Sens NRG24-20 Spezifikationen PDF herunterladen (Seite 27)

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S-1566b (4/08) Page 4 of 6

Emergency stop

Annunciated whenever either emergency stop signal is

received from external switch.

Hydro mechanical fuel system engine

protection

Overspeed shutdown - Default setting is 115% of

nominal.

Low lube oil pressure warning/shutdown

- Level is preset

(configurable with InPower) to match the capabilities of

the engine used. Control includes time delays to prevent

nuisance shutdown signals.

High lube oil temperature warning/shutdown

- Level is

preset (configurable with InPower) to match the

capabilities of the engine used. Control includes time

delays to prevent nuisance shutdown signals.

High engine temperature warning/shutdown

- Level is

preset (configurable with InPower) to match the

capabilities of the engine used. Control includes time

delays to prevent nuisance shutdown signals.

Low coolant temperature warning

– Indicates that engine

temperature may not be high enough for a 10 second

start or proper load acceptance.

Sensor failure indication

- Logic is provided on the base

control to detect analog sensor or interconnecting wiring

failures.

Full authority electronic engine protection

Engine fault detection is handled inside the engine ECM.

Fault information is communicated via the SAE-J1939

data link for annunciation in the HMI.

General engine protection

Low and high battery voltage warning - Indicates status

of battery charging system (failure) by continuously

monitoring battery voltage.

Weak battery warning

- The control system will test the

battery each time the generator set is signaled to start

and indicate a warning if the battery indicates impending

failure.

Fail to start (overcrank) shutdown

- The control system

will indicate a fault if the generator set fails to start by the

completion of the engine crack sequence.

Fail to crank shutdown

- Control has signaled starter to

crank engine but engine does not rotate.

Cranking lockout

- The control will not allow the starter to

attempt to engage or to crank the engine when the

engine is rotating.

Alternator protection

High AC voltage shutdown (59) - Output voltage on any

phase exceeds preset values. Time to trip is inversely

proportional to amount above threshold. Values

adjustable from 105-130% of nominal voltage, with time

delay adjustable from 0.1-10 seconds. Default value is

110% for 10 seconds.

Low AC voltage shutdown (27)

- Voltage on any phase

has dropped below a preset value. Adjustable over a

range of 50-95% of reference voltage, time delay 2-20

seconds. Default value is 85% for 10 seconds.

Overcurrent warning/shutdown

- Implementation of the

thermal damage curve with instantaneous trip level

calculated based on current transformer ratio and

application power rating.

Under frequency shutdown (81 u) - Generator set output

frequency cannot be maintained. Settings are adjustable

from 2-10 Hz below nominal governor set point, for a

5-20 second time delay. Default: 6 Hz, 10 seconds.

Over frequency shutdown/warning (81o

) - Generator set

is operating at a potentially damaging frequency level.

Settings are adjustable from 2-10 Hz above nominal

governor set point for a 1-20 second time delay. Default:

6 Hz, 10 seconds, enabled.

Loss of sensing voltage shutdown

- Shutdown of

generator set will occur on loss of voltage sensing inputs

to the control.

Field overload shutdown

- Uses field voltage to

shutdown generator set when a field overload condition

occurs.

Field control interface

Input signals to the base control include:

- Remote start

- Local and emergency stop

- Configurable inputs: Control includes (4) input signals

from customer discrete devices that are configurable

for warning, shutdown or status indication, as well as

message displayed

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