11 Annex
268
11.1.2 Digital inputs
11.1.3 Analog outputs
Number Max. 12 (see connection diagram)
Input
Level Logic level 0: < 3.5 V; logic level 1: > 10 V
Sampling rate 125 ms (max. counting frequency: 4 Hz)
Potential-free contact R
ON
: < 1kΩ; R
OFF
: > 50 kΩ (use of auxiliary voltage 24 V)
Auxiliary voltage supply
Voltage DC 24 V +10/-15 %
Current Max. 50 mA per slot
Number Max. 2 (see connection diagram)
Voltage
Output signal DC 0 to 10 V
Load resistance > 500 Ω
Current
Output signal DC 0(4) to 20 mA
Load resistance < 450 Ω
Accuracy 0.5 %
Ambient temperature influence 150 ppm/K