Cooling And Fan Operation; Operating Voltage; Product Overview - Lab.gruppen PLM+ Series Quick Start Manual

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PLM + SERIES

Cooling and fan operation

PLM+ devices use a forced-air cooling system with airflow from front to rear, allowing high continuous power levels without thermal problems. To facilitate maximum
air flow, ensure that no objects such as rack doors or lids are placed at the front or rear of the rack. Never attempt to reverse the airflow. Make sure an adequate air
supply is provided in front of the PLM+ device, and that the rear of the device has sufficient space to allow air to escape. It is recommended to keep the ambient
temperature around the device as cool as possible. An increased temperature can have a significant negative impact on the expected lifetime on the components
inside the PLM+ Series device.
Note: Fit solid blanks (not ventilation blanks) to unused rack spaces to ensure effective air circulation. Leaving gaps in between items of equipment degrades the
effectiveness of forced-air cooling.
If installing one or more PLM+ devices in a rack with other fan-cooled equipment, confirm that all other equipment also uses front-to-rear airflow for cooling.
If this precaution is not observed, there is a risk of overheating, as units with the reverse airflow will be drawing in air which has already been heated by the
PLM+ Series devices.
The PLM+ device is equipped with a sophisticated temperature sensing system which protects it from any overheating which may occur as a result of
inadequate ventilation.

Operating voltage

PLM+ Series has a universal power supply and its mains nominal voltage is 100 – 240 V. The PLM+ series can be ordered with a variety of mains plugs suitable for
different territories.
Note: In-rush current is controlled and limited during the soft-start sequence. This enables multiple PLM+ Series Devices on the same AC mains circuit
to be turned on simultaneously.
Grounding
Use correctly-shielded balanced audio input connections to minimize hum and interference.
PLM+ Series must be grounded (earthed) with the safety ground pin to the mains distribution system.
NEVER disconnect the earth (ground) pin on the mains cable (AC power cord).

Product overview

Front panel
Additional information on operations using front panel controls is available in the full PLM+ Series Operation Manual.
(1) (2) (5) (4)
(6) (7) (8)
(1) Handles – Handles should be used when carrying, and when fitting into or removing from a rack. Ensure that rack doors or covers have sufficient depth to clear
the handles.
(2) Dust Filters – Two dust filters are located behind metal covers. Loosen thumbscrews behind the handles to remove covers and
remove filter elements for cleaning.
Note: NEVER operate this device without the dust filters in place.
(3) Display – The display illuminates when device is on. Brightness and contrast can be adjusted via the front panel menu. A Screen Saver function turns off the
display after 30 minutes of no activity. Press any button to turn on the display.
(4) Standby – Switches device between On and Standby power modes.
(3) (10) (2) (1)
(9) (12) (11)
(5) Mute Enable – Selection of MUTE ENABLE allows dynamic function buttons to operate as Mute controls for the module inputs and power output channels.
The MUTE ENABLE button flashes when the mode is selected; a subsequent press deselects the mode. If left activated, MUTE ENABLE mode will automatically
disable two minutes after last mute action.
(6) Meter – Successive presses of the METER button scroll through meter views: Amp, Temperature, Input and Module meters, returning to Home. Pressing METER
from Menu Mode returns display to Meter Mode Home view.
(7) Menu – Pressing the MENU button changes the display to the top level menu, with dynamic function buttons enabling access to various information displays
and function settings.
(8) Dynamic Function Buttons with LEDs (Left of LCD) – The function of these buttons change according to the currently selected view or menu.
• In Menu Mode they are used for menu navigation and for parameter selection
• In Meter mode they provide Mute/Unmute function for the four inputs in conjunction with MUTE ENABLE.
• Internal mute point(s) depend on selected meter view. The four LEDs display mute status (red= mute, green = unmute) as well as fault and warning indications.
Global faults and warnings are indicated by simultaneous illumination of all four LEDs. Please refer to full Operation Manual for more information.
(9) Dynamic Function Buttons with LEDs (Right of LCD) – The function of these buttons change according to the currently selected view or menu.
• In Menu Mode they are used for menu navigation and for parameter selection
• In Meter mode they provide Mute/Unmute function in conjunction with MUTE ENABLE. Internal mute point(s) depend on selected meter view. Please refer to
full Operation Manual for more information.
All LEDs provide mute, clip, fault and warning indication for the power output channels.
Communication LED – Steady white illumination indicates Module/Frame is selected in Lake Controller; flashing indicates communication with Lake
(10)
Controller. Brightness is adjustable in the Frame page of Main menu.
Rotary Encoder – Turning the encoder modifies various parameters in the menu. The ring around the encoder illuminates whenever a menu item is selected
(11)
that permits adjustment of values. In Home view, the encoder is used to scroll through Meter views.
Exit – Pressing EXIT returns the menu up one level when navigating in Menu mode. In Meter mode, EXIT returns display to Home view.
(12)
Rear panel
(3) (1)
INPUT 1 INPUT 2 INPUT 3
SPEAKER OUTPUTS
CH 1 CH 3
CH 2 CH 4
ANALOG WITH I SO- F LOAT
TM
CLASS 3 WIRING
Ser. N:o Removed!
SPEAKER OUTPUTS
(4)
1+/- CH 1+/- 1+/- CH 3+/-
CLASS 3
2+/- CH 2+/- 1+:+ 1+/- CH 1+/- 3+/- CH 3+/- 2+/- CH 4+/-
WIRING
BRIDGE CH 1 & 2: 2- : - 2+/- CH 2+/- 4+/- CH 4+/- BRIDGE CH 3 & 4: 1+ : +, 2- : -
Ser. N:o
Removed!
INPUT 1 INPUT 2 INPUT 3 INPUT 4 INPUT 1-2 INPUT 3-4 1Gbps PRIM ACT 1Gbps
LINK
PIN 1: SCRN 2: POS 3: NEG
ANALOG WITH ISO FLOAT TM AES/EBU SWITCHED 00/ 000 Base-TX 1 1
(1) (2) (5)
Quick Start Guide
(2) (1) (5) (6) (6)
INPUT 4 INPUT 1-2 INPUT 3-4 1Gbps PRIM ACT 1Gbps SEC ACT 100-240V 2400-2950W
50-60Hz
LINK LINK
PIN 1: SCRN 2: POS 3: NEG
AES/EBU SWITCHED 00/ 000 Base-TX 1 1
Made in Thailand Must be grounded/earthed
(3)
Must be
grounded/
earthed
100-240V
2400-2950W
50-60Hz
CH 1 CH 2 CH 3 CH 4
SPEAKER OUTPUTS
SEC ACT
CH 1 CH 2 CH 3 CH 4
LINK
CLASS 2
WIRING
1+/- CH 1+/- 1+/- CH 2+/- 1+/- CH 3+/- 1+/- CH 4+/-
2+/- CH 2+/- 2+/- CH 4+/-
(6) (4) (7)
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