12.1
Alarm Mode
:
SV
:
Alarm set value
X
:
1 / 2 / 3 (There are up to 3 sets of alarms)
ALD
X
Alarm mode
Description
0
No alarm function
Not drive any alarm relays and the corresponding LED lamp.
HYSX
ON
Deviation high
OFF
1
SV
ALX
(With hold action)
PV
≥
(SV+ALX) → Alarm ON
Formula
PV
≤
(SV+ALX-HYSA) → Alarm OFF
ON
HYSX
Deviation low
OFF
2
ALX
SV
(With hold action)
*
ALX must to be set to a negative value
Formula
PV
≤
(SV+ALX) → Alarm ON
PV
≥
(SV+ALX+HYSA) → Alarm OFF
OFF
ON
HYSX
HYSX
ON
3
Deviation high/low
ALX
SV
ALX
(With hold action)
PV
≥
(SV+ALX) → Alarm ON
Formula
PV
≤
(SV-ALX) → Alarm ON
PV
≥
(SV-ALX+HYSA) → Alarm OFF
PV
≤
(SV+ALX-HYSA) → Alarm OFF
ON
OFF
OFF
Band
ALX
SV
ALX
4
(With hold action)
PV
≤
(SV+ALX) → Alarm ON
Formula
PV
>
(SV-ALX) → Alarm ON
PV
≥
(SV+ALX) → Alarm OFF
PV
<
(SV-ALX) → Alarm OFF
HYSX
ON
Process high
5
OFF
(With hold action)
ALX
Formula
PV
≥
ALX→ Alarm ON
PV
≤
(ALX-HYSA) → Alarm OFF
ON
HYSX
Process low
6
ALX
OFF
(With hold action)
Formula
PV
≤
ALX→ Alarm ON
PV
≥
(ALX+HYSA) → Alarm OFF
7
Segment execute alarm
When SEG=ALX alarm ON
*
This mode only available in program type controller
8
System error
The Alert action, when PV displays error message
Activated conditions
:
1. Heater current is less the HBAC set value
HBA
2. OUT1 manipulated value exceed 90%
3. Conditions of 1 & 2 above are established and continue to
(Heater Break Alarm)
exceed 20 seconds.
9
*
Please refer to Chapter 11.4
*
This mode only available in ALD1 or ALD2
Single RAMP
Please refer to Chapter 11.7
This mode only available in ALD3
FY/FU operation manual
44