Bogen PCMZPM Service Manual

Bogen Model PCMZPM

Zone Paging Module for
Bogen's PCM2000 Zone Paging System

© 2000 Bogen Communications, Inc.
Part No. 54-5947-01R2
Printed in Korea. 0009

PCM

ZPM

ZONE A
ZONE B
ZONE C

ONOFF

TALKBACK

POWER

LPBGM

VOLUME

BGM

OUT IN

ZONE A

ZONE B

ZONE C

GLOBL BGM

LO PWR

OUTPUT

HI PWR

IN

LOCAL

BGM

RT

+

ZONE A

-

+

ZONE B

-

+

ZONE C

-

RD A

RD B

RD C

RD COM

PCMZPM

2

Contents

Description ......................................................................................................4

Talkback Option..............................................................................................4

Set Output Type ..............................................................................................4

BGM Volume ....................................................................................................4

BGM Options ..................................................................................................5

Local BGM........................................................................................................5

Zone Wiring ....................................................................................................5

Relay Driver Output ......................................................................................7

PCMZPM

PCMZPM

Description

The Bogen PCMZPM module provides three zones of paging to the PCM2000
system. Up to three PCMZPM modules can be used in a basic system to pro­vide up to nine zones of paging. Additional modules can be combined with a
PCMCPU module in a satellite system when more than nine zones are required.
Each PCMZPM module lets you set the talkback option (on or off) and back­ground music options for each zone. Each zone can be connected or discon­nected from the background music bus. Furthermore, the entire module can be
disconnected from the bus and a local background music source substituted.
Each module can also be configured for high-power operation (when using pas­sive speakers and a central amplifier), or low-power operation (supplying low
level signals to amplified speakers). A relay driver is provided for each zone,
becoming active when the zone is active.

Talkback Option

The talkback option requires the use of the PCMTBM talkback module (one per
system).

Talkback for each zone is selected using the built-in DIP switches. For each zone,
place the corresponding DIP switch in the OFF position for no talkback, or in
the ON position if talkback is desired.

Set Output Type

The OUTPUT switch is used to set the module for low-power or high-power
operation.A mechanical switch lock is provided to secure the switch in place.To
change the switch position, remove the screw securing the lock. Change the
switch position, then invert the lock and secure it in place with the screw.

Place the OUTPUT slide switch in the LO PWR position when using amplified
speakers or amplifiers per zone. Internal buffer amps condition the low level sig­nal to drive approximately 50 amplified speakers.Place the switch in the HI PWR
position when using passive speakers with a central amplifier. Only one output
type can be selected per PCMZPM module.

BGM Volume

The BGM VOL control changes the volume of the low level background music.
Low level page volume is not effected by this control.

4

BGM Options

A three-column jumper field is available to connect or disconnect each zone
output to the background music bus. Place the jumper in the OUT position to
disconnect the zone from the BGM bus. Place the jumper in the IN position to
connect the zone to the BGM bus.

NOTE: Each zone requires 2 jumpers to be moved to the same position as indicated
by the brackets for each zone label.

Local BGM

The PCMZPM module can accept input from a secondary (local) BGM source.
Move the GLOBL BGM jumpers to the out position, and connect the BGM
source to the terminal strip labeled LOCAL BGM IN & RT. (See the illustrations
in the Applications section of the PCMCPU manual for examples of this type of
configuration wiring.)

NOTE: The local BGM source must be compatible with the types of speakers installed
on the zone outputs, that is, low level when used with separate zone amplifier or ampli­fied speakers and high-power 25V or 70V when used with passive speakers.

Zone Wiring

The speaker of each paging zone connects to the appropriate screw terminals
on the connector block. These are labeled ZONE A, ZONE B, and ZONE C.
Each connection is marked + and - as a means of identifying phasing of the zone.
Typically, speaker returns go to - and speaker feeds go to +.

2-conductor shielded wire is recommended for speaker installation. One side of
the shield is grounded through the amplifier and the other side is left floating
with no connection. See illustration on page 6.

NOTE: A white block next to the zone output terminals is provided to write the actu­al system zone number for that set of terminals. Use an indelible marker to write in
the zone numbers.

PCMZPM

PCMZPM

Amplifier

70V

COM GND

25V

PCM

ZPM

ONOFF

TALKBACK

BGM

OUT IN

LO PWR

HI PWR

ZONE A
ZONE B
ZONE C

POWER

LPBGM
VOLUME

ZONE A

ZONE B

ZONE C

GLOBL BGM

OUTPUT

IN

LOCAL

BGM

RT

+

ZONE A

-

+

ZONE B

-

+

ZONE C

-

RD A

RD B

RD C

RD COM

N/C

6

Relay Driver Output

Each zone module has three relay driver outputs: RD A, RD B, and RD C - one
for each speaker zone.When a zone is active, its relay driver is shorted to RD
COM through an open collector transistor. These drivers can be used to acti­vate external relays to provide greater power capacity or to operate external
equipment.The power supply for these relays must be 12V DC or less.The total
sink current per driver cannot exceed 100 mA.

NOTE: Some power supplies are rated at 12V DC, but when lightly loaded are consid­erably higher in output voltage. If the power supply for the relay has an unloaded out­put of greater than 13V DC, the relay drivers may begin to conduct, energizing the
relay. If this problem occurs, you can either replace the supply with a regulated supply
or use a lower voltage supply.

PCMZPM

PCM

ZPM

ZONE A
ZONE B

SUPRESSION DIODES

RELAY

RELAY

RELAY

POWER
SUPPLY

12VDC

+

-

ONOFF

TALKBACK

BGM

OUT IN

LO PWR

HI PWR

ZONE C

POWER

LPBGM
VOLUME

ZONE A

ZONE B

ZONE C

GLOBL BGM

OUTPUT

IN

LOCAL

BGM

RT

+

ZONE A

-

+

ZONE B

-

+

ZONE C

-

RD A

RD B

RD C

RD COM

50 Spring Street, Ramsey, NJ 07446

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