![EDWARDS SYSTEMS TECHNOLOGY FCCA Series Скачать руководство пользователя страница 13](http://html1.mh-extra.com/html/edwards-systems-technology/fcca-series/fcca-series_installation-manual_2366307013.webp)
TB1-1/2 Channel 2 Activity Relay TB1-3/4 Channel 1
Activity Relay
Normally open relay contact which closes when the FCCA is activated
by one of the following conditions:
1. Any FCCA front panel switch is activated.
2. Automatic activation of the FCCA by a CM1(N), PCPU, RMDP-
1N, or CCS-1.
3. Loss of polling from a CM1(N), PCPU, RMDP-1N, or CCS-1.
When a condition is received which requires audio system activation,
both activity relays are energized.
The activity relays connect to the Amplifier Terminal Panel (P/N
240068) “activity in” terminals, and operate a power relay in the ATP
which enables battery power for the power amplifiers should the
amplifier rack loose 120 VAC power when the FCCA is active.
The activity relays must be supervised by an IRC “S” zone when the
FCCA is not adjacent to the ATP.
TB1-5/6 Channel 1 Pre-Amp Output
This supervised FCCA output signal is connected to the channel 1 pre-
amp input terminals of the Amplifier Terminal Panel (ATP) or an
AA75 series amplifier. This output is supervised by the FCCA for open
circuits. When a trouble is detected a 4110 supervisory open condition
is generated. Additionally, the channel 1 output features backup pre-
amp switching. A channel 1 pre-amp failure switches the channel 2
pre-amp signal to the inputs of both the channel 1 and channel 2 power
amplifiers.
The method for the FCCA pre-amp output circuit supervision required
is determined by the number of amplifiers on the pre-amp riser as
shown in the table below.
TB1-7 Pre-Amp Shields
Terminate pre-amp cable shields here.
TB1-8/9 Channel 2 Pre-Amp Output
This supervised FCCA output signal is connected to the channel 2 pre-
amp input terminals of the Amplifier Terminal Panel (ATP) or an
AA75 series amplifier. This output is supervised by the FCCA for open
circuits. When a trouble is detected, a 4111 supervisory open condition
is generated. Additionally, the channel 1 output features backup pre-
amp switching. A channel 2 pre-amp failure switches the channel 1
pre-amp signal to the inputs of both the channel 1 and channel 2 power
amplifiers.
The method for the FCCA pre-amp output circuit supervision required
is determined by the number of amplifiers on the pre-amp riser as
shown in the table below.
FCCA Series Manual
7
firealarmresources.com