IOUT* Isolated Contact Output Ports

Applies to:

Isolated contact output (simplified schematic)

The output port implements an isolated contact output.

DC characteristics

Parameter Conditions Min. Typ. Max. Units
Current       100 mA
Differential voltage Open state -30   30 V
Closed state @ 1 mA     0.4 V
Closed state @ 100 mA     1.0 V
□ The output port in the closed state has no current limiter, the user circuit must be designed to avoid excessive currents that could destroy the output port.
□ The output port remains in the OFF-state until it is under control of the application.

AC characteristics

Parameter Min. Typ. Max. Units
Pulse rate 0   100 kHz
Turn-on time     5 µs
Turn-off time     5 µs

Typical switching performance @ 25°C

Current [mA] Turn ON time [µs] Turn OFF time [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

Isolation characteristics

Parameter Value
Isolation grade Functional
Max. DC voltage 250 V
Max. AC voltage 170 VRMS

The functional isolation is only for the circuit technical protection. It does not provide an isolation that can protect a human being from electrical shock!

Compatible loads

The following loads are compatible with the isolated contact output ports:

● 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 12 V and GND pins of the I/O connectors.

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.