Shutdown Summary - Woodward Peak 200 Original Instructions Manual

Digital control for steam turbines

Table of Contents

Manual 35051

Event

DESCRIPTION

AI Chan 4 Level 1 ALM

AI Chan 4 Level 2 ALM

HP Valve Pos Fdbk Diff ALM

Limiter in Control

Alarm from LinkNet Nodes

Internal OVERSPEED Reached

Manual Valve Control Enabled

spare_58

spare_59

spare_60

61 -100

The Shutdown Summary screen is always available with the VIEW button under the TRIPPED LED.

When a trip is detected, it is latched in the event logic, the Trip relay is de-energized, all steam valve

demand outputs go to zero, and the TRIPPED LED illuminates (Red). The cause of the event indicates

with an Event ID, description, and time/date stamp on the Shutdown Summary page. The list will always

place the first event at the top of the list; if more than one trip condition is present, they list with their

corresponding time stamp.

Under the active Trip Latch window, this screen will also display the last 5 previous Trips that were

recorded by the Peak200 and are listed with their Event ID, description and time stamp.

If the optional LinkNet I/O is added to the system, then a page navigation button will appear that will allow

the user to view a similar list of events that are generated from these signals.

To clear any shutdowns that are no longer present, press the RESET key, close the Reset contact input,

or select Reset from either Modbus communications link. If the cause of the event has been corrected,

the event will clear, if not it will remain, and the time-stamp will remain unchanged.

Woodward

Released

Peak®200 Digital Control for Steam Turbines

MEANING

Analog Input chan 4 user configured alarm at level 1

setpoint

Analog Input chan 4 user configured alarm at level 2

setpoint

Error between Valve demand and valve position feedback

Valve limiter is in Control

Summary of Alarms from LinkNet nodes (if used)

Turbine overspeed alarm during External Test

Manual HP Valve Control mode is active

reserved - not used