192
Initial Setting Level Section 5-7
(3) Set value: 4 (Lower limit range)
(4) Set value: 5 (Upper- and lower-limit with standby sequence)
• For the lower-limit alarms in cases 1 and 2 above, the alarm is normal-
ly OFF if upper- and lower-limit hysteresis overlaps.
• In case 3, the alarm is always OFF.
(5) Set value: 5 (The alarm is always OFF if upper- and lower-limit alarm hys-
teresis with standby sequence overlaps.)
• Set the alarm type independently for each alarm in the Alarm 1 to 3 Type
parameters in the initial setting level. The default is 2 (Upper-limit alarm).
■ Related Parameters
Alarm value 1: Page 156, Alarm value upper limit 1, Alarm value lower limit 1:
Page 158 (operation level)
Standby sequence reset: Page 202, Auxiliary output 1 open in alarm: Page
203, Alarm 1 latch: Page 208 (advanced function setting level), Alarm 1 hys-
teresis: Page 192 (initial setting level)
• These parameters set the hysteresis for alarms 1, 2, and 3.
Note Set “None” as the unit for analog inputs.
■ Related Parameters
Alarm value 1 to 3: Page 157, Alarm value upper limit 1 to 3, Alarm value
lower limit 1 to 3: Page 158 (operation level)
Alarm 1 to 3 type (initial setting level): Pages 191 to 193
LH
H < 0, L > 0
|H| < |L|
SP
HL
H > 0, L < 0
|H| > |L|
SP
LH
H < 0, L < 0
SP
L
L
H
H
H < 0, L > 0
|H| ≥ |L|
SP
SP
H > 0, L < 0
|H| ≤ |L|
Case 3 (Always OFF)
Case 2Case 1
See
See
alh1 Alarm 1 Hysteresis
Alarm 1 must be assigned.
The alarm 1 type must not be 0, 12,
or 13.
alh2 Alarm 2 Hysteresis
Alarm 2 must be assigned.
The alarm 2 type must not be 0, 12,
or 13.
alh3 Alarm 3 Hysteresis
Alarm 3 must be assigned.
The alarm 3 type must not be 0, 12,
or 13.
Models Setting range Unit Default
Model with thermocouple/resis-
tance thermometer universal
input
0.1 to 999.9 °C or °F
(See note.)
0.2
Model with analog Input 0.01 to 99.99 %FS 0.02
Function
Setting
See
See
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