Control Unit NII_Z_1: Check Device Tripping and Operation of SDE Fault-Trip Indication Contacts - MTZ Basic Standard Maintenance Procedures

Safety Instructions

DANGER
HAZARD OF ELECTRIC SHOCK, EXPLOSION, OR ARC FLASH Apply appropriate personal protective equipment (PPE) and follow safe electrical work practices. See NFPA 70E, CSA Z462, NOM 029-STPS, or local equivalent. This equipment must only be installed and serviced by qualified electrical personnel. Unless specified otherwise in the maintenance procedures, all operations (inspection, test, and preventive maintenance) must be carried out with the device, the chassis, and the auxiliary circuits de-energized. Check that the device and the chassis are de-energized on the upstream and downstream terminals. Always use a properly rated voltage sensing device to confirm that the device, the chassis, and the auxiliary circuits are de-energized. Install safety barriers and display a danger sign. During the tests, it is strictly forbidden for anyone to touch the device, the chassis, or the conductors while voltage is applied. Before turning on power to this equipment, check that all connections are made with the correct tightening torque and the device is open (OFF position). Before turning on power to this equipment, put all devices, doors, and covers back in place. Before turning on power to this equipment, beware of potential hazards and carefully inspect the work area for tools and objects that may have been left inside the equipment. Failure to follow these instructions will result in death or serious injury.

DANGER

HAZARD OF ELECTRIC SHOCK, EXPLOSION, OR ARC FLASH

Apply appropriate personal protective equipment (PPE) and follow safe electrical work practices. See NFPA 70E, CSA Z462, NOM 029-STPS, or local equivalent.
This equipment must only be installed and serviced by qualified electrical personnel.
Unless specified otherwise in the maintenance procedures, all operations (inspection, test, and preventive maintenance) must be carried out with the device, the chassis, and the auxiliary circuits de-energized.
Check that the device and the chassis are de-energized on the upstream and downstream terminals.
Always use a properly rated voltage sensing device to confirm that the device, the chassis, and the auxiliary circuits are de-energized.
Install safety barriers and display a danger sign.
During the tests, it is strictly forbidden for anyone to touch the device, the chassis, or the conductors while voltage is applied.
Before turning on power to this equipment, check that all connections are made with the correct tightening torque and the device is open (OFF position).
Before turning on power to this equipment, put all devices, doors, and covers back in place.
Before turning on power to this equipment, beware of potential hazards and carefully inspect the work area for tools and objects that may have been left inside the equipment.

Failure to follow these instructions will result in death or serious injury.

Procedure Definition

Procedure characteristics	Description
Action	Check that the device trips. Check that the fault-trip indication contacts, SDE1 (standard) and SDE2 (optional), operate correctly. Check that the device resets mechanically (standard) and electrically (with optional RES remote reset).
Goal	Verify that the device operates fully (tripping mechanism, indication, and reset) when an electrical fault occurs.
Frequency	Refer to Recommended Frequency for the Routine End-User Maintenance Program.
Special indications	–
Necessary tools	A PC running EcoStruxure Power Commission software A USB cable (standard to mini USB port) LV847074SP terminal block Ohmmeter
Related documents	MasterPacT MTZ1 - IEC Switch-Disconnectors and Circuit Breakers with MicroLogic X Control Unit - User Guide MasterPacT MTZ2/MTZ3 - IEC Switch-Disconnectors and Circuit Breakers with MicroLogic X Control Unit - User Guide MasterPacT MTZ - MicroLogic X Control Unit - User Guide EcoStruxure Power Commission Online Help MasterPacT MTZ2/MTZ3 - SDE2 Fault-Trip Indication Contact / RES Remote Reset - Instruction Sheet MasterPacT MTZ1/MTZ2/MTZ3 - Auxiliary Terminals - Instruction Sheet

Preliminary Conditions

The device must comply with the conditions specified below. Refer to the MasterPacT MTZ User Guides to find instructions for operating the device.

Device installation type	Position of poles	Mechanism	Device position in the chassis
Fixed	Closed	Discharged	N/A
Drawout	Closed	Discharged	Test

SDE Fault-Trip Indication Contact and RES Remote Reset Wiring Diagram

The optional RES electrical remote reset is not compatible with the optional SDE2 additional fault-trip indication contact because they are installed in the same physical place.

SDE1 and SDE2 fault-trip indication contacts		SDE1 fault-trip indication contact and RES remote reset

Checking the MicroLogic X Trip Cause LEDs

Step	Action	Corrective action
1	Briefly press (<1 s) the Test/Reset button and check that the four trip cause LEDs and the red Service LED are on.	If one LED does not light up, contact your Schneider Electric Services representative. If the four LEDs light up in sequence or the four trip cause LEDs and the red Service LED do not light up, refer to Step 3 when checking the MicroLogic X control unit in procedure Device NII_Z_1. NOTE: If the LEDs light up in sequence, the red Service LED remains lit until the battery is changed or empty.

Step

Action

Corrective action

1

Briefly press (<1 s) the Test/Reset button and check that the four trip cause LEDs and the red Service LED are on.

If one LED does not light up, contact your Schneider Electric Services representative.
If the four LEDs light up in sequence or the four trip cause LEDs and the red Service LED do not light up, refer to Step 3 when checking the MicroLogic X control unit in procedure Device NII_Z_1.

NOTE: If the LEDs light up in sequence, the red Service LED remains lit until the battery is changed or empty.

Do a Force Trip Test

@expertsD2: check validity of EPC screens

Step	Action	Corrective action
1	If the device is equipped with an MN undervoltage release, either connect it to the power supply with its rated voltage or remove the MN undervoltage release.
2	Connect a PC running EcoStruxure Power Commission software to the MicroLogic X control unit. A Cable plug connected to the mini USB port of MicroLogic X control unit B Standard to mini USB port cable C PC running EcoStruxure Power Commission software
3	On EcoStruxure Power Commission software, select the device.
4	Force the device to trip by clicking the Force trip button on the EcoStruxure Power Commission screen.
5	Check that the device trips and that the blue fault-trip reset button on the front cover pops out.	If the blue fault-trip reset button does not pop out, contact your Schneider Electric Services representative. If the device does not trip: Check that the device is closed. Check that the blue fault-trip reset button is pushed-in. Refer to troubleshooting in the appendix. Do the procedure again. If the problem persists, contact your Schneider Electric Services representative.
6	Check that the LED Isd/Ii is on and that the MicroLogic X screen display turns to red with the corresponding message.

Declaring the Maintenance Date in EcoStruxure Power Commission Software

NOTICE
INCORRECT MAINTENANCE SCHEDULE The date of the maintenance program performed must be declared by using EcoStruxure Power Commission software. Failure to follow these instructions will result in invalid maintenance schedule.

Step	Action	Corrective action
1	On EcoStruxure Power Commission software, display the SWITCHBOARD VIEW.
2	Click Device Check up section. Result: The product switchboard displays.
3	Click the Maintenance tab.
4	In the Last Maintenance Details section, click View history.
5	Click the pen icon next to the maintenance program you perform.
6	In the window that opens: Enter the day’s date. NOTE: When the maintenance program is performed, the date must be defined in EcoStruxure Power Commission software to synchronize the next maintenance date. Enter your company name in Company name. Enter your name in Maintenance operator name. Click APPLY to validate changes and close the window.
7	The maintenance program definition is protected by a password. You are prompted to provide the password: Type the Administrator password of the MicroLogic X control unit. Click CONTINUE. Result: The maintenance program definition is updated.
8	Click the green arrow on the left side of Last Maintenance Details.
9	In the Maintenance screen: Check that Last Maintenance Details have been correctly updated. Take note of information in Next Maintenance Details: Level: Maintenance program defined by the maintenance frequency regarding the device maintenance plan. Due in: Time interval (in months) in which the next maintenance program indicated must be performed. Overdue since: If applicable, time interval (in months) since the scheduled date of the indicated maintenance program. NOTE: In due course, a maintenance program reminder displays the time interval in which the next maintenance program must be performed.	If Last Maintenance Details are incorrect, change data in EcoStruxure Power Commission software again.
10	Exit EcoStruxure Power Commission software.

Checking Operation of SDE Fault-Trip Indication Contact

Step	Action	Corrective action
1	With the device in tripped position, check electrical continuity between terminals 81-84 on SDE1 contact.	In case of electrical non-continuity between terminals: For a fixed device, contact your Schneider Electric Services representative. For a drawout device, check that the SDE1 contact operates correctly, as follows: 1. Put the device in the withdrawn position. 2. Insert an LV847074SP terminal block at the appropriate location on the device. 3. Check the electrical continuity directly on the LV847074SP terminal block: If the SDE1 contact operates correctly, replace the auxiliary terminal block installed on the chassis (refer to MasterPacT MTZ1/MTZ2/MTZ3 - Auxiliary Terminals - Instruction Sheet) and do the procedure again with the device in the test position. If the SDE1 contact does not operate correctly, contact your Schneider Electric Services representative.
2	With the device in tripped position, check electrical continuity between terminals 181-184 on SDE2 contact, if installed.	In case of electrical non-continuity between terminals: For a fixed MasterPacT MTZ1 device, contact your Schneider Electric Services representative. For a fixed MasterPacT MTZ2/MTZ3 device: replace the SDE2 contact (refer to MasterPacT MTZ2/MTZ3 - SDE2 Fault-Trip Indication Contact / RES Remote Reset - Instruction Sheet) and do the procedure again. For a drawout device, check that the SDE2 contact operates correctly, as follows: 1. Put the device in the withdrawn position. 2. Insert an LV847074SP terminal block in the appropriate location on the device. 3. Check the electrical continuity directly on the LV847074SP terminal block: If the SDE2 contact operates correctly, replace the auxiliary terminal block (refer to MasterPacT MTZ1/MTZ2/MTZ3 - Auxiliary Terminals - Instruction Sheet) and do the procedure again with the device in the test position. If the SDE2 contact does not operate correctly: – For MasterPacT MTZ1, contact your Schneider Electric Services representative. – For MasterPacT MTZ2/MTZ3, replace the SDE2 contact (refer to MasterPacT MTZ2/MTZ3 - SDE2 Fault-Trip Indication Contact / RES Remote Reset - Instruction Sheet).
3	Press the closing pushbutton. If the device is configured with the RAR automatic reset option, the device closes. If the device is not configured with the RAR automatic reset option, the device must not close.	If the device does not operate as expected, contact your Schneider Electric Services representative.
4	Press the blue fault-trip reset button on the front cover to reset.	If the blue fault-trip reset button does not reset, contact your Schneider Electric Services representative.
5	Check electrical continuity between terminals 81-82 on SDE1 contact.	In case of electrical non-continuity between terminals, refer to corrective action in step 1.
6	Check electrical continuity between terminals 181-182 on SDE2 contact, if installed.	In case of electrical non-continuity between terminals, refer to corrective action in step 2.
7	Check that the log and the trip/test counter are recorded in control unit log by using display screen or EcoStruxure Power Commission software.
8	Press and hold the Test/Reset on the control unit for 3 seconds to reset the trip cause LEDs.

Checking Operation of Optional RES Remote Reset

DANGER
HAZARD OF ELECTRIC SHOCK, EXPLOSION OR ARC FLASH Take all measures necessary to avoid the risk of electrocution when the external power supply voltage is greater than 30 Vac or 40 Vdc. Failure to follow these instructions will result in death or serious injury.

Step	Action	Corrective Action
1	With the device in tripped position, press the Remote Reset pushbutton connected to the RES Remote Reset option. Result: The blue fault trip button on the front cover must return to the reset position, pushed in the device.	If the blue fault trip button remains in the trip position, it can be due to external conditions. Refer to troubleshooting. If the external conditions are correct: For a MasterPacT MTZ1 device: contact your Schneider Electric Services representative. For a MasterPacT MTZ2/MTZ3 fixed device: replace the RES contact (refer to MasterPacT MTZ2/MTZ3 - SDE2 Fault-Trip Indication Contact / RES Remote Reset - Instruction Sheet) and do the procedure again. For a MasterPacT MTZ2/MTZ3 drawout device, check that the RES contact operates correctly, as follows: 1. Put the device in the withdrawn position. 2. Insert an LV847074SP terminal block at the appropriate location on the device. 3. Apply the RES voltage supply on the LV847074SP terminal block. 4. Close the device. 5. Trip the device by launching an automatic trip curve test in EcoStruxure Power Commission software: If the RES remote reset option resets the device, replace the auxiliary terminal block (refer to MasterPacT MTZ1/MTZ2/MTZ3 - Auxiliary Terminals - Instruction Sheet) and do the procedure again with the device in the test position. If the RES remote reset option does not reset the device, replace the RES contact (refer to MasterPacT MTZ2/MTZ3 - SDE2 Fault-Trip Indication Contact / RES Remote Reset - Instruction Sheet) and do the procedure again.

Step

Action

Corrective Action

1

With the device in tripped position, press the Remote Reset pushbutton connected to the RES Remote Reset option.

Result: The blue fault trip button on the front cover must return to the reset position, pushed in the device.

If the blue fault trip button remains in the trip position, it can be due to external conditions. Refer to troubleshooting.

If the external conditions are correct:

For a MasterPacT MTZ1 device: contact your Schneider Electric Services representative.
For a MasterPacT MTZ2/MTZ3 fixed device: replace the RES contact (refer to MasterPacT MTZ2/MTZ3 - SDE2 Fault-Trip Indication Contact / RES Remote Reset - Instruction Sheet) and do the procedure again.
For a MasterPacT MTZ2/MTZ3 drawout device, check that the RES contact operates correctly, as follows:

1. Put the device in the withdrawn position.

2. Insert an LV847074SP terminal block at the appropriate location on the device.

3. Apply the RES voltage supply on the LV847074SP terminal block.

4. Close the device.

5. Trip the device by launching an automatic trip curve test in EcoStruxure Power Commission software:
- If the RES remote reset option resets the device, replace the auxiliary terminal block (refer to MasterPacT MTZ1/MTZ2/MTZ3 - Auxiliary Terminals - Instruction Sheet) and do the procedure again with the device in the test position.
- If the RES remote reset option does not reset the device, replace the RES contact (refer to MasterPacT MTZ2/MTZ3 - SDE2 Fault-Trip Indication Contact / RES Remote Reset - Instruction Sheet) and do the procedure again.