Edwards 4-MPLT EST4 Mounting Plate

The Edwards 4-MPLT Mounting Plate is a mechanical cabinet accessory for Edwards EST4 fire alarm systems. It provides an internal mounting surface for optional modules and related equipment within compatible EST4 cabinets and remote closet enclosures.

Edwards specifies that the 4-MPLT can occupy either a chassis space or the battery space of a cabinet when the batteries are mounted remotely, allowing unused cabinet capacity to be repurposed for system expansion.

Product Functions

• Provides an internal equipment mounting plate
• Designed for Edwards EST4 systems
• Installs in an available chassis space
• Installs in an unused battery space
• Supports mounting of compatible optional equipment
• Allows cabinet battery space to be repurposed when batteries are remote
• Supports compatible network and interface modules
• Provides a platform for DIN-rail-mounted equipment
• Requires no independent operating power
• Functions as a passive cabinet accessory

Chassis Space Installation

The 4-MPLT can be installed in an available chassis position inside a compatible Edwards enclosure.

This provides a dedicated mounting surface for optional equipment that does not install directly onto the standard local rail architecture.

Edwards’ ordering information describes the product as:

4-MPLT — Mounting Plate, mounts in Chassis or Battery Space.

Battery Space Installation

The 4-MPLT can also occupy the cabinet’s battery compartment when standby batteries are installed remotely.

Edwards specifically documents this arrangement for cabinets including:

3-CAB7B

3-CAB14B

3-CAB21B.

Compatible remote closet cabinets can use the same approach, allowing the battery area to support optional equipment when batteries are located elsewhere.

Optional Equipment Support

The 4-MPLT supports several types of compatible EST4 equipment.

One specifically documented example is the:

4-NET-XT Network Extender Module

Edwards states that the 4-NET-XT mounts to a DIN rail on a separately ordered 4-MPLT.

The 4-NET-AD Network Adder Module can also be installed on the 4-MPLT, providing additional flexibility for EST4 network expansion.

Audio/Telephone Equipment Support

Current Edwards audio and telephone documentation also references the 4-MPLT as a mounting platform.

The 4-LCDAUDTELCAB-MPLT configuration combines an Audio/Telephone Control LCD module with a 4-MPLT for installation in compatible cabinets and annunciator enclosures.

This demonstrates that the plate can support more than network hardware; its application depends on the specific EST4 equipment and cabinet configuration.

Passive Operation

The 4-MPLT is a mechanical mounting component and contains no independent fire alarm electronics.

Therefore, it requires no:

Operating Voltage: Not applicable
Standby Current: Not applicable
Alarm Current: Not applicable
Device Address: Not applicable
Network Address: Not applicable

Electrical requirements are determined entirely by the equipment installed on the plate.

Installation Information

The 4-MPLT installs within the appropriate EST4 cabinet location. When used in the battery compartment, the cabinet batteries must be mounted remotely in an approved arrangement before the battery space can be repurposed.

After the mounting plate is secured, compatible optional equipment, DIN rail, or interface modules can be attached according to the installation instructions for those components.

Edwards lists the 4-MPLT with a shipping weight of approximately: 4.3 lb / 1.95 kg.

4-MPLT Datasheet