Technical data
23
3.5.1
Pulse and signal inputs
Data
Value
Unit
Open-circuit voltage U
0
(at DE1 and DE2)
typ.
2.7
V
Open-circuit voltage U
0
(at DE3 and DE4)
typ.
3.1
V
Internal resistance R
I
> 1
MΩ
Short circuit current I
K
max.
5
μA
Switch point "ON":
▪
Resistance R
e
max.
100
kΩ
▪
Voltage U
e
max.
0.8
V
Switch point "OFF":
▪
Resistance R
a
min.
2
MΩ
▪
Voltage U
a
min.
3
V
Pulse duration t
e
min.
62.5
ms
Pause duration t
a
min.
62.5
ms
Counting frequency f
max.
10
Hz
Cable length
max.
30
m
Cable cross-section
0,3 … 2,5
mm
2
The maximum counting frequency of the digital inputs can be adjusted
using the "enSuite" software. The limit values specified for frequency and
duration shall only apply if the so-called "software debounce" has been
switched off.
The maximum counting frequency is parameterized to 2 Hz
as a default. Changing parameters to f
max
≤ 10 Hz is only
possible with skilled, qualified staff and when administrator
or calibration lock is open. Changes to the input frequency
must be documented by the operator of the device.
If the software debounce is parameterized to a frequency
higher than 2 Hz, then it may lead to counting errors
caused by electromagnetic interference under certain
circumstances.
Summary of Contents for DL230
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Page 98: ...98 Appendix 9 3 EC Declaration of Conformity ...
Page 99: ...Appendix 99 9 4 ATEX Type Examination Certificate 9 4 1 Associated apparatus for Zone 0 1 ...
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