Woodward LS-5 v2 Series - System a Overvoltage (Level 1 & 2) ANSI# 59

This value refers to the System rated
frequency (parameter 1750).
2905
2911
Delay
(Limit 1/Limit 2)
2 0.02 to 99.99 s
2905: [1.50 s]
2911: [0.06 s]
If the monitored frequency value falls
below the threshold value for the
delay time con󰈡gured here, an alarm
will be issued.
Notes
If the monitored frequency falls below
the threshold (plus the hysteresis)
before the delay expires the time will
be reset.
2901
2907
Alarm class
(Limit 1/Limit 2)
2 Class A/B/C/D/E/F/Control
2901: [A]
2907: [B]
Each limit may be assigned an
independent alarm class that speci󰈡es
what action should be taken when the
limit is surpassed.
Notes
For additional information refer to ╚═▷
“9.4.1 Alarm Classes”
2902
2908
Self acknowledge
(Limit 1/Limit 2)
2 Yes The control unit automatically clears
the alarm if the fault condition is no
longer detected.
[No] The control unit does not
automatically reset the alarm when
the fault condition is no longer
detected.
The alarm must be acknowledged and
reset by manually pressing the
appropriate buttons or by activating
the LogicsManager output "External
acknowledgement" (via a discrete
input or via an interface).
2903
2909
Monitoring lockable 2 [Yes] Monitoring for fault conditions is only
performed if "Lock Monitoring Status
24.40" is false.
No Monitoring for this fault condition is
continuously enabled regardless of
"Lock Monitoring Status 24.40".
4.3.1.7 System A Overvoltage (Level 1 & 2) ANSI# 59
General notes
Voltage is monitored depending on parameter "SyA. voltage measuring" (parameter
1851). There are two overvoltage alarm levels available in the control. Both alarms are
de󰈡nite time alarms and are illustrated in the 󰈡gure below. The 󰈡gure diagrams a
frequency trend and the associated pickup times and length of the alarms. Monitoring of
the voltage is done in two steps.
106 LS-5 v2 Series 37650
4 Con󰈡guration
4.3 Con󰈡gure Monitoring
Released