Engine/Generator Speed Detection - Woodward easYgen-2000 Series User Manual

ID Parameter
2152 Self acknowl‐
edge
2158
2153 Delayed by
engine speed
2159
4.4.3.3

Engine/Generator Speed Detection

General notes
37535B
Configure Monitoring > Engine > Engine/Generator Speed Det...
CL Setting range Description
[Default]
Notes
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.
Speed detection checks if the generator voltage frequency f (deter‐
mined from the measured generator voltage) differs from the
measured engine speed n (determined from the Pickup signal) and
determines a difference (Δf-n).
If the two frequencies are not identical (Δf-n ≠ 0) and the monitored
frequency mismatch reaches or exceeds the threshold, an alarm is
output. Additionally the LogicsManager output "Firing speed" is
checked upon its logical status with respect to the measuring
values "generator frequency" and "Pickup speed".
easYgen-2200/2500 | Genset Control
Ä Chapter 9.5.1 "Alarm Classes"
3315 Ä p. 239) must expire prior to fault monitoring being enabled for
If this protective function is triggered, the display indi‐
cates "Speed/freq. mismatch" and the logical com‐
mand variable "05.07" will be enabled.
Configuration
159