Mains Overfrequency (Level 1 & 2) Ansi# 81O - Woodward easYgen-2000 Series User Manual

Configuration
Configure Monitoring > Mains > Mains Overfrequency (Level...
ID Parameter
3110 Mains decou‐
pling
3113 Mains decou‐
pling feedback
delay
3111 Alarm class
3112 Self acknowl‐
edge
4.4.2.3 Mains Overfrequency (Level 1 & 2) ANSI# 81O
General notes
138
CL Setting range Description
[Default]
2 [GCB] Mains decoupling is carried out according to the following parameters. If one
of the subordinate monitoring functions is triggered, the GCB will be opened.
If the unit is operated in parallel with the mains and the MCB opens, the GCB
will be closed again.
GCB->MCB Mains decoupling is carried out according to the following parameters. If one
of the subordinate monitoring functions is triggered, the GCB will be opened.
If the reply "GCB open" is not present within the delay configured in param‐
eter
MCB->GCB Mains decoupling is carried out according to the following parameters. If one
of the subordinate monitoring functions is triggered, the MCB will be opened.
If the reply "MCB open" is not present within the delay configured in param‐
eter
MCB Mains decoupling is carried out according to the following parameters. If one
of the subordinate monitoring functions is triggered, the MCB will be opened.
Off Mains decoupling monitoring is disabled.
2 0.10 to 5.00 s If the open signal from the respective circuit breaker cannot be detected
within the time configured here, the mains decoupling function performs the
[0.40 s]
action as configured in parameter
2 Class A/B/C/D/ Each limit may be assigned an independent alarm class that specifies what
E/F action should be taken when the limit is surpassed.
[B]
Notes
For additional information refer to
on page 587 .
2 Yes The control automatically clears the alarm if the fault condition is no longer
detected.
[No] The control 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 appro‐
priate buttons or by activating the LogicsManager output "External acknowl‐
edgement" (via a discrete input or via an interface).
There are two overfrequency alarm levels available in the control.
Both alarms are definite time alarms and are illustrated in the figure
below. The figure diagrams a frequency trend and the associated
pickup times and length of the alarms. Monitoring of the frequency
is accomplished in two steps.
Refer to
for the triggering characteristic of this monitoring function.
easYgen-2200/2500 | Genset Control
3113 Ä p. 138, the MCB will be opened as well.
3113 Ä p. 138, the GCB will be opened as well.
3110 Ä p.
Ä Chapter 9.5.1 "Alarm Classes"
If this protective function is triggered, the display indi‐
cates "Mains overfreq. 1" or "Mains overfreq. 2" and
the logical command variable "07.06" or "07.07" will be
enabled.
Ä Chapter 9.1.1 "Triggering Characteristics" on page 481
138.
37535B