Expand an existing Aiphone IS Series local intercom system with the Aiphone IS-SCU Add-On Control Unit.

Designed for use with the IS-CCU Central Control Unit, the IS-SCU adds capacity for up to 8 additional master stations and 8 additional video door, audio door, or room sub stations.

The controller also provides 4 PA paging outputs, 4 programmable contact outputs, and 2 BNC video outputs, making it an important expansion component for larger legacy IS Series security communication systems.

The Aiphone IS Series is discontinued, so the IS-SCU is intended primarily for maintenance, replacement, and expansion of existing installed systems.

Key Features

• Genuine Aiphone IS-SCU

• Add-On Control Unit

• Designed for legacy Aiphone IS Series

• Requires IS-CCU Central Control Unit

• Adds up to 8 master stations

• Adds up to 8 door / room sub stations

• Supports video door stations

• Supports audio door stations

• Supports room sub stations

• 4 PA paging outputs

• 4 programmable contact outputs

• 2 BNC NTSC video outputs

• Supports 2 talk channels

• Supports 2 video channels

• Supports 1 chime channel

• Up to 2 IS-SCU units per IS-CCU

• Connects to IS-CCU using CAT-5e/6

• 48VDC operation

• Powered by compatible IS Series power supply

• Rack or wall mounting

• Fits standard 19" equipment rack

• Requires 2U rack space

• Heavy-duty steel enclosure

• Designed for indoor equipment-room installation

• Legacy / discontinued Aiphone equipment

Product Specifications

Manufacturer: Aiphone
Model: IS-SCU
Series: IS Series
Product Type: Add-On Control Unit
Product Status: Discontinued / Legacy
Primary Controller: IS-CCU
Maximum IS-SCU Units Per IS-CCU: 2
Master Station Capacity: Up to 8 per IS-SCU
Door / Sub Station Capacity: Up to 8 per IS-SCU
Talk Channels: 2
Video Channels: 2
Chime Channels: 1
PA Outputs: 4
Programmable Contact Outputs: 4
Video Outputs: 2
Video Output Type: BNC
Video Format: NTSC 1 Vp-p
Power: 48VDC
Recommended Legacy Power Supply: IS-PU-UL
Current Consumption: Approximately 1A Maximum per Product Specification
Mounting: 19" Rack or Wall Mount
Rack Space: 2U
Housing Material: Steel Plate
Color: Black
Operating Temperature: 32°F to 104°F (0°C to 40°C)
Width: 16-3/4"
Height: Approximately 3-3/8" to 3-1/2"
Depth: Approximately 11-1/16" to 11-11/16"
Weight: Approximately 8.82 lb / 4.0 kg

IS Series Expansion Controller

The IS-SCU expands the station capacity of an:

IS-CCU – Central Control Unit

The IS-CCU forms the core of a local IS Series intercom system.

Adding an IS-SCU provides additional physical station ports for larger applications that require more:

• Master stations

• Video door stations

• Audio door stations

• Room sub stations

Adds 8 Master Stations

Each IS-SCU supports up to:

8 Master Stations

Compatible legacy master equipment can include:

IS-MV – Color Monitor Master Station

The IS-MV provides:

• Video monitoring

• Hands-free communication

• Handset communication

• Door calling

• Paging

• Door release

• Station-to-station communication

Adds 8 Door / Sub Stations

Each IS-SCU supports up to:

8 Door or Room Sub Stations

The eight available ports can support compatible combinations of:

• Video door stations

• Audio door stations

• Room sub stations

Exact station combinations must follow the original Aiphone IS Series system design.

Compatible Legacy Door Stations

Applicable IS Series stations include models such as:

• IS-DV – Surface-Mount Video Door Station

• IS-DVF – Flush-Mount Video Door Station

• IS-SS – Audio Door Station

• IS-RS – Room Sub Station

Some specialized or modified versions of these stations may also have been used in IS Series installations.

Verify the exact existing system before ordering replacement equipment.

Two IS-SCU Units Per IS-CCU

Aiphone allows up to:

2 IS-SCU Add-On Control Units

to be connected to one:

IS-CCU Central Control Unit

Each add-on controller provides:

• 8 additional master ports

• 8 additional door / sub station ports

This substantially increases station capacity beyond the IS-CCU alone.

Connection to IS-CCU

Each IS-SCU connects to the IS-CCU using:

3 CAT-5e / CAT-6 Cables

These inter-controller connections carry the required system communication between the central controller and add-on controller.

These dedicated controller connections should not be treated as standard Ethernet LAN connections.

Follow the original Aiphone IS Series installation manual when connecting the controllers.

Important Network Warning

The IS-SCU includes modular-style connections that may physically resemble standard Ethernet ports.

However, dedicated controller and station ports should only be connected according to Aiphone's IS Series wiring instructions.

Do not connect dedicated IS controller ports directly to a standard LAN unless the specific port is identified by Aiphone for network use.

Improper connections can damage equipment.

4 PA Paging Outputs

The IS-SCU provides:

4 PA Outputs

These can be used to interface the IS Series with compatible external public-address equipment.

Applications can include:

• Paging amplifiers

• Building speakers

• Announcement systems

• Emergency notification equipment

External amplification and speakers are supplied separately.

Scheduled Announcements

Within a properly configured IS Series installation, the system can support features such as:

• Scheduled bells

• Scheduled announcements

• Customized audio

• Emergency broadcasts

Available functions depend on the IS-CCU programming and connected equipment.

4 Programmable Contact Outputs

The IS-SCU provides:

4 Programmable Contact Outputs

These outputs can be assigned within the system for compatible auxiliary control functions.

Possible uses may include:

• Door release

• External relay activation

• Signaling equipment

• Lighting control

• Auxiliary security equipment

Always verify output ratings and use an external relay when required by the connected load.

Dual BNC Video Outputs

The IS-SCU includes:

2 BNC Video Outputs

Video format:

NTSC 1 Vp-p

These outputs correspond to the IS Series video channels and can interface with compatible video equipment.

Potential applications include:

• Video monitors

• Recording equipment

• Security systems

• Other compatible analog video devices

Two Talk Channels

The IS-SCU supports:

2 Talk Channels

This allows multiple compatible system communication functions according to the overall IS Series architecture.

Two Video Channels

The controller also supports:

2 Video Channels

These video paths correspond with the system's supported camera/door-station communication and BNC outputs.

One Chime Channel

The IS Series architecture also provides:

1 Chime Channel

for applicable call and notification functions.

48VDC Power

The IS-SCU operates on:

48VDC

The original specified Aiphone power supply is:

IS-PU-UL – 48VDC Power Supply Unit

The power supply is sold separately.

Because both the controller and original IS-PU-UL are legacy products, confirm the existing system and power requirements before replacement.

Station Power Distribution

Compatible IS master and door stations receive applicable operating power through the connected IS control equipment.

The IS-SCU therefore functions as both:

• Expansion interface

• Station connection point

• Power-distribution point for applicable connected stations

System power capacity must be calculated according to the original Aiphone design.

Browser-Based System Setup

The IS Series local system is configured through the:

IS-CCU web interface

A PC is required for initial programming and system configuration.

System programming can include:

• Station registration

• Station naming

• Call destinations

• Paging

• Contact outputs

• Door release

• Transfer functions

• Emergency functions

• System schedules

Legacy Browser Considerations

The IS Series web interface was designed around older browser and security technologies.

Modern computers may require special configuration to access certain legacy IS Series web interfaces.

Existing programming files, IP settings, and system credentials should be backed up before making controller changes.

Call Transfer

Depending on system programming, an IS Series installation can support:

• Station-to-station calling

• Call transfer

• Automatic call forwarding

• Failed-call forwarding

• Door-station transfer

These functions are programmed through the IS-CCU.

Emergency Communication

The IS Series was designed for security and facility communication applications.

Applicable system features can include:

• Emergency calls

• Priority calls

• Emergency paging

• Group paging

• All-call announcements

• External PA integration

Available functions depend on installed stations and system programming.

Rack Mounting

The IS-SCU can mount in a standard:

19" EIA Equipment Rack

Required rack space:

2U

This makes it suitable for installation with:

• Security equipment

• Network equipment

• Access-control panels

• Video equipment

• Other IS Series controllers

Wall Mounting

The IS-SCU can also be installed on a wall using the appropriate mounting method and brackets.

This is useful in:

• Electrical rooms

• Security rooms

• Telecommunications closets

• Equipment rooms

• Low-voltage control areas

Steel Construction

The controller uses a:

Steel Plate Enclosure

with a black finish.

It is intended for protected indoor installation rather than outdoor or exposed environments.

Operating Temperature

Operating range:

32°F to 104°F

or:

0°C to 40°C

The IS-SCU should be installed in a conditioned or protected equipment location.

IS-SCU vs. IS-CCU

IS-CCU

Central Control Unit

The primary controller for a local IS Series system.

Provides:

• Core system processing

• Network interface

• Main station connections

• System programming

• Central system control

IS-SCU

Add-On Control Unit

Used to increase capacity.

Adds:

• 8 master station ports

• 8 door/sub station ports

• PA outputs

• Contact outputs

• Video outputs

The IS-SCU cannot operate as a standalone central controller.

IS-SCU Requires IS-CCU

The IS-SCU is an expansion controller only.

It requires an existing:

IS-CCU Central Control Unit

to function.

Do not order the IS-SCU as a standalone intercom controller.

Legacy / Discontinued Product

The Aiphone IS Series was discontinued June 30, 2021.

The IS-SCU is therefore best suited for:

• Existing-system repairs

• Spare-part inventory

• Replacement applications

• Legacy-system expansion where supported

• Maintenance of installed IS systems

It should not normally be specified as the basis for a new intercom system.

New-System Upgrade Path

For new commercial and institutional installations, consider Aiphone's current IP-based platforms such as:

• IX Series

• IXG Series

These newer platforms provide current networking, programming, station, and system-management capabilities.

The correct upgrade path depends on the existing IS Series stations, wiring, network, paging requirements, and integrations.

The IX or IXG platform should not be assumed to be a direct plug-in replacement for an existing IS-SCU/IS-CCU system.

Ideal Applications

• Existing Aiphone IS Series systems

• Security offices

• Commercial buildings

• Corporate campuses

• Educational facilities

• Healthcare facilities

• Industrial facilities

• Government buildings

• Parking facilities

• Legacy video intercom systems

• Existing IS-CCU expansion

• Replacement controller applications

• IS Series maintenance inventory

Important Ordering Information

This listing is for the:

Aiphone IS-SCU Add-On Control Unit

The IS-SCU is a:

Legacy / Discontinued IS Series Product

It requires an existing compatible:

IS-CCU Central Control Unit

The following are sold separately unless specifically stated:

• IS-CCU central control unit

• IS-PU-UL power supply

• Master stations

• Door stations

• Room sub stations

• CAT-5e / CAT-6 cabling

• PA amplifier equipment

• External relays

• Rack hardware

• Other IS Series accessories

Before ordering, verify:

• Existing controller model

• Current station count

• Existing IS-SCU quantity

• Available controller ports

• Power-supply capacity

• Connected station models

• System programming

• Existing wiring