User guide

42 Distributed Audio Panel Manual — P/N 52265:B1 6/8/2010
Installation Output Circuits
3.6.3 Notification Appliance Circuit (Speakers)
Each Amplifier Module provides one Notification Appliance Circuit for speakers. The circuit can
be wired Style Y (Class B) or Style Z (Class A). Each supervised and power-limited circuit is capa-
ble of 25 watts of power. The maximum total capacitance for each speaker circuit cannot exceed
250 uF. Refer to the Device Compatibility Document for a listing of compatible speakers.
Shielded cable is not required, however, shielded cable will reduce RFI/EMI emissions and suscep-
tibility. For additional information, refer to “Wiring Requirements” on page 78.
3.6.4 ACC-ZPM Zone Page Module - Zone System Serial Link
The ACC-ZPM Zone Page Module provides control of the speaker circuits connected to the ACC-
ZSM Zone Splitter Module. In order to provide program control, an EIA-485 link must be estab-
lished between the ACC-ZPM and the ACC-ZPMK located in the ACC-25/50ZS Panel. This is
accomplished by wiring TB1 on the Zone Page Module to TB2 on the ACC-ZPMK. Riser conduc-
tors must be installed in accordance with the survivability from attack by fire requirements in
National Fire Alarm Code, NFPA 72. Circuit wiring requires a ferrite bead as illustrated in Figure
3.13.
Note that the ACC-ZPM must be set to an address between 01 and 05.
!
CAUTION: OBSERVE POLARITY
MATCH PROPER POLARITY CONNECTIONS TO FIELD WIRING AND SPEAKERS. POLARITY
SHOWN IS IN THE STANDBY AND ALARM CONDITIONS.
Figure 3.12 Speaker Circuit Connections
Style Z (Class A) Circuit
ELR Resistor required for
Style Y - Class B only
4.75K, 1 watt, P/N:75470
Shield
2550ckt1.wmf