3M 2475 User Manual

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Wired Intercom System

Performance Series

Models 2470 and 2475

Installation Instructions

FCC Information

This device complies with part 15 of the FCC rules. Operation is subject to the following conditions:

This device must not cause harmful interference.

This device must accept any interference received including interference that may cause undesired operation.

Changes or modifications not expressly approved by the party responsible for compliance could void the user’s authority to operate the equipment.

3M (IPC) 2002. All rights reserved.

Call (800) 328-0033

Performance Series

Front Matter

 

 

Revision Record

 

 

 

Date

Revision

Reason For Change

 

 

 

2/02/02

01

Preliminary manual released

4/08/02

02

Preliminary second draft

4/11/02

03

Preliminary third draft

4/15/02

A

Manual Released

4/19/04

B

Revisions made

i

Front Matter

Performance Series

Table of Contents

 

System Components....................................................................................

1

I/O Card and Noise Reduction Module Installation................................

2

I/O Card Installation ................................................................................................

2

3M Model A125, Noise Reduction Module, Installation (Optional)....................

3

Component Placement................................................................................

4

Communications Controller.....................................................................................

4

Power Supply...........................................................................................................

4

Call Stations.............................................................................................................

5

Station Selectors ......................................................................................................

5

Wiring the System.......................................................................................

6

Configuration Worksheets.......................................................................................

7

Wiring Call Stations ................................................................................................

7

Wiring Station Selectors..........................................................................................

7

Wiring Communications Controller ........................................................................

8

Initializing the System ................................................................................

9

System Mode Selection: ..........................................................................................

9

Initialization instructions for Pump Mode (factory default)....................................

10

Initialization Instructions for Island Mode ..............................................................

10

Programming the System ...........................................................................

11

Programming State ..................................................................................................

11

Error Message..........................................................................................................

12

Parameter Selection .................................................................................................

12

Keypad Function Definitions (for Text entry) (Programming State) ......................

15

Adjusting the System ..................................................................................

17

Inbound Audio Volume Level .................................................................................

17

VOX (Voice Operated Transmission) Sensitivity Level .........................................

17

Outbound Talk Volume Level .................................................................................

17

Outbound Music/Messaging Volume Level (Only for systems that use

 

Music/Messaging) ......................................................................................

18

Testing the Functions...............................................................................................

18

Configuration Worksheets .........................................................................

19

ii

Performance Series

System Components

System Components

The Performance Series Intercom System consists of:

A minimum of one Model 2475 Station Selector

One Model 2470 Communications Controller

A maximum of 24 Call Stations

The system provides two-wayaudio communication between the Station Selector and the 24 call stations. The system also provides communications between station selectors. It is a single channel,half-duplex,wired system. Figure 1 shows the components.

Figure 1. D-2400Intercom System Components

Material Required (Not Supplied)

Assortment of screws, anchors, and cable clamps.

Sufficient twisted pair sets of audio cable to connect other components such as Station Selector, Call Stations, etc. See Figure 1.

! Important

The wires for the speaker connection must be twisted pairs and shielded for proper operation.

1

I/O Board and Noise Reduction Module

Performance Series

Installation

 

I/O Card and Noise Reduction Module Installation

I/O Card Installation

Be sure the system is powered off!

1.

Remove 4 screws on each side of the Communications

 

 

 

Controller cover.

 

2.

Remove cover.

 

 

Note: Insert I/O cards beginning from connector J5. Add

 

 

additional I/O cards sequentially (J6, J7, etc.).

 

3.

Remove slot cover and mounting screw. Refer to Figure 2.

 

4.

Remove all terminal blocks from edge of I/O card.

 

5.

Insert I/O card into I/O connector by pressing gently into

 

 

place.

 

6.

Use slot cover mounting screw to secure I/O card to

 

 

chassis.

 

7.

Insert terminal blocks into I/O card station ports.

 

8.

Repeat until all I/O cards are installed.

 

9.

Replace cover and 8 screws.

Figure 2. I/O Card Installation

 

! Important

 

A larger power supply must be used if more than four (4).

 

I/O cards are installed. Use D2470-20power supply Part

 

Number 78-8117-4153-3when more than four (4) I/O cards

 

are installed.

 

After the larger power supply is installed, Remove the

 

following Warning label:

WARNING

Do not add any I/O cards to these slots unless power supply output rating exceeds 4 Amps. See installation instructions for details.

Note

If adding additional I/O cards after initial installation, you must reprogram parameter 03, “max stations.”

2

Performance Series

I/O Card and Noise Reduction Module

 

Installation

3M Model A125, Noise Reduction

Module, Installation (Optional)

Figure 3. Noise Reduction Module

Installation

Be sure the system is powered off!. Refer to Figure 3.

The optional 3M™ A125 Noise Reduction board (3M part number 78-9236-6453-2)improves the inbound intelligibility of an intercom system by reducing environmental background noise from vehicles, airplanes, noisy intersections, wind, etc.

1.On the A125 circuit board, set the jumpers and switches as follows:

Set JMP1 and JMP2 to position A.

Set SW1 number 1 ON

Set SW1 number 2 ON

Set SW1 number 3 as desired:

--With SW1 number 3 OFF, the A125 is set for restaurant noise reduction.

--With SW1 number 3 ON, the A125 is set for truck stop noise , which provides more noise reduction with slightly more voice degradation.

Set SW1 number 4 as desired:

--With SW2 number 4 ON, the higher-endfrequencies are increased by 3 dB. This should be set to the customer’s preference.

SW1 numbers 5 and 6 are not used.

2.Remove 4 screws on each side of Communications Controller cover.

3.Remove cover.

4.Plug Noise Reduction Module ribbon cable into Connector J12.

5.Use upper and lower mounting brackets to secure Noise Reduction Module to Communications Controller chassis as shown in Figure 3.

6.On the Model 2470 circuit board, Set JMP1 to open. LED1 (adjacent to JMP1) blinks when noise reduction module is active.

7.Replace cover and 8 screws.

3

Component Placement

Performance Series

Component Placement

This section describes placement of the Performance Series Intercom System components:

Communications Controller

For proper system operation, locate the Communications Controller:

1.Near the conduit termination of the Call Station wiring.

2.Near the power source.

3.At least 10 feet away from electrical noise sources such as the following:

-large electrical motors (such as air conditioners, freezers, and coolers)

-any electrical components that arc (i.e., relays)

-ballasts (for light fixtures)

4.In a secure room away from traffic.

5.Approximately 5 feet above the floor.

6.Where it is accessible from the top, bottom, and both sides.

7.In a dry and heated (between 50° and 100° Fahrenheit) location.

See Figure 4.

Power Supply

Locate the power supply as follows:

1.Install the power supply mounting bracket in a preferred location, as shown in Figure 4.

2.Insert the power supply transformer into the mounting bracket, as shown in Figure 4.

Figure 4. Suggested Communications Controller Placement

4

Performance Series

Component Placement

Call Stations

For proper system operation, install the Call Stations in locations:

1.Chosen for ease of use.

2.At least 48 inches above the pavement.

Note

Local codes may dictate placement of call stations.

Figure 5. Suggested Call Station Placement

Station Selectors

For proper system operation, locate the Station Selectors:

1.At locations chosen for maximum efficiency.

2.On counters, mounted on pedestals, or mounted on walls.

3.In dry and heated areas.

Figure 6. Suggested Station Selector Station Placement

5

Wiring the System

Performance Series

Wiring the System

Depending on distance, use twisted pair, 14-22AWG audio cables when wiring the Wired Intercom System, components. Figure 7 shows an overview of the cable types and number of conductors required for each unit. Table 1 shows wire gauge required for different distances between components. We recommend installing a separate power supply transformer (3M part number78-8095-0910-8),for each Station Selector located over 100 feet from the Communications Controller,

Note:

The RS 485 cable carries DC power for the Station Selectors, requiring a larger gauge wire.

Figure 7. Cable and Connection Requirements

All Audio Wiring

 

Distance Between

Wire Gauge

Components

22

Up to-309feet

20

310-493feet

18

494-783feet

16

784-1245feet

14

1246-1980feet

RS 485 Cable (only)

 

Distance Between

Wire Gauge

Components

22

Up to 62 feet

20

63-99feet

18

100-157feet

16

158-249feet

14

250-396feet

Table 1. Wire Size Requirements

6