Change Of Frequency - Woodward easYgen-2000 Series User Manual

ID Parameter
3283 Delay step 1
3284 Delay step 2
3280 Alarm class
3293 Self acknowl‐
edge
3296 Mains decou‐
pling by QV
4.4.2.10

Change Of Frequency

Phase shift
37535B
CL Setting range Description
[Default]
2 0.10 to 99.99 s If the QV monitoring conditions are met, for the delay time configured here, an
alarm "QV monitoing 1" will be issued and LogicsManager 07.29 becomes
[0.50 s]
TRUE.
Notes
The decoupling function is only activated if "Mains decoupling by QV" (param‐
eter
2 0.10 to 99.99 s If the QV monitoring conditions are met, for the delay time configured here, an
alarm "QV monitoing 2" will be issued and LogicsManager 07.30 becomes
[1.50 s]
TRUE.
2 Class A/B/C/D/ The alarm class specifies what action should be taken when at least one
E/F delay has been exceeded.
[B]
Notes
The alarm class is valid for parameter
For additional information refer to
on page 587
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 condi‐
tion 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).
Notes
The self acknowledge is valid for parameter
3284 Ä p.
2 On The QV monitoring function is linked to the mains decoupling function with all
its consequences and is assigned to "Delay step 1" (parameter
3283 Ä p.
[Off] The QV monitoring function is ignored in the mains decoupling function.
A vector/phase shift is defined as the sudden variation of the
voltage curve which may be caused by a major generator load
change. It usually occurs, if the utility opens the MCB, which
causes a load change for the genset.
The easYgen measures the duration of a cycle, where a new
measurement is started with each voltage passing through zero.
The measured cycle duration will be compared with an internal
quartz-calibrated reference time to determine the cycle duration dif‐
ference of the voltage signal.
easYgen-2200/2500 | Genset Control
Configure Monitoring > Mains > Change Of Frequency
3296 Ä p. 151) is configured to "On".
Ä Chapter 9.5.1 "Alarm Classes"
151.
151).
Configuration
3283 Ä p. 151 and 3284 Ä p.
3283 Ä p. 151 and
151.
151