MADDALENA microCLIMA U - 9.5.3 Pulse Output Electrical Requirements; 9.5.4 Setting Up Pulse Inputs; 9.5.5 Pulse Input Set-up Possibilities; 9.5.6 6-Wire Cable Pin Assignments

2015_03_03 9
9.5.3 Electrical requirements on the pulse output of the instrument to be connected (e.g. flow meter)
Pulse output class
(passive) output OA (reed contact/electronic switch) or OC (open collector)
according to EN 1434-2:2007
Pulse length "on"
≥ 100 ms
Pulse length "off"
≥ 100 ms
Current
= 1.5 µA
Resistance "contact open"
≥ 6 MΩ
Resistance "contact closed"
≤ 3 kΩ
9.5.4 Setting up the two additional pulse inputs
The optional pulse inputs 1 + 2 for external meters can be set up using the “Device Monitor” configuration
software.
The input pulse value, the units and the starting values of the external meters can be configured.
9.5.5 Set-up possibilities
Pulse value
Units
1
litres/kWh/pulse without unit
2,5
litres/kWh/pulse without unit
10
litres/kWh/pulse without unit
25
litres/kWh/pulse without unit
100
litres/kWh/pulse without unit
250
litres/kWh/pulse without unit
1000
litres/kWh/pulse without unit
Installation notes for pulse inputs
It is important that the pulse cables not be affected by (or exposed to) the M-Bus voltage!
Check the polarity of pulse generators with ‘open collector’ outputs.
The cable wires must not touch each other during installation, otherwise pulses will be counted in the instrument.
When setting up the meter it may be necessary to adjust the meter reading of the instruments connected and the
pulse value using the Device Monitor software.
9.5.6 Pin assignments 6-wire cable (only in conjunction with M-Bus)
Pin
Colour
Connection
1
White
IE1+
2
Brown
IE1┴
3
Green
IE2┴
4
Yellow
IE2+
5
Grey
M-Bus
6
Pink
M-Bus
9.5.7 Pin assignments 4-wire cable (only in conjunction with radio)
Pin
Colour
Connection
1
Yellow
IE1+
2
Green
IE1┴
3
Brown
IE2┴
4
White
IE2+
9.6 Potential-free pulse output (optional)
The potential-free pulse output is an electronic switch that outputs counting pulses of the meter which can be used
for any purpose.
The pulse output closes, corresponding to the pulse value shown on the type identification label on the instrument.