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The safety of your dryer is in the hands of the safety circuit. These are a series of components that are tied together. If one fails, the system will shutdown insuring the safety of your grain dryer.
The contacts for incoming hot and neutral are found in the High Voltage cabinet.
The 120 volt input power to the dryer circuit for dryer controls comes from the bottom side of the transformer and runs to the top of the 8 amp mini-breaker. This breaker should be turned off and the voltage should be checked before turning the mini-breaker on. If the voltage reads anything outside of 125-volts, the supply voltage needs to be checked before powering on the mini-breaker.
Next to the mini breaker is a neutral block, which feeds all neutrals throughout the entire dryer. This neutral is connected to the neutral from the secondary side of the transformer that is standard equipment.
The incoming neutral line is connected to TB5 (white wire) and the hot line is on TB33 (after circuit breaker). The incoming 120-volt supply is an 8 amp mini-breaker.
The Safety Circuit can be viewed on page 4 and 5 of the electrical schematics. Page 4 is the Dryer Control or Fault Control portion of the Safety Circuit while page 5 of the electrical schematics contains the Dryer Safety, or Human Safety portion of the Safety Circuit. Components associated with the Dryer Control, or Fault Control portion of the Safety Circuit include the Fan Motor Overloads, High Limit Switches Linear Limits (if equipped) and Gas Pressure Switches for export model dryers. The components associated with the Dryer Safety, or Human Safety portion of the Safety Circuit are the E-Stops, Safety Relay and Plenum Door Switches for export dryers.
There are two ways to troubleshoot the Safety Circuit. One is through the Safety Circuit page of the Pinnacle 20|20 control while the other involves use of a voltmeter.
The first part of the safety circuit is the Dryer Control or Fault Control portion of the Safety Circuit. Refer to page 4 of the electrical schematics to see this portion of the safety circuit that matches exactly to your particular dryer.
The second part of the safety circuit will help diagnose a dryer shut down. This is the Dryer Safety or Human Safety portion of the Safety Circuit. See page 5 of the electrical schematics to see this portion of the safety circuit that matches exactly to your particular dryer.
Before diagnosing the Safety Circuit, it is recommended to have a good understanding of the Pinnacle 20|20 Control.
The Pinnacle 20|20 Control features a tab on the home page titled Troubleshooting. Pressing this tab populates different options. One of these options is the Safety Circuit tab. Pressing the Safety Circuit tab will bring up a page that visually illustrates the Safety Circuit and all associated components. To troubleshoot the disruption of the Safety Circuit, look for the component on the page that has a grayed out globe next to it as opposed to a green globe. Green globes indicate that the component and that particular part of the Safety Circuit is good. A grayed out globe indicates that the break in the Safety Circuit is associated with that particular component.
One thing to note is that the High Limits and Motor Overloads are wired in series respectively. Meaning, if one of the High Limits or Motor Overloads are tripped, all the High Limits or Motor Overloads proceeding the tripped one will appear on the Safety Circuit screen tripped as well. So the first High Limit or Motor Overload that appears with the grayed out globe should be addressed first as it is very likely that once addressed, all that follow may be good as well.
For more information on diagnosing the Safety Circuit via the HMI, refer to the documentation on the Pinnacle 20|20 control system.
Emergency Stops, also known as "E-Stops" come installed throughout the dryer. There may also be “Customer E-Stop”, installed by other equipped that is tied into the dryer, that if tripped, will disengage the safety circuit. To check, visually inspect if any of these red E-Stop buttons are depressed:
Remote cabinet
Low voltage cabinet
High voltage cabinet
Customer E-Stop (Optional, provided by customer)
Customer connections are for remote equipment and are used to interface the grain dryer with fill and takeaway equipment. The grain dryer does not supply power for these interfaces. An auxiliary power source should be used to power customer equipment.
F1-F2 = Fill equipment status
F3-F4 = Fill 2 dry contacts
F5-F6 = Fill 1 dry contacts
F1 and F2 is a signal to the PLC confirming that customer fill equipment is not in a fault condition and can be started.
F3 and F4 are a dry set of normally open contacts that close when the dryer fill cycle begins. When this closes (when the call for grain happens), the dryer will start all the customer’s equipment that is associated with Fill 2. It is the last of the fill equipment to stop.
F5 and F6 are a dry set of normally open contacts that close when the dryer fill cycle begins. When this closes (after the delay following the call for grain expires), the dryer will start all the customer’s equipment that is associated with Fill 1. Fill 1 equipment will stop after the call for grain but before fill 2 equipment stops.
T1-T2 = Takeaway equipment status
T3-T4 = Takeaway 2 dry contacts
T5-T6 = Takeaway 1 dry contacts
T1 and T2 is a signal to the PLC confirming that customer takeaway equipment is not in a fault condition and can be started.
T3 and T4 are a dry set of normally open contacts that close when the dryer Takeaway START button is pressed. This starts all customer’s equipment associated with Takeaway 2 immediately after the button is pressed. Equipment tied to this signal will stop after the Takeaway STOP button is pressed and the Takeaway 2 Stop Delay has elapsed.
T5 and T6 are a dry set of normally open contacts that close when the dryer Takeaway START button is pressed and the Takeaway 1 Start Delay has elapsed. This starts all customer’s equipment associated with Takeaway 1. Equipment tied to this signal will stop immediately after the Takeaway STOP button is pressed.
E1-E2 = Customer E-Stop status
E3-E4 = Safety Relay Circuit 1
E5-E6 = Safety Relay Circuit 2
E1 and E2 is a signal to the PLC confirming that all customer equipment included in the safety circuit are satisfied
E3 and E4 breaks the 24V signal and initiates an emergency shutdown of the dryer.
E5 and E6 breaks the 24V signal and initiates an emergency shutdown of the dryer.
Breaking either E3/E4 or E5/E6 will result in the same emergency shutdown of the dryer
The safety circuit can be diagnosed by using a voltmeter to determine which component(s) is keeping the safety circuit from closing. Below will guide you in checking the following components, if equipped: Fan protectors, high limits, linear limits, high gas pressure switches, and plenum door switches.
The Safety Circuit can also be diagnosed by using a DC voltmeter and the dryer schematic. Using the schematic as a guide, use the voltmeter to look for 24 vdc at terminals in the Low Voltage Cabinet. Be sure the Voltmeter is first set to read DC Voltage which is depicted with a straight line next to the V as opposed to a wavy line which depicts AC voltage. Take the black lead of the Voltmeter and place it in Terminal 320 (TB320). Next, move the red lead of the voltmeter to the first terminal of the Safety Circuit (TB341), followed in order by TB401 as shown below until 24 Volts no longer appears and 0 Volts measures on the Voltmeter instead.
TB341 Beginning of the safety circuit after circuit breaker #341
TB401 Fan protector #1
TB402 Fan protector #2 (if equipped)
TB403 Fan protector #3 (if equipped)
TB404 Fan protector #4 (if equipped)
TB405 Fan protector #5 (if equipped)
TB406 Fan protector #6 (if equipped)
TB407 Fan protector #7 (if equipped)
TB408Fan protector #8 (if equipped)
The dryer will only have the number of fan protector terminals as the dryer has fans
TB421 High limit #1
TB422 High limit #2 (if equipped)
TB423 High limit #3 (if equipped)
TB424 High limit #4 (if equipped)
TB425 High limit #5 (if equipped)
TB426 High limit #6 (if equipped)
TB427 High limit #7 (if equipped)
TB428 High limit #8 (if equipped)
The dryer will only have the number of high limits as the dryer has burners.
TB431 Linear Limit #1 (if equipped)
TB432 Linear Limit #2 (if equipped)
TB433 Linear Limit #3 (if equipped)
TB434 Linear Limit #4 (if equipped)
TB435 Linear Limit #5 (if equipped)
TB436 Linear Limit #6 (if equipped)
If the dryer is an export model dryer, the following items will be included in the Safety Circuit.
TB451 High gas pressure switch #1
TB452 High gas pressure switch #2
TB453 High gas pressure switch #3
TB454 High gas pressure switch #4
TB455 High gas pressure switch #5
TB456 High gas pressure switch #6
TB457 High gas pressure switch #7
TB458 High gas pressure switch #8
The dryer will only have the number of high gas pressure switches as they dryer has burners. If there is 24 vdc at terminal #460, the safety circuit is complete.
Although the following items are not in series with the previously mentioned items, tripping any of these items will disengage the safety circuit and produce a red warning screen.
If the dryer is an export model, the following items, if tripped will disengage the safety circuit.
TB491 Plenum door #1 safety switch
TB492 Plenum door #2 safety switch
TB493 Plenum door #3 safety switch
TB494 Plenum door #4 safety switch
TB495 Plenum door #5 safety switch
TB496 Plenum door #6 safety switch
TB497 Plenum door #7 safety switch
TB498 Plenum door #8 safety switch
This section will help with diagnosing in cases of a shut down. Common situations are explained with resolution(s) to get the dryer back to operation.
Listed below are the fault codes and associated descriptions of the faults. Also provided are a list of actions to help resolve the issues.
Output current has exceeded trip level.
Sudden load change or stall.
Check motor load and mechanics.
Insufficient acceleration time.
Check acceleration time (2202 and 2205). Check the possibility of using vector control.
Incorrect motor data.
Check that motor data (Group 99) is equal to motor rating plate values. If using vector control, perform ID run (9910).
Excessive intermediate circuit DC voltage. DC overvoltage trip limit is 420 V for 200 V drives and 840 V for 400 V drives.
Supply voltage is too high or noisy.
Static or transient overvoltage in the input power supply.
Check input voltage level and check power line for static or transient overvoltage.
If the drive is used in a floating network, DC overvoltage fault may appear
In a floating network, remove the EMC screw from the drive.
If the overvoltage fault appears during deceleration, possible causes are:
Overvoltage controller disabled.
Deceleration time is too short.
Faulty or undersized braking chopper.
Check that overvoltage controller is on (parameter 2005 OVERVOLT CTRL).
Check deceleration time (2203, 2206).
Check brake chopper and resistor (if used). DC overvoltage control must be deactivated when brake chopper and resistor is used (parameter 2005 OVERVOLT CTRL). Retrofit drive with brake chopper and brake resistor.
Drive IGBT temperature is excessive. The fault trip limit depends on the drive type and size.
Ambient temperature is too high.
Check ambient conditions.
Airflow though the inverter is not free.
Check air flow and free space above and below the drive.
Fan is not working properly.
Check fan operation.
Overloading of the drive.
50% overload is allowed for one minute in ten minutes. If higher switching frequency (parameter 2606) is used.
Short-circuit in motor cable(s) or motor.
Damaged motor or motor cable.
Check motor and cable insulation.
Check motor winding.
Internal fault of the drive. Drive gives an overcurrent fault after start command even when the motor is not connected (use scalar control in this trial).
Replace the drive.
Missing input power line phase.
Measure the input and DC voltage during start, stop and running by using a multimeter or check parameter 0107 DC BUS VOLTAGE.
Blown fuse.
Rectifier bridge internal fault.
Analog input AI1 signal has fallen below limit defined by parameter 3021 AI1 FAULT LIMIT.
Analog input signal is weak or does not exist.
Check the source and wire connections of the analog input.
Analog input signal is lower than fault limit.
Check parameters 3001 AI<MIN FUNCTION and 3021 AI1 FAULT LIMIT.
Analog input AI1 signal has fallen below limit defined by parameter 3022 AI2 FAULT LIMIT.
Analog input signal is weak or does not exist.
Check the source and wire connections of the analog input.
Analog input signal is lower than fault limit.
Check parameters 3001 AI<MIN FUNCTION and 3021 AI1 FAULT LIMIT.
Motor temperature estimation is too high.
Excessive load or insufficient motor power.
Check motor ratings, load and cooling.
Incorrect start-up data.
Check start-up data.
Check fault function parameters 3005...3009.
Minimize IR compensation to avoid heating (parameter 2603 IR COMP VOLT).
Check frequency of the motor (low running frequency of motor with high input current can cause this fault).
Let the motor cool down. The necessary cooling time period depends on the value of parameter 3006 MOT THERM TIME. Motor temperature estimation is counted down only when the drive is powered on.
Check value of fault limit.
Check that actual number of sensors corresponds to value set by parameter 3501 SENSOR TYPE.
Let the motor cool down.
Ensure proper motor cooling: Check the cooling fan, clean cooling surfaces etc.
Control panel selected as active control location for drive has ceased communicating
Check panel connection.
Check fault function parameters.
Check parameter 3002 PANEL COMM ERR.
Check control panel connector.
Refit control panel in mounting platform.
If the drive is in external control mode (REM) and is set to accept start/stop, direction command or references through control panel:
Check group 10 START/STOP/D
Motor ID run is not completed successfully.
Check motor connection.
Check start-up data (group 99 START-UP DATA).
Check maximum speed (parameter 2002).
It should be at least 80% of motor nominal speed (parameter 9908).
Motor is operating in stall region due to eg excessive load or insufficient motor power.
Check motor load and drive ratings.
Check fault function parameters 3010...3012.
External fault 1
Check external devices for faults.
Check parameter 3003 EXTERNAL FAULT 1 setting.
External fault 2
Check external devices for faults.
Check parameter 3004 EXTERNAL FAULT 2 setting.
Drive has detected earth (ground) fault in motor or motor cable.
Check motor.
Check motor cable. Motor cable length must not exceed maximum specifications.
Disabling earth fault (ground fault) may damage drive.
Drive internal fault.
Internal short-circuit may cause earth fault indication.
This has happened if fault 0001 appears after disabling the earth fault.
Replace the drive.
Motor load is too low due to release mechanism in driven equipment.
Check for problem in driven equipment. Check fault function parameters 3010...3012.
Check motor power against drive power.
Temperature of the drive exceeds the operating level of the thermistor.
Check that the ambient temperature is not too low.
Drive internal fault. Thermistor used for drive internal temperature measurement is open or short-circuited.
Replace the drive.
Drive internal fault. Current measurement is out of range.
Replace the drive.
Intermediate circuit DC voltage is oscillating due to missing input power line phase or blown fuse.
Check input power line fuses and installation.
Check for input power supply imbalance.
Check the load.
Trip occurs when DC voltage ripple exceeds 14% of nominal DC voltage.
Check fault function parameter 2619 DC STABILIZER.
Communication fault between pulse encoder and pulse encoder interface module or between module and drive.
Check pulse encoder and its wiring, pulse encoder interface module and its wiring and parameter group 50 ENCODER settings.
Motor is turning faster than 120% of he highest allowed speed due to incorrectly set minimum/maximum speed, insufficient barking torque or changes in load when using torque reference. Operating range limits are set by parameters 2001 MINIMUM SPEED and 2002 MAIXIMUM SPEED (in vector control) or 2007 MINIMUM FREQ and 2008 MAXIMUM FREQ (in scalar control)
Check minimum/maximum frequency setting (parameters 2001 MINIMUM SPEED and 2002 MAXIMUM SPEED).
Check adequacy of motor braking torque.
Check applicability of torque control.
Check need for brake chopper and resistor(s).
Internal configuration file error
Replace the drive.
Fieldbus communication break
Check status of fieldbus communication.
Check fault function parameter 3018 COMM FAULT FUNC and 3019 COMM FAULT TIME settings.
Check connections and/or noise on the line.
Check if master can communicate.
Configuration file reading error
Error in reading the configuration files of the embedded fieldbus.
See fieldbus user's manual.
Trip command received from fieldbus
Fault trip was caused by fieldbus.
See fieldbus user's manual.
Motor circuit fault due to missing motor phase or motor thermistor relay (used in motor temperature measurement) fault.
Check motor and motor cables.
Check motor thermistor relay (if used).
Incorrect input power and motor cable connection (ie input power cable is connected to drive motor connection).
Possible power wiring error detected.
Check that input power connections are not connected to drive output.
Fault can be declared if input power is delta grounded system and motor cable capacitance is large.
This fault can be disabled by parameter 3023 WIRING FAULT.
Loaded software is not compatible.
Loaded software is not compatible with the drive.
Contact your local ABB representative.
Drive control board overheated. Fault trip limit is 95 degrees C.
Check for excessive ambient temperature.
Check for fan failure.
Check for obstructions in air flow.
Check the dimensioning and cooling of cabinet.
STO (Safe torque off) requested and it functions correctly.
Parameter 3025 STO OPERATION is set to react with fault.
If this is not expected reaction to safety circuit interruptions, check cabling of safety circuit connected to STO terminals X1C.
If different reaction is required, change value of parameter 3025 STO OPERATION. Reset fault before starting.
STO (Safe torque off) input channel 1 has not de-energized, but channel 2 has.
Opening contacts on channel 1 might have been damaged or there is a short-circuit.
Check STO circuit cabling and opening of contracts in STO circuit.
STO (Safe torque off) input channel 2 has not de-energized, but channel 1 has.
Opening contacts on channel 2 might have been damaged or there is a short-circuit.
Check STO circuit cabling and opening of contacts in STO circuit.
Drive internal error.
Replace the drive.
Drive internal error.
Replace the drive.
Drive internal error.
If fieldbus is in use, check the communication, settings and contacts.
Write down fault code and contact your local ABB representative.
Drive internal error.
If fieldbus is in use, check the communication, settings and contacts.
Write down fault code and contact your local ABB representative.
Drive internal error.
If fieldbus is in use, check the communication, settings and contacts.
Write down fault code and contact your local ABB representative.
Drive internal error.
If fieldbus is in use, check the communication, settings and contacts.
Write down fault code and contact your local ABB representative.
Incorrect speed/frequency limit parameter setting.
Check parameter settings. Check that following applies:
2001 MINIMUM SPEED < 2002 MAXIMUM SPEED
2007 MINIMUM FREQ < 2008 MAXIMUM FREQ
2001 MINIMUM SPEED / 9908 MOTOR NOM SPEED, 2002 MAXIMUM SPEED / 9908 MOTOR NOM SPEED, 2007 MINIMUM FREQ / 9907 MOTOR NOM FREQ are within range.
Incorrect analog input AI signal scaling.
Check parameter group 13 ANALOG INPUTS settings. Check that following applies:
1301 MINIMUM AI1 < 1302 MAXIMUM AI1
1304 MINIMUM AI2 < 1305 MAXIMUM AI2
Incorrect analog output AO signal scaling.
Check parameter group 15 ANALOG OUTPUTS settings. Check that following applies:
1504 MINIMUM AO1 < 1505 MAXIMUM AO1.
Incorrect motor nominal power setting.
Check parameter 9909 MOTOR NOM POWER setting. Following must apply:
1.1 < (9906 MOTOR NOM CURR - 9905 MOTOR NOM VOLT 1.73 / PN) < 3.0
Where PN = 1000 - 9909 MOTOR NOM POWER (if units are in kW)
or PN = 746 - 9909 MOTOR NOM POWER (if units are in hp).
Incorrect relay output extension parameters.
Check parameter settings. Check that following applies:
Output relay module MREL-01 is connect to drive. See parameter 0181 EXT MODULE STATUS.
1402 RELAY OUTPUT 2, 1403 RELAY OUTPUT 3 and 1410 RELAY OUTPUT 4 have non-zero values.
See MREL-01 output relay module user's manual (3AUA0000035974 [English]).
Fieldbus control has not been activated.
Check field bus parameter settings.
Incorrect motor nominal speed/frequency setting.
Check parameter settings. Following must apply for induction motor:
1 < (60 - 9907 MOTOR NOM FREQ / 9908 MOTOR NOM SPEED) < 16
0.8 < 9908 MOTOR NOM SPEED / (120 - 9907 MOTOR NOM FREQ / Motor poles) < 0.992
Following must apply for permanent magnet synchronous motor:
9908 MOTOR NOM SPEED / (120 - 9907 MOTOR NOM FREQ / Motor poles) = 1.0
Incorrect voltage to frequency (U/f) ratio voltage setting.
Check parameter 2610 USER DEFINED U1...2617 USER DEFINED F4 settings.
Only two of the following can be used simultaneously: MTAC-01 pulse encoder interface module, frequency input signal or frequency output signal.
Disable frequency output, frequency input or encoder:
Change transistor output to digital mode (value of parameter 1804 TO MODE = 0 [DIGITAL]), or
Change frequency input selection to other value in parameter groups 11 REFERENCE SELECT, 40 PROCESS PID SET 1, 41 PROCESS PID SET 2 and 42 EXT / TRIM PID, or
Disable (parameter 5002 ENCODER ENABLE) and remove MTAC-01 pulse encoder interface module.
Listed below are common issues that may occur while operating your Mathews Company grain dryer along with suggestions on what to do.
In the event that your dryer comes equipped with a soft starter and you run into an error code, listed below are the display faults that will show up on the main display. Provided below are the error codes and associated recovery suggestions.
Fault in software.
Disconnect and reconnect the control supply voltage (Us) and make a restart. See chapter 5.2.4.
If same fault remains, contact your ABB Sales Office.
PSE parameter fault.
Check parameter PSE and select correct setting corresponding to the type of PSE Soft starter.
By-pass relays closed after transport, (PSE18...PSE170 only)
Switch off operational voltage and control supply voltage.
Switch on voltage in correct succession.
Control supply voltage on terminals 1 and 2.
Wait 4 seconds and then switching on operational voltage on terminals L1, L2 and L3.
The by-pass contractor's/relays are not opening
Check and replace relay.
Contact your ABB Sales Office for replacement kit.
Thyristors short circuit.
Check and replace thyristor.
Contact your ABB Sales Office for replacement kit.
Power loss on control supply circuit.
Check control supply voltage.
By-pass relays/contractor's open or by-pass relays/contractor's do not close.
Check and replace by-pass relay/contactor.
Contact your ABB Sales Office for replacement kit.
Thyristors overheated. If the fault remains after reset, the hear sink temperature is too high.
Check that the fans are working in a proper way. See chapter 9.1.
Check that the cooling airways are free from dirt and dust. See chapter 9.1.
Check that the ambient temperature is not too high. Derating is required above 40 degrees C (104 degrees F). See chapter 3.6.
Check that the mounting angle is not more than 30 degrees. See chapter 4.2.4.
Check that PSE Soft starter is not too small for the number of starts and stops performed each hour.
Fuse blown.
Check and replace fuses in all three phases.
Power loss on operational current on one or several phases.
Check and correct supplying operational network.
The main contactor or circuit breaker is open.
Check and close contractor/breaker or any external switching device.
Main contactor opens too quickly at stop.
Control main contactor with Run signal relay on terminal 4. See chapter 5.2.4.6.
Add a time relay before contractor opening
If Stop Ramp is not needed, set Stop Ramp Time to 0.
Excessive disturbances in the operational supplying network.
Check and correct supplying operational network.
Short power loss on all three phases in the operational network.
Check and correct supplying operational network.
Operational current too low or lost on one or several phases.
Check and correct supplying network.
Phase loss on line side or motor side.
Check and correct supplying network.
See Phase loss EF14.
Thyristors not able to conduct.
Check and replace PCB/thyristor.
Contact your ABB Sales Office for replacement kit.
The motor is too small (current is out of measuring range).
Check that the soft starter corresponds to the motor size.
Fault on fieldbus connection or FieldBusPlug accessory.
Check that the correct type of FieldBusPlug accessory is used.
Contact your ABB Sales Office.
Check that the connection of the FieldBusPlug is correct.
Check the connection of the fieldbus accessory.
Perform a reset on any active event.
Fieldbus communication is not working.
Check that the correct type of FieldBusPlug accessory is used.
Contact your ABB Sales Office.
Check that the connection of the FieldBusPlug is correct.
Check the connection of the fieldbus accessory.
Check the PLC configuration.
Possible Fieldbus fault.
PLC is not running.
Put PLC in run mode.
Check PLC configuration.
Fieldbus Control is enabled on a non-fieldbus application.
Set Fieldbus Control parameter to OFF.
The control supply voltage is too low on terminals 1 and 2.
Check and correct control supply voltage.
Short power loss on the control supply network.
Check control supply network for short interruptions.
Operational current higher than 8 x Ie.
Check if the motor is locked or running stiff.
Check the bearings in the motor and connected equipment.
Check if the load on the motor is too heavy.
Check isolation on the motor windings.
Replace the motor.
Load on motor higher than motor rating and corresponding selected EOL Class.
At Start
Check and correct the reason for the overload.
Increase Initial/End Voltage.
Check the motor rating plate for Ie.
Increase Current Limit.
Make Start Ramp Time shorter.
Too many starts and stops during a short time.
At Start
Chose a motor with more power and a softs tarter rated for higher current.
Check and correct the reason for the overload.
Check that the ramp time for start is not too long.
Check that correct EOL Class is used.
The motor has been exposed to an overload condition because the current over a certain time is too high. (The load on the motor shaft is too high).
Continuous run
Check the rating of the plate for Ie.
Check operational voltage.
Chose a motor with more power and a soft starter rated for higher current.
Check and correct the reason for the overload.
Check that correct EOL Class is used.
The motor current is below set level and time.
Check and correct the reason for the underload.
Check that the setting Ie is according to the operation conditions. See chapter 7.5.1.
Check that the Underload Protection parameter is set according to operational conditions. See chapter 7.5.10.
The motor is running stiff for some reason. A damaged bearing or a stuck load could be possible causes.
Check the bearings of the motor and load.
Decrease in operational voltage can give a higher operational current.
Check voltage.
Fault in software.
Try again.
If the same failure remains, contact your local ABB Sales Office.
No parameters stored in the PSEEK.
Load the parameters that you want to transfer from selected PSE.
If the same failure remains, contact your local ABB Sales Office.
Fault in software.
Try again.
If the same failure remains, contact your local ABB Sales Office.
Not possible to transfer parameters to PSE when it is in TOR.
Return the PSE to idle state and try again.
If the same failure remains, contact your local ABB Sales Office.