48 Chromalox 2104 Technical Manual
Alarm Types Each of the alarms can be set up for the following
alarm types:
High Alarm—Absolute Temperature Alarm
Low Alarm—Absolute Temperature Alarm
High/Low Alarm—Absolute Temperature Alarm
+Deviation Alarm—Setpoint Tracking Alarm
-Deviation Alarm—Setpoint Tracking Alarm
±Deviation Alarm—Setpoint Tracking Alarm
Control Loop Protection Alarm—System Alarm
(see page 53 for detailed information)
The Absolute Temperature Alarms are set to a
specific value; i.e. if the High Alarm is set for 100°F,
the alarm will turn on at 100°F. The Deviation
Alarms, or Setpoint Tracking Alarms, track the
process setpoint. If the Alarm = 5°F and the setpoint
is 70°F, the Alarm will energize at 75°F.
HH
HH
H
II
II
I
LL
LL
L
OO
OO
O
HH
HH
H
II
II
I
LL
LL
L
OO
OO
O
PP
PP
P
DD
DD
D
EE
EE
E
--
--
-
DD
DD
D
EE
EE
E
DD
DD
D
EE
EE
E
LL
LL
L
OOOO
OOOO
OO
PP
PP
P
Alarm
Inhibit
When enabled, the Alarm Inhibit feature prevents
false alarms during initial powerup. For example, the
low alarm will not be set until after the process
temperature has initially reached setpoint. Alarm
Inhibit is adjustable for each alarm output.
INH3INH3
INH3INH3
INH3
O O
O O
O
NN
NN
N
AUX ▲▼
RESET
Alarm
Wiring
Wiring instructions for Outputs #3, #4 and #5 are
given on pages 19-20.