 2 (Upper Limit Alarm.)
Alarm values are indicated by X in Table 3.M. When the Upper- and
Lower-Limit values are set independently, H is displayed for the Upper-Limit
value, and L is displayed for the Lower-Limit value.
To set alarm deviation, use the Upper- and Lower-Limit Alarm parameters. Set
the Upper- and Lower-Limits in each of the Alarm Upper-Limit 1 to 3 and
Alarm Lower-Limit 1 to 3 parameters (Operation function group).
EXAMPLE
Operation Procedure
In this example, Alarm 1 will be set to the Upper-Limit alarm. The following
shows related parameters and setups. In this example, the alarm output is
active when the set point is exceeded by 10
°C. (Temperature units in this
example is
°C.)
Parameters to configure:
Alarm 1 Type = 2: Upper-Limit alarm (deviation)
Alarm Value 1 = 10 (10
° greater than SP)
Lower-limit
alarm value
Upper-limit
alarm value
Alarm value