Download CC-STS - Crest Audio

Speaker Tone Sense Module
for CK series Power
Processing Amplifiers
CC-STS
Product Information
The CC-STS module is the answer to system designers needs to
satisfy local building codes for emergency voice announcement
systems. These systems are typically referred to as “supervised”
installations where each amplifier senses a tone that is looped back
to the STS module. As a CC style module it is intended to operate in
a stand alone amplifier or can be used with NexSys local controllers
(LCP-AC8).
unit sets a contact closure open or closed depending on your application.
The module provides 2 inputs for speaker returns and two alarm
outputs (contact closures). The alarm outputs can be set to “Parallel” or “Stereo” via the “Parallel Mode” jumper. In “Parallel” mode,
both alarm outputs trip when the pilot tone is absent on either (or
both) channel. In “Stereo” mode, each alarm operates independently. Protect and Tone LED’s are also provided on the panel to
indicate which type of failure has occurred.
The CC-STS Module fits in the network bay located on the rear
panel of Crest Audio CK series of power processing amplifiers. The
module individually monitors each amplifiers output and the complete speaker run for a pilot tone to ensure total system operation.
When the pilot tone is absent from the end of the speaker chain, the
The CC-STS Modules are designed and manufactured in the United
States.
Features
· Two independant speaker return inputs and two Alarm outputs A & B (contact closures)
· Works with any CC or NC type input module and CC type output module
· STS module resides in middle bay of the CK series amplifier
· Contact closures indicate loss of pilot tone or amplifier protect (amplifier output relays open) on either channel
· User selectable jumpers to enable normally open or normally closed contact closures
· Contact closures may be paralleled for a single return
· LED’s on the module indicate the type of fault
· Selectable tone sense range 13 to 30kHz. (Typical use is 20kHz.)
· User adjustable controls (recessed) for detector frequency and threshold level
· Provides continuous integrity monitoring (tone sense) required for many fire safety codes
· User selectable “Tone” fault enable / disable
· For use as a stand alone product (no network required) or with a local controller
CC-STS connections
Speaker
Wire
To Contact
Closure Input
Speaker
Return
Wire
Designed & manufactured in the USA by:
Crest Audio Inc.
100 Eisenhower Dr.
Paramus, New Jersey 07652 USA
www.crestaudio.com
Speaker Return
Input
Alarm
Output
Settings
LISTED 8B42
COMMERCIAL
POWER
AMPLIFIER
Faults
Ch A
Ch A
+ –
120V~60 Hz 15A
Thresh.
Freq.
Protect
Contact
Closures
Tone
Ch B
Ch B
+ –
Speaker Tone Sense Module
Speaker
Wire
Speaker
Return
Wire
Model
CC-STS
To Contact
Closure Input
USA - Specificarion amplifier shown
Architects and Engineers Specifications - CC-STS
The module shall plug into the the middle bay of the CK Power Processing Series Amplifier. It will detect a pilot tone at the speaker return input. The
detectable frequency range of a the pilot tone will be between 13K to 30KHz.
The pilot tone frequency and threshold will be seletable by a recessed rear
Input
Signal A Input
With Signal B
Pilot Tone With
Pilot Tone
panel potentiometer. The rear panel will have LED’s indicating a loss of
“Tone” or “Protect” fault for each channel. Two contact closures for“Alarm”
outputs are provided. There will be a user selectable jumper for independent
or paralled output operation. There will be a user selectable jumper for
“Tone” fault enable/disable.
CC-STS
Middle Bay Module
Speaker Tone Sense Module
Block Diagram
fault status LED’s
tone
protect
A
B
A
B
B speaker return
NDP-ENG
+
hi pass filter
-
threshold
tone decoder
tone
(center frequency)
ETHERNET NEXSY
S GA
TEW
A
NEXSYS
GATEW
TEWA
relay
alarm output A
relay
alarm output B
microcontroller
B speaker return
+
-
hi pass filter
tone decoder
threshold
tone
(center frequency)
on
on
off
off
paralled mode
A
B
sense enable
user selectable jumpers
Electrical Specifications
Sense input voltage range:
Sense threshold:
Sense tone:
Fault Alarm output:
Connectors:
100V rms
5Vrms – 50mVrms
13k-30kHz
two 100mA relay contacts
Speaker Returns:
Alarm Outputs:
2 position Pheonix Combicon connecters
2 position Pheonix Combicon connecters
Controls:
Tone (center frequency): Recessed trim potentiometer
Threshold: Recessed trim potentiometer
Indicators:
Tone Fault LED
Protect Fault LED
NexSys is a registered trademark of Crest Audio Inc. Crest Audio reserves the right to make improvements in manufacturing or design which
may affect specification (so there). Crest Audio specification literature is
available in downloadable PDF format; visit our web site at http://
www.crestaudio.com.
v. 1.4 3/22/2001
A44000082
2000 Crest Audio Inc.
Crest Audio Inc.
100 Eisenhower Drive
Paramus, NJ 07652 USA
TEL:(201)909-8700 FAX:(201)909-8744
http://www.crestaudio.com