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Solid State Latching Power Switch (SSLPS)

Invocon’s Remote Power Control (RPC) Remote Ground Support Equipment (RGSE) provides for power control and monitoring for Avionics or Flight Termination System (FTS) payloads. This includes system monitoring, power switching (e.g., internal/external, on/off), and battery maintenance as well as RS422 communications all through the vehicle’s UMBI(s). The rack is controlled remotely via direct Ethernet connection or through a fiber optic converter for extended range.

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Key Specifications

Specification
Value
Input Voltage
20 to 45 Vdc
Input Current (max)
10.4 A
Output Channels
4 switched outputs, up to 4.8 A each
Control Signal Voltage (Nominal)
28 Vdc
Latch State Change Threshold
>15 Vdc, >10 mA
Power Dropout Survivability (latched on)
Up to 50 ms
UMBI Status
10 kΩ inline current-limiting resistor; 2 kΩ for LED indicator
TM Status Output
0–5 Vdc scaled for power on/off state monitoring
Standard Compliance
RCC 319-19

Key Features

  • Four Independent Latching Outputs

    Each of the four outputs can be independently latched on or off, allowing selective power distribution to multiple FTS or avionics subsystem loads.

  • Nominal 28 Vdc Latching Control

    On and Off control signals each require >15 Vdc and >10 mA to change state. Once the control signal is removed, the switch remains latched in that state.

  • Power Dropout Survivability

    Once latched on, the SSLPS remains in the on state through input power dropouts of up to 50 ms, preventing inadvertent de-powering during transient events.

  • GSE UMBI Situational Awareness

    UMBI feedback includes a 10 kΩ current-limiting resistor for GSE voltage-divider monitoring and a 2 kΩ resistor for illuminating a panel-mount power indicator LED.

  • TM Status Output

    0–5 Vdc telemetry status output provides real-time on/off state data for inclusion in the vehicle PCM telemetry stream.

  • RCC 319-19 Compliant Design

    Designed to RCC 319-19 range safety standard for compatibility with FAA and DoD range FTS power distribution requirements.

Typical Applications

  • FTS Battery Power Distribution

    Distributes FTS battery power to multiple FTS ordnance loads or receivers with independent latch control per channel.

  • Pre-Launch GSE Power Monitoring

    Enables ground crew situational awareness of vehicle power state at the UMBI during launch preparations.

  • Telemetry Power State Monitoring

    Reports on/off switch state on vehicle PCM telemetry for range safety and mission assurance review.

Available Configurations

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