The Alarm Parameters are grouped on Flow Alarm Page. The FLOREX is provided with 2 independent “soft” alarms, that is,
the alarms can be set and generated even if the corresponding output modules are not fitted or assigned to other function. The
front panel indicators AL1 and AL2 for RATE indicate the alarm statuses. The alarm statuses are also available via digital
communication, if the communication module is fitted.
For the “Process Alarm” function, the FLOREX continuously compares the measured Flow Rate with the ‘Flow Alarm
Setpoint’. An alarm signal is generated if the Flow Rate falls outside the set alarm limit(s). Also, if the output modules (Flow AL-
1 and Flow AL-2) are fitted, the Relay/SSR is energized under alarm condition and deenergized upon removal of the alarm
condition depending upon the ‘Alarm Logic’ selected. The alarm switching is separated by a settable value of ‘Alarm
Hysteresis’ to avoid fluctuations in alarm status near boundary conditions.
The Table 4.1 below lists the parameters followed by the definitions for each parameter.
FLOW ALARM PARAMETERS
User Manual
FLOREX
Parameter Description
Settings
(Default Value)
None
Process Low
Process High
(Default : None)
0 to 30000
(Default :
For Process Low: 0,
For Process High: 1000)
1 to 30000
(Default : 2)
No
Yes
(Default : No)
(Default : Normal)
Normal
Reverse
(Default : Disable)
Disable
Enable
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
(Available for Process High or Process Low Alarm-1 Type)
Sets Alarm limit independent of control setpoint.
ALARM-1 HYSTERESIS
Sets differential (dead) band between Alarm-1 switching ON and
OFF states.
ALARM-1 INHIBIT
Set to Yes to suppress Alarm-1 activation upon power-up or
process start-up.
ALARM-1 LOGIC
(Available if OP2 function is Alarm)
Select ‘Normal’ if Alarm-1 is to activate an Audio / Visual alarm.
Select ‘Reverse’ if Alarm-1 is to Trip the system.
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.
ALARM-1 LATCH
Select the Alarm-2 activation type. Selecting ‘None’ will disable
the alarm and suppress all the related parameters for Alarm-2.
ALARM-2 TYPE
None
Process Low
Process High
(Default : None)
14
Table 4.1
Section 4
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