Technical data of the digital inputs/outputs if used as outputsΒΆ
| Parameter | Value | |
|---|---|---|
| Number of channels per module | Max. 16 transistor outputs | |
| Reference potential for all outputs | Terminals 1.9, 2.9, 3.9 and 4.9 (negative pole of the process supply voltage, signal name ZP) | |
| Common power supply voltage | For all outputs: terminals 1.8, 2.8, 3.8 and 4.8 (positive pole of the process supply voltage, signal name UP) | |
| Output voltage for signal 1 | UP (-0.8 V) | |
| Output delay (0->1 or 1->0) | On request | |
| Output current | ||
| Rated value, per channel | 500 mA at UP = 24 V | |
| Maximum value (all channels together) | 8 A | |
| Leakage current with signal 0 | < 0.5 mA | |
| Rated protection fuse on UP | 10 A fast | |
| Demagnetization when inductive loads are switched off | With varistors integrated in the module (see figure below) | |
| Switching frequency | ||
| With resistive load | On request | |
| With inductive loads | Max. 0.5 Hz | |
| With lamp loads | Max. 11 Hz with max. 5 W | |
| Short-circuit proof / overload proof | Yes | |
| Overload message (I > 0.7 A) | Yes, after ca. 100 ms | |
| Output current limitation | Yes, automatic reactivation after short-circuit/overload | |
| Resistance to feedback against 24V signals | Yes | |
| Max. cable length | ||
| Shielded | 1000 m | |
| Unshielded | 600 m | |
The following drawing shows the circuitry of a digital input/output with the varistors for demagnetization when inductive loads are switched off.
Digital input/output (circuit diagram)