0614IB1701

Masterpact MTZ Troubleshooting

Troubleshooting the Masterpact MTZ Device

This chapter contains information for troubleshooting problems in a working system. It assumes that the system is correctly installed and that all the commissioning tests (see Masterpact MTZ Commissioning) have been completed successfully. The troubleshooting operations are described under the following headings:

  • Cradle operation

  • Unexpected tripping

  • Mechanical control operations

  • Electrical control operations

  • Control operations from Masterpact MTZ Mobile App

  • Control operations from IO module

  • Control operations from Ecoreach software

  • Control operations from IFE/EIFE webpages

  • Control operations from communication network

  • Control operations from FDM128 display

Layer Model for Troubleshooting Masterpact MTZ Devices

When troubleshooting the device, it is useful to consider a layer model. There are four layers:

  • Communication network

  • Direct connection

  • Electrical

  • Mechanical

The following diagram shows the layers in the device:

If the troubleshooting actions for a layer are not successful, go to the next layer, until you reach the Mechanical layer. If you cannot solve the problem after troubleshooting the Mechanical layer, contact a Schneider Electric field service representative.

Troubleshooting the Masterpact MTZ Device with Assistance

Assistance for troubleshooting is provided by the Masterpact Operation Assistant Digital Module, which is available to be downloaded from GoDigital.

The Masterpact Operation Assistant Digital Module helps to close a circuit breaker after a trip or an opening.

The following features are available:

  • Ready-to-close status

  • Reset (if applicable)

  • Spring charging (if applicable)

  • Diagnostics on related reclosing information, for example, no power supply to shunt trip (MX) , undervoltage release (MN), or spring charging motor (MCH)

Refer to Micrologic X Control Unit - User Guide (DOCA0102EN) for more information about downloading Digital Modules.

Troubleshooting Masterpact MTZ Cradle Operation

Cradle operation includes the following:

  • Racking in and racking out the drawout device.

  • Locking and unlocking the cradle.

Troubleshooting the Cradle

Problem Description

Probable Causes

Solutions

Impossible to insert the racking handle in connected, test, or disconnected position.

A padlock or keylock is present on the cradle or a door interlock is present.

Disable the locking function.

Impossible to turn the racking handle.

The position release button is not pushed in and so the racking handle cannot be rotated.

Push the position release button.

Device cannot be removed from cradle.

Device is not in the disconnected position.

Turn the racking handle until the device is in the disconnected position and the position release button pops out.

Rails are not completely extended.

Pull out the rails of the cradle.

Device cannot be connected (racked in).

Cradle and device do not match (cradle rejection kit pins prevent racking).

Check that the cradle corresponds with the device.

Safety shutters are locked.

Remove the locks.

Device clusters are incorrectly positioned.

Reposition the device clusters.

Cradle is locked in the disconnected position.

Disable the cradle locking function.

The position release button is not pushed in and so the racking handle cannot be rotated.

Push the position release button.

Device has not been sufficiently inserted in the cradle.

Insert the device completely so that it is engaged in the racking mechanism.

Device cannot be locked in the disconnected position.

Device is not in the correct position.

Check the device position by checking that the position release button is popped out.

Racking handle is still in the cradle.

Remove the racking handle and store it.

Device cannot be locked in the connected, test, or disconnected position.

Locking in any position is not enabled.

Adapt the cradle locking mechanism so that the cradle can be locked in any position (see Converting the Masterpact MTZ2/MTZ3 Cradle for Keylocking) .

Device is not in the correct position.

Check the device position by checking that the position release button is out.

Racking handle is still in the cradle.

. Remove the racking handle and store it.

The racking handle cannot be inserted to connect or disconnected the device.

Rails are not completely in.

Push the rails all the way in.

The right-hand rail (chassis alone) or the device cannot be drawn out.

Racking handle is still in the cradle..

Remove the racking handle and store it.

Troubleshooting Unexpected Tripping

Unexpected tripping is tripping that is not caused by a protection function during normal operation or by tests.

Troubleshooting Unexpected Tripping

Problem Description

Symptom

Probable Causes

Solutions

Device opened without any overcurrent electrical fault.

The blue fault-trip reset button is not popped out and no trip cause LED is lit.

Drop in voltage to below the threshold detected by undervoltage release (MN).

Check the voltage and the MN supply circuit (V > 0.85 Vn).

An order (for example loadshedding) sent to the shunt trip (MX) by another device.

Check the parameters of the device that sent the order.

Unnecessary opening order from the shunt trip (MX).

Determine the origin of the order and cancel it.

Device trips in a shorter time than expected after attempt to close the device.

The blue fault-trip reset button is popped out and the Ir LED is lit.

Thermal memory is still active and current on the line is above the Ir threshold.

Check whether there is still an overload on the line. If necessary, make a correction. For details of thermal memory, refer to Masterpact MTZ Micrologic X - Control Unit - User Guide (see Related Documents).

The blue fault-trip reset button is popped out, the Ir or Isd LED is lit, and the ERMS LED is lit.

ERMS is active so device opens at lower protection settings.

The ERMS function (see Engaging the ERMS Function) applies reduced protection settings for use during maintenance. Check whether maintenance is in progress. If ERMS is no longer necessary, disengage it to revert to normal protection settings.

The tripping curves (A or B) have been modified, or the control unit is not set to the usual set of tripping curves (A or B).

This might be a change in intended behavior so not a problem. Check the tripping curve definitions are describing the intended behavior. Modify the definitions if necessary.

Immediate tripping after an attempt to close the device.

The blue fault-trip reset button is popped out and the Ir LED is lit.

Transient overcurrent when closing.

  • Modify the distribution system or the control unit settings.

  • Check the condition of the device before putting it back into service.

Immediate tripping after an attempt to close the device with activation of the blue fault-trip reset button.

Closing on a short-circuit. l

Refer to Masterpact MTZ Critical Cases (see Masterpact MTZ Critical Cases).

Nuisance tripping of the device with activation of the blue fault-trip reset button.

Blue fault-trip reset button is not pushed-in completely.

Push in the blue fault-trip reset button completely.

Transient overcurrent detected on the line and fast instantaneous trip setting is active in Ecoreach software.

Intended behavior. If necessary, adjust the settings in Ecoreach software

Troubleshooting Masterpact MTZ Mechanical Control Operations

Mechanical control operations are operations that are made using the opening or closing pushbuttons.

Device Cannot be Closed by Using the Mechanical Closing Pushbutton

Symptom

Probable Causes

Solutions

The blue fault-trip reset button is popped out.

The blue fault-trip reset button has not been reset.

  • Clear the fault.

  • Push the blue fault-trip reset button.

Device is padlocked or keylocked in the open position.

Unlock the device.

Device is interlocked mechanically in a mechanical interlocking system.

  • Check the position of the other device in the changeover system.

  • Modify the situation to release the interlock.

The closing spring and ready-toclose indicator shows that the mechanism is discharged.

Stored energy mechanism is not charged.

  • Charge the mechanism manually.

  • If the device is equipped with a spring charging motor (MCH) , check the supply of power to the motor. If the problem persists, replace the spring charging motor (MCH) .

The closing spring and ready-toclose indicator shows that the mechanism is charged but the device is not ready to close.

Shunt trip (MX) is powered.

As there is an opening order, determine the origin of the order. The order must be canceled before the device can be closed.

Undervoltage release (MN) is not powered due to an opening order.

As there is an opening order, determine the origin of the order. The order must be canceled before the device can be closed.

Undervoltage release (MN) is not powered due to insufficient voltage power supply.

Check the voltage and the MN supply circuit (V > 0.85 Vn).

If the problem persists, replace the undervoltage release (MN).

Recurring undervoltage trip.

The measured voltage remains at 0 V.

Set the undervoltage behavior parameter, Vmin behavior, to Force to Off when CB is open. For more information, refer to Masterpact MTZ Micrologic X - Control Unit - User Guide (see Related Documents).

The position release button on the cradle of the drawout device is pushed in.

Device is not correctly connected.

Terminate racking in (connection) of the device, making sure that it is fully inserted in the cradle, to the connected position. Check that the position release button is popped out.

Device Cannot be Opened by Using the Mechanical Opening Pushbutton

Probable Causes

Solutions

Operating mechanism malfunction or welded contacts.

Contact your field service representative.

Troubleshooting Masterpact MTZ Electrical Control Operations

Electrical control operations are operations made by an electrical order through an accessory such as a shunt close (XF), shunt trip (MX) or undervoltage release (MN), or by an external pushbutton directly connected to such an accessory,

Troubleshooting depends on the type of accessory, as follows:

  • For communicating accessories, consult the Micrologic X event messages and then refer to Diagnosing Alarms in the Critical Cases chapter of this guide (see Diagnosing Micrologic X Control Unit Alarms).

  • For standard accessories, follow the troubleshooting instructions given in the following tables. If the problem persists, replace the accessory.

Device Cannot be Closed by External Pushbutton/Electrical Order

Symptom

Probable Causes

Solutions

Device is padlocked or keylocked in the open position.

Unlock the device.

Electrical closing order not executed by the shunt close (XF) due to insufficient voltage power supply.

Check the voltage and the XF supply circuit (0.85–1.1 Vn).

If the problem persists, replace the shunt close (XF).

The closing spring and ready-to-close indicator show that the mechanism is charged but the device is not ready to close.

Shunt trip (MX) is powered.

As there is an opening order, determine the origin of the order. The order must be cancelled before the device can be closed.

Undervoltage release (MN) is not powered due to an opening order.

As there is an opening order, determine the origin of the order. The order must be cancelled before the device can be closed.

Undervoltage release (MN) is not powered due to insufficient voltage power supply.

Check the voltage and the MN supply circuit (V > 0.85 Vn).

If the problem persists, replace the undervoltage release (MN).

Shunt close (XF) is continuously supplied, but was not ready-to-close when the closing order was sent (XF shunt close is not wired in series with PF ready-to-close contact).

  • Remove the power supply to the shunt close (XF).

  • If the device is ready-to-close, send the closing order again via the shunt close (XF).

Device Cannot be Opened by External Pushbutton/Electrical Order

Probable Causes

Solutions

Opening order is not executed by the undervoltage release (MN).

Drop in voltage insufficient or residual voltage (V > 0.35 Vn) across the terminals of the undervoltage release (MN).

If the problem persists, replace the undervoltage release (MN).

Opening order is not executed by the shunt trip (MX).

Check the voltage and the MX supply circuit (0.7–1.1 Vn).

If the problem persists, replace the shunt trip (MX).

Device Cannot be Reset Using RES Electrical Remote Reset

Symptom

Probable Causes

Solutions

The blue fault-trip reset button is popped out.

Insufficient supply voltage for the RES electrical remote reset.

Check the voltage and the RES supply circuit (0.7–1.1 Vn).

If the problem persists, replace the RES electrical remote reset.

Additional Troubleshooting—Check Mechanical Operations

If the troubleshooting actions described above do not work, the problem might be in the mechanical or electrical operations of the device. Refer to the troubleshooting information for Mechanical Control Operations (see Troubleshooting Masterpact MTZ Mechanical Control Operations).

Troubleshooting Control Operations from Masterpact MTZ Mobile App

Control operations include commands to open and close the device from the Masterpact MTZ Mobile App.

Device Cannot be Controlled from the Masterpact MTZ Mobile App

Problem Description

Symptom

Probable Causes

Solutions

Device cannot be opened or closed.

The device control mode (see Masterpact MTZ2/MTZ3 Control Modes) is set to Manual.

Change the control mode to Auto (see Setting the Micrologic X Control Mode).

The device control mode (see Masterpact MTZ2/MTZ3 Control Modes) is set to Auto Remote.

Change the control mode to Auto Local (see Setting the Micrologic X Control Mode) .

The Masterpact MTZ Mobile App displays a message to download the Masterpact Operation Assistant Digital Module.

The Masterpact Operation Assistant Digital Module is not installed.

Use Ecoreach software to download and install the Masterpact Operation Assistant Digital Module in the Micrologic X control unit.

The Masterpact MTZ Mobile App displays a message indicating a firmware version mismatch.

The Masterpact MTZ Mobile App on the smartphone is not compatible with the firmware version of the Micrologic X control unit.

Update the Masterpact MTZ Mobile App.

Device cannot be closed.

The close command is inhibited by the IO module.

Enable the close command by using the selector switch wired on a digital input of the IO module (I=1).

The close command is inhibited by a command from the communication network or Ecoreach software.

In Ecoreach software, in the Device Check-up → Devices menu, change the value of the Remote Close Breaker Inhibited parameter from Enabled by communication to Disabled.

Inhibit Closing by IO Module is Not Operational

Problem Description

Probable Cause

Solution

Device can be closed while selector switch wired on a digital input of the IO module is set to Inhibit (I4=0).

The Micrologic X setting Breaker closing by digital input is disabled.

In Ecoreach software, in the General menu, in Breaker Closing Inhibition, change the Allow control by a digital input parameter to Enable.

Device Cannot be Controlled from the Masterpact MTZ Mobile App Connected Through Bluetooth

Problem Description

Probable Cause

Solution

The Bluetooth LED does not light up when you press the Bluetooth activation pushbutton on the Micrologic X control unit.

The Bluetooth function is not enabled in the Micrologic X control unit.

Enable Bluetooth communication in the Micrologic X control unit.

The Micrologic X control unit is not powered.

Check the power supply of the Micrologic X control unit.

The Bluetooth connection was established but the signal is lost.

The smartphone has been moved out

of range.

Place the smartphone within the range for Bluetooth and establish a new connection.

The Bluetooth LED is blinking on the control unit but you cannot see its ID number in the list of devices available.

A smartphone is already connected to the Micrologic X control unit.

Check whether another smartphone within range is also connected to the control unit.

Troubleshooting Control Operation from the IO Module

Control operations include commands to open and close the device from the IO module with the Breaker Operation predefined application.

For information on control operations from the IO module, refer to Enerlin'X IO - Input/Output Application Module for One IEC Circuit Breaker - User Guide (see Related Documents).

Device Cannot be Controlled from the IO Module

Device Cannot be Controlled from the IO Module

Problem Description

Symptom

Probable Causes

Solutions

Device cannot be opened or closed.

The IO module is not configured for Breaker

Operation predefined application 2.

Configure the IO module for Breaker Operation predefined application 2, by using the rotary switch and pressing the test/reset button for 5 seconds to validate the configuration.

The device control mode (see Masterpact MTZ2/MTZ3 Control Modes) is set to Manual.

Change the control mode to Auto (see Setting the Micrologic X Control Mode).

Local open or close orders wired on digital inputs I5 or I6 do not control the device.

The device control mode (see Masterpact MTZ2/MTZ3 Control Modes) is set to Remote.

Change the control mode to Local (see Setting the Micrologic X Control Mode) by using the control mode selector switch wired on the digital input I1 of the IO module (I1=0).

Remote open or close orders wired on digital inputs I2 or I3 do not control the device.

The device control mode (see Masterpact MTZ2/MTZ3 Control Modes) is set to Local.

Change the control mode to Remote (see Setting the Micrologic X Control Mode) by using the control mode selector switch wired on the digital input I1 of the IO module (I1=1).

Device cannot be closed.

The close command is inhibited by the IO module configured in the Breaker Operation predefined application 2.

Enable the close command by using the selector switch wired on the digital input I4 of the IO module (I4=1).

The close command is inhibited by a command from the communication network or Ecoreach software.

In Ecoreach software, in the Device Check-up → Devices menu, change the value of the Remote Close Breaker Inhibited parameter from Enabled by communication to Disabled.

Inhibit Closing by IO Module is Not Operational

Problem Description

Probable Cause

Solution

Device can be closed while selector switch wired on a digital input of the IO module is set to Inhibit (I4=0).

The Micrologic X setting Breaker closing by digital input is disabled.

In Ecoreach software, in the General menu, in Breaker Closing Inhibition, change the Allow control by a digital input parameter to Enable.

Troubleshooting Control Operations from Ecoreach Software

Control operations include commands to open and close the device from Ecoreach software.

For information about control operation from Ecoreach software, refer to Ecoreach Online Help

Device Cannot be Controlled from Ecoreach Software Connected to a Mini USB Port

Problem Description

Symptom

Probable Causes

Solutions

Device cannot be opened or closed.

Ecoreach message: Breaker operation not successful: actuator is in manual mode. Remote breaker commands are not allowed

The device control mode (see Masterpact MTZ2/MTZ3 Control Modes) is set to Manual.

Change the control mode to Auto (see Setting the Micrologic X Control Mode).

Ecoreach message: Breaker operation not successful: Operation mode is Remote

The device control mode (seeMasterpact MTZ2/MTZ3 Control Modes) is set to Auto Remote.

Change the control mode to Auto Local (see Setting the Micrologic X Control Mode).

Ecoreach software does not display the relevant option.

Insufficient access rights.

Log in to Ecoreach software with Administrator rights.

Ecoreach message: Insufficient user rights (incorrect password)

The password is incorrect: invalid password entered or the user has insufficient access rights.

Enter the password again.

In the case of insufficient access rights, check the password validity with the system administrator.

If the password is lost, refer to Masterpact MTZ Micrologic X - Control Unit - User Guide (see Related Documents).

Device cannot be closed.

Ecoreach message: Breaker operation not successful: The requested action is not allowed as it has been previously inhibited

The close command is inhibited by the IO.

Enable the close command by using the selector switch wired on a digital input of the IO module (I=1).

The close command is inhibited by a command from the communication network or Ecoreach software.

In Ecoreach software, in the Device Check-up → Devices menu, change the value of the Remote Close Breaker Inhibited parameter from Enabled by communication to Disabled.

Inhibit Closing by IO Module is Not Operational

Problem Description

Probable Cause

Solution

Device can be closed while selector switch wired on a digital input of the IO module is set to Inhibit (I4=0).

The Micrologic X setting Breaker closing by digital input is disabled.

In Ecoreach software, in the General menu, in Breaker Closing Inhibition, change the Allow control by a digital input parameter to Enable.

Device Cannot be Controlled from Ecoreach Software Connected by IFE, EIFE, or IFM Interface

Symptom

Probable Causes

Solutions

Ecoreach message:

Breaker operation not successful: actuator is in manual mode. Remote breaker commands are not allowed

The device control mode (see page 39) is set to Manual.

Change the control mode to Auto (see page 42).

Ecoreach software does not display the relevant option.

Insufficient access rights.

Log in to Ecoreach software with Administrator rights.

Ecoreach message:

Breaker operation is not successful: Operation mode is Local (Operation via remote control is not allowed)

The device control mode (see page 39) is set to Auto Local.

Change the control mode to Auto Remote (see page 42) .

Ecoreach message:

Insufficient user rights: Incorrect password

The password is incorrect: invalid password entered or the user has insufficient access rights.

Enter the password again. In the case of insufficient access rights, check the password validity with the system administrator.

If the password is lost, refer to Masterpact MTZ Micrologic X - Control Unit - User Guide (see page 7) .

Troubleshooting Control Operations from IFE/EIFE Webpages

Control operations include commands to open and close the device from IFE or EIFE webpages.

For information on control operations from IFE or EIFE webpages, refer to the following guides (see Related Documents):

  • Enerlin'X IFE - Ethernet Switchboard Server - User Guide

  • Enerlin'X IFE - Ethernet Interface for One IEC Circuit Breaker - User Guide

  • Enerlin'X EIFE - Embedded Ethernet Interface for One Masterpact MTZ Drawout Circuit Breaker - Instruction Sheet

Device Cannot be Controlled from IFE or EIFE Webpages

Problem Description

Symptom

Probable Causes

Solutions

Device cannot be opened or closed.

The Close and Open buttons are not displayed on the webpage.

Application control is not enabled in the IFE interface.

Enable application control by pressing the Test button on the front of the IFE interface for 10–15 s.

The user is not logged in as Administrator.

Log in as Administrator.

Message on webpage:

Breaker operation not successful: actuator is in manual mode. Remote breaker commands are not allowed

The device control mode (see Masterpact MTZ2/MTZ3 Control Modes) is set to Manual.

Change the control mode to Auto (see Setting the Micrologic X Control Mode).

Message on webpage:

Breaker operation is not successful: Operation mode is Local (Operation via remote control is not allowed).

The device control mode (see Masterpact MTZ2/MTZ3 Control Modes) is set to Auto Local.

Change the control mode to Auto Remote (see Setting the Micrologic X Control Mode).

Message on webpage:

Close has failed.

NOTE: There is no message if opening action fails.

The remote control commands are disabled by the locking pad on the front of the IFE interface.

Move the locking pad on the front of the IFE interface to the Unlocked position.

The EIFE interface is locked by Ecoreach software.

In Ecoreach software, in the Configure > Communication menu, change the Remote Padlock Position parameter from Locked to Unlocked.

Device cannot be closed.

Message on webpage:

Close has failed.

The close command is inhibited by the IO module.

Enable the close command using the selector switch wired on a digital input of the IO module (I=1).

The close command is inhibited by a command from the communication network or Ecoreach software.

In Ecoreach software, in the Device Check-up > Devices menu, change the Remote Close Breaker Inhibited parameter from Enabled by communication to Disabled.

Inhibit Closing by IO Module is Not Operational

Problem Description

Probable Cause

Solution

Device can be closed while selector switch wired on a digital input of the IO module is set to Inhibit (I4=0).

The Micrologic X setting Breaker closing by digital input is disabled.

In Ecoreach software, in the General menu, in Breaker Closing Inhibition, change the Allow control by a digital input parameter to Enable.

Troubleshooting Control Operations from the Communication Network

Control operations include commands to open and close the device from the communication network.

For information on control operations from the communication network, refer to Masterpact MTZ - Modbus Communication Guide (see Related Documents).

Device Cannot be Controlled with a Remote Controller Connected from IFE, EIFE, or IFM Interface

Problem Description

Symptom

Probable Causes

Solutions

Device cannot be opened or closed.

The device control mode (see Masterpact MTZ2/MTZ3 Control Modes) is set to Manual.

Change the control mode to Auto (see Setting the Micrologic X Control Mode).

The device control mode (see Reset the device (see Resetting Masterpact MTZ Devices) or the Masterpact MTZ Mobile App Power restoration assistant.) is set to Auto Local.

Change the control mode to Auto Remote (see Setting the Micrologic X Control Mode).

The remote control commands are disabled by the locking pad on the front of the IFE interface.

Move the locking pad on the front of the IFE interface to the Unlocked position.

The EIFE interface is locked by Ecoreach software.

In Ecoreach software, in the Configure > Communication menu, change the Remote Padlock Position parameter from Locked to Unlocked.

The opening or closing command is returned with Modbus error code 01.

The password in the opening or closing is incorrect or the user has insufficient access rights.

Send the opening or closing command with a valid password.

In the case of insufficient access rights, check the password validity with the system administrator.

If the password is lost, refer to Masterpact MTZ - Modbus Communication Guide (see Related Documents).

Device cannot be closed.

The close command is inhibited by the IO module.

Enable the close command by using a selector switch wired on a digital input of the IO module (I=1).

The close command is inhibited by a command from the communication network or Ecoreach software.

Use the Set Close Breaker Inhibition command to enable the close order.

Inhibit Closing by IO Module is Not Operational

Problem Description

Probable Cause

Solution

Device can be closed while selector switch wired on a digital input of the IO module is set to Inhibit (I4=0).

The Micrologic X setting Breaker closing by digital input is disabled.

In Ecoreach software, in the General menu, in Breaker Closing Inhibition, change the Allow control by a digital input parameter to Enable.

Troubleshooting Control Operations from FDM128 Display

Control operations include commands to open and close the device from the FDM128 display.

For information on control operations from the FDM128 display, refer to Enerlin’X FDM128 - Ethernet Display for Eight Devices - User Guide (see Related Documents).

Device Cannot be Controlled from the FDM128 Display

Symptom

Probable Causes

Solutions

On FDM128 display, in the Device view, the Control submenu is grayed out.

You are not logged in as Administrator.

Log in to the FDM128 display as Administrator.

The password is incorrect: invalid password entered or the user has insufficient access rights.

Enter a valid password.

In the case of insufficient access rights, check the password validity with the system administrator.

If the troubleshooting actions described above do not work, the problem might be linked to the communication network. Refer to the troubleshooting information for the communication network (see Troubleshooting Control Operations from the Communication Network).

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