Diesel generator control system inputs

Diesel generator control system inputs

Input 1-2-3 are fully user configurable. For each input you can choose one of the three configurable options (see below in this page). The analog inputs are pre-programmed to interface with analog sensors for OIL PRESSURE, ENGINE TEMPERATURE and FUEL LEVEL. You can set up warnings and shut-downs. These analog input can be configured digital as well.

 

Diesel generator control system inputs description

Connector JC: 10 Poles    (Phoenix P.N. 1748053 / 3.81mm)        Analog & Digital Inputs

JC-1

Magnetic Pickup (-) / W

You can connect a magnetic pickup to detect the speed of the engine. As option, if pickup is not available, you can connect the 'W' terminal of the charger alternator to JC-1. In this case connect terminals JC-2 & JC-3 together by using a short wire. You are required to set the number of teeth in the parameter [PICKUP/W RATIO]  (see section11.5.5).            

JC-2

Magnetic Pickup (+)

JC-3

W Enable

JC-4

GND Compensation

(Ground Sense)

 

This is a mandatory connection if the Be124 it is more than 5 meters away from the engine. You are required to connect terminal JC-4 to the body of the engine (a solid connection is required). If the engine is closer, you can connect JC-4 to battery minus. If you do not use an analog sensor (only digital inputs) you can leave this terminal open.

 

JC-5

 

Fuel Level Sensor or Switch

 

This input monitors the Fuel Level sensor. See section 11.6 to set an alarm and table 11.10 for the programmable response curve. Factory programming sets the input in digital mode (you are required to connect a switch). To enable the analog mode, you are required to set at least one alarm (Low/High fuel) and connect the ground sense JC-4.

 

JC-6

 

Temperature Sensor or Switch

This input monitors the Temperature sensor. See section 11.4.10-11 to set an alarm and table 11.10 for the programmable response curve. Factory programming sets the input to digital mode (you are required to connect a switch). To enable the sensor mode you are required to set one alarm (Low or High temperature) and connect the ground sense JC-4.

JC-7

 

Oil Pressure Sensor or

Switch

This input monitors the Oil Pressure sensor. See section 11.4.11 to set an alarm and table 11.10 for the programmable response curve. Factory programming sets the input to digital mode (you are required to connect a switch). To enable the sensor mode you are required to set one alarm (Low pressure warning or shutdown) and connect the ground sense JC-4.

JC-8

Configurable

Digital Input 3

 

 

 

You can connect switches. Each input can be configured via software: see table 11.8 for the available options. You have options for normally closed or normally open contacts. The other side of the switches must be connected to battery minus terminal (or ground, supposing that battery minus is properly grounded).

JC-9

Configurable

Digital Input 2

 

JC-10

Configurable

Digital Input 1

 

Diesel generator control system input options description

 CONFIGURABLE DIGITAL INPUT OPTIONS 

To enter this menu, see section 11.0. Use [ ↑ ] or [ ↓ ] to select a parameter. Push [→] to enter the numerical field. Push [ ↑ ] or [ ↓ ] to set a value. Push [←] to return to the parameter list.

Configurable Input 1 (JC-10)

Configurable Input 2 (JC-9)

Configurable Input 3 (JC-8)

 

INPUT  1    OPTION

                         1

INPUT  1  CONTACT

                      N.O.

.

 

INPUT   2     OPTION

                           12

INPUT  2   CONTACT

                           N.O.

 

INPUT   3    OPTION

                           13

INPUT   3    CONTACT

                          N.O.

For each input you can choose an option (see the table 11.8) and contact can be either Normally Open or Closed. Normally Open means that the functions triggers when you close the switch. Normally Closed means that the function triggers when you open the switch. Factory programming is 'Normally Open'.

 

Table 11.8  -   List of options for CONFIGURABLE DIGITAL INPUTS

 

Option

Description

 

Option

Description

[ 0 ]

It disables the input. The Be124 will totally ignore the input.

[ 7 ]

Remote LOCK. It disables the generator and stops the engine. The Be124 indicates the alarm REMOTE LOCK (see 23.2). When you turn off the switch (if a N.O. contact is used), the engine may start automatically and Be124 will automatically clear the alarm.

[ 1 ]

It stops the engine immediately and the display will indicate a SHUTDOWN alarm (see 23.2)

[ 8 ]

Oil Pressure Switch option (program option N.C. if you use a Pressure Switch that closes the contacts in case of Low Oil Pressure). The Be124 will shut down the engine in case of low oil pressure (see 23.7). The alarm is ignored during the Alarms Bypass time. This option can be used if the JC-7 input is already used in analog mode (for sensor) and you need extra-protection by using a pressure switch connected to a digital input.

[ 2 ]

It shutdowns the engine but the Be124 ignores the input during the Alarms Bypass Timing

(See 11.4.9 to program the Alarms Bypass Time). The display will indicate a SHUTDOWN alarm (see 23.2)

[ 9 ]

Coolant Temperature Switch option (program option N.O. if the temperature switch closes the contacts in case of high temperature). The Be124 will shut down the engine (see 23.5). The alarm is ignored during Alarms Bypass time. This option can be used if the JC-6 input is already used in analog mode (for sensor) and you need extra-protection by using a temperature switch connected to a digital input.

[ 3 ]

It stops the engine after a Cooling Down time (see 11.4.6).

The display will indicate a SHUTDOWN alarm (see 23.2).

[ 10 ]

Fuel Level Switch option (program option N.O. if level switch closes the contacts in case of low fuel). The Be124 will shut down the engine after the TANK EMPTY DELAY time-out (see 11.6.1). In case you set the timer in OFF mode, the Be124 will provide a warning only. Use this option if the JC-5 input is already used in analog mode (for sensor) and you need extra-protection by using a level switch connected on a digital input.

[ 4 ]

Be124 ignores the input during the Alarms Bypass and will stop the engine after a Cooling Time. The display will indicate a SHUTDOWN alarm (see 23.2)

[ 11 ]

Idle Speed option (it holds the engine at IDLE speed). If the engine is running at nominal speed, the Be124 will open the GCB and orders the governor to run at IDLE speed. Vice versa. Be124 will run the engine at nominal speed and will close the GCB.

[ 5 ]

Warning Input Mode. The display will indicate a WARNING alarm (see section 23.2). The engine will continue to run,

[ 12 ]

 

Note(1)

Remote Engine Start. Be124 monitors the input only in ‘AUTO’ mode (see 2.4). If you program option N.O., the engine will start when you connect the input to battery minus. Be124 stops the engine when you open the switch. Program the option N.C. if you want to reverse the logic.

[ 6 ]

As above but the Be124 ignores the input during the Alarms Bypass Timing (See 11.4.9).

[ 13 ]

 

Note(1)

Remote Genset Start (It starts the engine and enables the GCB). Be124 monitors the input only in AUTO mode (see 2.4). If you program option N.O., the engine will start when you connect the input to battery minus. Be124 opens the GCB and stops the engine when you open the switch. Program the option N.C. if you want to reverse the logic.

 

Note(1) To limit the running time you can set the parameter [RUN TIMEOUT] (see10.3). Once the timer expires, the Be124 will shutdown the engine. You have to turn the key to 'OFF' position to cancel the alarm.