Guardian Telecom PSCU Guía
Paging System Control Unit
Model PSCU
Installation & Operation
P006773 Rev. C 151109 11/9/2015 12:45 PM
Ph: 403.258.3100 \ email:info@guardiantelecom.com \ www.guardiantelecom.com
Guardian Telecom Inc. Installation and Operation
Model PSCU
Page 2
Table of Contents
Package Contents.................................................................................2
Overview...............................................................................................3
Features................................................................................................3
Installing the PSCU...............................................................................8
Field Repairs & Adjustments.................................................................8
Control Console DB25 Connector.......................................................10
Engineering Specifications..................................................................11
Warranty..............................................................................................12
Disclaimer ...........................................................................................12
Warning...............................................................................................12
Service Number ..................................................................................12
Feedback ............................................................................................12
Guardian Product Return....................................................................13
Table of Figures
Figure 1 - Dimensions...........................................................................4
Figure 2 - Back View.............................................................................4
Figure 3 - Features................................................................................5
Figure 4 - Circuit Board Features..........................................................7
Figure 5 - Wiring Table........................................................................10
Table 1 - Circuit Board Connections.....................................................6
Package Contents
(1) P9005 PSCU Paging System Control Unit
(1) Cable with DB25 connector
(1) Installation & Operation Manual
Guardian Telecom Inc. Installation and Operation
Model PSCU
Page 3
Overview
PSCU Paging System Control Unit
The custom made Guardian Paging System Control Unit (PSCU) is the main control console that
includes Gooseneck Microphone (785L) with push-to-talk switch, alarm activation and reset buttons
(with indicator lights), indicator lights for Digital Recorder (if system equipped), Pilot Tone Generator,
Backup Amplifier status and RF Failure indication. It also contains a built-in page system monitor
speaker with respective volume control. The PSCU is remote powered and connected to the main
system rack via a 25 conductor cable.
Features
16 gauge steel enclosure - zinc dichromate plated and powder coated
10 gauge steel faceplate - zinc dichromate plated and powder coated
Heavy duty gooseneck microphone
Ergonomic angled top deck
Three alarm channel activation buttons plus one reset button
PA system monitoring capability
Monitor speaker volume control
Remote device indication: RF Detector/Voice Recorder
Quick disconnect wiring harness
Large Push-to-Page (PTT) button
Internal telephone (RJ11) jacks for optional telephone termination
Guardian Telecom Inc. Installation and Operation
Model PSCU
220mm [8.7"]
151mm [6.0"]
298mm [11.7"]
203mm [8.0"]
Figure 1 - Dimensions
1
Figure 2 - Back View
DB25 Connector
Page 4
Guardian Telecom Inc. Installation and Operation
Model PSCU
21 4
3
5
6
7
8
10
11
12
9
RECORD PILOT BACKUP RF FAIL
OIL FIRE
RESET
VOLUME
Figure 3 - Features
Record Activation Indicator Light
(Console Power Indicator if not equipped with Recorder option)
Pilot Tone Generator Status Indicator Light
Backup Power Amplifier Activated Indicator Light
RF Detector Failure Indicator Light
PTT (Push-to-Talk) Button for PA Override + Recorder Control (if equipped)
Console Monitor Speaker Volume Control
Alarm Trigger #3
Alarm Trigger #2
Gooseneck Microphone
Alarm Trigger #1
⑪Alarm Reset Button
⑫Console Monitor Speaker
Page 5
Guardian Telecom Inc. Installation and Operation
Model PSCU
Page 6
Component Function
J15 (Dynamic) Microphone Input
R31 Potentiometer for high frequency cutoff adjustment
R22 Potentiometer for low frequency cutoff adjustment
J21 Microphone output signal
J20 Receiver indicator output (LED can be mounted)
J3 Page/Talk output indicator (when the Page/Talk button is pressed these contacts
J3-1; J3-2 are shorted)
J1 24V AC or DC input (pins 1 & 2)
F1 0.5 Amp fuse (fast blow)
S1 #3 alarm switch (contacts 1 - 5 of J5)
S2 #2 alarm switch (contacts 2 - 5 of J5)
S3 #1 alarm switch (contacts 3 - 5 of J5)
S4 Reset alarm switch (contacts 4 - 5 of J5)
J14 (Amplified) Page input signal
R28 Potentiometer for speaker volume adjust (on the PCB)
J19 Header for panel mount volume adjust speaker (R28 has to be removed)
J13 Speaker output
J4 Mute speaker (1 - 2 mute on, 2 - 3 mute off)
J2 Phone line 1 in (header) [optional usage]
J18 Phone line 1 out (RJ11) [optional usage]
J16 Phone line 2 in (header) [optional usage]
J17 Phone line 2 out (RJ11) [optional usage]
Table 1 - Circuit Board Connections
Guardian Telecom Inc. Installation and Operation
Model PSCU
Figure 4 - Circuit Board Features
Page 7
Guardian Telecom Inc. Installation and Operation
Model PSCU
Page 8
Installing the PSCU
Inspect the product for shipping damage.
Follow all appropriate electrical codes and use only approved electrical
fittings for the installation.
Tip: If the product is
damaged, notify the
carrier immediately.
Place the PSCU in the desired location.
Ensure that none of the electrical circuits are live.
Wire up to the Guardian System Rack.
Adjust the control console speaker volume potentiometer (R28) to the
desired volume level.
Adjust high and low frequency cut off filter potentiometers to desired levels.
The high frequency filter (potentiometer R31) can reduce any possible noise
on the PSCU monitor speaker. The low frequency filter (potentiometer R22)
can help reduce any possible distortion to the PSCU monitor speaker.
Test all input/outputs and audio according to system option configuration.
See: Figure 5 - Wiring
Table
See: Figure 4 - Circuit
Board Features
Field Repairs & Adjustments
This device has no user serviceable internal components; the only maintenance
possible is replacement of the fuse. See: Figure 4 - Circuit
Board Features
Fuse Replacement
Remove the top deck of the control console to access the fuse, which is
mounted on the PCB. Replace the blown fuse with new 0.5 amp 250V
2AG fast blow fuse. Re-assemble the top deck to the base and re-test.
WARNING!
Replace only with a 0.5 amp 250V 2AG fast blow fuse. Failure to do so will
void the warranty.
If the fuse fails again on reconnecting power, check the system wiring.
Guardian Telecom Inc. Installation and Operation
Model PSCU
Page 9
LED displays:
* Record LED: Digital Recorder ready display
* Pilot LED: Pilot Tone Generator in use display
* Backup LED: Backup Amplifier fail display
* RF fail LED: RF transceiver fail warning display
The following LED displays are integral to the Alarm switches.
* Oil LED (Alarm #1)
* Major LED (Alarm #2)
* Fire LED (Alarm #3)
Switches:
A. Alarm switches
There are three optional Alarm activating switches and one Alarm Reset switch.
The Oil (#1), Major (#2), and Fire (#3) Alarm switches are illuminated switches.
B. Push to Page switch
The Push to Page (PTP) switch is a heavy duty shrouded switch. Pressing the PTP switch will
activated the Microphone and the MIC Pre-amplifier.
Microphone:
The goose neck Microphone is the Paging Microphone that is designed to override telephone
accessed paging. Pressing the PTP switch will enable the Microphone and the Microphone
Pre-amplifier. A control signal from the PTP switch will activate a Digital Recorder (if
equipped).
Speaker and Volume Control:
The built-in speaker monitors the paging system output (from any activated zone). Its output is
controlled by the Volume Control Potentiometer.
Guardian Telecom Inc. Installation and Operation
Model PSCU
Page 10
Cable and Connector:
The PSCU is linked to the PA system through a DB25 connector. Its pin designation is defined
in the table below.
Control Console DB25 Connector
DB25 PCBA connectors DB25 wire colors Functions
Pin # Base/strip/strip
1 J1-1 RED 24VDC (POS)
2 J1-2 BLK 24VDC (NEG)
3 J5-1 RED/BLK FIRE SWITCH
4 J5-2 RED/BLK/ WH MAJOR SWITCH
5 J5-3 RED/GRN OIL SWITCH
6 J5-4 RED/WH RESET SWITCH
7 J5-5 BLK/RED GROUND
8 J6-1 ORG/RED FIRE LED
9 J7-1 ORG MAJOR LED
10 J8-1 ORG/GRN OIL LED
11 J8-2 ORG/BLK GROUND
12 J20-1 GRN/WH REC-EN
13 J20-2 GRN/BLK GROUND
14 J3-1 GRN PTT CONTACT A
15 J3-2 GRN/BLK/WH PTT CONTACT B
16 J19-1 BLU/WH RF FAIL LED
17 J10-1 BLU RECORD READY LED
18 J11-1 BLU/BLK PILOT TONE LED
19 J28-1 WH/BLK AUDIO AMP FAIL LED
20 J28-2 BLK/WH GROUND
21 J14-1 BLU/RED PAGE LINE TO CONSOLE A
22 J14-2 WH/RED/BLK PAGE LINE TO CONSOLE B
23 J21-1 WH MIC PRE-AMP O/P A
24 J21-2 WH/RED MIC PRE-AMP O/P B
25 J21-3 BLK/WH/RED GROUND
1) CONNECTOR ON THE BACK OF THE CONSOLE IS MALE.
2) CONNECTOR ON THE CABLE IS FEMALE. APPLY ON ONE END OF CABLE.
Figure 5 - Wiring Table
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