Viking pf-6a Service Manual

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Page 1

Telecommunication Peripheral Products

Technical Practice

PF-6A

Power Fail Bypass

or Ground to

Loop Start Converter

March 23, 2000

Power Failure Bypass System

With the PF-6A, you will continue to receive your calls, during phone system and power outages. The PF-6A bypass unit connects 6 preassigned single line station phones directly to the C.O. trunks you have assigned. A built in ground start converter permits outbound calls from standard phones.

When the system is restored, you will not lose calls. Viking’s PF-6A bypass unit will reconnect phones to their station circuits after they become idle.

The PF-6A can be configured to operate when power is lost or from an opening/closing of an alarm contact or manual closure.

The PF-6A can also be used to convert six incoming ground start lines to loop start lines. This accommodates installation of telephony equipment requiring loop start lines (i.e: key systems, call sequencers, answering machines, voice mail, etc.).

VIKING©

http://www.VikingElectronics.com

E-mail...Sales@VikingElectronics.com

Features Applications

• Transfers six C.O. trunks directly to the designated analog station phones

• Stackable to increase capacity

• Allows you to receive calls as well as make calls during power or system failure

• Compatible with loop start lines or 48V ground start lines

• Prevents busy signals or unanswered calls during power and system failures

• Converts ground start lines to standard loop start lines

Sales...(715) 386 - 8861

Made in the U.S.A.

• Automatic ground start converter eliminates “ground start buttons”

• Power restoration will not interrupt calls in progress

• Operates on power failure or normally open normally closed alarm contacts

Specifications

Power: 120 V AC/13.8V AC 1.25A, UL listed adapter provided or 24-48V DC, 100mA

Dimensions: 187mm x 127mm x 45mm (7.35” x 5” x 1.75”) Shipping Weight: .91 kg (2 lbs) Environmental: 0°C to 32°C (32°F to 90°F) with 5% to 95% non-

condensing humidity

Connections: (1) RJ21X, (1) RJ11

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Normally Open

Contact Input

Installation

1 2 3 4

TEST

AUTOMATIC LINE

TRANSFER SWITCH

EXTERNAL

ALARM

VIKING©

MODEL PF-6A

RJ21X

Test Button Dip Switches

POWER ACTIVE

VIKING ELECTRONICS, INC. HUDSON, WI 54016

Note: The unit can also be powered

by 24-48V DC PABX battery supply on terminals 50 and 25.

POWER and ACTIVE LED - The POWER LED and the ACTIVE LED will be lit when the PF-6A is in the normal operating mode. The ACTIVE LED will go out and the POWER LED will stay lit when the test button is pressed.

RJ21X Female Connector

Important: This unit is not protected against damage from power line surges. A surge protector is recommended if

operated on 120V AC.

A. Power Fail Bypass Unit

It is recommended that the first six C.O. lines be interfaced with the PF-6A as shown in the chart to the right.

If your system has an alarm contact or manual transfer switch, you must connect it to the red and green wires of the modular jack labeled EXTERNAL ALARM on the left side of the PF-6A. This must be a normally open maintained contact closure. If normally closed alarm contacts are used, wire them to break the power to the PF-6A when they open.

Normally Open

Maintained

Contact Input

PABX/KSUC.O. Line

1 2 3 4

TEST

AUTOMATIC LINE

TRANSFER SWITCH

EXTERNAL

ALARM

VIKING©

MODEL PF-6A

POWER ACTIVE

RJ21X Male

(not included)

RJ21X

VIKING ELECTRONICS, INC. HUDSON, WI 54016

Connector

Note: Loop start and ground start CO lines may be combined on the PF-6A (see Programming). When ground start lines are used, pin 50

(V/S) must be connected to a good earth ground.

Circuit

Circuit 1

Circuit 2

Circuit 3

Circuit 4

Circuit 5

Circuit 6

Station or trunk

Trunk 1 - IN Trunk 1 - OUT Station 1 - IN Station 1 - OUT Trunk 2 - IN Trunk 2 - OUT Station 2 - IN Station 2 - OUT Trunk 3 - IN Trunk 3 - OUT Station 3 - IN

Station 3 - OUT Trunk 4 - IN Trunk 4 - OUT Station 4 - IN Station 4 - OUT Trunk 5 - IN Trunk 5 - OUT Station 5 - IN Station 5 - OUT Trunk 6 - IN Trunk 6 - OUT Station 6 - IN Station 6 - OUT

control line

Line Pins ColorTrunk/station

T1T-IN T1R-IN

T1T-OUT T1R-OUT

S1T-IN S1R-IN

S1T-OUT S1R-OUT

T2T-IN T2R-IN

T2T-OUT T2R-OUT

S2T-IN S2R-IN

S2T-OUT S2R-OUT

T3T-IN T3R-IN

T3T-OUT T3R-OUT

S3T-IN S3R-IN

S3T-OUT S3R-OUT

T4T-IN T4R-IN

T4T-OUT T4R-OUT

S4T-IN S4R-IN

S4T-OUT S4R-OUT

T5T-IN T5R-IN

T5T-OUT T5R-OUT

S5T-IN S5R-IN

S5T-OUT S5R-OUT

T6T-IN T6R-IN

T6T-OUT T6R-OUT

S6T-IN S6R-IN

S6T-OUT S6R-OUT

GND

-24/48V5025

W/BL

BL/W

W/O

O/W

W/G

G/W

W/BN

BN/W

W/S

S/W

R/BL

BL/R

R/O

O/R

R/G

G/R

R/BN

BN/R

R/S

S/R

BK/BL

BL/BK

BK/O

O/BK

BK/G

G/BK

BK/BN

BN/BK

BK/S

S/BK

Y/BL

BL/Y

Y/O

O/Y

Y/GN

GN/Y

Y/BN

BN/Y

Y/S

S/Y

V/BL

BL/V

V/O

O/V

V/GN

GN/V

V/BN

BN/V

V/S S/V

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B. Ground to Loop Start Converter

The ground start converter in the PF-6A will only work properly when connected in series with the ground start trunks as shown below.

Note: The C.O. lines must be connected in the correct polarity.

Line Pins Color

T1T-IN

T1R-IN

T2T-IN

T2R-IN

T3T-IN

T3R-IN

T4T-IN

T4R-IN

T5T-IN

T5R-IN

T6T-IN

T6R-IN

GND 50

30 34

38 13

42 17

Line

W/BL BL/W

W/S S/W

R/BN BN/R

BK/G

G/BK

Y/O

O/Y

V/BL

BL/V

S1T-OUT

S1R-OUT

S2T-OUT

S2R-OUT

S3T-OUT

S3R-OUT

S4T-OUT

S4R-OUT

S5T-OUT

S5R-OUT

S6T-OUT

S6R-OUT

Pins Color

W/BN

BN/W

R/G

G/R

BK/O

O/BK

Y/BL

BL/Y

Y/S

S/Y

V/BN

BN/V

V/S

C.O.

Lines

Incoming

Ground Start

Trunks

Tip

Ring Tip

Ring

Loop Start

Lines Out

Tip

Ring

Tip

Ring

Tip

Ring

Tip

Ring

Tip

Ring

Tip

Ring

PABX/KSU

1 2 3 4 5

1 2 3 4

TEST

AUTOMATIC LINE

TRANSFER SWITCH

EXTERNAL

ALARM

VIKING©

MODEL PF-6A

POWER ACTIVE

RJ21X

VIKING ELECTRONICS, INC. HUDSON, WI 54016

EARTH GROUND (V/S)

Important: Pin 50 must be connected to a

good earth ground for the PF-6A to function properly with ground start lines.

Important: Do NO connect the power adapter when using the PF-6A in the Ground to Loop Start application.

RJ21X Male

Connector

(not included)

Programming

The DIP switches may be used to program loop start or ground start lines. You may also use DIP switch 1 to toggle between normal and bypass mode for testing purposes.

1 2 3 4

TEST

AUTOMATIC LINE

TRANSFER SWITCH

EXTERNAL

ALARM

VIKING©

MODEL PF-6A

POWER ACTIVE

RJ21X

VIKING ELECTRONICS, INC. HUDSON, WI 54016

Dip Switch ON/OFF

OFF

Description

Normal operation Bypass mode for testing Assigns lines 1, 2, 3 to loop start Assigns lines 1, 2, 3 to ground start Assigns lines 4, 5, 6 to loop start Assigns lines 4, 5, 6 to ground start Not used Not used

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Operation

A. Power Fail or System Fail Bypass

DIP Switches

After installation is complete, test the PF-6A by doing one of the following:

1. Press and hold the TEST button

2. Move DIP switch 1 to the ON position

3. Disconnect power to the PF-6A

4. Provide a maintained normally open contact closure to the EXTERNAL ALARM input

Maintained

Normally Open

Contact Closure

After installing and testing the PF-6A, instruct office personnel that in the event of the power failure or system failure that the six assigned telephones will be the only means to receive and place calls.

While the PF-6A is in normal operating mode, the six C.O. lines are connected to the trunk inputs and the six assigned station circuits are connected to their six telephones.

TEST Button

1 2 3 4

TEST

AUTOMATIC LINE

TRANSFER SWITCH

EXTERNAL

ALARM

VIKING©

MODEL PF-6A

POWER ACTIVE

RJ21X

VIKING ELECTRONICS, INC. HUDSON, WI 54016

In the event of either a power failure or a major PABX alarm, the PF-6A will shift into the bypass mode. In this mode, the six C.O. trunks are instantly connected to the six analog telephones designated, bypassing the PABX/KSU.

Incoming calls will now ring directly to the telephones assigned to the six C.O. trunks. Outgoing calls may also be made from each telephone, even on ground start lines.

When power is restored or the major alarm is cleared, the PF-6A will automatically switch back to normal operation. Any C.O. trunk in use at this time will remain connected until the call is completed.

B. Ground to Loop Start Converter

The PF-6A can also be used as a ground start to loop start converter. This accommodates the installation of telephony equipment requiring loop start lines (ie; key systems, call sequencers, answering machines, voice mail systems, etc.), to ground start C.O. trunks. See Installation for proper wiring in this application.

In this application, the PF-6A will not pass disconnect supervision (“hang up” signals) to the loop start equipment. When a hang up occurs, the PF-6A’s ground start converter automatically “restarts” the line and dial tone is returned to the loop start equipment. The loop start equipment will not detect any disconnect, as this “restart” occurs immediately after the hang up. Typically this will cause the loop start equipment to not release the telephone line when a caller abandons. Nothing can be done about this situation, as the PF-6A can not distinguish the difference between this abandon condition and the loop start equipment going “off hook” to make an outgoing call.

Note: The PF-6A can ONLY be used to convert ground start lines to loop start. It can NOT convert loop start lines to ground start.

Product Support Line...(715) 386-8666 Fax Back Line...(715) 386-4345

Due to the dynamic nature of the product design, the information contained in this document is subject to change without notice. Viking Electronics, its affiliates and/or subsidiaries assume no responsibility for errors and/or omissions contained in this information. Revisions of this document or new editions of it may be issued to incorporate such changes.

Printed in the U.S.A. ZF301300 Rev AFax Back Doc # 680