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 k
Ω
; R
OFF
:
>
50 k
Ω
(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
μ
s, low-pulse
≥
30
μ
s)
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