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flowIQ® 3100 TECHNICAL DESCRIPTION
Kamstrup
A/S • Technical Description • 5512
-1242_N1
_GB •
10.2019
61
19.1
Connection Pulse Interface
The pulse interface has two outputs
–
‘V
olume
’
and
‘
Energy
’
. flowIQ® 3100 only uses the volume output.
Each pulse output consists of 3 terminals:
‘
GND
’
,
‘
Volume Pulse
’
and
‘
Pull-up Volume
’
. When the pulse output is
active, Pulse is drawn to GND, i.e.
the output is ’active low‘. A 10kΩ
resistance is placed from Pull-Up to Pulse.
The supply for terminals 1 and 2 and the supply connected to the Pull-Up do not need to be the same or at the
same level. The connection of the 8-pole plug
‘
J1
’
is indicated in figures below/next page.
19.1.1
Connection with pulse receiver without supply.
Here external supply for Pull-up is required
Power supply
Pulse
receiver