Isolated Contact Output
Characteristics
Isolated contact output (simplified schematic)
The isolated contact output ports have the following characteristics:
- Isolated contact
- Polarized output
- Galvanic isolation
- each output is individually isolated
- isolation voltage: 500 VAC RMS
- Maximum current: 100 mA
- Maximum open state voltage (measured across pins): +/- 30 V
- Maximum closed state voltage (measured across pins):
- 1 V at 100 mA
- 0.4 V at 1 mA (same as for LVTTL driver)
- Fast switching speed:
- 5 µs (or better) turn-ON and turn-OFF time
- 100 kHz max frequency
- Typical switching performance at 25°C:
Current (mA) |
Turn-ON time delay (µs) |
Turn-OFF time delay (µs) |
0.5 |
2.0 |
4.8 |
1.0 |
2.0 |
3.9 |
4.0 |
2.2 |
3.3 |
10 |
2.3 |
2.7 |
40 |
2.3 |
2.7 |
100 |
2.3 |
2.7 |
- Remains in the OFF-state until the port is under control of the application
The state of the port is reported through the OutputState MultiCam parameter.
Compatible Loads
Any load within the 30 V / 100 mA envelope is accepted. The power originates from an external power source or alternatively from the power delivered through the 5V/12V and GND pins of the SYSTEM connector.
Electrical Circuits Examples
In this circuit, the current is supplied by the system device.
Notes
- The isolated output is polarized.
- In case of polarity reversal, the output port acts as a closed contact.
- The isolated output is capable to deliver up to 100 mA and to switch voltages up to 30 V.
- Exceeding 100 mA or 30V may damage the output port.
- The +5V/+12V power may be delivered by the board.