Battery Power Supply (One Or Two Batteries); Pin Assignment Of Cable - Diehl Metering 171A/B Instructions De Montage Et D'utilisation

HYDRUS
4.

Battery power supply (one or two batteries)

ƒ
Standard version with one 3.6 VDC lithium battery with a battery
lifetime of up to 12 years depending on configuration and installation
location.
ƒ
Meter version with two 3.6 VDC lithium batteries with a battery life
time of up to 16 years depending on configuration and installation
location.
Batteries cannot be retrofitted or replaced!
5.

Pin assignment of cable

The M-Bus, L-Bus or pulse variant of the meter is supplied with a 1.5-m
long 3-wire cable with wire end ferrules.
Power supply takes place via the internal battery. An external
power supply via a M-Bus Master is not possible.
Version/colour Pulse
white
brown
green
Galvanic isolation
Because of possible damage due to electrical corrosion a poten-
tial tension between the ground connection of the L-Bus / Pulse
output and the meter housing (brass) should be avoided.
-16-
Deutsch
Pulse 2
GND (ground)
Pulse 1
Français
English
L-Bus/pulse
Pulse 2
GND (ground)
L-Bus
Português
M-Bus
(2 wire)
M-Bus
–
M-Bus