Woodward: easYgen-3400XT (P1) 8440-2084

Product number: 8440-2087

Manufacturer product number: 8440-2087

Description: Woodward: easYgen-3400XT (P2), Genset Controller 1A/5A

The discrete inputs may be grouped into two categories:

n Programmable–The discrete input has been assigned a default function

using either the LogicsManager or preconfigured alarms

such as “emergency stop”.– The following sections describe how these functions are

assigned.– The function of a discrete input can be changed if required.– The following description of the inputs, labeled with “pro

grammable”, refers to the preconfiguration.

n Fixed– The discrete input has a specific function that cannot be

changed depending upon the configured application mode.

Input Type/Preset Description

Discrete input [DI 01] Programmable

Preconfigured to “Emergency stop”

This discrete input is configured as alarm class F and is not

delayed by the engine speed.

Discrete input [DI 02] Programmable

Preconfigured to “Start in AUTO”

Enabled in the AUTOMATIC operation mode

This discrete input is configured as a Control input in the alarm

class and is not delayed by the engine speed.

n Energized

If the unit is in the AUTOMATIC operation

mode (selected with the operating mode selec

tion push button on the front panel) the con

trolled engine is started automatically.

n De-energized

The engine is stopped.

Discrete input [DI 03] Programmable

Preconfigured to “Low oil pressure”

This discrete input is configured as alarm class B and is

delayed by the engine speed.

Discrete input [DI 04] Programmable

Preconfigured to “Coolant temperature”

This discrete input is configured as alarm class B and is not

delayed by the engine speed.

Discrete input [DI 05] Programmable

Preconfigured to “Alarm acknowledge”

This discrete input is used as a remote acknowledgement for

alarms. The input is normally de-energized. When an alarm is

to be acknowledged the input is energized. The first time an

alarm in acknowledged, the centralized alarm/horn is silenced.

When the input is energized a second time, all alarms, which

are no longer active, will be acknowledged.

This discrete input is configured as a Control input in the alarm

class and is not delayed by the engine speed.

Discrete input [DI 06] Programmable

Preconfigured to “Enable MCB”

Only applicable for application mode

This discrete input is configured as a Control input in the alarm

class and is not delayed by the engine speed.

n Energized

8440-2084

The MCB is enabled and closure of the

breaker is permitted.

n De-energized

The MCB is not enabled and closure of the

breaker is not permitted. This function permits

a supervisory control (i.e. a PLC) to allow the

closure of the MCB by the easYgen.

Discrete input [DI 07] Fixed to “Reply: MCB open” Only applicable for application mode

This input implements negative function logic.

The controller utilizes the CB auxiliary (B) contacts into this dis

crete input to reflect the state of the MCB.

This discrete input must be energized to show when the

breaker is open and de-energized to show when the MCB is

closed. The status of the MCB is displayed on the screen.

This input is usually used in all breaker modes to change

between frequency/voltage and power/power factor control

(refer to note below).

Discrete input [DI 08] Fixed to “Reply: GCB open” Only applicable for application modes  and

This input implements negative function logic.

The controller utilizes the CB auxiliary (B) contacts into this dis

crete input to reflect the state of the GCB. This discrete input

must be energized to show when the breaker is open and de

energized to show when the GCB is closed. The status of the

GCB is displayed on the screen.

This input is usually used in all breaker modes to enable

reverse power protection, overload MOP protection, mains

decoupling and the activation of the load sharing (refer to note

below).

Discrete input [DI 09] Programmable

Preconfigured for “Alarm class B”

This discrete input is not delayed by the engine speed.

Discrete input [DI 10] Programmable

Preconfigured for “Alarm class B”

This discrete input is not delayed by the engine speed

n Programmable– The discrete output has been assigned a default function

using the LogicsManager.– The following text describes how these functions are

assigned using the LogicsManager.– It is possible to change the function of the discrete output if

required.– The following description of the outputs, labeled with “pro

grammable”, refers to the preconfiguration.

n Fixed– The discrete output has a specific function that cannot be

changed depending upon the configured application mode.– The discrete output cannot be viewed or changed in the

LogicsManager.– However, the discrete output may be programmable in

some application modes.