Dimensions:
4.00″ x 3.03″ x 0.55H”
Signal Parameters (Input-to-Output):
Accuracy +/-3%
Speed:
Up to 100kHz in non-isolated mode
2kHz when in isolated mode.
Signal and Power Connections:
1 each 4 position screw terminal for signal and power inputs.
1 each 6 position screw terminal for signal and power outputs.
Input Impedance:
500kOhms
Output Resistance:
500 Ohms per Volt (with a source current of 0.002 Amps)
Output Current:
0 to 20mA.
Input to Output Isolation:
2kV optical isolation with option “-3” purchased
Power Requirements:
24–32 VDC @ 4 Watts minimum (dedicated supply)
Voltage and Current Conversion Ranges:
0 to 1VDC, 0 to 5VDC, -5 to +5VDC,
0 to 10VDC, -10 to +10VDC,
0 to 20mA, 4 to 20mA.
NOTE: One input and one output at a time can be selected. Any of these voltages and currents can be selected as either input or output, or both).
Additional Information:
The supply current needed to operate both the input and output circuitry is approximately 100mA. Plug-in style wall transformers with an output voltage range between 24 and 32 Volts DC and a wattage rating of 4.0 Watts are sufficient. An on-board LED provides indication that the power supply is operating. With the “-3” isolation option two power supplies, each with a minimum wattage of 3.2 Watts, are required. In order to achieve 2000 volts of isolation the user-supplied power supplies must also have a minimum of 2000 volts of isolation. Typically UL and CAS approved wall plug-in type transformer power supplies are sufficiently isolated.
Note: The Springboard requires a dedicated power supply. No other devices can be connected to this supply since the Springboard will be pulling the ground connection to -12vdc to produce the negative going signals.
Input and Output Control Signal Selection:An 8 segment DIP switch (sw#1) and a 10 segment DIP switch (sw#2) are used to select input/output combinations. The switches are supplied with the “-2” and “-3” options. Disconnect power before adjusting the switches.
Why is signal isolation important? Isolation can provide additional safety when there is a difference of potential between the controlling device and the device being controlled. The isolation option also reduces faulty readings caused by ground loops, motor noise, and other electrical interferences.
Current loop output:
The current output ranges (4-20mA and 0-20mA) can use the full power supply voltage range to source current. This is helpful when there is a high resistance in the current loop as the source voltage will increase in order to maintain the required current loop signal.
With the 0-20mA or 4-20mA current range selected as the output, the voltage output terminals will output 0-10V or 2-10V respectively. This enables the voltage output to be used as a current monitor .
Cautions when using the current output ranges:
- If a common signal ground is used for both the device producing the control signal and the
device being controlled the Springboard must be operated in the “-3” isolated mode (two
power supplies are required). - If the output signal is a two-wire closed loop system the unit can be operated in the non-
isolated mode (option -1 or -2).
