73
6 Annex
6.1.3 Digital inputs/outputs (option 3)
6.1.4 Analog outputs (options 1 and 2)
6.1.5 Relay
Quantity 0 or 12
Connector number (back of
device)
14 and 15
Input or output Individually configurable as input or output
Input
Level Logic level "0": < 3.5 V; logic level "1": > 10 V
Sampling rate 125 ms (max. counting frequency: 8 Hz)
Potential-free contact R
ON
: < 1 kΩ; R
OFF
: > 50 kΩ (use of the auxiliary voltage 24 V)
High-speed input Input 1
Function Counts each positive edge of the input signal
Max. counting frequency 12.5 k Hz
Mark-to-space ratio 30 to 70 % (high-pulse ≥ 30 μs, low-pulse ≥ 30 μs)
Accuracy in flow measurement 0.5 % of measured value; ambient temperature influence: 50 ppm/K
Output
Output signal DC 0/24 V +10/-15 %; galvanically isolated
Current Max. 40 mA per output, max. 100 mA on the whole
Auxiliary voltage DC 24 V +10/-15 %, max. 100 mA (incl. current of digital outputs)
Quantity 0, 1, or 2
Connector number (back of
device)
6 and 10
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
Quantity 1
Connector number (back of
device)
4
Relay (changeover contact)
Switching capacity 3 A at AC 230 V, resistive load
Contact life 30,000 switching operations at rated load
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