<Toc>
<6. Parameters>
6-13
IM 05E01B02-41E
1st Edition : May 31,2000-00
●
Alarm-related Parameters
Located in: Main menu =
PARA
; Submenu =
ALM
Instrument alarm-1
type
Instrument alarm-2
type
Instrument alarm-3
type
Instrument alarm-4
type
OFF (0), 1 to 20, 25 to 31
1: PV high limit (energized, no stand-by action)
2: PV low limit (energized, no stand-by action)
3: Deviation high limit (energized, no stand-by action)
4: Deviation low limit (energized, no stand-by action)
5: Deviation high limit (de-energized, no stand-by action)
6: Deviation low limit (de-energized, no stand-by action)
For other alarm types, see the next page.
1
0.5%
2
1
2
Parameter
Symbol
Name of Parameter
Setting Range and Description
Initial Value
User
Setting
Target Item
in CD-ROM
Ref.3.4(3)
Ref.3.4(5)
Ref.3.4(1)
Ref.3.4(3)
Ref.3.4(2)
AL1
AL2
AL3
AL4
PV event 1 hysteresis
PV event 2 hysteresis
PV event 3 hysteresis
PV event 4 hysteresis
Allows margins to be set for a PV event setpoint.
With the hysteresis settings, it is possible to prevent relays from chattering.
0
Allows the instrument alarm function to be enabled or disabled
according to the operating condition.
0: Always active
1: Not active when in RESET mode
2: Not active when in RESET mode or manual operation
Alarm mode
PEH1
PEH4
AMD
PEH2
PEH3
Instrument alarm-1
hysteresis
Instrument alarm-2
hysteresis
Instrument alarm-3
hysteresis
Instrument alarm-4
hysteresis
0.5% of PV
input range
span
Output
alarm: 0.5%
HY1
HY4
HY2
HY3
PV event 5 hysteresis
PV event 6 hysteresis
PV event 7 hysteresis
PV event 8 hysteresis
PEH5
PEH8
PEH6
PEH7
0.0 to 100.0%
Point of ON/OFF action
(PV event setpoint)
Hysteresis
PV value
Output
Hysteresis for PV high limit alarm
On
Off
Point of ON/OFF action
(Alarm setpoint)
Hysteresis
PV value
Output
Hysteresis for PV high limit alarm
On
Off
0.0 to 100.0% of PV input range span
Output alarm: 0.0 to 100.0%
Allows margins to be set for an alarm setpoint.
With the hysteresis settings, it is possible to prevent relays from chattering.
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