Relay Driver
The Relay Driver™ adds intelligent automation and control to off-grid power systems, enabling programmable load control, generator start/stop, alarm signaling, and system monitoring. Designed to operate as a standalone controller or integrate with compatible Morningstar products, the Relay Driver helps automate critical system functions and simplify remote power management.
- Intelligent system automation for load control, generator start/stop, and alarm signaling.
- Four configurable channels, each operating as either an analog input or relay driver output for flexible system design.
- Standalone or integrated operation, with support for MeterBus™ communication to read data from compatible Morningstar controllers, inverters, and additional Relay Drivers.
- Advanced monitoring and control of battery voltage, analog inputs, ambient temperature, faults, and alarms.
- Industrial integration with Modbus® over RS-232 for communication with PLCs and other control equipment.
- Expandable architecture, allowing multiple Relay Drivers to communicate and coordinate system logic.
Note: For integrated automation within GenStar™ and ReadyEdge™, see the ReadyRelay™ ReadyBlock.
Specifications & Certifications
| Model | RD-1 |
|---|---|
| *voltage of user selected relays must be same as battery voltage | |
| System Voltage | 12 to 48 volts* |
| Max. Channel Current | 750mA |
| Voltage Accuracy | 2% +/- 50 mV |
| Temperature Accuracy | +/- 2C |
| Minimum Operating Voltage | 8V |
| Maximum Operating Voltage | 68V |
| Self Consumption | <20mA |
| Operating Temperature Range | -40C to +45C |
| Temperature Sensor Range | -40C to +85C |
| Transient Surge Protection | 1500W/channel |
| Warranty | 5 Years |
| CE and RoHS | Yes |
| Manufactured in a Certified ISO 9001 Facility | Yes |
Key Features
- Cost-effective and Highly reliable
- Fully Programmable
- Advanced Generator Control
- Industrial Design
- LED Indicators
- 4 independent relay driver outputs (relays not included)
- Used for high/low voltage alarms, load control, and generator start
- Reads digital data inputs from ‘compatible’ controllers and inverters
- Reads battery voltage in systems with other controllers
Videos
The Relay Driver and Its Applications | Recorded Webinar
This presentation discusses how you can use Morningstar’s Relay Driver to facilitate generator starts, notifications, advanced lighting controls, prioritize loads and eliminate unnecessary system components.