Delta Isolated Analog Interface Module for SM3300 Series View larger

Delta Isolated Analog Interface Module for SM3300 Series

INT MOD ANA

New product

Control the output of the SM3300 with an analog dc voltage, 0-5V or 0-10V selectable.

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Call 1300 853 407 For Price

$208.06 tax excl.

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Features:

  • High accuracy, low drift
  • 16 bit AD and DA conversion
  • Compatible with other Delta Elektronika 15p analog interfaces
  • Isolated from the output voltage, working voltage 1000 V DC
  • Floating relative to earth
  • Factory calibrated for optimum accuracy



Typical Applications:

  • Analog programming of voltage and current
  • Analog monitoring of voltage and current
  • Remote monitoring of the status signals: OverTemp, Limit, PowerSink OverLoad
  • Remote Shut down of the power output using a 5V signal

Specifications

 

Isolated Analog

Analog Programming

 

The output voltage and current can be programmed by a voltage in the range of 0-5V or 0-10V, proportional to the full output voltage and current. (see fig 7-4)

 

The range 0-5V or 0-10V can be selected by ethernet command only.

 

Both have a protection circuit formed by a series resistor and a parallel zener diode. The capacitor limits the speed to a safe value. Note that the programming inputs are floating with regards to the power output.

 

To program the unit by current instead of voltage, simply use a parallel resistor asa current to voltage converter (see fig 7-5)

 

Programming Speed

 

Programming from a low to a high output voltage is nearly load independant. See the unit's specifications.

 

Programming down to a low voltage takes more time on lighter loads. This is caused by the output capacitors, which can only be discharged by the load because the power supply cannot sink current.

 

With the optional power sink, the programming down speed would then also be nearly load independant.

 

With the optional high speed programming, the rise and fall time is 5 to 25 times faster. Note that with this option, the output ripple is higher.

 

Analog Monitoring

 

The monitor outputs give a voltage in the range of 0-5V or 0-10V, proportional to the output current or voltage. The output current can easily be measured using the I-monitor (see fig 7-6).

 

The range 0-5V or 0-10V can be selected by ethernet command only.

 

Note that the monitor outputs are floating with regards to the power supply output (similar to signals from the ISO AMP)

 

The monitor outputs are buffered with op-amp's and protected with series resistors and zener diodes.

 

The table above shows the impedance levels of the monitoring outputs.

 

The monitoring outputs can drive a meter directly (fig 7-6)

 

Note: on a pulsating load, the current monitor will not exactly match the output current. This is mainly caused by the current through the output capacitors.