Omron E5EX-H, Manual

Page: 7 / 16

E5EX–H E5EX–H
7
Alarm Mode Selector (SW205: ALM)
An alarm mode selector is provided. Ten alarm modes, listed in the following table, can be selected using this switch. The switch is set to position
2 before shipment, i.e., the upper-limit alarm mode.
Switch Mode (SW205) Alarm output Setting range
setting Alarm operation Display
0 Alarm No display OFF –––
1 Upper- and lower-limit
alarms
)--(
X X
SP
Thermocouple: 0
°
to
9,999
°
Platinum resistance
thermometer: 0
°
to
999.9
°
2 Upper-limit alarm
---(
X (See Note 1.)
Thermocouple: –999
°
to
9,999
°
3 Lower-limit alarm
)ĆĆ---
X Platinum resistance
thermometer: –99.9
°
to
999.9
°
4 Upper- and lower-limit
range alarm
-()-
X X Thermocouple: 0
°
to
9,999
°
5 Inverse upper- and
lower-limit alarm with
standby sequence
3--e
X X
Platinum resistance
thermometer: 0
°
to
999.9
°
6 Upper-limit alarm with
standby sequence
---e
X (See Note 1.)
Thermocouple: –999
°
to
9,999
°
7 Lower-limit alarm with
standby sequence
3---
X Platinum resistance
thermometer: –99.9
°
to
999.9
°
8 Event alarm
1--(
Y
0
9 Proportional alarm
pro
See Note 2.
Note: 1. If a negative value is set as X, operation will be as follows:
Lower-limit alarm
Upper-limit alarm
Proportional alarm
X
X
X
SP
SP
SP
2. The alarm mode selector can be used to select the proportional alarm mode. The proportional alarm function is initiated when the
temperature reaches the set alarm point (A in the figure below), which is the lower limit of a proportional band. When the tempera-
ture rises to the upper limit of the proportional band (point B in the figure), the alarm output is turned ON. This alarm function is
convenient when the main setting is used for heating control, while the proportional alarm function is used for cooling control, so that
heating and cooling control actions can be easily performed.
PB: proportional band (fixed to 42
°
C)
Proportional period is 20 seconds.
The operation of the alarm is not affected by pin
2 of the operating mode selector (SW201).
X
PB
A
B
ON
SP