Morningstar ▶ Advanced System Control Morningstar Relay Driver RD-1 Multi-Channel Programmable Logic Relay | 12V-48V System Control | Generator Start & Alarm Functions The Morningstar Relay Driver RD-1 is a highly versatile, fully programmable logic relay module designed to provide advanced control and automation for your solar power and off-grid systems. This robust device offers unparalleled flexibility, enabling you to manage various system functions such as high/low voltage alarms, load control, and generator start/stop operations. It can operate as a standalone unit by monitoring battery voltage or integrate seamlessly with Morningstar TriStar controllers via MeterBus for comprehensive system data analysis. With its four independent relay driver outputs, the RD-1 allows for precise, condition-based actions, whether you need to switch appliances, activate cooling systems, or trigger alarms based on specific parameters like battery voltage or temperature. Its industrial design and comprehensive electronic protections ensure high reliability and durability in diverse environments. SYSTEM FLEXIBILITY: The RD-1 can be programmed for standalone operation or integrated with compatible Morningstar controllers for enhanced monitoring and control capabilities. Key Features ▶ Four Independent Channels — Provides up to four high-level system control functions. ▶ Fully Programmable Logic — Easy configuration via PC software (MSView) for custom control scenarios. ▶ Advanced Generator Control — Supports 1, 2, or 3-wire generator schemes with flexible parameters. ▶ Versatile Data Inputs — Reads battery voltage in standalone mode or comprehensive data from TriStar controllers. ▶ High Reliability & Protection — Each channel features complete electronic protections for robust operation. ▶ Industrial Design — Suitable for DIN rail or flat surface mounting in various installations. ▶ Modbus Compatibility — Direct control via RS-232 for integration with PLCs and industrial hardware. Technical Specifications Parameter Value Model RD-1 Number of Channels 4 Nominal System Voltage 12V / 24V / 36V / 48V Operating Voltage Range 8V - 68V Maximum Channel Current 750 mA Self-Consumption < 20 mA Transient Surge Protection 1500W / channel Operating Temperature -40°C to +45°C Communication Ports RJ-11 MeterBus, RS-232 Dimensions (L x W x H) 163 x 81 x 33 mm Weight 0.2 kg Advanced Control & Logic The Morningstar Relay Driver RD-1 offers sophisticated control capabilities through its programmable logic, allowing for precise management of your energy system. Control Mode Description & Functionality Threshold Control Continuously monitors parameters like battery voltage or temperature, triggering actions when defined setpoints are reached. This enables automated load shedding, charging activation, or alarm signalling. GenStart Mode Provides advanced generator control, supporting 1, 2, or 3-wire schemes with programmable parameters for preheat, crank, ignition, and cool-down sequences. Alarm/Fault Response Activates channels in response to alarms or faults detected from connected Morningstar devices, such as overcurrent, short circuits, or overheating. The RD-1 can combine multiple channels using 'AND/OR' logic for complex event-triggered actions, offering a high degree of customisation for your specific system requirements. Typical Applications Application Description Generator Auto-Start Automatically starts a generator based on low battery voltage or other programmable conditions. Load Management Disconnects or connects loads (e.g., pumps, motors) based on battery voltage levels to prevent over-discharge or manage power. Temperature Control Activates cooling fans or heating elements for battery enclosures or equipment based on temperature thresholds. Alarm & Signalling Triggers audible or visual alarms in response to system faults, high/low voltage conditions, or other critical events. Built-In Protection Functions The Morningstar Relay Driver RD-1 is engineered for reliability and safety. It includes Transient Surge Protection of 1500W per channel to safeguard against power spikes. Each of its four channels benefits from complete electronic protections, ensuring high reliability and preventing damage from various electrical conditions. The unit is designed to respond to faults and alarms from connected devices, enabling proactive system management and protection. Common Questions What is the Morningstar Relay Driver RD-1 used for? The RD-1 is a logic module used for high-level system control functions such as managing high/low voltage alarms, controlling loads, and initiating generator start/stop sequences in solar and off-grid power systems. Is the RD-1 compatible with other Morningstar products? Yes, the RD-1 can be used as a standalone device or integrated with compatible Morningstar controllers, particularly the TriStar series, via MeterBus for enhanced data input and control. Are external relays required with the RD-1? Yes, the RD-1 provides four independent relay driver outputs, meaning it switches the negative side of a relay coil to ground. External relays (not included) are required to perform the actual switching of loads or signals. How is the RD-1 programmed? The Relay Driver RD-1 is easily programmed using Morningstar's free MSView PC software via a serial RS-232 port connection. This allows for customisation of thresholds, logic, and control parameters. Installation Notes Installation should be performed by a qualified professional in accordance with local electrical codes and Morningstar's instruction manual. Ensure adequate ventilation around the unit for optimal operating temperature. The RD-1 can be mounted on a DIN rail or a flat surface. Proper wiring of external relays is crucial for correct functionality; refer to the manual for detailed diagrams. A PC connection cable is included for programming, requiring a computer with an RS-232 serial port or a suitable USB-to-serial adapter. Before You Buy Verify your system's nominal voltage (12V, 24V, 36V, or 48V) matches the RD-1's capabilities. Confirm the need for external relays, as they are not supplied with the RD-1. Consider the specific control functions you require (e.g., generator start, load shedding, alarms) to ensure the RD-1 meets your system's needs. Review the Morningstar RD-1 manual for detailed programming options and compatibility with your existing Morningstar devices. Ensure you have access to a PC for programming the unit using the MSView software. Always verify product specifications and compatibility with your specific solar energy system components before purchase. All information is based on manufacturer data and verified sources. The Morningstar Relay Driver RD-1 comes with a 5-year manufacturer warranty.
Checkout happens on the official store. This page mirrors catalog facts in plain HTML for direct reading and crawlability.
