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DNR-DIO-433
DNR-DIO-433
Guardian series 32 channel, 600 mA, current sourcing digital output interface with output voltage and current monitoring for the PowerDNR RACKtangle®
 
The DNR-DIO-433 is a 32 channel, digital output boards compatible with "Cube" series chassis. Each channel is configured as a current source and switches voltages between 3.3 and 36 VDC. Each channel is rated for continuous operation at 600 mA with an output voltage drop of less than 550 mV. The DNR-DIO-433 is an ideal digital output interface in a wide variety of data acquisition and control applications.

As part of Guardian series, the DNR-DIO-433 not only controls the digital outputs, it also allows monitoring of each channel’s output voltage and current. This allows the application to detect and flag short and open circuits as well as other "suspicious" behavior. 

The Guardian advantage also includes programmable overcurrent protection. The user may select the current and duration of overload (as short as 10 mS) required before the channel is shut down. Each board provides 350 Vrms isolation and update rates to 1 kHz.

Each channel offers a pulse-width-modulated (PWM) "soft-start/stop" capability. This allows power to be applied/removed gradually, greatly increasing the reliability of devices like incandescent bulbs where thermal shock reduces life expectancy.

The DNR-DIO-433 is fully supported by the UEIDAQ Framework which provides a simple and complete software interface to all popular programming languages, operating systems and data acquisition and control applications (e.g. LabVIEW, DASYLab, MATLAB).
 
Characteristics:
  • 32 digital outputs
  • 600 mA (current source) outputs
  • Wide 3.3 to 36 VDC output range
  • 1 kHz maximum update rate
  • Guardian Series Diagnostics
    • Monitors output current
    • Monitors output voltage
    • Programmable current limit
    • PWM "soft-start" outputs
 
Technical Specifications
Parameters
Number of channels 32 digital outputs
Output configuration Current source
Output port configuration Single 32-bit word
Output Drive 600 mA per channel continuous;
3.5 A peak (100 mS max)
Output ON voltage < 550 mV @ 600 mA (incl. std 3’ cable)
Output ON impedance < 0.9 Ohm (including std 3’ cable)
Output OFF impedance > 1 Meg Ohm
Output OFF leakage < 25 µA
Overvoltage protection ±40 VDC (reverse current must be limited to 1 A to prevent damage)
Overvoltage protection Current Limit 50 mA - 2 A
Overload response time 10-5000 ms (user programmable)
Output Monitoring Configuration Multiplexed, one A/D
Voltage Accuracy ±10 mV max (sampled at 2 Hz)
Current Accuracy ±1 mA, max (sampled at 10 Hz)
Soft-Start/Stop duration 256 µS to 5 seconds
Steady State PWM output 0 to 100% in 0.4% increments. (Minimum 
period is 256 µSec)
Output Throughput Rate 1 kHz max
Power up / reboot state Off
Power dissipation < 2 W, not including output switches
Isolation 350 Vrms
Operating Temp. Range Tested -40 to +85 °C
Operating Humidity 95%, non-condensing
Vibration IEC 60068-2-6 5 g, 10-500 Hz, sinusoidal
IEC 60068-2-64 5 g (rms), 10-500 Hz, broad-band random
Shock IEC 60068-2-27 50 g, 3 ms half sine, 18 shocks @ 6 orientations
30 g, 11 ms half sine, 18 shocks @ 6 orientations
MTBF 260,000 hours