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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-US
Operating instructions
42,0426,0538,EA
011-14102024

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Summary of Contents for Fronius Ohmpilot

  • Page 1 Operating Instructions Fronius Ohmpilot EN-US Operating instructions 42,0426,0538,EA 011-14102024...

  • Page 3: Table Of Contents

    Choosing location - general remarks Choosing a location Installation position Wall mounting Safety Selecting dowels 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 with the Ohmpilot Establishing a connection via Modbus RTU Establishing a connection via LAN Establishing a connection via WLAN Boost Mode Boost mode Settings in menu area User interface Status display Optional settings HEATER 1 manual settings...

  • Page 5: General Information

    General information...

  • Page 7: Safety

    Safety Explanation of DANGER! Safety Instruc- tions Indicates an immediate danger. ▶ Death or serious injury may result if appropriate precautions are not taken. WARNING! Indicates a possibly dangerous situation. ▶ Death or serious injury may result if appropriate precautions are not taken. CAUTION! Indicates a situation where damage or injury could occur.

  • Page 8: Emc Measures

    For the location of the safety and danger notices on the device, refer to the chapter headed "Information on the device" in the operating instructions for your device. Any equipment malfunctions which impair safety must be remedied before the device is turned on. EMC measures In certain cases, even though a device complies with the standard limit values for emissions, it may affect the application area for which it was designed (e.g., when...

  • Page 9: General

    Intended use The Fronius Ohmpilot is an addition to the Fronius product portfolio in the field of energy management. The device controls the heating of hot water using sur- plus energy from a photovoltaic system. Any other use is considered improper.

  • Page 10: System Components Required

    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 11: Information On The Device

    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 12 IP 54 1x16A/3x16A Analog Out Relay Leistungssteller / Power Controller / Régulateurs de puissance WARNUNG! Ohmpilot darf nur über B16A Überstromschutzeinrichtung angeschlossen werden. WARNUNG! Ein elektrischer Schlag kann tödlich sein. Vor dem Öffnen des Geräts dafür sorgen, dass Ein- und Ausgangsseite spannungsfrei sind.

  • Page 13: Operating Controls 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 14: 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 15 Modbus RTU (default address 40) Spring balancer 0.2-1.5 mm , cable length max. 300 m, shielded and twis- Temperature sensor terminal Cable sensor PT1000, 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 16: 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 Startup

    Installation and Startup...

  • Page 19: Choosing A 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. Choosing a 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 installer is responsible for selecting the proper mounting materials. The system must be set up on a level, stable surface. Fronius recommends using steel screws with a diameter of 4 - 6 mm for mount- ing the Ohmpilot in masonry.
  • 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 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...
  • Page 24 NOTE! Load connection ▶ Only purely ohmic loads may be connected. ▶ When connecting a heating element, check the grounding of the boiler/ buffer and the heating system. ▶ Observe the maximum permissible inlet water and hot water temperature when setting the temperature on the heating element.

  • Page 25: 1-Phase Heating Element Up To 3 Kw

    This can result in electricity being drawn 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 this task as an alternative (see chapter Optional settings on page 46).

  • Page 26: 3-Phase Heating Element 900 W Up To 9 Kw

    This can result in electricity being drawn 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 this task as an alternative (see chapter Optional settings on page 46).

  • Page 27: Application Example

    (10) Residual current circuit breaker The Fronius Smart Meter records the current power at the feed-in point and transmits the data to the inverter. The inverter adjusts the available surplus en- ergy to zero by activating the Ohmpilot (specifically by continuously controlling the heating element connected to the Ohmpilot and through targeted activation of the heat pump).

  • Page 28: Settings In Menu Area

    The maximum temperature must be set on the heating ele- ment 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 on page 46).
  • Page 29 Open the user interface of the Ohmpilot (see chapter Establishing the data connection). Select SG Ready heat pump under Heater 2 > Consumer. Starting threshold > Feed-in, select and enter the desired power in Under watts at which the heat pump should be switched on.

  • Page 30: 1-Phase Heating Element Up To 3 Kw And External Source

    (10) Residual current circuit breaker The Fronius Smart Meter records the current power at the feed-in point and transmits the data to the inverter. The inverter adjusts the available surplus en- ergy to zero by activating the Ohmpilot (specifically by continuously controlling the heating element connected to the Ohmpilot).

  • Page 31: Settings In 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 chapter Optional settings on page 46).

  • Page 32: 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 first heating element is activated again as...

  • Page 33: Application Example

    (e.g., gas boiler) must ensure the minimum tem- perature. As an alternative, the Ohmpilot can also ensure the minimum temperature. This can result in electricity being drawn from the grid. The maximum temperature must be set on the heating element thermostat. If heating element 1 (5) does not...

  • Page 34: 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 first heating element is activated again as...

  • Page 35: Settings In 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 alternatively take over this task (see chapter Optional settings on page 46).

  • Page 36: 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) IMPORTANT! A neutral conductor must be connected to each heating element. Ferrite rings (included in the scope of supply) Temperature sensor PT1000 Hot water boiler...

  • Page 37: Settings In 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 38 Heater IMPORTANT! If the circulating pump option is selected, no other heater can be controlled by the Ohmpilot. The output Heater 1 controls the heating element, which, in com- bination with the circulating pump, heats a hot water tank.

  • Page 39: Establishing The Data Connection

    Each inverter with a Fronius Smart Meter automatically pairs with the Ohmpilot. verter with the If there are several inverters with a Fronius Smart Meter in the network, the Ohmpilot Ohmpilot must be manually paired under System Information on the user inter- face of the inverter to be connected.

  • Page 40: Establishing A Connection Via Lan

    Mark cables (e.g., by labeling) NOTE! Defective cabling is signaled 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 41: Establishing A Connection Via Wlan

    Alternatively, search for the Ohmpilot in the network using the Fronius Sol- ar.start app. NOTE! Access the Ohmpilot via the network. In networks with a DNS suffix, the Ohmpilot can be reached at http://ohmpi- lotL.<DNS suffix>, e.g., http://ohmpilotL.fronius.com Static In order to set the IP address manually, the option must be selected.
  • Page 42 The inverter will automatically search for the Ohmpilot, which may take up to 5 minutes. If the red LED is unlit and the green LED is flashing, the Ohmpilot is working correctly. The user interface can be used to set a static IP address for the Ohmpilot.
  • Page 43 NOTE! DNS networks In networks with a DNS suffix, the Ohmpilot is available at http:// ohmpi- lotW.<DNS suffix>, e.g., http://ohmpilotW.fronius.com...

  • Page 44: Boost Mode

    Ohmpilot (see Indications/controls on the device) or via the user interface. Settings in menu area Boost mode, symbolic representation Open the user interface of the Ohmpilot (see chapter Establishing the data connection). Click Boost Mode to activate the function.

  • Page 45: 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 46: 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 47: 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, enter the desired end temperature.

  • Page 48: Temperature Limitation

    If a second heating element is being used as Heater 2, it must have a thermostat. A PT1000 temperature sensor is required for this function, which can be ob- tained from Fronius under item number 43,0001,1188. The position of the tem- perature sensor should be just above the heating element, so that the incoming cold water is immediately heated again and thus the maximum amount of storage is used.

  • Page 49: Appendix

    Appendix...

  • Page 51: Status Codes

    Status codes Status codes Error transmission Errors are stored in Fronius Datamanager 2.0 and can be sent via Fronius Solar.web. Possible error outputs: Status codes HS = Heating element TS= Temperature sensor WR = Inverter FQ = External source (e.g., gas boiler)
  • Page 52 No connection to No connection between WR Check connec- the inverter and Ohmpilot. WR switched tions. Switch on off. The Ohmpilot also needs WR. Update soft- a connection to the WR at ware. Switch the night. Router switched off/ Ohmpilot and WR defective/reconfigured.
  • Page 53 WLAN no longer works IP address after 40 s, the connection is re- Ohmpilot automatically as- established. signs the following fixed IP address: 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: Terms And Conditions Of Warranty And Disposal

    Terms and conditions of warranty 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 sound manner in accordance with the European Dir- ective and national law.