Operation Manual

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Table Of Contents

Appendix

PLM Series Operation Manual Rev 1.3.0

9. Appendix

9.1 Faults and Warnings Overview

Fault or warning conditions are indicated by the LED shown in Figure 7-3 on page 34, and also by LEDs associ-

ated with the inputs and outputs on the PLM. As the LEDs indicate several types of faults or warnings, a

brief textual description of the fault or warning is provided on the LCD display. Section 7.8.2 on page 34 details

the fault and warning indications that appear on the front panel. Table 9-1 lists the events that may have

triggered each fault or warning condition.

Model Displayed Text Event Log Text Category Description

ALL AMP CH. MUTE Amp Channel Mute Mute The audio signal has been muted in the

power output stage.

ALL ANALOG IN

FAULT

Frame Fault: Analog Input Fault The analog input signal is corrupt due

to DC on the analog input, or there is an

issue with the internal A/D converter.

20000Q ATL ACTIVE N/A Warning The output power is limited due to high

amplier channel temperature - the amp

channel temperature limiter is active.

ALL AUDIO FAULT Frame Fault: Audio Interface Fault An internal audio fault has arisen and the

unit needs servicing.

20000Q BEL ACTIVE N/A Warning Breaker Emulation Limiter present as the

nominal current reached. Improve the

power distribution and adjust the BEL

settings.

ALL CAL ACTIVE n/a Fault Ensures that the PLM’s power output

stages are not overloaded. This should

never happen during normal program

material.

20000Q CHECK AC

MAINS

Frame fault: Check AC Mains Fault The PSU received unstable mains, check

the mains conguration.

ALL CLOCK SLIPPING AES Clock slipping Warning The AES or Dante clock is slipping; verify

clock selection / generator. This will

cause high THD on signal, and if Dante

is running will result in an unstable signal

distribution.

ALL CTRL OFFLINE N/A Warning The PLM is no longer able to communi-

cate with the Lake Controller.

ALL CURRENT CLIP n/a Clip PLM’s power output stage current has

exceeded the xed safe maximum and

the Current Peak Limiter has become

active to limit it.

ALL INPUT CLIP n/a Clip The input signal level is too high and is

causing clipping at the input stage