PCS 6000 system distribution cabinet de-energizing, grounding and start-up CCU14 3BHE056532R0001

　　Start-up after maintenance or troubleshooting

　　Service MTTR 0 - 2 h

　　1. To release the over pressure from the cooling liquid circuit or to empty the cooling liquid circuit for the replacement of the faulty component, refill the cooling system to static pressure of 1.3 to 1.7 bar.

　　For instructions, see the Operation and maintenance manual of the PCS6000 water cooling system, in Appendix A06 of the Data-sheets components of the user's manual.

　　2. Check that the water cooling system is ready for operation.

　　See the user manual for the water cooling unit.

　　3. Remove safety grounding equipment.

　　4. Visually check the appearance, cleanliness inside and outside and that no tools, grounding equipment and other objects are left in any of the units.

　　5. Check that the grid is energized.

　　6. Connect all disconnected power supplies.

　　7. Switch on all MCBs (mini circuit breakers).

　　8. Make sure the “Bat.-select” switch on the uninterrupted power supply (UPS) module is set according to electrical drawings (“3.4Ah” in CCU, “7.2Ah” in POU) (see Fig. 8–2).

　　9. Close all unit doors properly.

　　All units containing live MV equipment are equipped with door switches and solenoid coils.

　　IMPORTANT! If a door is not closed, the converter start will be prevented.

　　Check that the Key Switch is in “ON” position

　　Figure 5–1 Key switch

　　IMPORTANT! The grid isolators and the grid grounding isolator are not operated by the PCS6000 control.

　　Turn the DC-link grounding isolator in position “not grounded”.

　　The signal lamp ISOLATOR CLOSED must be off, ISOLATOR RELEASED stays on until the GRB disconnector is closed. (Only with DC-link grounding isolator modification otherwise until DC-link is above 50VDC)

　　Figure 5–2 DC-link grounding isolator in position “not grounded”

　　Check the status supervision signal lamps (GRB closed, DC-link grounding isolator closed/released) located at the front of the PCS6000.

　　All three yellow signal lamps must be off to get the ready to start converter.(With old grounding isolator setup grounding isolator is still released)

　　If applicable, check that the grid ground switch is open and the grid isolators are closed.

　　Check that the main circuit breaker is in operating position.

　　Press the ACKNOWLEDGE ALARM or ACKNOWLEDGE TRIP function key or select the appropriate command from remote control to reset all pending alarms and trips. If an alarm or fault cannot be reset, the original alarm or fault cause might still be present. Ensure that the cause is removed and press the ACKNOWLEDGE ALARM or ACKNOWLEDGE TRIP function key again.

　　Faults caused by defects cannot be reset with the ACKNOWLEDGE TRIP function key. Elimination of these faults requires troubleshooting by authorized service personnel. For more information concerning “Acknowledge of alarms” for S2S application, see the “PCS6000 Local control panel description”, 3BHS606571 E49.

　　The PCS6000 can only be started if all faults are eliminated.

　　The PCS6000 is now in status OFF and ready to be started via the customer's HMI system (see application specific information in Appendix A04 Operation & Interface Documents, 01 Function Description and Control Interface). The above mentioned commands can also be given from a service PC, if it is connected to the PCS6000.

　　For more information, see the “PCS6000 Service software manual”, 3BHS600000 E81.

　　If parts have been replaced, check in the list in section 7.3, Checking procedure, page 81 or in section 10.3, Overview of serialized power components, page 135 as to whether these parts have a serialization profile, ie, these parts were serialized in production.

　　If such a part is replaced in the field the serialization database has to be updated, ie, the new serial number must be reported to ABB by means of a warranty and failure report.

　　Troubleshooting

　　General

　　The following sections provide instructions on how to replace control components and are intended for qualified personnel who are responsible for servicing a PCS6000 drive.

　　Safety information

　　Before you begin, read and understand the material in chapter 2, Important safety information, page 23 and always follow the safety rules that are described in section 2.3.2, The 7 steps that save lives, page 26.

　　Dangerous voltage inside the PCS6000 can lead to life-threatening situations, injury of the persons involved or damage to equipment.

　　When planning and carrying out maintenance work, the operating condition of the whole system should be considered.

　　High temperatures, risk of burns!

　　Rails, reactors, resistors and fuses can be hot.

　　Cooling fans can start automatically!

　　The water cooling system and the cooling fans can start automatically as soon as the auxiliary voltage is switched on or when the EMERGENCY OFF button is released, even if the PCS6000 is de-energized.

　　Switch off the corresponding motor protection switches (see diagrams contained in the cabinet specific documentation) to shut down the cooling system.

　　Risk of component damage.

　　▶ ABB strongly recommended to carry out all preventive maintenance work according to the maintenance schedule on time and at the stated intervals.

　　▶ Observing the maintenance schedule can prevent system malfunctions.

　　▶ ABB is not liable for defects as a result of neglecting preventive maintenance work.

　　▶ To maintain safe and reliable operation of the PCS6000, ABB recommends taking out a service contract with the local ABB service organization.

　　▶ For more information contact your local service representative.

　　▶ During the warranty period, any repair work must be carried out exclusively by trained personnel according to the ABB service and authorization concept.

　　▶ ABB recommends periodical training for the maintenance and repair personnel.

　　Standard procedure for troubleshooting

　　IMPORTANT! After a temporary blocking of IGCTs, the PCS6000 attempts to reset the fault and to restart. If the restart is successful, ie, the device does not trip again within a pre-set time, the fault will be cleared automatically.

　　In case of a fault proceed as follows:

　　1. Select the fault and alarm display of one of the following:

　　• Overriding control system

　　• Optional commissioning tool

　　NOTICE Do NOT clear or reset the fault buffer / display and the transient recorder data at this stage!

　　2. Check the alarm display for the first failure (marked with “FF” in commissioning tool) and other, possibly related error messages.

　　Read error messages on remote terminal

　　1) Try to find and rectify using Fault Handbook.

　　2) Check states of control equipment, power supplies, fiber-optic and communication links.

　　3) Check states of power equipment(converter, cooling system, switchgear, etc.)

　　4) Try to eliminate fault.

　　Go to site

　　1) Try to find and rectify fault using

　　Fault Handbook.

　　2) Check states of control equipment,power supplies, fiber-optic andcommunication links.

　　3) Check states of power equipment(converter, cooling system, switchgear,etc).

　　4) Repair or replace faulty component.

　　Figure 6–2 Standard procedure for troubleshooting (overview)

3BHS600000_E80_RevF_Service_Manual_PCS6000 De-energizing, grounding and start-up(1).pdf

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