Yokogawa JUXTA M Series Digital Limit Alarms MVTK - Manual (Page 4)

IM 77J04T31-01E 2nd Edition Feb. 09, 2007-00 4
8. SETTING ALARM-RELATED PARAMETERS
8.1 Setting Ranges and Factory-Set Values of Alarm-Related Parameters
The followings are the factory-set values for the range code No. 1.
They may differ depending on the range code No. specified at the time of order.
Alarm Action Type Code
Low-limit
alarm
setpoint
Power ON
PV
Time
Normal
Regarded
as normal Abnormal
(Alarm ON)
If an alarm type code with
stand-by action is set, alarm
action is turned off during the
start-up control.
This function is useful at power
ON or when changing the alarm
type.
Stand-by Action
Parameter Name Setting Range
Factory-Set
Value
Parameter
Symbol
2
Alarm-1 action
(AL1)
Within the instrument input range.
Setting range: 0 to 999 sec.
Setting resolution: 1 sec.
Setting range: 0 to 999 sec.
Setting resolution: 1 sec.
See the Alarm Action Type Codes table.
Alarm-2 action
(AL2)
1
Alarm-3 action
(AL3)
1
3
Alarm-4 action
(AL4)
Alamr-1 hysteresis
(HY1) The value resulting from adding a hysteresis value
to an alarm setpoint should be within the
instrument input range.
Within the instrument input range.
3
Alarm-2 hysteresis
(HY2)
3
Alarm-3 hysteresis
(HY3)
3
Alarm-4 hysteresis
(HY4)
0 Alarm ON delay
(OND)
0
Alarm OFF delay
(OFD)
Minimum
value of the
instrument
input range
Setpoint
(SP)
Parameter Name Setting Range
Factory-Set
Value
Parameter
Symbol
20
2 points of alarms: 80
4 points of alarms: 30
2 points of alarms: 1
4 points of alarms: 2
70
80
Setup Parameter Screen 1
Operation Parameter Screen
Deviation
low-limit
alarm
Deviation
high-limit
alarm
Deviation
high and
low-limit
alarm
Deviation
within high
and low-limit
alarm
PV high-limit
alarm
PV low-limit
alarm
De-
energized
under
Normal
Condition
(Parameters A1 to A4 are not displayed.)
Without Stand-by
Action
With Stand-by
Action
De-
energized
under
Normal
Condition Energized
under
Normal
Condition Energized
under
Normal
Condition
Hysteresis
Alarm
Alarm setpoint
Normal
PV
PV
PV
PV
PV
PV
Hysteresis
Normal
Alarm setpoint
Alarm
Hysteresis
Hysteresis
Hysteresis
Alarm
Setpoint Deviation setpoint
Normal
Hysteresis
Hysteresis
Hysteresis
Normal
Setpoint Deviation setpoint
Setpoint Deviation setpoint Deviation setpoint
Setpoint Deviation setpoint Deviation setpoint
Alarm
Alarm Normal Alarm
Alarm Normal Normal
Alarm Type
No alarm
Alarm Action
<Alarm Action Type Codes>
Alarm-1 setpoint
(A1)
Alarm-2 setpoint
(A2)
Alarm-3 setpoint
(A3)
Alarm-4 setpoint
(A4)
8.2 Setting Alarm Output-Related Parameters
This section describes an example of setting the alarm-1 action (AL1) to “12” (PV low-limit alarm,
with stand-by action), alarm-1 setpoint (A1) to “0” (
° C), alarm-1 hysteresis (HY1) to “5” ( ° C), alarm
ON delay (OND) to “5” (sec.) and alarm OFF delay (OFD) to “5” (sec.) with the range code No. (IN)
set to “2” (-60.0 to 600.0
° C). (Parameters relating to alarm 2 to alarm 4 can be set in the same way
as the procedure below.)
Press or
to display "12."
When the SET/ENT key is pressed for more than 3 sec.
with the Operation Parameter Screen displayed, the Setup
Parameter Screen 1 appears with parameter "AL1"
displayed.
When the power is turned on, the PV screen of the
Operation Parameter Screen appears.
Press the UP or DOWN key to display "5.0" ( ° C) on the
DATA display.
Press the SET/ENT key to accept alarm-1 hysteresis "5.0"
(
° C).
Press the SET/ENT key to display parameter "OND."
Press for more
than 3 sec.
Press .
This completes the process for
setting the alarm-1 hysteresis.
This completes the process for
setting the alarm-1 action.
This completes the process for
setting the alarm-1 setpoint.
The decimal point blinks during
data change.
Press the UP or DOWN key to display "5" (sec.) on the
DATA display.
Press the SET/ENT key to accept alarm ON delay "5"
(sec).
Press the SET/ENT key again to display parameter
"OFD."
The decimal point blinks during
data change.
The decimal point blinks during
data change.
The decimal point blinks during
data change.
Press the UP or DOWN key to display "5" (sec.) on the
DATA display.
Press the SET/ENT key to accept alarm OFF delay "5"
(sec).
Press the SET/ENT key for more than 3 sec.
This causes the Operation Parameter Screen to appear.
This completes the process for
setting the alarm OFF delay.
The decimal point blinks during
data change.
Press the UP or DOWN key to display "12" on the DATA
display.
Press the SET/ENT key to accept alarm-1 action "12."
Then to set the alarm setpoint, press the SET/ENT key for
more than 3 sec. to display the Operation Parameter
Screen. (To set the hysteresis parameter and successive
settings, press the SET/ENT key to display the next
parameter.)
Setup Parameter Screen 1
Setup Parameter Screen 1
Operation Parameter Screen
Press the SET/ENT key to display parameter "A1."
Press the UP or DOWN key to display a low-limit alarm
value "0.0" (
° C) that is set to the DATA display.
Press the SET/ENT key to accept low-limit alarm "0.0"
(
° C).
Operation Parameter Screen
To the Operation Parameter Screen
Power ON
Step 2
Setting the alarm action
Setting the alarm setpoint
Setting the hysteresis
Setting the alarm ON delay
Setting the alarm OFF delay
Press this key for
more than 3 sec.
Press to display "A1."
Press or
to display "0.0."
Press .
Press to
display "OND."
Press .
Press or
to display "5.0."
Press or
to display "5."
Press .
Press .
Press or
to display "5."
Press .
Press for more
than 3 sec.
This completes the process for
setting the alarm ON delay.
9. INPUT ADJUSTMENTS
9.1 Setting Ranges and Factory-Set Values of Adjustment-Related Parameters
Setup Parameter Screen 2
OFF (0) or ON (1)
(This parameter is used (set to ON) to reset adjusted values.)
Ϯ 10% of the instrument input range span (and BL < BH)
Ϯ 10% of the instrument input range span (and AL < AH)
Ϯ 10% of the instrument input range span (and BL < BH)
Ϯ 10% of the instrument input range span (and AL < AH)
Parameter Name Setting Range
Factory-Set
Value
Parameter
Symbol
OFF
Minimum value of
the instrument
input range
Minimum value of
the instrument
input range
Maximum value of
the instrument
input range
Maximum value of
the instrument
input range
Input adjustment reset
(RST)
Input adjustment point
LOW (BL)
Input adjustment
LOW (AL)
Input adjustment point
HIGH (BH)
Input adjustment
HIGH (AH)