Communication Modules - Ista Ultego III perfect Manual

ultego® III perfect
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 con-
nector on the circuit board..
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)
M-bus module per EN 1434-3, fixed and extended, variable protocol (also for coupling with a suitagle heating controller)
Analog module
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 area, up to two communcation modules can be installed in the factory.
At a later installation the necessary ESD protection measures has to be considered.
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
G.83.0101
ultego® III perfect
ista International GmbH – Grugaplatz 2 – D-45131 Essen
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!
Adhesive label
6.1 - 230608
Module 1
Module 2
Sleeves