Communication; Electronic Unit Interfaces; M-Bus; Pulse Output - Ista ultego III smart plus Technical Description

Communication

9 Communication

Electronic unit interfaces

9.1

M-Bus

9.2

Pulse output

The meter is equipped with an optical interface in accordance with EN 62056-
21:2002 as standard.
Note: You can find further information in their respective documen-
tation.
If the meter is equipped with the option M-Bus, it is supplied with a 2-wire ca-
ble which you can extend by fitting a junction box.
Standard
Reading interval
Note: Frequent turning on and off of the M-Bus voltage can lead to
reduction of battery lifetime.
The pulse output permits the transmission of energy or volume equivalent
pulses.
Two channels are available. Their functions can be parameterized with the
service software or can be adapted in the "Para menu" of the meter.
Available are standard pulses or high-definition pulses.
The pulse duration is identical for channel 1 and channel 2.
Cable labelling
Cable
Cable diameter
Output type
Voltage
Current
Dielectric strength
Classification
ON/OFF resistance
Output connection
EN 13757-2 and -3
>1 min @ 2400 baud
passive pulse output
1.5 m; 4-wired, LL84201 4xAWG28 /
0.2 mm²
4 mm
open drain
max. 30 V
max. 30 mA
500 V
eff
OB/OC (acc. to EN 1434-2)
<74 Ω / 6 MΩ
against ground
19/26