Bogen PCMTIM User Manual download pdf (Page 2)

Note: PCMZPM modules with a label on the top marked "PCM2000 -B" are

high-power versions and can operate with 250W amplifiers. Such models

require Model PCMPS2 12V DC, 1.5A power supply to operate properly.

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 acti-

vate 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 consid-

erably higher in output voltage. If the power supply for the relay has an unloaded out-

put 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

2 7

Connections to Relay Drivers

SUPPRESSION DIODES

1 2 3 4 5 6 7 8

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Bogen PCMTIM User Manual Page 2