The **FLM-Z1-R** is an addressable Relay Module manufactured by **Bosch**, designed for use within their Fire Alarm Systems (FACP). It is a critical component used to interface the fire panel with external systems like elevators, HVAC units, and door closers. --- ### 1. Technical Specifications Below are the primary electrical and physical specifications for the device: | Feature | Specification | | :--- | :--- | | **Operating Voltage** | 15 VDC to 33 VDC | | **Current Consumption** | < 0.2 mA (Standby) / 1.5 mA (Active LED) | | **Contact Rating** | 2.0 A @ 30 VDC / 0.5 A @ 125 VAC | | **Relay Type** | Form C (Dry Contact) | | **Addressing Method** | Rotary Switches (000-254) | | **Temperature Range** | -4°F to 122°F (-20°C to 50°C) | --- ### 2. Key Electronic Components & Design The FLM-Z1-R consists of several integrated subsystems that allow it to communicate and perform switching tasks: * **Integrated Microprocessor:** Manages the digital communication with the Fire Alarm Control Panel (FACP) using a proprietary protocol. It handles self-diagnostics and status reporting. * **Rotary Addressing Switches:** Three decimal rotary switches on the front of the module allow for manual address setting. This ensures the panel can identify the specific location and function of the relay. * **Form C Relay (Electromechanical):** The "R" in the model stands for Relay. It provides a set of **Normally Open (NO)** and **Normally Closed (NC)** contacts with a common terminal. * **LED Status Indicator:** A built-in bicolor LED flashes green during normal polling and turns steady red when the relay is activated. * **EEPROM:** Stores the device’s unique ID and configuration data, ensuring settings are preserved even during power loss. --- ### 3. Wiring Configuration The module features specific terminals for the Signaling Line Circuit (SLC) and the controlled load: 1. **Terminals 1 & 2 (SLC In/Out):** Connects to the main loop of the Fire Alarm Control Panel. 2. **Terminals 3 & 4 (Relay Contacts):** Connection for the Common (C) and Normally Closed (NC) circuit. 3. **Terminals 5 & 6 (Relay Contacts):** Connection for the Common (C) and Normally Open (NO) circuit. --- ### 4. Safety & Compliance * **Galvanic Isolation:** The electronic circuitry is isolated from the relay contacts to prevent external electrical surges from damaging the fire alarm loop. * **Supervision:** The module is "supervised" by the panel; if the module is removed or fails, the FACP will trigger a "Trouble" condition.