Altronics Redback A 2067 Istruzioni

Sfoglia online o scarica il pdf Istruzioni per Strumenti di misura Altronics Redback A 2067. Altronics Redback A 2067 2. Line monitoring unit

Stampa la pagina

The A 2067 is a line monitoring unit or

LMU. An LMU monitors the condition of

100V PA speaker lines and alerts you if

there is a problem with the wiring.

The A 2067 comes standard with five sepa-

rate zones that have individual LEDs to

indicate the condition of the Line.

The A 2067 can be expanded up to 10

zones when the A 2068 (5 zone card) is

installed.

Features

• Up to 10 zones monitored (with A 2068

installed)

• LED's to indicate condition of the Line

• Loud alert sound if there is a fault

• Separate rear outputs for the condition

LED's (via DB26 Socket)

Fitting the A 2068 5 Zone Card

First remove the lid by way of the 6

screws on the top. Then remove the front

panel there are 3 screws on the bottom /

front. Watch for the wire connecting the

switch in the front panel to the pcb. DO

NOT disconnect these wires. Once the lid

and front panel have been removed install

the A 2068 on the four plastic standoffs

already in the chassis. Make sure you

remove the plugable terminal blocks on

the rear of the A 2068 before installation

otherwise it will not fit. Connect the spare

16 Way IDC plug into the A 2068 (Refer to

additional instructions inside case). Screw

the front panel then the lid back into place.

The A 2067 LMU is now ready to be

installed.

Installing the A 2067 LMU

The A 2067 can be powered by a 16VAC

plugpack or 24VDC. Terminals on the rear

are supplied for both.

Hook up the 100V PA amplifier/s to the

inputs on the rear. All the inputs are isolat-

ed from each other so up to 5 amplifiers

(10 if A 2068 fitted) can be used or any

Page 1

combination below that number e.g. one

amplifier connected to 2 or more inputs.

NEVER connect 2 or more amplifiers to

one zone it will cause major damage to the

A 2067 and the amplifiers.

The output terminals can now be con-

nected to the speaker lines. A maximum of

100 Watts of load per zone is allowed. Any

more than this will damage the A 2067.

Any number of 100V line transformer /

speaker combinations can be used as long

as the total load for each zone is below 100

Watts.

Setting up the speaker runs so they work

with the A 2067 is as easy as installing a

22uf BP capacitor at the input of each

transformer / speaker (please see figure 3).

Install an end of line resistor or EOL at the

very end of the wiring run before the final

transformer / speaker. The end of line

resistor must be 100K Ohm in value and at

least .25 Watt or above. Unused outputs

from the A 2067 need to have a EOL resis-

tor installed across positive and negative

terminals. If these are not installed the

A 2067 will bring up a fault condition for

the non EOL terminated zones.

Powering up the A 2067

When the A 2067 is powered up the unit

will emit three loud beeps to indicate that

the unit has turned on. The A 2067 then

pauses for about 10 seconds to allow the

protected zones to be checked for the con-

dition they are in.

The unit will then beep once to indicate

that it has checked the zones. If there is a

fault the A 2067 with alert you with a loud

pulsing beep. A short on a zone is indicat-

ed on the front panel by a red LED. An

open condition on a zone will be indicated

on the front panel by a yellow LED. If

there are no faults detected, all zones will

indicate good condition with a green LED.

Distributed by Altronic Distributors Pty. Ltd. Perth. Western Australia.

Phone: 1300 780 999 Fax: 1300 790 999

Internet: www.altronics.com.au

A 2067 Line

Monitoring Unit

www.altronics.com.au

If the A 2067 goes into alert mode and

the beeping is heard it can be stopped by

pushing the CANCEL button. The fault

LED indicators will remain on until the

fault on the zone is corrected. Any new

fault conditions will result in the alert tone

sounding again.

From then on no matter how many times

the cancel button is pushed the A 2067 will

go into alert mode any time there is a new

fault condition on any of the zones. The

alert will not sound again if a zone goes

from a fault (open or short) condition to

good condition.

Fault Finding

The A 2067 does not power up: Check that

power is applied to the unit either by a

16VAC plugpack or an external 24VDC

source.

Unit continues to go into alert mode and

emits a loud continuous beep: Push the cancel

button and check the LED display. See

which zone is causing the problem (if all

zones are showing "good" the buzzer will

not sound continuously).

The SHORT LED is coming up on a zone:

First check and see if you have installed

the 100K EOL resistor at the end of the line

and the 22uf BP capacitors on each of the

transformer / speakers that are installed

on that line (see diagram). If they are all

installed there must be a short across the

line, once removed the A 2067 will go into

GOOD.

The OPEN LED is coming up on a zone:

First check and see if you have installed

the 100K EOL Resistor at the end of the

line and the 22uf BP Capacitors on each of

the transformer / speakers that are

installed on that line (see diagram). If they

are all installed there must be a break in

the line, once this is removed the A 2067

will go into GOOD.

BL1564