Skip to main content

Fault tracing of Volvo Power Generation Engine TAD734GE


Diagnostic function

The diagnostic function monitors and checks that Volvo Engine EMS 2 system functions normally. The diagnostic function has the following tasks:
• Detect and locate functional faults
• Inform that a functional fault has been detected
• Give guidance during fault tracing

Fault code
If the diagnostic function discovers a fault in the EMS -2 system, this is indicated via the fault code/fault reason on the instrument.

Both active (unrectified) and passive (rectified) faults are registered in the control system.
Refer to heading “Running” to read off fault codes/fault messages.

The fault code list contains all the fault codes and fault messages, together with information about causes, reactions and remedies that should be taken. Refer to chapter “Fault codes”.
NOTE: All instruments are options

Active faults

DCU (Display Control Unit)
• the text “!! ENGINE WARNING !!” is shown on the display.
NOTE: You can select the language for the information shown on the display.

CIU (Control Interface Unit)
• the diagnostic lamp starts to flash.
• Easy Link instrument (only with a CIU)
- the relevant lamp on the alarm panel lights
- once you have pressed the diagnostics button, the fault code is shown as text on the tachometer display.

DU (Display Unit)
• Either “WARNING!” or “ALARM STOP” (with buzzer) is shown on the display depending on how serious the fault is.

NOTE: You can select the language for the information shown on the display.

• Fault codes can also be read off using the VODIA tool. For information about using the tool, refer to the VODIA user guide.

Simultaneously, the fault will be stored in the control module memory. When the fault has been rectified and the ignition switch cycled off/on, the fault will no longer be active.

Inactive faults
• DCU - the fault is indicated as passive
• CIU - the diagnostic lamp goes out
• DU - the fault message disappears (inactive fault codes cannot be read off)
• Easy Link - the warning lamp on the alarm panel goes out

Effect on the engine
The engine is effected differently depending on how serious the fault detected by the diagnostic function is.
A fault message comprising the fault code is always created when the diagnostic function finds a functional fault.
The engine is effected differently depending on how serious the fault is.
• The engine is not effected
• The engine goes to idle
• The engine torque is limited to a certain degree
• Engine is stopped

Function
When a functional fault has occurred and the diagnostics system has created one or more fault codes, then these can be read off in different ways depending on which equipment is used. Refer to section “Fault codes”.

If the system indicates that a fault code has been registered:

1. Lower the engine speed to idle or shut off the engine.

2. For DCU/DU
Read off the fault code registered on the display and refer to “Reading off fault codes via DCU” or “Reading off fault codes via DU”.

For CIU
press the diagnostics button and read off the fault code by observing the diagnostic lamp flashes. Refer to “Reading off fault codes via the diagnostics lamp, CIU”.
3. Look up the fault code in chapter “Fault codes” and take the recommended actions.
Check the fault cause via DCU (Display Control Unit)
When a fault code has been created, the following text is shown on the display:
“!! ENGINE WARNING !!”

alternating with

“Press SEL for information”.
NOTE: You can select the language for the information shown on the display.
Read the fault code as follows:
1. Press the SEL button (to come to the fault list).
The fault list shows:
- Operation hours
- Fault cause
- Active/inactive
2. Look up the fault code in chapter “Fault codes” and take the recommended actions.
3. Press the ESC-button to leave the fault list. NOTE: To open the fault list when no fault codes are set, press the SEL-button and select “Diagnostics” from the menu.

Read off the fault codes via DU (Display Unit)

Depending on how serious the fault is, one of the fol-lowing texts will be displayed: “WARNING!” or “ALARM STOP” (buzzer sounds).

1. Press any button to get to the fault list.
The fault list shows:
- Operation hours
- Fault message
2. Look up the fault code in chapter “Fault codes” and take the recommended actions.
3. Press ACK to acknowledge the code. The display background color changes (buzzer is muted).
4. Press EXIT to leave the fault list.

Reading off the fault code via the diagnostics lamp on the instrument panel, CIU
When the system has detected a functional fault, the diagnostic lamp starts flashing. If you press and release the diagnostics button, a fault code will be flashed out.

The fault code consists of two groups of flashes, separated by a pause of two seconds. The fault codes are read by counting the number of flashes in each group. Example: pause = Fault code 2.4 The fault code is registered and can be read off as long as the fault exists. You can find information concerning causes, reaction and remedies in chapter “Fault codes”.

Read the fault code as follows:

1. Press the diagnostics button.
2. Release the diagnostics button and note the fault which is displayed as flashes.
3. Repeat steps 1-2. A new fault code will be flashed out if there are any more registered. Repeat until the first fault code is repeated.
NOTE: When the first fault code is shown again, all fault codes have been shown.
If you press the diagnostics button after a fault has been rectified and the fault codes erased, code 1.1 will be shown “No faults”.

Reading off a fault code via Easy Link instruments (only with CIU)

When the system has detected a functional fault, this will be reported by the diagnostics lamp flashing.
1. Press the diagnostics button. The fault code is shown as text in the tachometer display.
2. Look up the fault code in chapter “Fault codes” and take the recommended actions.
3. When the fault has been rectified, the fault code disappears from the display and the diagnostic lamp goes out.

Erasing fault codes

Fault codes can only be erased with the VODIA tool.

Starlight Power can provide 68KW to 600KW Volvo diesel generator set with good quality and best price.


标签：

Comments

Post a Comment

Popular posts from this blog

Diesel Generator Power Ratings: Standby vs Prime vs Continuous

Diesel generator sets are commonly used in a variety of sectors due to their dependable performance and high efficiency. They can be used for emergency power supply in the event of a power cut or used in places without connection to a power grid. When selecting a diesel generator for your home or business, you need to consider many factors, such as generator’s ratings. In this article, we’ll explain the three basic rating types - standby, prime, and continuous in diesel generators. ISO-8528-1:2018 defines basic generator set rating categories based on four operational categories: Emergency Standby Power (ESP), Prime Power (PRP), Continuous Power (COP) and Limited-Time Running Prime (LTP). Read on and learn the application of power ratings for engines used in generating sets. Standby Power Rating Standby Power(ESP) is used to supply emergency power when the external power supply is interrupted, such as power outages. Standby power rated generators can supply reliable electricity as t...
Post a Comment
Read more

What Should You Pay Attention to in Routine Maintenance of Diesel Generator Sets

In modern society, the stability of power supply is directly related to the operation efficiency of enterprises and people's quality of life. Diesel generators have become an indispensable backup power supply or main power source in various industries due to their high efficiency, durability and reliability. However, to ensure the smooth operation and optimal performance of the generator sets, regular maintenance is essential. Here is what you need to pay attention to in the routine maintenance of diesel generators. Keep your generator clean It’s important to keep the generator’s exterior and the generator room clean. Regularly remove any dirt, dust, or debris that may accumulate to on the generator’s surface. This is not only for the sake of beauty, but also for the smooth operation of the unit. Cleaning the generator’s exterior, air intake vents, exhaust outlets and generator room can effectively reduce the risk of generator overheating. In addition, check if the connection bol...
Post a Comment
Read more

How to Connect A Diesel Generator to Your House?

Diesel generators are fuel-efficient and reliable, which can almost meet the power needs of any application. If you want to power the whole house during power shortages, it’s a good choice to choose a diesel generator set as the backup electricity supply. But how to connect a diesel generator to your house? Read on and you will find the answer. Options to connect a diesel generator to your home   Keep in mind that never plug your generator directly into the mains, or it will cause back feeding, damage your appliances and be life-threatening for utility workers. Generally, you can choose to connect a generator to your house by using extension cords or a transfer switch. Understanding the difference between them is helpful for you to choose the right type. Extension cords   Typically, extension cords are suitable for smaller diesel generators that used for short term. They require no installation and are cost-effective. If you need to power only some basic appliances such as...
Post a Comment
Read more