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...1.2 Use of Function Keys
E – Alarm Acknowledgement
450. 2
500. 0
70
450. 2
500. 0
70
Note. If no alarms have been enabled in the Set Up level, pressing
the
key has no effect.
1
The first active and unacknowledged alarm is displayed
(or if no alarms are active, the first enabled alarm is displayed)
HPV
LPV
HLP
LLP
Hd
Ld
HP1
LP1
HP2
LP2
HP3
LP3
2
The lower display shows alarm status:
ACt
ACK
CLr
LAt
3
Pressing
Lower display changes to reflect new status.
4
Next active and unacknowledged alarm is displayed. If no alarms
are active, the next enabled alarm is displayed.
(Flashing)
Any active,
unacknowledged
alarms
1. H P1
1
200. 3
ACt
2
or
ACK
CLr
LAt
High Process, PV
Low Process, PV
High Latch, PV
Low Latch, PV
High Deviation
Low Deviation
High Process I/P1
Low Process I/P1
High Process I/P2
Low Process I/P2
High Process I/P3
Low Process I/P3
Alarm active and unacknowledged
Alarm active and acknowledged
Cleared or Inactive alarm
Unacknowledged latched alarm
again acknowledges the displayed alarm.
Fig. 1.2b Use of Function Keys
1 DISPLAYS AND FUNCTION KEYS...
(On continuously)
All active
alarms
alarms present
acknowledged
1HP1
2003
ACK
3
or
LAt
Unacknowledged
alarms only
High Output
HO
Low Output
LO
Power Failure Time
PF. t
Maths Block 1 High
Hb1
Maths Block 1 Low
Lb1
Maths Block 2 High
Hb2
Maths Block 2 Low
Lb2
Maths Block 3 High
Hb3
Maths Block 3 Low
Lb3
Maths Block 4 High
Hb4
Maths Block 4 Low
Lb4
Note. The time of the power failure
PF. t , is shown in the set point display.
(Off)
No active
4
2. x xx
200. 3
ACt
5
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