Configuration Parameters

The module offers extensive customization capabilities to suit individual user needs, system characteristics, and expected outcomes.

After successful installation, the module adopts a default configuration that ensures basic and safe operation. However, the user can modify individual parameters at any time.

The following sections provide a detailed overview of each parameter, including basic information, its impact on system operation, and tips and recommendations.

How to Read Parameter Descriptions

This section outlines the properties included in the initial parameter descriptions.

Property	Description
Parameter Type	Specifies the parameter type: Boolean: accepts true or false values. String: accepts any character sequence following the specified syntax for that parameter. Integer: accepts a numerical value.
Default Value	Specifies the value adopted by the parameter if no value is explicitly provided.
Editable	Specifies whether the parameter can be edited: true indicates that the parameter can be modified by the user, while false indicates that the value is managed exclusively by the system.
Value Range	Specifies the range of allowed values for the parameter, presented as a minimum and maximum value or a list of values. This property does not apply to all parameters.

How to Change Parameter Values in the Fibaro Interface?

Parameters are modified through the standard user interface of the Fibaro gateway (Home Center 3 / Yubii Home) in the section dedicated to device variables. To make changes, follow these steps:

1. Log in to the Fibaro admin panel.
2. Go to the Devices tab in the side menu.
3. Find and open the device from the list.
4. Go to the Variables tab at the top of the device view.
5. Find the variable corresponding to the parameter you wish to change.
6. Enter the new value in the text field next to the variable.
7. Save your changes by clicking the Save button.

TIP

Before applying changes, ensure that the entered values comply with the allowable range for the given parameter. Incorrect values may affect the proper operation of the module.

LANGUAGE

The LANGUAGE parameter defines the interface language and messages generated by the module.

Property	Description
Parameter Type	String
Default Value	AUTO
Editable	true
Value Range	AR, CS, DA, DE, EN, ES, ET, FI, FR, HU, IT, JA, KA, LT, NL, NO, PL, PT, RO, RU, SL, SV, TR, ZH, AUTO

TIP

Setting the value to AUTO forces reading the language from the FIBARO interface and sets it as current, provided it is supported.

SYS_MODE

The SYS_MODE parameter specifies the current operating mode of the device.

Property	Description
Parameter Type	String
Default Value	AUTO
Editable	false

NOTIFICATION

The NOTIFICATION parameter specifies whether the system sends PUSH notifications to the user.

Property	Description
Parameter Type	String
Default Value	true
Editable	true

CLASS

The CLASS parameter defines which class the EMS Prime Switch belongs to.

Property	Description
Parameter Type	String
Default Value	icas.ems.primeSwitch
Editable	false

PRIORITY

The PRIORITY parameter defines the numerical priority assigned to the controlled device.

Property	Description
Parameter Type	Integer
Default Value	1
Editable	true
Value Range	1 - 999

ENERGY_TRACKER

The ENERGY_TRACKER parameter stores self-consumption statistics values.

Property	Description
Parameter Type	String
Editable	false

SWITCH_ID

The SWITCH_ID parameter specifies the identifier of the device to be launched when surplus energy is detected.

Property	Description
Parameter Type	Integer
Default Value	0 (no assigned device)
Editable	true
Value Range	Greater than 0

SWITCH_PWR

The SWITCH_PWR parameter specifies the device’s power consumption (in watts) during normal operation.

Property	Description
Parameter Type	Integer
Default Value	AUTO
Editable	true
Value Range	Greater than 0 or AUTO

TIP

Setting the value to AUTO will force an automatic reading of the required power from the device. If the reading is not possible, the system will return an error and ask you to specify this power manually.

SWITCH_PWR_THLD

The SWITCH_PWR_THLD parameter specifies the device’s power threshold percentage that must be covered by solar surplus power for the device to turn on. The default value of 100% means the device will only start when surplus energy fully covers the power defined in the SWITCH_PWR parameter.

Property	Description
Parameter Type	Integer
Default Value	100
Editable	true
Value Range	Greater than 0

TIP

For smaller installations with low surplus power, it is worth lowering this parameter to e.g. 50%. The device will then switch on when PV covers at least half of the required power—the rest will be drawn from the grid, allowing you to maximize available solar energy.

If you have a large system and multiple devices competing for power, it is better to leave the value at 100% or higher.

MIN_IDLE_TIME

The MIN_IDLE_TIME parameter specifies the minimum duration (in seconds) that surplus power must remain at a positive level for the device to be activated. This prevents accidental triggering caused by short spikes in surplus energy.

Property	Description
Parameter Type	Integer
Default Value	300
Editable	true
Value Range	Greater than 30

MIN_RUN_TIME

The MIN_RUN_TIME parameter specifies the minimum operating time (in seconds) of the device once turned on, regardless of surplus availability. This prevents excessive device cycling, protecting its components from wear and failure.

Property	Description
Parameter Type	Integer
Default Value	1200
Editable	true
Value Range	Greater than 30

IMPORTANT

Adjust this parameter value with great care to avoid damaging equipment components. Below is a list of common appliances alongside suggested minimum runtimes:

• Boiler / Electric Water Heater: 30–60 minutes (1800–3600 s). Water needs time to noticeably increase in temperature. Short cycles of 2–3 minutes only wear down relay contacts without producing real heating effects.
• Heat Pump (DHW / Space Heating): 30–45 minutes (1800–2700 s). Highly critical! Compressors in heat pumps and air conditioners tolerate short cycling very poorly. Frequent restarts drastically shorten device lifespan.
• Air Conditioning (Cooling/Heating): 20–30 minutes (1200–1800 s). Similar to heat pumps—refrigerant pressure and flow need several minutes to stabilize after compressor activation.
• Pool Pump / Filtration: 30–60 minutes (1800–3600 s). Pool water circulation is effective only over longer operational spans. Additionally, induction pump motors consume the most current during startup.
• EV Charger (Electric Vehicle): 15–30 minutes (900–1800 s). EV battery packs and internal charge controllers (BMS) require up to several seconds to negotiate charging current. Constant interruption and resumption can cause vehicle computer errors.
• Dishwasher / Washing Machine / Dryer: Full cycle duration (e.g., 60–120 min). Unless the appliance features a pause state, cutting power mid-program will trigger errors or reset the cycle entirely.
• Electric Heater / Space Heater: 10–15 minutes (600–900 s). Heaters (especially oil-filled radiators) have high thermal inertia. Short cycles will not heat spaces effectively.
• Dehumidifier / Humidifier: 15–20 minutes (900–1200 s). Allows ambient humidity levels to balance out and avoids rapid cycling of the dehumidifier compressor.
• Garden / Decorative Lighting: 5–10 minutes (300–600 s). Ensures visual consistency (prevents flickering across the garden when clouds temporarily cover the sun).

POWER_ON_RULE

The POWER_ON_RULE parameter defines the custom logic condition that must be met for the device to launch (e.g., temperature below 55°C). The parameter value is a boolean expression following the [ID:property] syntax, evaluated by the system in real time.

Example: [123:value] > 55 and [234:value] < 0

Property	Description
Parameter Type	String
Default Value	TRUE
Editable	true