Fronius Ohmpilot Operating Instructions Manual
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Fronius Ohmpilot Operating Instructions Manual

Fronius Ohmpilot Operating Instructions Manual

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Operating
Instructions
Fronius Ohmpilot
EN
Operating Instructions
42,0426,0538,EN
009-29052024

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Summary of Contents for Fronius Ohmpilot

  • Page 1 Operating Instructions Fronius Ohmpilot Operating Instructions 42,0426,0538,EN 009-29052024...

  • Page 3: Table Of Contents

    Choosing location - general remarks Choice of location Installation position Wall mounting Safety Selecting wall plugs and screws Mounting the Ohmpilot on the wall Installation Stripping lengths Electrical connection 1-phase heating element up to 3 kW Application example 1 3-phase heating element 900 W up to 9 kW...
  • Page 4 Pairing the inverter to the Ohmpilot Establishing a connection via Modbus RTU Establishing a connection via LAN Establishing a connection via WLAN Boost Mode Boost Mode Settings in the menu area User interface Status display Optional settings Manual settings for HEATER 1...

  • Page 5: Safety Rules

    Safety rules Explanation of DANGER! safety notices Indicates immediate danger. ▶ If not avoided, death or serious injury will result. WARNING! Indicates a potentially hazardous situation. ▶ If not avoided, death or serious injury may result. CAUTION! Indicates a situation where damage or injury could occur. ▶...

  • Page 6: Environmental Conditions

    For the location of the safety and danger notices on the device, refer to the chapter headed "Warning notices on the device" in the Operating Instructions for your device. Faults that could compromise safety must be remedied before switching on the device.

  • Page 7: General Information

    General information...

  • Page 9: General

    1. If more power is available, the Ohmpilot switches to phase 2. Phase 1 can therefore be continuously adjusted between 3 and 6 kW. If the avail- able power is > 6 kW, the Ohmpilot adds phase 3. Phase 1 is again continuously adjusted between 6 and 9 kW...

  • Page 10: System Design

    ▶ Connect only purely resistive loads. NOTE! Phase control The sum of all phases forms the basis for Ohmpilot control. The Ohmpilot is not suitable for phase-accurate billing. NOTE! Ohmpilot and Fronius Datamanager 2.0 / Fronius Hybridmanager Only one Ohmpilot can be connected per Fronius Datamanager 2.0 / Fronius Hy- bridmanager.

  • Page 11: Warning Notices On The Device

    Warning notices Safety symbols and warnings are located on the left-hand side of the Ohmpilot. on the device These warning notices and safety symbols must not be removed or painted over. They warn against incorrect operation, as this may result in serious injury and damage.

  • Page 12: Control Elements And Connections

    2 and 3. This may result in electricity being sourced from the grid. Press again Ohmpilot is returned to the standard operating mode; boost mode, access point or WPS are deactivated. Press for 7 Ohmpilot restarts...

  • Page 13: Connection Area

    Flashing red Temperature measurement faulty (twice) Flashing red Heating element faulty (three times) Flashing red Ohmpilot faulty (four times) Flashing red Minimum temperature not reached (five times) A detailed description of the error is provided in Fronius Solar.web. Connection area...
  • Page 14 Modbus RTU (default address 40) Spring balancer 0.2 - 1.5 mm , cable length max. 1000 m, shielded and twisted Temperature sensor terminal Cable sensor PT 1000, spring balancer 0.2 - 1.5 mm Input - grid supply 1x 230 V or 3x 230 V, spring balancer 1.5 - 2.5 mm Output - L3 heating element Spring balancer 1.5 - 2.5 mm (10)

  • Page 15: Selection Of Heater

    Neutral conductor must be connected Temperature limitation A mechanical temperature switch sim- plifies commissioning and use. If no mechanical temperature switch is available, a temperature sensor can also be connected to the Ohmpilot. This limits the maximum temperature limitation" (see chapter "Temperature on page).

  • Page 17: Installation And Commissioning

    Installation and commissioning...

  • Page 19: Choice Of Location And Installation Position

    NOTE! Cable length The maximum cable length from the output of the Ohmpilot to the load (heating element) must not exceed 5 m. Choice of loca- The Ohmpilot is suitable for indoor installation. The housing...

  • Page 20: Installation Position

    Do not install the Ohmpilot in rooms or environments where there is a lot of dust. All Ohmpilot units are designed to be dust-tight. However, in areas with a heavy build-up of dust, the thermal efficiency may still be impaired by dust forming on the cooling surfaces.

  • Page 21: Wall Mounting

    The underlying sur- face must be load-bearing. To install the Ohmpilot in masonry, Fronius recommends the use of steel screws with a diameter of 4 - 6 mm. Mounting the...
  • Page 22 Mark drill holes, drill and insert wall plugs Attach the Ohmpilot to the wall with 4 screws...

  • Page 23: Installation

    NOTE! Overvoltage from the grid Overvoltage can damage the device ▶ Equip the Ohmpilot with a type B16 A automatic circuit breaker and a resid- ual current circuit breaker. NOTE! Cable length The maximum cable length from the output of the Ohmpilot to the load (heating element) must not exceed 5 metres due to electromagnetic compatibility.

  • Page 24: 1-Phase Heating Element Up To 3 Kw

    This may result in electricity being sourced from the grid. The maximum temperature must be set on the heating element thermostat. If the heating element does not have a thermostat, the Ohmpilot can also carry out Optional settings this task as an alternative (see "Optional settings" section...

  • Page 25: 3-Phase Heating Element 900 W Up To 9 Kw

    This may result in electricity being sourced from the grid. The maximum temperature must be set on the heating element thermostat. If the heating element does not have a thermostat, the Ohmpilot can also carry out Optional settings this task as an alternative (see "Optional settings" section page 45).

  • Page 26: 1-Phase Heating Element Up To 3 Kw With Heat Pump Control

    The Fronius Smart Meter records the current power at the feed-in point and transfers the data to the inverter. By controlling the Ohmpilot, the inverter ad- justs any surplus energy that is available to zero. Specifically, this takes place by continuously adjusting the heating element connected to the Ohmpilot and by targeted switching on of the heat pump.

  • Page 27: Settings In The Menu Area

    The maximum temperature must be set on the heating element thermostat and on the heat pump. If the heating element does not have a thermostat, the Ohmpilot can also carry out this task as an alternative (see "Optional settings" section Optional settings on page 45).
  • Page 28 Open the Ohmpilot user interface (see section Establishing the data connec- tion). Under HEATER 2, select "SG Ready heat pump" for Consumer. Starting threshold Select "Feed-in" under and enter the desired output in watts at which the heat pump is to be switched on.

  • Page 29: 1-Phase Heating Element Up To 3 Kw And External Source

    The Fronius Smart Meter records the current power at the feed-in point and transfers the data to the inverter. By controlling the Ohmpilot, the inverter ad- justs any surplus energy that is available to zero. Specifically, this takes place by continuously adjusting the heating element connected to the Ohmpilot.

  • Page 30: Settings In The Menu Area

    The maximum temperature must be set on the heating element thermostat. If the heating element does not have a thermostat, the Ohmpilot can also carry out this task as an alternative (see "Optional settings" section Optional settings page 45).

  • Page 31: Two Heating Elements - 3-Phase And 1-Phase

    If no temperature sensor is connected to the Ohmpilot, after 30 minutes the Ohmpilot attempts to output energy via the first heating element once again. If a temperature sensor is present, the system switches back to the first heating ele- ment from a temperature difference of 8 °C (to the temperature measured be-...

  • Page 32: Application Example

    The maximum temperature must be set on the heating element thermostat. If heating element 1 (5) does not have a thermostat, the Ohmpilot can also carry out this task as an alternative Optional settings on page 45).

  • Page 33: Two 3-Phase Heating Elements Up To 9 Kw

    If no temperature sensor is connected to the Ohmpilot, after 30 minutes the Ohmpilot attempts to output energy via the first heating element once again. If a temperature sensor is present, the system switches back to the first heating ele-...

  • Page 34: Settings In The Menu Area

    The maximum temperature must be set on the heating element thermostat. If heating element 1 (5) does not have a thermostat, the Ohmpilot can also carry out this task as an alternative (see chapter Optional settings on page 45).

  • Page 35: 1-Phase Heating Element Up To 3 Kw / 3-Phase Heating Element And Circulation Pump

    1-phase heating element up to 3 KW / 3-phase heating element and circulation pump Application ex- ample 7 (10) L1 L2 L3 N L3 N L2 N NC W OUT N max. 16A External earth (PE) Ferrite rings (included in scope of delivery) Temperature sensor PT1000 Hot water boiler Heating element...

  • Page 36: Settings In The Menu Area

    This is pos- sible with all circulating pumps that have an auxiliary relay. The designation of the floating contact on the Ohmpilot is NC W NO. When the contact is activated, the switching rocker (W) switches from the "normally open"...
  • Page 37 "Circulating pump" IMPORTANT! If the "Circulating pump" option is selected, no other heater can be controlled by the Ohmpilot. The HEATER 1 output controls the heating element which, in com- bination with the circulating pump, heats a hot water tank.

  • Page 38: Establishing The Data Connection

    If there are several inverters with Fronius Smart Meter in the network, the Ohmpilot Ohmpilot must be paired manually on the user interface of the inverter to be paired under "Device Configuration". Information on how to access the user interface of the inverter can be found in...

  • Page 39: Establishing A Connection Via Modbus Rtu

    Mark cables (e.g. by labelling) NOTE! Defective cabling is signalled by the red LED indicator flashing once. Connect the data communication cable in parallel to the Ohmpilot and sys- tem components. Activate the terminating resistor on the first and last device of the Modbus cable.

  • Page 40: Establishing A Connection Via Lan

    5 minutes. If the red LED is not lit and the green LED is flashing, the Ohmpilot is working correctly. A static IP address can be assigned to the Ohmpilot via the user interface. Set Up Network, symbolic representation In the web browser, open the address http://ohmpilotL.local.
  • Page 41 Press the WPS button on the router within 2 minutes. If the blue LED on the Ohmpilot lights up permanently, the connection to the network was successful. The inverter automatically searches for the Ohmpilot, and the search process can take up to 5 minutes. If the red LED is not lit and the green LED is flash- ing, the Ohmpilot is working correctly.
  • Page 42 A static IP address can be assigned to the Ohmpilot via the user interface. The Ohmpilot can then be reached at http://ohmpilotW.local or at the fixed IP address assigned. Alternatively, the Ohmpilot can also be searched on the net- work using the Fronius Solar.web App.

  • Page 43: Boost Mode

    Indications/controls on the device ) or via the user interface. Settings in the menu area Boost Mode, symbolic representation Open the Ohmpilot user interface (see section Establishing the data connec- tion). Click on the Boost Mode button to activate the function.

  • Page 44: User Interface

    Legionella prevention program is active. Heater 1 heats tion up to 100%. Boost The Ohmpilot was manually set to Boost Mode. Heater 1 heats up to 100%. Error An error has been detected. Further information is dis- played in Fronius Solar.web.

  • Page 45: Optional Settings

    In the case of applications with a 1-phase and a 3-phase heating element, it is not possible for the Ohmpilot to measure heating element 1 automatically due to the cabling. In this case, the configuration must be carried out manually.

  • Page 46: Activating Legionella Prevention

    Ohmpilot should start to heat to the new minimum temperature. Under "Time to" enter the time until which the Ohmpilot should heat to the minimum temperature. Under "Minimum temperature", select the desired end temperature.

  • Page 47: Temperature Limitation

    If heater 1 is the primary heat source, the day curve must be adapted to guaran- tee the desired minimum temperature. A PT1000 temperature sensor is required for this function and can be sourced from Fronius under item number 43,0001,1188. The temperature sensor must be installed above the heating ele- ment / external source to ensure a continuous supply of hot water.

  • Page 49: Appendix

    Appendix...

  • Page 51: Status Codes

    Status Codes Status codes Sending errors Errors are saved in Fronius Datamanager 2.0 and can be sent via Fronius Sol- ar.web. Possible error outputs: Status codes HE = Heating element TS = Temperature sensor I = Inverter ES = External source (e.g.
  • Page 52 HE/TS. hours ES could not ES switched off/faulty. ES Switch on ES. achieve minimum not connected to Ohmpilot. Connect ES to re- temperature with- TS incorrectly mounted. lay 1. Fit TS above in 5 hours. Heating system not dimen-...
  • Page 53 IP address if it does not re- established. ceive an IP address after 40 seconds: 169.254.0.180 (only valid if the Ohmpilot is con- nected to the router via WLAN).

  • Page 54: Technical Data

    Technical data Fronius Ohmpi- General data lot technical Dimensions (height x width x depth) 350 mm x 280 mm x 110 mm data Weight 3.9 kg Protection class IP 54 Installation Wall Ambient temperature range 0 to 40 °C Permissible humidity...

  • Page 55: Tests/Specifications

    Tests/specifications Tests/specifica- Tests/specifications per EN60730 Section 1 Table 7.2 tions Construction Electronic RS 2.5.5, independently mounted RS Screwless terminals 2.10.6.1 type X mounting Classification of the RS according Safety class I 6.8.3 to protection against electric shock, Section 6.8 Type of shutdown or open circuit Micro-interruption per 2.4.4.

  • Page 56: Warranty Terms And Conditions, And Disposal

    Warranty terms and conditions, and disposal Fronius manu- Detailed, country-specific warranty conditions are available on the internet facturer's war- www.fronius.com/solar/garantie ranty Disposal Waste electrical and electronic equipment must be collected separately and re- cycled in an environmentally responsible manner in accordance with the EU Dir- ective and national law.

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