Rockwell-automation 21G PowerFlex 750-Series AC Drives Programming Man Manual de usuario descargar pdf (Pagina 313)

Rockwell Automation Publication 750-PM001J-EN-P - October 2014 313

Troubleshooting Chapter 6

Drive Fault and Alarm

Descriptions

The table below contains a list of drive-specific faults and alarms, the type of fault

or alarm, the action taken when the drive faults, the parameter used to configure

the fault or alarm (if applicable), and a description and action (where applicable).

The faults and alarms listed in Tab le 1 0

only apply to non Integrated Motion

applications. See Table 14 on page 522

for a list of Integrated Motion faults.

Table 10 - Drive Fault and Alarm Types, Descriptions and Actions

Event

No.

Fault/Alarm Text Type Fault

Action

Configuration

Parameter

Auto

Reset

Description/Action(s)

0No Entry

2 Auxiliary Input Resettable

Fault

Coast 157

[DI Aux Fault] Y An auxiliary input interlock is open. A condition within the application is

not allowing the drive to energize the motor and the digital input

assigned by P157 [DI Aux Fault] has forced this fault.

3 Power Loss Configurable 449 [Power Loss Actn] Y The DC bus voltage remained below the [Pwr Loss n Level] of nominal

for longer than the time programmed in [Pwr Loss n Time].

4 UnderVoltage Configurable 460

[UnderVltg Action] Y If the bus voltage, P11 [DC Bus Volts] falls below the value set in P461

[UnderVltg Level] an undervoltage condition exists.

5 OverVoltage Resettable

Fault

Coast Y The DC bus voltage exceeded the maximum value.

See P11 [DC Bus Volts].

7 Motor Overload Configurable 410

[Motor OL Actn] Y An internal electronic overload trip has occurred.

See P7 [Output Current], P26 [Motor NP Amps, P413 [Mtr OL Factor],

and/or P414 [Mtr OL Hertz].

8 Heatsink OvrTemp Resettable

Fault

Coast Y The heatsink temperature has exceeded 100% of the drive temperature.

Heatsink over temperature occurs between 115…120 °C. The exact

value is stored in drive firmware.

See P943 [Drive Temp Pct] and/or P944 [Drive Temp C].

9 Trnsistr OvrTemp Resettable

Fault

Coast Y The output transistors have exceeded the maximum operating

temperature.

See P941 [IGBT Temp Pct] and/or P942 [IGBT Temp C].

If using the drive on a chiller plate, P38 [PWM Frequency] must be set to

2 kHz.

10 DynBrake OvrTemp Alarm 1 The dynamic brake resistor has exceeded its maximum operating

temperature.

Check settings of parameters P382 [DB Resistor Type] through P385 [DB

ExtPulseWatts].

12 HW OverCurrent Resettable

Fault

Coast Y The drive output current has exceeded the hardware current limit.

Megger test wiring to motor.

13 Ground Fault Resettable

Fault

Coast Y A current path to earth ground greater than 25% of drive rating has

occurred.

14 Ground Warning Configurable 466

[Ground Warn Actn] The ground current has exceeded the level set in P467 [Ground Warn

Lvl].

15 Load Loss Configurable 441 [Load Loss Action] The output torque current is below the value programmed in P442 [Load

Loss Level] for a time period greater than the time programmed in P443

[Load Loss Time].

17 Input Phase Loss Configurable 462

[InPhase LossActn] The DC bus ripple has exceeded a preset level. Make these checks and

adjustments in this order.

• Check input impedance balance.

• Increase the setting of P463 [InPhase Loss Lvl] to make the drive less

sensitive.

• Tune the bus regulator or speed regulator to mitigate the affects of

dynamic cyclic loads on DC bus ripple.

• Disable the fault by setting P462 [InPhase LossActn] to 0 “Ignore”

and use an external phase loss detector such as a Bulletin 809S relay.

18 Motor PTC Trip Configurable 250

[PTC Cfg] Motor PTC (Positive Temperature Coefficient) over temperature.

19 Task Overrun Alarm 1 System resource utilization is at or above 90% of capacity. Review the

system resource allocation table on page 311

1 2 ... 308 309 310 311 312 313 314 315 316 317 318 ... 543 544

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