Discrete Output, 4-Channel, High Current (to 2 A)
The DT3 provides four isolated, high current & voltage (up to 2 A, 65 VDC) discrete output switching channels.
Arranged and power sourced in channel pairs, the individual module channel(s) can control and switch load outputs for either single or dual power supply applications. With a single source power supply (VCC & GND), the channel(s) can be connected to a load and provide either hi-side (current source) or lo-side (current sink) discrete load current switching. With dual power supply sources (VCC & VSS), the channel(s) can be connected to a load to provide push-pull discrete load current switching (dual source current switching from both a positive and negative power supply).
- ID/Type: High-current, individual, discrete isolated current switches; DT3: 4-Channel (2-channels are paired and share VCC/VSS power supply source inputs)
- Voltage Range:: ±5 to ±35 VDC / Channel max. (external supplied dual source VCC & VSS); 5 to 65 VDC / Channel max. (external supplied single source VCC & GND); Note: Channel pair power input sources are/must be referenced to the channel pair ISO_GND
- Overvoltage Surge Protection: 75 VDC max. (clamped)
- Output Mode Formats (programmable per channel): Mode 0: Standard mode. User has two registers: “Output Drive H/L” and “Tristate Output”. When tristate is set to ‘0’, Output is the state that’s set by the “Output drive H/L” register. When tristate is set to ‘1’, Output is tristated. Mode 1: PWM mode. PWM Output command; PWM Continuous or Burst modes (n-times)
- Channel Off (tristate): High-Z (>2 MΩ)
- Output Current: 2 A per channel, maximum
- Output Impedance: <0.1 Ω
- System Protection: All output(s) are set to “OFF” (at Power-ON and reset). No voltage transients on power-on or power-off.
- Load & Channel Protection: Short circuit protected. Channel shuts “off” and a flag is set when current exceeds 10% maximum current rating > 50ms. Channel over-current reset by control/status register command.
- Switching Frequency: Up to 500 kHz maximum (for PWM mode).
- +VCC & -VSS Voltage Measurement: User can read source voltage(s). Voltage: LSB = 100 mV; Accuracy: ±1V (tbd)
- Output Voltage Measurement: User can read voltage of each channel. Voltage: LSB = 100 mV; Accuracy: ±1V (tbd)
- Output Current Measurement: User can read current of each channel. Current: LSB = 1 mA; Accuracy: ±15 mA (tbd)
- Isolation: Module power source (ISO-GND) and I/O to system ground is ≥500 VDC
- Power: 5 VDC / 105 mA (max) (does not include source powered load)
- Weight: 1.5 oz. (42 g)
- PWM Output Mode Operation: Individual Output Mode: PWM Continuous or PWM Burst (n-times)
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NAI’s Configurable Open Systems Architecture™ (COSA®) offers a choice of over 70 smart I/O, communication, and Ethernet switch functions, providing the highest packaging density and greatest flexibility of any multifunction I/O board in the industry. Preexisting, fully-tested functions can be combined quickly and easily in an unlimited number of ways. Each I/O function has dedicated processing, unburdening the system Single Board Computer (SBC) from unnecessary data management overhead.
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