Elster EK280 - 3.7 Digital outputs

Technical data 25
3.7 Digital outputs
The digital outputs DA2 and DA3 can be configured as low or high frequen-
cy pulse or signal outputs.
The digital outputs DA1 and DA4 can exclusively be configured as low fre-
quency pulse or signal outputs.
3.7.1 Nominal data
Data
Value
Unit
Maximum switching voltage
30
V DC
Maximum switching current
100
mA DC
Maximum voltage drop
1
V
Maximum residual current
0.001
mA
3.7.2 LF pulse or signal outputs
Data
Value
Unit
Pulse duration
min.
125
ms
Pause duration
min.
125
ms
Output frequency
max.
4
Hz
3.7.3 HF pulse outputs
The use of outputs as high frequency output is only possible if an external
power supply has been connected (see chapter 0).
Only outputs 2 and 3 (terminals DA2 and DA3) can be used as high fre-
quency output.
Data
Value
Unit
Output frequency
max. 1000
Hz
If the HF output is fed via a FE260, the maximum output fre-
quency is limited to 500 Hz (depending on the configuration
of the outputs).