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Mounting the power supply module
Instead of the battery, a power supply module
(110 V / 230 V with connected cable, 24 V with
terminals) can also be installed. This is done by
moving the red locking hatch to the left to open the
right-hand compartment for the power supply
module. Remove the right-hand outside rubber
sleeve upward, pull out the plugs and thread the
connecting cable (line voltage) of the module
through the sleeve. Insert the module in the upper
right-hand corner of the electronic unit and re-insert
the sleeve with the cable from above. Connect the
conductors as labeled. Plug the other connecting
cable (low voltage) onto the plug connector on the
circuit board.
Note: For the 24 V AC/DC version, cable with a
diameter greater than 5.0...6.0 mm should not be
used!
The 110 V / 230 V versions must only be
connected by an electrician!
When replacing a unit after the calibration period
has elapsed, swing out the power supply module
with the cable and sleeve, mount the new heat
meter, and re-insert the module. Because it
complies with safety class II, the line power supply
does not have to be disconnected.
Interfaces of the electronic unit
The UH50 heat meters are equipped with an optical
interface per EN 62056-21:2002 as standard.
Moreover, up to two of the following communication
modules can be used for remote reading:
•
Pulse module (pulses for quantity of heat /
volume / unit status / tariff register 1 / tariff
register 2; isolated, bounce-free)
•
CL module (passive 20 mA current loop per EN
62056-21:2002)
•
M-bus module per EN 1434-3, fixed and
extended, variable protocol (also for coupling
with a suitagle heating controller)
•
Analog module
•
Radio module
•
Multi-module (external)
These modules are have no effect on consumption
metering and can therefore also be replaced at any
time without violating the adhesive label.
Communication modules
In
the
lower
right-hand
communcation modules can be installed in the
factory.
At a later installation the necessary ESD protection
measures has to be considered.
UH50 Ultrasonic Heat Meter
area,
up
to
two
Installation and Service Instructions
Adhesive label
For further technical details and data on the module,
see the technical documentation.
Terminals
2-pole and 4-pole terminals are used for connecting
external cables to the modules.
Strip-back length 5 mm
Connection capacity
− rigid or flexible, 0.2 - 2.5 mm²
− flexible with end ferrules, 0.25 - 1.5 mm²
− conductor sizes 26 - 14 AWG
Multiple-conductor connection (2 conductors of
same cross-section)
− rigid or flexible, 0.2 – 0.75 mm²
− flexible with end ferrules without plastic
sleeve, 0.25 – 0.34 mm²
− flexible with TWIN ferrules with plastic
sleeve, 0.5 – 0.75 mm²
Recommended screwdriver:
− 0.6 x 3.5 mm
Tightening torque: 0.4 Nm
Permissible combinations of modules
A pulse module with "fast" pulses must always be
inserted as module 2. Note: Subsequent mounting of
a further pulse module in module slot 1 can result in
changed output values for module 2!
The radio module must also always be inserted as
module 2.
Further restrictions are shown in the following table.
UH 206-101c
Module 1 Module 2
Sleeves
Page 4 / 8
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