Brunata Optuna H 775 User manual

Brunata Optuna H
Ultrasonic energy meter
Type 775
Installation Guide
Edition 1.2
UK-QB101575 / 29.05.2012
Brunata a/s is a Danish owned company. We
have more than 90 years of experience within
developing and producing meters, heat cost
allocators, consumption accounts, meter
services and substations. Today meters are
often remotely read with access to the internet.
We have a quality control system fulfilling
DS/EN ISO 9001 and 14001.

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Table of contents:
1.0 INTRODUCTION............................................................................................................................................................. 3
1.1 GENERAL ..................................................................................................................................................................... 3
1.2 INSTALLATION OF ENERGY METER ..................................................................................................................................... 3
2.0 INSTALLATION OF TEMPERATURE SENSORS................................................................................................................. 6
3.0 POWER SUPPLY ............................................................................................................................................................. 7
3.1 BATTERY...................................................................................................................................................................... 7
3.2 MAINS UNIT................................................................................................................................................................. 7
4.0 EXTENSION MODULES .................................................................................................................................................. 7
4.1 INSTALLATION OF MODULES ............................................................................................................................................ 8
4.2 COMMUNICATION MODULES ........................................................................................................................................... 8
4.2.1 M-Bus ............................................................................................................................................................... 8
4.2.2 Communication over radio ............................................................................................................................... 9
4.2.3 RS-232 Communication module ....................................................................................................................... 9
4.2.4 RS-485 Communication module ....................................................................................................................... 9
4.3 PULSE INPUT FUNCTION MODULE ................................................................................................................................... 10
4.4 PULSE OUTPUT FUNCTION MODULE................................................................................................................................. 11
4.5 COMBINED FUNCTION MODULE...................................................................................................................................... 12
4.6 ANALOGUE OUTPUT FUNCTION MODULE.......................................................................................................................... 12
4.7 TEST OUTPUT ............................................................................................................................................................. 12
5.0 DISPLAY ....................................................................................................................................................................... 13
5.1 EXPLANATION OF SYMBOLS ........................................................................................................................................... 13
6.0 SIMPLE OPERATION .................................................................................................................................................... 14
6.1 OPERATION INSTRUCTIONS............................................................................................................................................ 14
7.0 ERROR CODES ............................................................................................................................................................. 15
8.0 DECLARATION OF CONFORMITY FOR DEVICES AFTER MID ........................................................................................ 16

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Brunata a/s · Vesterlundvej 14 · 2730 Herlev · tlf. [phone] · fax [phone] · brunat[email protected] · www.brunata.dk
1.0 Introduction
1.1 General
This installation guide is intended for trained personnel and does not contain any basic working steps.
Important!
The seal on the energy meter must not be damaged! A damaged seal will result in immediate invalidation of the
factory warranty and verification. The cables supplied with the meter must not be shortened or changed in any other
way.
Notes!
The regulations on the use of energy meters must be observed!
The meter installation is only to be performed by an installation and/or electrical contractor using personnel trained in
the installation and use of electrical equipment and familiar with the Low Voltage Directive.
Medium: Water without additives.
The specified medium temperature is 5...130 °C (150 °C).
The temperature range depends on variant and nominal size.
The encapsulated variant is to be used if condensation is expected.
The specified operating/ambient conditions are 5 … 55 °C; IP54; 93 % rel. humidity.
Further details about the variants can be obtained from the comprehensive Installation and User Guide. Compliance
with this guide is essential.
1.2 Installation of energy meter
The energy meter should be installed, as indicated in loop 3 in the display, either in the hot or cold line of the system
depending on the design and application (heat, air conditioning or cooling meter).
The meter may only be installed in dry and frost-free areas in buildings.
The flow sensor must be installed so that the direction of flow corresponds to the direction of the arrow on the
sensor.
Ensure that the flow sensor is always filled with liquid during installation.
Calming sections before and after the flow sensor is not necessary.
The meter can be installed in both horizontal and vertical pipe sections, provided air bubbles cannot collect in the
meter. We recommend installing the flow sensor in a tilted position.

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Make sure the meter is installed sufficiently far away from possible sources of electromagnetic interference (switches,
electric motors, fluorescent lamps, etc.).
For medium temperatures of 90 °C or more or if Twater < Tambient (application as cooling meter or heat/cooling meter),
the integrator must be removed from the meter and installed a sufficient distance away from heat sources.
A wall holder (supplied with meter) or a spacer holder (optional) is available for this purpose.
It is recommended that stop valves be fitted before and after the energy meter to simplify removing the meter.
The meter should be installed in a conveniently accessible position for service and operating personnel.
Initial operation is to be carried out and recorded after installation.

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T: 5 … 90°C / Twater > Tambient T: 90 … 130°C/150°C / Twater < Tambient
Spacer holder Wall mounting

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2.0 Installation of temperature sensors
Handle the temperature sensors carefully! The sensor cables are fitted with coloured type labels:
Red: sensor in hot line, blue: sensor in cold line.
The programmed installation location is shown in the information loop.
The free temperature sensor can be installed in a ball valve or in a pocket conforming to the requirements for this
type of sensor. If the sensor is installed in a pocket, it must be inserted as far as the bottom of the pocket and secured.
For installation in a ball valve, a 5-piece coupling set is enclosed in a separate bag. Make sure the sensor is mounted
symmetrically. The connecting cables must not be shortened or extended. The maximum cable length is ten meters.
The sensors should preferably be installed directly immersed. Insert one O-ring in the sensor hole using the mounting
pin supplied. Only tighten the brass or plastic screw by hand (2-3 Nm); tighten the plug screw with a torque of approx.
12 Nm.
1 2 3 4 5.1 5.2 6
Meter type
Sensor marking
Terminal
Installation position
Energy meter in return line
Red
5 Hot 6
Forward
Blue
7 Cold 8
On meter
Energy meter in forward line
Red
5 Hot 6
On meter
Blue
7 Cold 8
Return
Cooling meter in return line
Blue
7 Cold 8
Forward
Red
5 Hot 6
On meter
Cooling meter in forward line
Blue
7 Cold 8
On meter
Red
5 Hot 6
Return
Air conditioning meter in return line
Red
5 Hot 6
Forward
Blue
7 Cold 8
On meter
Air conditioning meter in forward line
Red
5 Hot 6
On meter
Blue
7 Cold 8
Return

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3.0 Power supply
3.1 Battery
A 3.6 V DC lithium battery is fitted in the standard version. The battery is not to be charged or short-circuited. Ambient
temperatures below 40 °C extend the life of the battery. Used batteries must be disposed of at suitable waste
collection points! Caution: Risk of explosion if battery is replaced by an incorrect type.
3.2 Mains unit
24 V AC or 230 V AC mains units (Protection Class 1) can be changed or retrofitted at any time. The protective safety
cover must be installed at all times. Never connect between two phases, as this would destroy the mains unit. The
cable is to be fused at max. 6 A and protected against manipulation.
The mains unit notifies the meter if mains voltage is present. If the mains fail, the backup battery (CR2032) in the
mains unit provides the power supply for up to one year. The LCD readings (on pressing button) and the date and time
are still updated, but none of the measuring functions work, incl. the flow rate measurement. Communication still
functions over the optional M-Bus, RS485 and RS232 modules or the optical interface, but reduces the life of the
backup battery. The radio function is switched off in the event of mains failure.
4.0 Extension modules
The energy meter has two slots for extension modules.
Slot 1
Slot 2
- Pulse In (2x)
- Pulse In (2x)/Out (1x)
- RS232
- M-Bus
- RS485
- L-BUS (for ext. radio)
- Analogue Out (2x)
- Pulse In (2x)
- Pulse Out (2x)
- Pulse In (2x)/Out (1x)
- RS232
- M-Bus
- RS485
- L-BUS (for ext. radio)
The modules can be used and combined as shown in the above table. Use of combinations not
included in the above table is not allowed. With radio meters the slot 2 of the communication
modules has to be left empty. These modules have no effect on consumption recording and can be
fitted retrospectively without damaging the verification mark. The relevant ESD regulations
(electrostatic discharge) must be observed. No liability is accepted for damage (especially to electronic circuits)
resulting from failure to comply with the ESD regulations.

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4.1 Installation of modules
1. Open the integrator by releasing the side catches.
2. Engage the module in the relevant slot and carefully connect the pre-formed ribbon cable at both ends.
3. Close the lid and check the meter for correct operation by pressing the push button. Renew the seal of the
housing lid if the meter functions correctly.
4.2 Communication modules
The meter supports two communication channels over the same or different interfaces. An additional communication
module can be used in radio operation. The protocol is different for each of the two channels and is preset ex works,
but can be set to customer-specific requirements using the IZAR@Set software. Each channel has its own primary
address, but only one secondary address exists, which is set to the serial number ex works.
4.2.1 M-Bus
The M-Bus communication module is a serial interface for communication with external devices (M-Bus control
centre), e.g. IZAR@CENTER. A number of meters can be connected to a control centre. The module contains a 2-pole
terminal strip with terminals marked 24, 25.
The connection is not polarity-conscious and is electrically isolated
M-Bus protocol to EN 1434-3 standard
300 or 2400 bauds (auto baud detect)
Connection for 2 x 2.5 mm² wires
Current drawn: one M-Bus load
Test output
Slot 1
Slot 2
Attention!
Keep free at radio
version

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4.2.2 Communication over radio
The integrated radio module is an interface for communication with Hydrometer radio receivers. Unidirectional
communication has the following specification:
The module sends every 6 ... 25 s (variable, depending on protocol length)
The radio module always accesses the current meter registers
Transmission frequency: 868 MHz
Various Hydrometer receivers are available for receiving the protocol (e.g. Bluetooth, GPRS, LAN, …)
The protocol corresponds to the Open Metering or HYD standard and is encrypted
Reading modes: Brunata DriveBy, Brunata LiveNetwork
4.2.3 RS-232 Communication module
The RS232 communication module is a serial interface for communication with external devices, e.g. PC; 300 or 2400
bauds.
The module contains a 3-pole terminal strip with terminals marked 62(Dat), 63(Req) and 64(GND). A special adapter
cable is required for connection (order no. 087H0121). The coloured wires are to be connected as shown.
4.2.4 RS-485 Communication module
The RS485 communication module is a serial interface for communication with external devices, e.g. PC; 2400 bauds
only. The module contains a 4-pole terminal strip with terminals marked D+, D- and +12-. The module needs an
external power supply of 12 V DC ±5 V.
62 = brown
63 = white
64 = green

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4.3 Pulse input function module
Module for two additional pulse counters. Pulse input 1 is marked as "I1” and ”┴" and input 2 as "I2” and ”┴".
Pulse inputs are programmable (IZAR@SET) for a value of: 1, 2.5, 10, 25, 100, 250, 1000, 2500 litres per pulse
Possible units are all the energy units available in the meter, the volume unit m³ or no unit
Input frequency is in the range < 8 Hz; min. pulse duration 10 ms
Input resistance 2.2 MΩ; terminal voltage 3 V DC
Data is accumulated separately in registers
Data is readable as IN1 and IN2 in the display and can be transmitted over the communication modules
Cable length up to ten meters