FAQ's InZennio Z38

Do I have to calibrate the tactile area in the display everytime I download the Application Program onto de InZennio Z38?

The calibration page of the tactile area on the display cannot be ignored; this ensures the proper working of the display when interacting with it.
This calibration page appears when downloading either the complete "Application Program" or "Parameters & Group Addresses" on the InZennio Z38.

What is the maximum range for the InZennio Z38 IR Remote Controller?

Our test results show that in straight line and without obstacles, funcionality is perfect over 13 meters.

Can I send cyclically to the BUS the temperature measured by the internal sensor in the InZennio Z38?

Yes, this option is available by parameter with range among 10 y 1020 sg.

Can we set negative setpoint temperatures in the InZennio Z38?

No, the InZennnio Z38 was thought to control clima in buildings. The allowed temperature range is [0°C – 95°C].

Can I use the temperature shown in the display header to show an external temperature instead?

No this is not possible in the display header, however, a specific box in the Home or Home II pages can be enabled for such purpose.

Can I disable the temperature, time or date in the header of the display?

No, this option is not available in the InZennio Z38.

Can the date & time of the InZennio Z38 be ciclically sent to the BUS?

No, this option is not available in the InZennio Z38.

When are the date and time of the InZennio Z38 sent to the BUS?

The InZennio Z38 Touch Panel only sends the date & time to the BUS when these two options are set, more specifically when the SET keyboard is pressed, at the end of the manual parameterization.
This feature allows synchronizing the date & time of the rest of InZennio Panels in the installation by creating two group addresses “Date” & “Time” to later link them with the appropiate communication objects in the rest of panels to synchronize; this way when adjusting date & time in one of the "master" panels, the rest of them will be also updated.

What kind of thermostat can be used in Clima pages of InZennio Z38?

The Clima specific pages of InZennio Z38 are internally linked to a Home Thermostat. See section Home Thermostat.

Climate  "MODE" Communication object structure in the InZennio Z38 Touch Panel.

The MODE communication objet of InZennio Z38 has the following structure:

0 = Auto
1 = Heat
2 = Dry
3 = Fan
4 = Cool

What is the Special Mode control of InZennio Z38 for?

The Special Mode control is used to set pre-configured setpoints in the thermostat. See section Home Thermostat.

How can I set the special modes setpoint temperatures?

Setpoint temperatures of the Special Modes (Comfort, Standby and Night) can be directly configured from the panel once you download parameters.

Special modes setpoint temperature configuration is accessible from box 6 in the specific Clima page where these are enabled.

Can I send the setpoint temperature values of the Special Modes to the KNX bus?

There are no communication objects in the InZennio Z38 to send those values to the KNX bus; those values are only internally used by the thermostat in the Panel. 

Can I send the Special Mode Status to the KNX bus?

It is not possible to know the Special Mode Status, since the Special Modes are events of setpoint change in Z38. See section Thermostat Home.

The new Technical Building Code will demand the possibility to restric setpoint temperatures in public buildings. Will I be able to do this with the InZennio Z38?

There is no specific parameter in the InZennio Z38 to do this. It will be possible by implementing a logical function to return a fix temperature value to the InZennio Z38 when a specific temperature value is exceeded from the temperature control.

Can I visualize the real temperature of a zone measured with an external probe together with the setpoint temperature and other functions on a specific Clima page?

Not in the specific Clima pages, but it is possible in one box of Home I or Home II pages if it is configured as a Floating Point Indicator (Temperature). The communication object of the external temperature sensor and the Floating point Indicator object of the box in Home I or Home II should be linked to the same group address.

How many AC indoor units can I control with the InZennio Z38?

The Z38 has 4 specific pages that can be set as "Clima Pages", so up to 4 splits can be controlled with the InZennio Z38.

Splits already have a buit-in thermostat, so neither external probe nor an external thermostat will be needed to achieve this control.

Why when playing Scene nº X, the Group Monitor always show a minor number X-1?

This is due to the particular structure of the "Scenes Control" DPT. For further information, consult the Scenes Example Project.

How many Group Addresses do I need to work with Scenes?

One only Group Address will be needed to work with scenes.

Every device involved in the Scene has a specific Communication object "Scenes". It will only be necessary to link this with the "Scenes" Communication Objects in the devices involved in the predefined atmosphere. For further information, consult the Scenes Example Project.

Is it possible to show the current scene in the display?

Scenes are events, not status; while setting a scene, some predefined parameters are set in the devices involved in the same, however these can be later modified by the users.

How can I learn scenes with the display?

Guess a user defines the "Scene Night" (programming the Panel with parameters and group addresses via ETS) to:

• Turn all the lights Off
• Turn Off the Heating and the AC system
• Activate the Alarm System

Once the scene is defined, every time we play it, a predefined atmosphere is generated.

Afterwards, the user wants this configuration instead:

• Turn all the lights Off except one (the one to remain ON, will be a guiding light)
• Turn Off the Heating and the AC system
• Activate the Alarm System

The way to do this is:

1. Run the scene to be modified.

2. Turn the light we want it to be the guiding light On.

3. Just save the new scene into the Panel by keeping a long press (3 seconds) on the original scene "Run" button.

THIS PROCESS REPLACES THE ORIGINAL SCENE BY THE MODIFIED ONE

How can I schedule a Heating System timer using special modes?

1.  Enable  Box 5 in the Specific Clima Page (Special Modes, Comfort, Night and Standby) and set the type Setpoint Temperature changes and Clima Turn On.

2.  3 new Communication objects appear for each special mode activation. When sending "1" to any of these objects, the specific Setpoint Temperature is set while an ON order is also sent to the Heating system.

3. Enable Schedule Programming Specific Page with four boxes: three boxes to send "1" to the corresponding mode and one box to send the scheduled OFF.

As an example, 4 Group Addresses will be necessary to use the 3 special modes with the Schedule Programming: 

• Comfort: with the Comfort object of the Z38 and with the timer object of the corresponding box.
• Standby: with the Standby object of the Z38 and with the timer object of the corresponding box.
• Night: with the Night object of the Z38 and with the timer object of the corresponding box.
• OFF: with the ON/OFF Reception of Z38 and the timer object of the corresponding box.

Which Zennio devices include binary inputs?

You can check which Zennio devices have binary (digital) inputs in the following table

Differences between Push button and Switch/Sensor inputs

A push button connected to an input consists of a device, which allows, or not, the current flow while this is being pushed; in normal conditions, push buttons contacts are always open (NO) or closed (NC). This event is a pulsation and the time it lasts, threshold time. Depending on the “Threshold Time” it can be distinguished two different actions:

• Short press
• Long press

A Switch/Sensor connected to an input, consists of an electrical mechanism which may have its contacts open or closed under normal conditions. These mechanisms don’t recover their normal position automatically as with the push button. A transition of a digital signal from low/high/low is called "Edge".

• Falling edge: Closed contact to Open Contact.
• Rising edge: Open contact to Closed Contact.

What type of contacts can be connected on the binary inputs?

Binary inputs of Zennio devices are voltage free contacts. They can be individually configured and each of them can be connected to a push buttons and/or a switch/sensors.

Can I connect several push buttons in parallel in the same input?

Yes, inputs are voltage free, so there is no problem in connecting several push buttons in parallel.

Why do I have to press twice over an input for the output to react?

It happens when one output is commuted by two or more different inputs and the output status object isn't used to synchronize these inputs. 

What is the maximum length allowed for the wiring of the digital inputs?

The wiring of the digital inputs can be extended up to 30 meters using a cable with a section between 0.15 mm2 and 1 mm2.

What is the Technical Alarm Cyclical Monitoring used for?

This function allows a critical alarm system monitoring (i.e. gas sensor) to check its proper working in the installation.

In this case, the function waits for a value reception to confirm that the system is working properly. If this value is not received within the specific time parameterized in the ETS, the alarm goes off warning users of a possible problem in the device.

What kind of thermostatic control does Home Thermostat allow?

Home Thermostat allows the following types of thermostatic control:

• PI Continuous
• PI PWM
• 2 Points with Hysteresis

What kind of thermostatic control can I use with my climate system?

In a radiators system, thermostat acts over the valves of radiators, which control the hot water circulation through the radiator. If the valves are closed, the hot water from the boiler does not circulate through radiators and after a time they stop radiating heat to ambient. The valves can be:

• Two-points valve (open/close), which can be controlled with 2 Points with Hysteresis or PI-PWM thermostat.
• Motorized valve (percentage), which can be controlled with PI-Continuous thermostat

In radiant floor systems, the thermostat control acts over the valves in the collector return, in the same way that it is done in radiators system. Thus, the same kinds of thermostatic control can be used for radiant floor valves.

In a Fan Coil system, there are two elements to control: valves that allow the water flow through the pipes of the Fan Coil and the fan speed. If a thermostatic control over the valves is carried out, 2 Points with Hysteresis or PI-PWM controls can be used. If the thermostatic control should be applied over fan speed, PI-Continuous control will be the most suitable one.

In zoning systems, a 2 Points with Hysteresis or PI-PWM control acts over the grilles of the different rooms and lets the air of the pump duct get into these rooms until the real temperature in each room reaches its corresponding setpoint.

The PI thermostat demands heat/cool when the real temperature has already reached the setpoint or it does not demand heat/cool when setpoint has not been reached.

When the thermostat performs a PI thermostatic control, the objective is making the real temperature achieve the setpoint temperature, established by user. The PI thermostat calculates the difference between current real temperature and setpoint temperature (proportional part) and also the variation of real temperature during the time that thermostat is activated (integral part). For a correct functioning of the thermostat with a certain climate system, the following characteristics should be bear in mind:

•  K and T parameters should be configured according to the climate system that the thermostat is controlling. This way, the thermostat will have into account the thermal inertia of the climate system when calculating the control value.
• Cycle Time for PI control should be selected regarding the thermal inertia of the climate system. The higher the thermal inertia of the climate system is, the longer Cycle Time for PI the thermostat should have.

If these parameters (K, T and Cycle Time) are not correctly selected, the climate system is not responding to thermostat control as expected.

• The climate system should be correctly dimensioned and there should not be an external source of heat/cool different that the climate system. Otherwise, the climate system response to thermostat heat/cool demand could not be the expected and, thus, the thermostat control can be influenced.

For example: a heating system that is under-dimensioned (or it is well dimensioned but the window is open) will not heat as much as the thermostat expects regarding the K and T parameters. The thermostat will calculate a heat demand that the climate system cannot provide. Since the variation of the real temperature is lower than expected, the thermostat will increase the integral part and it will demand more heat. The result is that the climate system takes too long to reach the setpoint temperature and the real temperature will rise several degrees above the setpoint instead of maintaining this temperature.

What is the range of Setpoint Temperature in Home thermostat?

Zennio HomeThermostat admits Setpoint Temperatures between 0ºC and 95ºC.

The KNX controller in installation sends relative Setpoint Temperatures, can I use Home Thermostat?

El Termostato Home no permite establecer temperaturas de consigna relativas.

How can I make the thermostat work in Freezing protection mode?

Once the Freezing protection is enabled and the Protection temperature is set in ETS parameters, it works automatically. Whenever the real temperature (reference temperature ot the thermostat) is below the Freezing protection temperature, the Heating Control Variable is activated, regardless the thermostat is ON or OFF.

For example: when the Freezing protection temperature is 10ºC, the thermostat will send 1 if thermostat is type 2 points with hysteresis or PI-PWM, or 100% if thermostat is PI-Continuous, through the object Heating Control Variable, regardless the thermostat is ON or OFF, whenever the real temperature is below 10ºC.

How can I make the thermostat work in Overheating protection mode?

Once the Overheating protection is enabled and the Protection temperature is set in ETS parameters, it works automatically. Whenever the real temperature (reference temperature ot the thermostat) is above the Overheating protection temperature, the Cooling Control Variable is active, regardless the thermostat is ON or OFF.

For example: when the Overheating protection is 35ºC, the thermostat will send 1 if thermostat is type 2 points with hysteresis or PI-PWM, or 100% if thermostat is PI-Continuous, through the object Cooling Control Variable, regardless the thermostat is ON or OFF, whenever the real temperature is above 35ºC.

What are the special modes?

In Zennio Home Thermosat, the Special Modes are Events of Setpoint Change:

• If the thermostat is ON, when a Special Mode is triggered, the setpoint temperature for this Special Mode is established as setpoint in thermostat.
• If the thermostat is OFF, the effect of a Special Mode trigger will depend on the selected parameter of Special Mode configuration in ETS: it turns the thermostat ON and changes the setpoint, it only changes the setpoint or it does not change anything.

How could I know which Special Mode is active?

In Home Thermostat, it is not possible, since the Special Modes are not Statuses, they are Events of setpoint change.

What is the effect of a setpoint change when a Special Mode is active?

In Home Thermostat, the setpoint changes and the thermostat gets out of the special mode.

Could the setpoint temperatures of the Special Modes be sent to KNX Bus?

When a Special Mode is set, the thermostat setpoint temperature will be updated with the corresponding setpoint of the Special Mode and the thermostat setpoint status will be sent to KNX bus. However, there are not communication objects associated to thesetpoints of the Special Modes, so they cannot be read. 

How can I select the default values of the setpoint of the Special Modes?

In Home Thermostat, the setpoint temperatures of the Special Modes by default cannot be selected.

How can I change the setpoint of a Special Mode?

In Home Thermostat you can change the setpoint of a Special Modes in a dedicated page in Z38/Z38i (box 6 of Clima page have an arrow that leads you to this page) or through a communication object in the rest of devices with Home Thermostat.

How can I synchronize the setpoint temperatures of a Special Mode in different thermostats?

In Home Thermostat, synchronization of the setpoint of Special Modes for several devices (not Z38i) is possible through the communication objects for these setpoints. For Z38i, synchronization of setpoints of Special Modes is not possible, since it does not have such a communication object.

My thermostat changes between Cooling and Heating mode when I activate a Special Mode

In Home Thermostat there is not a limitation for setpoint values of Special Modes. Moreover, the Heating and Cooling bands for automatic change of mode are defined in parameters and the difference between setpoint temperature and real temperature makes the thermostat to set Heating or Cooling mode. Therefore, a change in setpoint due to Special Mode activation could cause an automatic change of mode and the end of the Special Mode event

Is it possible to set more than one security control code in the InZennio Z38?

It is possible to protect any of the pages in the InZennio as well as individual boxes in the "Home" & "Home II" pages to prevent unathorized access, however there is only one security control code to be shared by all the secured pages and boxes.

Is it possible to set the default security control code in the InZennio Z38?

It is not possible to set the default code, which will always be 1234 and should be changed by the user.

Is it possible to do a presence simulation with InZennio Z38i or Roll-ZAS?

InZennio Z38i and Roll-ZAS have a presence simulator function that uses a 1-bit object to switch on/off a circuit during random periods of time within a specified time range parameterizable in ETS.

Besides this control, InZennio Z38i and Roll-ZAS timers allow the final user to set the on and off time of a circuit simulating the presence function.

How does Presence Simulation work?

When parameterizing any of the HOME or HOME II boxes in the Panel as "Presence Simulation" or this function is activated in Roll-ZAS, 2 new Communication Objects will appear in the ETS parameterization environment:

1.- "Presence Simulation" (1 bit) -> Enable/Disable the function

2.- "Simulation Channel" (1 bit) -> Generate the ON/OFF

It will be necessary in this case to create a group address (ie "Simulation") to be linked with the "Simulation Channel" Communication object in the InZennio and also with the corresponding objects in the devices to send the ON/OFF orders randomly.Having done that, the parameterization page in the ETS allows us to set the "Starting Time" and the "Finish Time" of the Simulation as well as setting the min & max ON/OFF times of the devices.

Once the “Presence Simulation” function is enabled , “0” & “1” will be randomly sent within the previous range set by parameter.

What is the Z38i?

Z38i is the continuation of the touch panel INZennio Z38, which will replace the Z38. This change has been caused by the modification, from our supplier, of the Z38 display controller because the previous one is obsolete. Moreover, this fact involves the carrying out of certain changes in the application program that also includes some novelties

Which characteristics are different in Z38i from Z38?

The new characteristics that have been included in the Z38i are:

• The input communication objects can be linked to output communication objects of the same device without using internal links.
• The 4 binary inputs have been modified in order to be used both as conventional buttons or switches.
• The object Modes related to Clima has been updated according to standard KNX
• The display controller is different, due to the Z38 display is no longer under production.
• Simplification of the device configuration in ETS

Where can I find the information related to each panel?

At the website, each panel will have its section as independent products where all the information related to the panel can be found.

Is the Z38 application program compatible with Z38i?

No, there is a specific application program for Z38i which is not compatible with Z38, and vice versa.

Will the Z38 application program go on being updated?

The Z38 application program will go on being supported and the bugs that may occur will be corrected.

How do I differentiate between a Z38 and a Z38i?

The panel serigraphy indicates us if the panel is a Z38 or a Z38i.

Moreover we can check the serial number, since the panels from serial number 10AAD are Z38i, or the product code.

Could the Clima pages be linked to Home page in the Z38i, as we did with Z38?

In the Z38i, the parameter “Linked to” used to link the Home Boxes to specific boxes in Clima pages has disappeared. However, Home boxes can be linked to boxes in specific pages linking the corresponding communication objects by means of group addresses.

Why have the internal links been removed?

The management of the new controller demands more memory resources. As the communication between objects of the same device is now allowed, the internal links are not needed anymore and we can have the necessary memory for the controller management.

What does it happen if the display of my Z38 breaks?

We have enough stock for covering possible repairs during a long period of time.

The display on the Panel remains blank and nothing can be downloaded onto it.

This issue may be caused by an error while downloading, by a wrong application program download... To unblock the Panel, it will be necessary to put the device in secure mode to later make a complete application program download.

To set the secure mode:

1.Disconnect the device from the BUS

2.Reconnect the device to the BUS while keeping the programming button pressed. Whenever the device is in secure mode the led will blink every 0.5 seconds.

3.Download the complete right Application Program onto the device (contact Technical Support)

4. When the download is finished, disconnect and reconnect the device from the bus.

Icons on the displays become distorted. What´s happening?

This is a known issue which might affect some Z38 touch panel (with serial number 09AAZ or previous) with an Application Program previous to version Z38 4.0. To solve it, please download the most recent version of application program Z38 (not Z38i) onto the Touch Panel.

Our products are innovative and versatile. Several products in our catalogue offer the possibility to download on them different Application Programs depending on the funcionality required in the installation.

A brief summary of the possibilities is shown next:

Ref: "ZN1VI-TP38" Touch Panel Z38

• InZennio Z38 -> Panel with tactil display, ambient thermostat, IR receiver and binary inputs.
• IRSC Test -> Application developed to simulate the operation of an Air Conditiong split unit showing on the Z38 display the status information. This way, integrators can test the IRSC performance without phisically having a Split unit.

Ref: "ZN1VI-TP38i" Touch Panel Z38i

• InZennio Z38i -> Panel with tactil display, ambient thermostat, IR receiver and binary inputs.
• IRSC Test -> Application developed to simulate the operation of an Air Conditiong split unit showing on the Z38 display the status information. This way, integrators can test the IRSC performance without phisically having a Split unit.
• IRSC Open Capture ->Application specifically developed to capture infrared frames from IR remote controllers.

Ref:"ZN1VI-TPZAS" touch controller ZAS

• ZAS -> This application groups the functionality of the controller in a Menu, which is divided in several submenus (Thermostat, Security, Scenes, etc.). It is possible to configure the functionality of up to 8 buttons in total, which carry out different actions, according to the ETS configuration.
• Roll-ZAS -> Add even more versatility to the room controller. The information is divided into pages (up to a total of 4 direct-action button pages, besides specific pages, such as Security, Configuration, etc.). In every button page, it is possible to configure up to 8 buttons (32 buttons in total), which will carry out different actions, according to the ETS configuration.

Ref: "ZN1IO-AB40" ActinBox QUATRO

• ACTinBOX QUATRO -> KNX Actuator combining 4 x 16A multifunction binary outputs (individual or shutter channel) with multioperation logical functions
• ACTinBOX QUATRO Fan Coil Controller -> Application developed to control 2 pipe Fan Coils.

Ref: "ZN1IO-AB60" ActinBox MAX6

• ACTinBOX MAX6 -> KNX Actuator combining 6 x 10A multifunction binary outputs (individual or shutter channel) with multioperation Logical Functions
• ACTinBOX MAX6 Fan Coil Controller-> Application developed to control 2 or 4 pipe Fan Coils + 1 General purpose output

Ref: " ZN1DI-RGBX3" Lumento X3

• LUMENTO X3 RGB -> joint control over one tricolor (RGB) LED module.
• LUMENTO X3 LED -> independent control over up to 3 monocolor LED modules.

Ref: " ZN1DI-RGBX4" Lumento X4

• Lumento X4 RGB -> joint control over one LED module of 4 colors (RGBW).
• Lumento X4 LED -> independent control over up to 4 monocolor LED modules.
• Lumento X4 WHITE -> control over two WHITE LED modules of 2 channels (warm white and cold white).

Ref: "ZN1CL-IRSC" IRSC

• IRSC Plus -> Designed to control Air Conditioning Systems with an IR receiver, including splits, ducted units with IR interface, or those to which one can be adapted.
• IRSC Zone -> Application Program specifically developed to control Air ducted zoning systems (up to 8 zones) con grilles and/or motorized gates.
• IRSC Open -> Application specifically developed to carry out an IR control via the KNX system. After analyzing theorders emitted by the infrared remote control, these orders can be send from any device in the KNX installation.

Ref: "ZN1RX-SKXOPEN" SKX-OPEN

• SKX Open -> Allow controlling devices with a RS232 port via KNX. Basic funcionality offers "1 bit" objects and a maximum frame length of "10 bytes".
• SKX Advance -> Allow controlling devices with a RS232 port via KNX. Advanced funcionality offers "1 bit", "1 byte" and "14 bytes" objects and a maximum frame lenght of "29 bytes".

Ref: "ZN1IO-KES" KES

• KES 3xSingle-Phase -> Allow monitoring up to 3 single-phase electrical circuits independently.
• KES 1xThree-Phase ->Allow monitoring 1 three-phase electrical circuit.

What does safe mode mean?

When a device is running in safe mode the programming LED blinks in red, meaning that the application program is halted.

How to set a device in safe mode?

To activate the safe mode, keep the programming button pressed while connecting the device into the KNX bus. This process is described in the datasheet of the device.

How to exit from safe mode?

To exit from safe mode, simply plug the KNX bus into the device but do not press the programming button this time. This way the programming LED does not blink, meaning that the application program is running (safe mode is not active).

How do a download in safe mode?

When an incidence is caused during the download, it is recommended to do a safe mode download, to ensure that the previous corrupted download doesn’t affect to this new download: 

To do a download in safe mode, you should follow the next steps:

1. Disconnect the device from KNX bus.
2. Connect the device to KNX bus while holding down the programming button. The programming LED will start blinking indicating that the device is in safe mode.
3. Once in safe mode, download the application program completely to the device.
4. When the download is finished, disconnect and reconnect the device from the bus.

Inputs number and type of each Zennio device.

Zennio devices have two input types :

-       Binary inputs: to connect push buttons/switches.

-       Analog-digital inputs: to connect motion sensors or temperature probes. Also configurable as binary inputs.

*Inputs not available for luminosity sensor functionality.