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Visit www.ppiindia.net for technical notes on ALARM for detailed understanding of the parameters / terminologies
used for describing the Alarm parameters in this section.
The parameters required for configuring Alarms are grouped on PAGE-10. The configuration includes selecting the type of
Alarm, setting the hysteresis value, enabling/disabling start-up Alarm suppression, etc. Refer Table 4.1 for parameter
description & settings.
ALARM PARAMETERS
Table:4.1
User Manual
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Parameter Description
Settings
(Default Value)
None
Process Low
Process High
(Default :
)
None
Min. to Max. Range
specified for the
selected Input Type
(Default : Min or Max Range)
1 to 999 or
0.1 to 999.9
(Default : 2.0)
(Default : Normal)
Reverse
Normal
ALARM-1 TYPE
Select the Alarm-1 activation type. Selecting ‘None’ will disable
the alarm and suppress all the related parameters for Alarm-1.
ALARM-1 SETPOINT
Sets the Process High or Process Low limit for Alarm-1.
ALARM-1 HYSTERESIS
Sets differential (dead) band between Alarm-1 ON and OFF
states.
ALARM-1 INHIBIT
Set to Yes to suppress Alarm-1 activation upon power-up (process
start-up) condition.
ALARM-1 LOGIC
Select ‘Normal’ if Alarm-1 relay is to activate an Audio / Visual
alarm. Select ‘Reverse’ for Tripping (cut-off) the system.
ALARM LATCH
No
The Relay switches ON/OFF with Alarm switching.
Yes
The Relay Output switches (ON for Normal Logic / OFF for
Reverse Logic) upon Alarm activation. However, Alarm de-
activation does not affect the Relay status. The Relay status can
only be regained by pressing ‘Acknowledge-key’ provided the
Alarm has de-activated.
No
Yes
(Default :Yes)
No
Yes
(Default :No)
Section 4
