Switching characteristics
The output circuit of the EL22xx is optimized for fast signal output, even at higher currents. To this end the EL22xx features a push/pull output stage that actively switches to 24 V and 0 V. The push stage is overcurrent- and short circuit-protected, the pull stage (switching to 0 V) is not. This may have to be taken into account when inductive loads are switched off. The time required by a signal change as a rising/falling edge from the central controller (ESC, EtherCAT slave controller) to the connection at the front of the terminal is specified as TON/TOFF < 1 µs for the EL22xx range, both for a rising (TON) and a falling edge (TOFF). Due to this short absolute signal cycle time the temperature drift during the cycle time is also very low.
The edge steepness of the output drivers is < 1 µs/24 V. The power supply of the EL22xx should be dimensioned according to the power requirements of the connected actuators. The power supply lines, power supply unit and actuator lines should be suitably short or generous respectively.
In Tristate mode each channel can be switched to high-resistance.
 | Measurement of time delay While optimized electronic components make the delay between the physically real edge at the ESC output and the edge at the terminal point very short (< 1 µs), it is not negligible. If the user has a particular need for precision, calibration must be carried out, and the precise time delay measured in accordance with the environmental conditions. |