Simplex 4090-9002 Individual Addressable Relay Module (Form C Relay IAM)

Description

The Simplex 4090-9002 Addressable Relay Module is an enterprise-grade Individual Addressable Module (IAM) engineered to provide precise, addressable remote command control over auxiliary building functions via an integrated Form C contact profile. Utilizing a highly efficient low-power latching relay design, this module draws both its operational tracking power and high-speed telemetry directly from a standard two-wire addressable circuit loop. By removing the costly requirement of extending external power lines to remote spaces, it represents a highly efficient life-safety solution for industrial, commercial, and institutional facilities.

Technical Specifications

Remotely Programmed Form C Control with Auto-Off Communications Fail-Safe

The Simplex 4090-9002 Addressable Relay Module is engineered specifically to interface intelligent fire networks with building control infrastructures. Providing a full set of Form C dry contacts (including Normally Open, Normally Closed, and Common connections), the module lets programming teams execute automated emergency layout scripts. When an alarm condition is validated across the loop, the module trips to switch localized relay contacts, closing magnetic dampers, executing automated elevator capture configurations, commanding emergency stairwell pressurization fans, or dropping air conditioning plant HVAC systems to prevent toxic smoke from filling escape routes.

To maximize system safety margins, the module features a smart, low-power latching architecture that continuously reports contact state feedback to the host panel to verify exact command execution. If building lines are broken or communication is disrupted, the module drops to a safe condition, defaulting to an OFF state upon loop initialization or absolute loss of signaling circuit data. The rugged black thermoplastic housing protects the internal modules from construction dust, while an integrated red LED viewing port delivers rapid diagnostic tracking by flashing every three seconds to verify active panel communication.

• Low Power Latching Design: Draws both command communications and module power entirely from a single pair of wires, reducing wiring installation constraints.
• Built-In Communication Fail-Safe: Automatically sets the relay state to OFF on initial power-up and whenever circuit communication is severed, stopping dangerous control errors.
• Isolated Industrial Mounting Plate: Built with a durable galvanized steel sheet mounting plate attached directly to a black thermoplastic enclosure to handle heavy field use.
• Overvoltage Protection Compatibility: Works smoothly with the Simplex 2081-9044 Overvoltage Protector module to shield circuits along outdoor wire tracks or noisy industrial environments.

Frequently Asked Questions (FAQ)

Q1: What typical building hardware functions are managed by the Simplex 4090-9002 module?
A: It controls critical auxiliary building equipment during an emergency, including automated elevator capture, HVAC system shutdown loops, air pressurization fan activation, and smoke damper control.

Q2: Does this addressable relay module require a separate 24V auxiliary power circuit run?
A: No. Thanks to its smart latching micro-relay construction, the module draws data commands and operating currents entirely from the two-wire IDNet circuit line, reducing hardware and labor expenses.

Q3: What types of connections make up the onboard output contacts?
A: The module contains a true dry Form C single pole double throw (SPDT) contact configuration, providing independent Common, Normally Open (N.O.), and Normally Closed (N.C.) screw terminals.

Q4: What safety steps must be followed if this module is switching a 120VAC line?
A: In accordance with standard installation instructions, high-voltage switching lines must be externally fused with a 1 Amp, 250V quick-blow fuse (such as a Littlefuse AGC1 or equivalent) to protect loop components.

Q5: Can field teams check module communication status without opening the junction box cover?
A: Yes. When paired with optional galvanized trim plates (like the 4090-9801 or 4090-9802), a built-in clear light pipe directs the internal red LED flash through the front cover sheet for simple testing.

Q6: How do project engineers adjust the address parameters on the 4090-9002 module?
A: Device addressing is set manually using an integrated 8-position binary DIP switch module situated securely beneath a re-sealable protective label on the face.

Q7: Which major central console panel networks natively support this relay interface?
A: It integrates with all core addressable IDNet platforms, including the modern Simplex 4007ES, 4010ES, and 4100ES fire alarm control unit series.