Woodward easYgen-2000 Series User Manual page 156

Configuration
Configure Monitoring > Mains > Mains Voltage Phase Rotat...
ID Parameter
3970 Monitoring
3974 Mains phase
rotation
3971 Alarm class
3972 Self acknowl‐
edge
3973 Delayed by
engine speed
156
CL Setting range Description
[Default]
2 [On] Phase rotation monitoring is carried out according to the following parame‐
ters.
Off No monitoring is carried out.
2 [CW] The three-phase measured mains voltage is rotating CW (clock-wise; that
means the voltage rotates in L1-L2-L3 direction; standard setting).
CCW The three-phase measured mains voltage is rotating CCW (counter clock-
wise; that means the voltage rotates in L1-L3-L2 direction).
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
CAUTION: If an alarm class that leads to an engine shutdown (alarm class C
or higher) is configured into this parameter, a main phase rotation alarm may
lead to a genset shutdown due to an alarm of class C or higher.
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).
2 Yes Monitoring for fault conditions is not performed until engine delayed moni‐
toring is enabled. The engine monitoring delay time (param‐
eter
parameters assigned this delay.
[No] Monitoring for this fault condition is continuously enabled regardless of engine
speed.
easYgen-2200/2500 | Genset Control
This monitoring function is only enabled if Mains
voltage measuring (parameter
ured to "3Ph 4W" or "3Ph 3W" and the measured
voltage exceeds 50 % of the rated voltage (param‐
eter 1768 Ä p. 95) or if Mains voltage measuring
(parameter 1853 Ä p.
(in this case, the phase rotation is not evaluated, but
defined by the 1Ph2W phase rotation (param‐
eter 1859 Ä p. 96)).
Ä Chapter 9.5.1 "Alarm Classes"
3315 Ä p. 239) must expire prior to fault monitoring being enabled for
1853 Ä p. 97) is config‐
97) is configured to "1Ph 2W"
37535B