Lab.gruppen PLM series Quick Start Manual

Also see for PLM 10000Q: Supplementary guide User manual addendum Specifications Quick start Technical data

Lab.gruppen PLM series Quick Start Manual Manual pdf 12 page image

12 PLM Series Quick Start and Field Reference Guide rev 1.0.65. InstallationThe PLM uses primary switching, which means the mains power is rectified on the primary side of thetransformer. This makes the power supply insensitive to mains frequency variation, and it will operatenormally on line frequencies from 45 to 75 Hz.If the mains plug (AC plug) fitted to the mains cable (AC cord) is not appropriate for your country, it can beremoved and a locally-sourced one fitted instead, observing the color coding in the table below:PowerCon Pin 230 V Version 115 V VersionL Brown BlackN Blue WhiteGreen/Yellow GreenTable 5.5: AC plug configurationIf you are not 100% confident of your competence to replace the mains plug (AC plug), the task shouldbe carried out by qualified personnel.Once a suitable AC supply is connected, the PLM can be turned on using the front panel power switch.When the unit is switched on, the PLM goes through a soft-start sequence as it performs a diagnosticroutine on the internal circuitry. The fans will run at high speed for a short period before dropping to idlespeed, and the power symbol in the power switch will change from red (Standby mode) to green (active).5.6 GroundingAnalog inputs feature Iso-Float™ ground isolation, a technology which combines the benefits of transformer-coupled isolation with the advantages of clean, direct-coupled inputs.The audio converters are galvanically isolated, and not connected to the main ground. High-speed transform-ers and opto-isolators create a barrier between the PLM and the outside electrical environment.In the interests of safety, NEVER disconnect the earth (ground) pin on the mains cable (AC power cord).Use correctly-shielded balanced audio input connections to minimise hum and interference. Refer to section10.2.1 for more information.In-rush current is controlled and limited during thesoft-start sequence, enabling multiple PLMs on thesame AC mains circuit to be powered up simultane-ously.The Iso-Float feature is activated by default, butmay be disabled via the supplied Lake Controllersoftware, or via the PLM’s front panel menu system.