Alpha PK543A User Manual

IL826
PK543A Amplifier
Installation Instructions and Wiring

used with Tek-ENTRY® Apartment Entrance Panels

APPLICATION

The T ek-ENTRY® Apartment Entry Intercoms provide two­way communications between the building entrance and each
suite. Hands-free loudspeaker operation at the entrance panel
and push button controlled communication at the suite
locations provide for easy operation. Controlled door entry
is permitted by push button operation at the suite in
conjunction with electric door release.

Optional equipment is available to provide additional
functionality, such as post of fice key door release, additional
entrance panels, strobe light call indication (LI404B) and
auxiliary relay (RY014B) for ancillary device operation (bells,
lights, etc.).

PROCEDURE

1. Read installation instructions to determine equipment
location and installation methods.

2 . Install housings (or back boxes) and wiring.
3 . Check wiring, connect and install equipment.

4. Apply power and check operation.

EQUIPMENT LOCATION

Suite Stations

Locate suite stations (also known as remote stations)
where convenient for use. Install a housing or back box
at the desired location.

Entrance Panel

Use an OH190 series housing and OF190 series frame for
flush wall mounting. Use an OF190S series frame for
surface mounting. Locate the entrance panel where it is
sheltered from weather.

Amplifier

Install the amplifier inside the entrance panel when using
an OH190 series housing. The amplifier must be installed
outside the entrance panel when using an OF190S series
surface frame. Refer to Connections Section, Item #3 for
further details.

Section A

Rev. 3 - 01/2009

WIRING

Suite Stations

Stations may be connected in risers using the following
cable configurations:

3-wire stations: 1 twisted pair #22 AWG, plus 1 con­ductor #22 AWG per station in riser.

4-wire stations: 1 twisted pair #22 AWG, plus 1 con­ductor #22AWG, plus 1 conductor #22 AWG per
station in riser.

5-wire stations: 1 twisted pair #22 AWG, plus 2 con­ductor #22 AWG, plus 1 conductor #22 AWG per
station in riser.

The maximum cable length is 400 feet (120 meters).
Additional risers may be added as needed. Station cables
must not be run in the same conduit with (or too close to)
electrical wiring or background music, and must not be
close to fluorescent lighting or other electrical equipment.
Failing to observe this requirement can result in noise
entering the intercom audio. Ensure that sufficient
amounts of cable are left in the back box to make
connections to stations.

Transformer

Cable wiring must be 2 conductor #18 AWG with a
maximum cable length of 80 feet (25 meters). If using #14
A WG wire, this distance can be extended to 200 feet (60
meters). Route cable away from suite station wiring and
maintain a minimum of 3 feet (1 meter) of clearance
between the transformer and the amplifier.

Door Release

Cable wiring must be 2 conductor #18 AWG with a
maximum length of 50 feet (15 meters). See Figure 2—
PK543A Doorstrike Applications for specifics of each
door control unit configuration. Note: An SS106

transformer must be used for 24 V AC doorstrike and 12
VDC Maglock applications (8 volt tap required).

Copyright © T ekT one Sound & Signal Mfg., Inc. All Rights Reserved.

ALPHA COMMUNICATIONS

Toll-Free Technical Line: 1-800-666-4800 • Phone: [phone] • Fax: [phone]

Website: www.AlphaCommunications.com • Email: [e-mail]

®

• 42 Central Drive • Farmingdale, NY 11735-1202

CONNECTIONS

Before connecting to unit and applying power, verify that
wires are free from shorts and grounds. Make connections
as per Figure 1—PK543A Wiring Diagram. Observe the
following notes:

1 . Do not apply power to the transformer primary until the

entire system has been installed and checked for shorts
and grounds. The common wires connecting to terminals
1, 2, 3, E and 5 must show open circuit when tested with
an ohmmeter.

2. Use twisted pair wiring as shown. Do not interchange
wires or reverse polarity.

3 . Install PK543A amplifier inside the entrance panel when

using OH190 series housing. If it is necessary to install the
amplifier elsewhere due to temperature extremes (operat­ing temperature range is 0–30°C) or because the entrance
panel is not large enough to house the amplifier, then use
a 2 conductor shielded cable for the entrance panel
speaker (connect shield drain to amplifier terminal G).

4 . The amplifier must be located at least 3 feet (1 meter) from

the transformer or other electrical devices.

5. Do not run wiring for station common wires and entrance
panel speaker in the same cable and/or conduit. This will
cause feedback on the system.

6 . Door release wiring should be run separate from entrance

panel speaker wiring.

Postal Timer Set SW4 to ON (right) and SW5 to

OFF (left) to make postal control timer
independent at 25 seconds

PK543 Compatible Set SW4 to OFF (left) and SW5 to

ON (right) for PK543 drop-in
replacement*

Door Hold Time Out Set SW6 to OFF (left) to activate this

feature

T alk Interlock Set SW7 to OFF (left) to activate this

feature (available for 4-wire stations
only)

* For PK543 Compatible mode, set SW4 OFF, SW5 ON,

SW6 ON & SW7 ON. Also remove JP5 shunt, set J2 to
shunt 1–2 and set J1 shunt to 2–3.

The Entrance T one setting, when active, will generate a user
feedback tone at the entrance panel when users press call
buttons. If the warble tone is in use and the entrance tone
feature is active, the tone will also be heard through the
entrance panel speaker when the call button is pressed.

The Door Hold Time Out setting, when active, will allow the
door control device (doorstrike, maglock, etc.) to time out
normally, despite the DOOR button being held at the suite.

The T alk Interlock setting, when active, will require that the

TALK button (at the suite) is pressed before the DOOR button

will activate the door control device.

SHUNT AND DIPSWITCH SETTINGS

Set the dipswitches on the PK543A as per application
requirements. See also Figure 3—PK543A Shunts and
Settings. The selectable features and controls are as follows:

Shunt JP5 Install for maglock applications. Maximum

current for maglock is 500 mA at 12 VDC, or
250 mA at 24 VDC.

Shunt J2 Place shunt across: 1–2 for doorstrike

applications; 2–3 for maglock applications

Shunt J1 Place shunt across: 1–2 for +12 VDC maglock;

2–3 for +24 VDC maglock or AC/DC doorstrike
applications

Short Door Time Set SW1 to ON (right) and SW2 to

OFF (left), 2 seconds

Medium Door Time Set SW1 to OFF (left) and SW2 to

ON (right), 10 seconds

Long Door Time Set SW1 to OFF (left) and SW2 to

OFF (left), 25 seconds

Entrance T one Set SW3 to ON (right) to activate this

feature—must use warble tone

OPTIONAL ACCESSORIES

Install optional accessories according to the instructions
provided.

FINISH & TEST INSTALLATION

1 . Confirm that all equipment is properly installed.
2 . Connect power to transformer primary (120 VAC), and

ensure that local electrical codes have been complied
with.

3. At the entrance panel, push each button and verify that
the correct suite is called.

4. At each suite, push the TALK and LISTEN buttons to
communicate with a person at the entrance panel. Then
push the DOOR button to confirm that the door release
operates correctly.

ADJUSTMENTS

Voice Volume and Tone Volume can be adjusted on the

amplifier, via the access hole, with a small screwdriver .

Page 2 • IL826 PK543A Installation Instructions

Copyright © T ekT one Sound & Signal Mfg., Inc. All Rights Reserved.

TROUBLESHOOTING

(refer to theory drawing for additional information)

Entire System Dead

If power LED is not illuminated, check for 16 VAC at
transformer secondary and 120 VAC at transformer
primary. If LED is illuminated, review field wiring and
perform direct test using one of the apartment stations to
eliminate field wiring.

No Talk

Check wiring to terminals 1 and 2, and check whether
wiring to entrance panel speaker is shorted or open. Suite
station can be swap tested with another working unit.

No Listen

Check wiring to terminals 1 and 3, or for short between
terminals 1 and 2. Check to see if wiring to entrance panel
speaker is shorted or open. Suite station can be swap
tested with another working unit.

No Door Operation

Check wiring to door release for shorts and opens, or for
defective door release. Confirm that shunts are properly
set for door release type and that connections to
appropriate output have been made. Check wiring to
terminals 2 and 3, or 1 and E (depending upon suite
station type).

No Call Tone

Check wiring to terminal Z or ZW to entrance panel, related
entrance panel call buttons, and suite station X terminal.
Suite station can be swap tested with another working
unit.

Excessive Hum or Distortion

Check whether wiring is installed too close to electrical
wiring or electrical devices; amplifier installed too close
to transformers or other electrical devices; twisted pair
wiring not used as required; or amplifier voice volume
set too high.

Radio Interference

Connect G terminal from amplifier to electrical ground.

Note: This connection is not shown on the wiring
diagram, since the situation is not always improved by
adding it. If the problem persists, consult the factory or

service representative.

SIGNAL FLOW AND THEORY OF

OPERATION FOR PK543A AMPLIFIER

AND APARTMENT INTERCOM SYSTEM

The following example describes an apartment intercom
system using a PK543A in conjunction with a 4-wire suite
station. Refer also to Figure 4—PK543A Theory Diagram.

Call Button

Pressing a suite station call button on the entrance panel
routes the call tone from the Z or ZW terminal on the
PK543A to the X terminal (tone in) on the associated
suite station. This signal then passes through the speaker
and returns to the PK543A via the 1 terminal (audio
common). If the warble tone is in use and the entrance
tone feature is active, the tone will also be heard through
the entrance panel speaker when the call button is
pressed.

Talk Button

Pressing the
suite station’s internal speaker to terminals 1 and 2 of the
PK543A, which serves as an audio input to the amplifier.
The audio is then amplified and sent to terminals A and G,
which are connected to the entrance panel’s speaker
(speaker mode).

Listen Button

Pressing the LISTEN button at a suite station connects
the suite station’s internal speaker to terminals 1 and 3 of
the PK543A, which serves as an audio output from the
amplifier. This allows the suite station to receive the
amplified audio being received by the amplifier on
terminals A and G from the entrance panel speaker
(microphone mode).

Door Button

Pressing the DOOR button at a suite station creates a
closure between terminals 2 and 3 on the PK543A. This
state is sensed by the amplifier and causes the door
release to be activated (output specifics are based on
PK543A settings). This state is also triggered by shorting
terminals 1 and E as is typically done by a postal lock.

TALK button at a suite station connects the

Oscillation(feedback or howling)

Reduce the voice volume until oscillation is eliminated. If
oscillation stops when the call tone wire is removed from
ZW, set entrance tone (SW3) to the OFF (left) position.

Copyright © T ekT one Sound & Signal Mfg., Inc. All Rights Reserved.

IL826 PK543A Installation Instructions • Page 3