Woodward LS-5 v2 Series - System a Undervoltage (Level 1 & 2) ANSI# 27

Notes
For additional information refer to ╚═▷
“9.4.1 Alarm Classes”
2953
2959
Self acknowledge
(Limit 1/Limit2)
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).
2953
2959
Monitoring lockable
(Limit 1/Limit2)
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".
8845 SyA. decoupling 2 System A decoupling by overvoltage
level 1
On Tripping of system A overvoltage level
1 causes decoupling.
[O󰆞] Tripping of system A overvoltage level
1 does not cause decoupling.
4.3.1.8 System A Undervoltage (Level 1 & 2) ANSI# 27
General notes
Voltage is monitored depending on parameter "SyA. voltage measuring" (parameter
1851). There are two undervoltage 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.
If this protective function is triggered, the display indicates "SyA. undervoltage 1" or
"SyA. undervoltage 2" and the logical command variable "07.12" or "07.13" will be
enabled.
Refer to ╚═▷ “9.1.1 Triggering Characteristics” for the triggering characteristic of this
monitoring function.
The system A undervoltage Level 2 limit
con󰈡guration parameters are located below the
"SyA. decoupling" function menu on the display.
108 LS-5 v2 Series 37650
4 Con󰈡guration
4.3 Con󰈡gure Monitoring
Released