6 Annex
72
Measuring circuit monitoring
The device response in the event of a fault is configurable.
6.1.2
Digital inputs (options 1 and 2)
Measuring probe
Probe break
Short-circuit
Polarity
Thermocouple
is detected
is not detected
is detected in certain
conditions
1
RTD temperature probe
is detected
is detected
is not detected
Resistance transmitter
is detected
is not detected
is not detected
Resistance/potentiometer
is detected
is not detected
is not detected
Voltage 0 to 70 mV
is detected
is not detected
is detected
Voltage 0 to 10 V
is not detected
is not detected
is detected
Voltage -10 to +10 V
is not detected
is not detected
is not detected
Voltage 0 to 1 V
is detected
is not detected
is detected
Voltage -1 to +1 V
is detected
is not detected
is not detected
Current 0 to 20 mA
is not detected
is not detected
is not detected
Current 4 to 20 mA
is detected
is detected
is detected
1
dependent on the set characteristic line
Quantity
0, 6, or 12
Connector number (back of
device)
6 and 10
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)
Auxiliary voltage
DC 24 V +10/-15 %, max. 50 mA per option