Siemens SITRANS FUE950 Operating Instructions Manual page 32

Connecting
5.4 Add-on output and input modules
Figure 5-4
- The pulse-rate is programmable in a wide range with steps of 1 litre per pulse (via free
using the software tool).
- The input unit is selectable with m
1. Signal input C: terminal C and ⊥ (ground)
2. Signal input D: terminal D and ⊥ (ground)
- Max. pulse input frequency: 8 Hz with a pulse duration ≥ 10 ms.
- Input resistance: 2.2 MOhm.
- Terminal voltage: 3 V DC
- Data is separately cumulated in different registers. Also accounting days are available.
- Connected cable length should be less than 10 m (shielded cable is recommended).
Pulse output module
The device is available with an add-on module for two optional pulse outputs, if specified on
ordering (default 1 least significant digit).
Figure 5-5
Standard function for pulse output A (terminal A) is accumulated energy and settings are
shown as Out1 in display menu 3. Standard function for pulse output B (terminal B) is
accumulated volume and shown as Out2 in display menu 3. The pulse output is active (low,
"contact closed") for changing with least significant figure in display (accumulated energy or
volume). Default is 1 decimal place, e.g. 0.1 MWh/Pulse.
The functions and settings of the outputs can be freely programmed using a software tool
and the IrDA interface, e.g. default settings for pulse values can be changed with the factors
0.1, 1, 10 and 100.
30
Pulse input module
Pulse output module
volume unit, all internal energy units or no unit.
3
Operating Instructions, 01/2010, SFIDK.PS.022.F4.02
SITRANS FUE950