PPC 25 Installation Instructions -...
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1 PPC 25 Priority Page Sensor • Installation Instructions 68-1437-01 Rev G 12 08 PPC 25 Installation Instructions PPC 25 Overview The Extron PPC 25 Sensor and Controller mute classroom audio for the duration of an announcement that is made over a public address (PA) system. The sensor connects to a PA speaker lead and detects current flow when a PA announcement is initiated. A signal from the sensor triggers the PPC 25 Controller’s output relay to close. This relay closure can connect to a PoleVault ® switcher, a mini power amplifier (MPA), a MediaLink ® controller (MLC), or any device with a contact closure type of mute control or a configurable digital input. The output relay remains closed, muting the classroom audio, until the PA announcement ends. It then opens, dropping the mute signal and restoring the classroom audio. If the output relay is connected to a MediaLink controller digital input, use Global Configurator software to configure the input port, and set the monitoring conditions and actions to drive the desired mute function on the classroom audio device. For instructions, consult the MLC’s user’s guide. For a PoleVault System, the output relay must connect only to the PVS 204SA switcher and not the MLC. This arrangement requires no software configuration. Included Parts: Priority Page Controller • Priority Page Sensor • UL-compliant junction box with a cable clamp and a lid • 35’ (10.7 m) of sensor cable • Y-cable for sharing power with another unit • The PPC 25 Sensor assembly must be installed in a UL-compliant junction box with a cover to meet the plenum rating requirement. All cables to and from the sensor must also be plenum rated. N The PPC 25 works with traditional 25 V or 70 V and 4/8 ohm PA systems. It is not designed for, and may not work properly with, two-way intercoms, or systems that are IP-based or use digital clocks. A Typical PPC 25 Installation POWER US Ceiling Mounted Paging Speaker Paging System Sensor Classroom Admin Building To Classroom Paging Speakers Relay Output Remote Vol/Mute Control Extron PPC 25 Priority Page Controller Extron PVS 204SA Twisted Pair Switcher Extron SI 26 Surface Mount Speakers
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Transcript of PPC 25 Installation Instructions -...
1PPC 25 Priority Page Sensor • Installation Instructions
68-1437-01Rev G12 08
PPC 25 Installation Instructions
PPC 25 OverviewThe Extron PPC 25 Sensor and Controller mute classroom audio for the duration of an announcement that is made over a public address (PA) system.
The sensor connects to a PA speaker lead and detects current flow when a PA announcement is initiated.
A signal from the sensor triggers the PPC 25 Controller’s output relay to close. This relay closure can connect to a PoleVault® switcher, a mini power amplifier (MPA), a MediaLink® controller (MLC), or any device with a contact closure type of mute control or a configurable digital input.
The output relay remains closed, muting the classroom audio, until the PA announcement ends. It then opens, dropping the mute signal and restoring the classroom audio.
If the output relay is connected to a MediaLink controller digital input, use Global Configurator software to configure the input port, and set the monitoring conditions and actions to drive the desired mute function on the classroom audio device. For instructions, consult the MLC’s user’s guide.
For a PoleVault System, the output relay must connect only to the PVS 204SA switcher and not the MLC. This arrangement requires no software configuration.
Included Parts:Priority Page Controller•
Priority Page Sensor•
UL-compliant junction box with a cable clamp and a lid•
35’ (10.7 m) of sensor cable•
Y-cable for sharing power with another unit•
The PPC 25 Sensor assembly must be installed in a UL-compliant junction box with a cover to meet the plenum rating requirement. All cables to and from the sensor must also be plenum rated.
N The PPC 25 works with traditional 25 V or 70 V and 4/8 ohm PA systems. It is not designed for, and may not work properly with, two-way intercoms, or systems that are IP-based or use digital clocks.
A Typical PPC 25 Installation
POWER
CNO
PAGINGRELAY
DELAYSENSITIVITY
12V
0.2AMAX
ON
12
L
R
AUX/MIX IN
DO NOT GROUND
OR SHORT
SPEAKER OUTPUTS!
1B
1A
INPUTS
OUTPUTS
2B
2A
3B
3A
RS-232 MLC/IRDC VOL
4/8 Ohms
AMPLIFIED OUTPUTS
VOL/MUTETx
AB
C
Rx IR12V
10V
POWER
12V
3A MAX
US
LISTED 17TT
AUDIO/VIDEO
APPARATUS
®
RGB
VIDEO
RGB
VIDEO
Ceiling Mounted Paging Speaker
Paging System
Sensor
ClassroomAdmin Building
To ClassroomPaging Speakers
Relay Output
Remote Vol/MuteControl
ExtronPPC 25Priority PageController
ExtronPVS 204SATwisted PairSwitcher
ExtronSI 26Surface MountSpeakers
PPC 25 Priority Page Sensor • Installation Instructions2
PPC 25 Installation Instructions, cont’d
Front and Rear Views of the PPC 25 Controller
a Power-on LED — green when power is on.
b Relay LED — amber when output relay is closed.
c Power receptacle — 12 VDC, 33 mA. The unit does not ship with a power supply. Power may be shared with another device. Polarity must be observed.
N When using the PPC 25 controller with a PoleVault switcher, use the Y-shaped power cable (provided) to power both units (see page 3).
d Paging Sensor connector — for the Priority Page Sensor that is located near a PA system speaker.
e Relay Out connector — connects to an amplifier or switcher that has a contact closure type of mute control input, or to an MLC device with a digital input. When a PA system announcement is initiated, the output relay closes and remains closed for the duration of the announcement. The closed output relay triggers the classroom audio mute function. When integrating the PPC 25 into a PoleVault System, connect the output relay to the PVS 204SA Mute and Ground pins only (see diagram on page 2).
f Time switch — sets how long the output relay will remain closed after a PA announcement has ended. A short time delay is necessary so that, if the PA system announcer pauses briefly during the announcement, the classroom audio is not restored prematurely. The 2-position DIP switch provides the following time settings:
g Sensitivity adjustment — sets the sensitivity level for the signal arriving from the Priority Page Sensor. The final setting depends on the type of paging system and the number of wire loops on the sensor (see page 3). Rotate clockwise to increase sensitivity and counterclockwise to decrease sensitivity.
Installation Procedure
W All structural steps and electrical installation should be performed by qualified personnel in accordance with local and national building codes, fire and safety codes, and/or local and national electrical codes.
To meet the plenum rating requirement the PPC 25 Sensor assembly must be installed in a UL-compliant junction box with a cover and all cables to and from the sensor must be plenum rated.
1. Choose suitable locations for the controller and sensor. The controller must be located close to the PVS 204SA and its power supply. The sensor must be located near, and in series with, the speaker.
2. If the sensor is to be located in a plenum space, the junction box (provided) can be used. Knock out an opening at one end of the junction box and attach the cable clamp (see figure at right). Secure the box where the sensor will go.
3. Disconnect the speaker cable from the speaker.
PPC 25
RELAY
7
2
3 4 5 6
1
POWER
C NO
PAGINGSENSOR OUT
TIME
RELAY
SENSITIVITY
12V0.5A MAX
ON
1 2
TIMEON
1 2
= 2.0 sec (default) = 4.0 sec = 6.0 sec = 8.0 sec
3PPC 25 Priority Page Sensor • Installation Instructions
4. Remove the outer protective jacket from the speaker cable to expose the two speaker wires from the sensor to the speaker (as shown at right). Do not remove the inner protective jackets that cover the individual wires.
If the sensor is to be located in a plenum space, feed a loop of one of the exposed speaker wires through the cable clamp into the junction box. The other wire can bypass the junction box.
Open the top of the Priority Page Sensor.
5. Loop one of the speaker wires tightly around the top part of the sensor. Polarity need not be observed.
N Loop only one of the speaker wires around the sensor cover. Do not loop both wires.
The other speaker wire must bypass the sensor and connect directly to the speaker. • Fora25Vor70Vsystem,wrap5to8loops. • Fora4/8ohmsystem,wrap2to4loops.
6. Close and latch the top of the Priority Page Sensor.
7. Reconnect the speaker cable to the speaker.
8. Cutan18"(45cm)sectionfromtheunterminatedendofthesuppliedbluesensorcable(see the figure above). Use it to connect the Relay Out port on the PPC 25 Controller to theMuteandGroundpinsonthePoleVaultPVS204SAVol/Muteport(seethefigureat right). Polarity need not be observed.
N Do not connect either of the outputs from the PPC 25 Controller to the 10V port on the PVS 204SA switcher. The output relay must connect only to the PVS 204SA switcher and not to a MediaLink controller.
BlueSensorCable
Ceiling Mounted Paging Speaker
PriorityPageSensor
Strip plenum jacket fromspeaker cable to revealtwo speaker wires.
Speaker Cable withPlenum Jacket Intact
POWER
C NO
PAGINGSENSOR OUT
TIME
RELAY
SENSITIVITY
12V0.5A MAX
ON
1 2
L RRS-232 MLC/IR
4/8Ohms
AMPLIFIED OUTPUTS
VOL/MUTETx
A B C
Rx IR 12V 10V
PageController
PVS 204SA
PPC 25 Priority Page Sensor • Installation Instructions4
Extron USA - West Headquarters
+800.633.9876Inside USA / Canada Only
+1.714.491.1500+1.714.491.1517 FAX
Extron USA - East
+800.633.9876Inside USA / Canada Only
+1.919.863.1794+1.919.863.1797 FAX
Extron Europe
+800.3987.6673Inside Europe Only
+31.33.453.4040+31.33.453.4050 FAX
Extron Asia
+800.7339.8766Inside Asia Only
+65.6383.4400+65.6383.4664 FAX
Extron Japan
+81.3.3511.7655+81.3.3511.7656 FAX
Extron China
+400.883.1568Inside China Only
+86.21.3760.1568+86.21.3760.1566 FAX
Extron Middle East
+971.4.2991800+971.4.2991880 FAX
PPC 25 Installation Instructions, cont’d
9. Strip3/16"ofinsulationfromeachconductoronthebarewireendoftheremainingblue sensor cable. Do not tin the leads. Connect the wires to the 2-pole captive screw connector on the Priority Page sensor. Polarity need not be observed.
10. Route the connector end to the PPC 25 controller, and plug it into the Paging Sensor receptacle.
11. If a junction box is being used in a plenum space, ensure the sensor and all wires fit inside the box (as shown at right). All cables leaving the box must be plenum rated. Tighten the cable clamp and secure the lid to the junction box.
12. Use the included Y-shaped cable assembly to power the PPC 25 from the PVS 204SA power supply (as shown below). This cable assembly allows both devices to be powered from a single power supply.
Testing and Adjustment Procedure
The fully installed system is shown in the figure to the right. To test that the classroom audio is muted when a PA system announcement (page) occurs:
1. Turn the classroom audio on.
2. Speak into the PA system microphone. The classroom audio should be muted while the PA system page occurs and be restored when the page ends.
3. If the PPC 25 fails to mute the classroom audio during a page, turn the Sensitivity adjustment, on the rear panel of the controller, clockwise.
4. If classroom audio is muted without a page occurring, turn the Sensitivity adjustment counterclockwise.
POWER
CNO
PAGINGRELAY
DELAYSENSITIVITY
12V
0.2AMAX
ON
12
L
R
AUX/MIX IN
DO NOT GROUND
OR SHORT
SPEAKER OUTPUTS!
1B
1A
INPUTS
OUTPUTS
2B
2A
3B
3A
RS-232 MLC/IRDC VOL
4/8 Ohms
AMPLIFIED OUTPUTS
VOL/MUTETx
AB
C
Rx IR12V
10V
POWER
12V
3A MAX
US
LISTED 17TT
AUDIO/VIDEO
APPARATUS
®
RGB
VIDEO
RGB
VIDEO
To PowerSupply
ExtronPPC 25Priority PageController
ExtronPVS 204SATwisted PairSwitcher
POWER
C NO
PAGINGSENSOR OUT
TIME
RELAY
SENSITIVITY
12V0.5A MAX
ON
1 2
PageSensor
PageController
POWER
CNO
PAGINGRELAY
DELAYSENSITIVITY
12V
0.2AMAX
ON
12
L
R
AUX/MIX IN
DO NOT GROUND
OR SHORT
SPEAKER OUTPUTS!
1B
1A
INPUTS
OUTPUTS
2B
2A
3B
3A
RS-232 MLC/IRDC VOL
4/8 Ohms
AMPLIFIED OUTPUTS
VOL/MUTETx
AB
C
Rx IR12V
10V
POWER
12V
3A MAX
US
LISTED 17TT
AUDIO/VIDEO
APPARATUS
®
RGB
VIDEO
RGB
VIDEO
Ceiling Mounted Paging SpeakerPaging System
PPC 25PriorityPage Sensor
Relay Output
Remote Vol/MuteControl
ExtronPPC 25Priority PageController
ExtronPVS 204SATwisted PairSwitcher
ExtronSI 26Surface MountSpeakers
