Current output 4–20 mA: ≤ 500 Ω
The load impedance range of the current output 4–20 mA does not comply with IEC 61131-2.
(IEC 61131-2 requires a load impedance range of ≤ 600 Ω.)
Update time
The update time corresponds to the task interval of the application program
that actuates the output.
The task interval (and thereby the update time of the outputs) is set in the task configuration of
the MACS development environment.
Rise time T10/90

Rise time T10/90 of QAIO 2/2 Analog Outputs Protection Continuous short-circuit protection; overvoltage protection up to ±36 V Short-circuit current IKmax Voltage output ±10 V: IKmax = ±15 mA Current output ±10 mA: IKmax = ±10.92 mA Current output ±50 mA: IKmax = ±54.61 mA Current output 4–20 mA: IKmax = ±20.74 mA
Recommended cable types
Use only shielded cables.
The shield must be made of copper braiding with at least 80% coverage.
The wire must be made of copper with a cross section of at least 0.25 mm2 (23 AWG).
In environments with a high amount of disturbance, use cables with twisted pair wires.
Calibration
The QAIO 2/2 is calibrated at the factory and does not require any additional
calibration.
Permissible load types
Resistive load according to "Load impedance range"
The stability of the current outputs is ensured up to an inductive
load of 100 mH.
The stability of the voltage outputs is ensured up to a capacitive
load of 10 µF.
Output current of the voltage output
Max. 10 mA
Wire fault monitoring of the analog current outputs
The analog current outputs are monitored for wire faults. The status of the wire fault monitoring can
be evaluated in the application program.
4.3 Reference Voltage Output
Reference voltage
+10 V DC
Load current
Max. 5 mA
Precision
±0.3 % of full scale value
Temperature coefficient
< 280 µV/K
Output impedance
< 0.2 Ω
Protection
Continuous short-circuit protection; overvoltage protection up to ±36 V
Short-circuit current
IKmax = 15 mA (residual current of the terminals 91 (REF) and 100
(REF) of the connector X6)