Rockwell Automation 900-TC32 Digital Temperature Controllers, Series B - Manual (Page 112)

Publication 900-UM007D-EN-E - January 2011
3-42 Configuration & Basic Operation
Alarm Outputs Alarm Types
The Bulletin 900-TC8 supports up to three alarm outputs, Bulletin 900-TC16
supports two alarm outputs, and Bulletin 900-TC32 supports one alarm
output..
The controller alarm output conditions are determined by the combination of
the selected Alarm Type, Alarm Value, Alarm Hysteresis, and Set Point (SP)
parameters.
Alarm types are configured independently for each alarm output using the
Alarm 1 and Alarm 2 Type parameters (Initial Setting function group).
Note: The default Set Value is 2: Upper-Limit (deviation).
Configure the alarm type and alarm output operation based on pre-defined
conditions using the Set Value number.
Note: The following table describes the Alarm Type, Alarm Value,
Upper-Limit Alarm, and Lower-Limit Alarm parameters.
Table 3.N — Alarm Values
Set Value Alarm Type
Alarm Output Operation
When Alarm Value
X is Positive When Alarm Value
X is Negative
0 Alarm function OFF Output OFF
1 ➊ Upper- and Lower-Limit
(deviation range) ➋
2 Upper-limit (deviation)
3 Lower-limit (deviation)
4
➊
Upper- and Lower-Limit
range (deviation range)
➌
5 ➊➎ Upper- and Lower-Limit
with standby sequence
(deviation range) ➍
6 Upper-limit with standby
sequence (deviation)
7 Lower-limit with standby
sequence (deviation)
8 Absolute-value
Upper-Limit
L H
ON
OFF
SP
X
ON
OFF
SP
ON
OFF
SP
X
X
ON
OFF
SP
X
ON
OFF
SP
L H
ON
OFF
SP
L H
ON
OFF
SP
X
ON
OFF
SP
ON
OFF
SP
X
X
ON
OFF
SP
X
ON
OFF
SP
X
ON
OFF
0
X
ON
OFF
0