Johnson Controls ISO-8J Short Circuit Isolation Module

General Description

The ISO-8J Short Circuit Isolation Module is engineered to enhance fire alarm systems' protection by isolating short circuits that may occur in the signaling line circuit. This module is essential for maintaining system integrity, allowing for the continued operation of other devices on the same loop even when a fault occurs. Its design ensures that safety is prioritized in critical fire detection environments.

Technical Specifications

l Model: ISO-8J

l Operating Voltage: 15 to 32 VDC

l Maximum Current Draw: 5 mA

l Temperature Range: -10°C to +50°C (14°F to 122°F)

l Humidity Range: 10% to 93% (non-condensing)

l Dimensions: 4.5" (11.43 cm) x 4" (10.16 cm) x 1.25" (3.175 cm)

l Mounting Requirements: Compatible with standard electrical boxes

Detailed Features

l Short Circuit Isolation: The module isolates faulty sections of the SLC loop, preventing disruption to other connected devices.

l Automatic Fault Recovery: Normal communication is automatically restored once the short circuit condition is resolved.

l LED Indicators: These are equipped with LED indicators that display the module's status and alert users to detected faults.

l Durable Construction: Designed to withstand various environmental conditions while maintaining reliable performance.

Applications of Johnson Controls ISO-8J

The ISO-8J Short Circuit Isolation Module is suitable for various applications:

1. Commercial Buildings: This product enhances fire safety systems in offices and retail spaces by ensuring uninterrupted operation during faults.

2. Industrial Facilities: Protects manufacturing plants where equipment may cause electrical shorts due to environmental factors.

3. Educational Institutions: Ensures safety in schools and universities by maintaining effective communication in fire alarm systems.

4. Healthcare Facilities: Critical for patient safety, allowing continued monitoring even during a fault condition.

Installation of Johnson Controls ISO-8J

l Preparation:

Gather necessary tools, including screwdrivers, wire strippers, and mounting hardware.

Review the installation manual thoroughly to understand wiring diagrams and specifications.

l Mounting:

Mount the ISO-8J module securely within a standard electrical box, ensuring easy access for maintenance.

Position it according to local codes and best practices for fire alarm installations.

l Wiring:

Connect the power supply to the designated terminals on the module.

Wire it into the SLC loop according to the manufacturer's guidelines, ensuring proper connections are made.

l Testing:

After installation, conduct a functional test by simulating short circuit conditions to verify that isolation occurs as expected.

Check LED indicators to confirm proper operation and fault detection capabilities.

l Final Checks:

Ensure all connections are secure and that the module is mounted correctly.

Perform regular maintenance checks as per manufacturer recommendations to ensure ongoing reliability.

Related Part Numbers

l ISO-7J

l ISO-X

l ISO-SC

Previous: CMX-8JD