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Integration of Satel Integra 128 PIR detectors with S7-1200 PLC in a domestic installation

Banan87 2460 13
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  • #1 16744857
    Banan87
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    Hello,
    I am getting down to designing the installation in my house.
    The project involves using a Satel Integra 128 control panel and a PLC - S7-1200.
    I know that practically most of the assumptions could be realised with SATEL alone, but due to my professional deviation I want to use a PLC. Additionally, it will be easier for me to build a web interface to manage the whole thing externally.

    Assumptions:
    - automatic switching of lighting when entering rooms,
    - closing of roller blinds when the alarm system is activated,
    - automatic switching off the air-conditioning when nobody is in the room,
    - external lighting control
    and much more.

    Wiring assumptions:
    - each light switch 2xUTP (bistable relay control, temperature sensor).
    - each socket 3x2.5mm2 + 1xUTP cable (NC monostable relays will be flush mounted).
    - UTP in any place assuming the need for control now or in the future (gas cooker, fireplace, awning on the garden, garage door etc.).

    The design is roughly done (I'll brag about it when I'm finished). I have set about working out the logic and establishing the output inputs on the Satel and PLC and have encountered one problem - connecting the PIR detectors to the PLC.

    Namely - the SATEL outputs are all low current OpenColector type, the inputs on the PLC are 24V voltage.
    I have no idea at this time how to transfer the status of the detectors between SATEL and the PLC.
    What solution do you recommend?
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  • #2 16744988
    pafciowaw
    Automation specialist  
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    Transoptor board (ICs) - making the board + ARK terminals + integrated transoptors = a pittance....
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    #3 16745027
    Rysiek2
    CCTV and Stationary Alarms specialist  
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    Banan87 wrote:
    automatic shutdown of air conditioning when no one is in the room,
    .
    What is your concept for detecting such a condition?
  • #4 16745056
    Banan87
    Level 12  
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    Hello,
    Right - the matter is child's play. Expander INT-O has 8 relay outputs. The total number of detectors which I would need to observe would be about 16 - so two expansion modules. From what I've read, INTEGRA 128 allows expansion by 14 output modules.
    Thanks a lot

    From your experience - what relays do you recommend for lighting control. I was wondering about the F&F BIS411i (24V).
    However, they do not have any output to confirm the current status of the relay. Of course, I can build software to record the lighting states after an edge on the button input....

    Which relays do you recommend?

    Thanks a lot.
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  • #5 16745066
    jann111
    Level 33  
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    Banan87 wrote:
    What relays do you recommend?
    It's a good idea to use a relay.
    Use int-iors expanders on the bus. The load capacity of their relays will safely handle most consumers in a lighting and roller shutter installation. And for air-conditioning control they can control suitably selected contactors.
    In summary, a PLC may be unnecessary and the whole system can be based on Integra.
  • #6 16746076
    CYRUS2
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    Banan87 wrote:
    From your experience - what relays do you recommend for lighting control.
    Satel expander relays for 230V AC.
    I have done control of 50 lamps in a Hospital on this.
    Bistability will be taken care of by Satel's control panel software.
    Banan87 wrote:
    However, they have no output to confirm the current status of the relay.
    You will have status from Satel.
    Banan87 wrote:
    Of course I can build software that will record the lighting states after the edge on the button input...
    This will be done by the Satel control panel.
    jann111 wrote:
    In summary, a PLC may be unnecessary and the whole thing can be based on an Integra.
    I think so too.
    In terms of service at the hospital, Satel was unrivalled by PLC.

    Not only that - a colleague has an ABAX ductless system at his disposal.
    A super-system, as it realises communication with the sensors in both directions.

    I haven't worked on Satel for 10 years.
    I am not up to date.
    Today Satel has certainly and increased the capabilities of the control panel.

    I made - modules to control Satel inputs with 230V. In this option, Stel supervised the 230V AC mains power outage.
    He called the mobile phone, to the operator with the information.
    He simply talked on which device there was a voltage outage.
    With real-time recording.
  • #7 16746109
    marek216
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    Banan87 wrote:
    - automatic shut-off of air conditioning when no one is in the room,
    .

    Rysiek2 wrote:
    What is your concept for detecting such a condition?
    .

    You can use the absence of a detector violation within a certain time period.
  • #8 16746131
    CYRUS2
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    Quote:
    What concept do you have for detecting such a condition?
    Quote:
    You could use the absence of a detector violation within a certain time period.
    .
    I don't know if this will pass the test.
    If someone is asleep,it will identify their absence.
  • #9 16746844
    Szyszkownik Kilkujadek
    Level 37  
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    I support the previous speakers. Satel is enough, and the web interface to control the light is a nice fiddly thing to play with and gets boring after a year. I know from my own experience. :-D .
    Now there is a smartphone app for Integra and this will take care of the status visualisation and control.

    Occupancy sensor + climate control = I would give it a go.
  • #10 16748125
    Chris_W
    Level 39  
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    BK_klp wrote:
    .

    Occupancy sensor + air-conditioning = I would give up on it.

    All the more so as the savings are small. If the air-conditioning is switched off for an hour (from cooling in summer), the room heats up and when the person enters it has to use more energy to cool down to the set point again. During this time, a person sits in a hot room and is subjected to a stream of cold air, which is not healthy.
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  • #11 16748135
    Rysiek2
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    marek216 wrote:
    .
    Lynx2 wrote:
    What is your concept for detecting such a condition?


    You can use the absence of a detector violation within a certain time period.
    .
    Do you think that if someone is sleeping they don't need air conditioning :) ?
  • #12 16748184
    suworow
    VIP Meritorious for electroda.pl  
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    Rysiek2 wrote:
    You think that if someone is sleeping they don't need air conditioning :) ?

    Lynx, the author of the idea probably made the assumption that when he sleeps or just sits quietly, he doesn't move and thus sweats less ;) .
    Then there are the tajmers.
    We do not know the specifics of the room and how it is used. Perhaps it is the case that someone stays there for a maximum of a few hours and such a climate control makes some sense.
    Not so long ago there was a topic where the author wanted to switch off the underfloor heating when the window was opened. As far as I remember, a specialist in heating systems got involved in the discussion and explained to the author exactly what any reasonably intelligent person should feel and know, e.g. about inertia, about the fact that the best results in heating heavy buildings are obtained when we keep the temperature in them relatively constant.
    No offence, but the impression, based on reading the forum topics as well as my own observations, is that this type of idea finds most interest among IT professionals who, delighted with the possibility of "digitalising" their home, completely forget about the laws of physics.
  • #13 16748407
    bhtom
    Level 39  
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    Welcome,

    jann111 wrote:
    Apply int-iors expanders to the bus. The load capacity of their relays will comfortably handle most loads in a lighting and roller shutter installation.


    If this is to be done decently then any receivers should be controlled from external relays or contactors and not from those built into the int-iors. Obviously this requires more space in the switchgear, but then there is no problem replacing the relay if its contacts are burnt out or stuck together.

    Confirmation of on/off can be realised on the auxiliary contacts of an external relay (contactor).

    Regards.
  • #14 16748645
    Rysiek2
    CCTV and Stationary Alarms specialist  
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    suworow wrote:
    Taymers are also available.
    .
    That's right.
    Ba, if one were to take such a transcendental approach there are still Tajmers and Nalysh.
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Topic summary

✨ The discussion centers on integrating Satel Integra 128 alarm control panel with Siemens S7-1200 PLC for a domestic automation project involving lighting, roller blinds, air-conditioning, and external device control. The user plans to use Satel's INT-O expander modules to monitor approximately 16 PIR detectors and seeks recommendations for relays suitable for lighting control, considering options like F&F BIS411i (24V) but noting the lack of output status feedback. Responses highlight that Satel's built-in relay expanders (int-iors) can handle lighting and roller shutter loads and control contactors for air-conditioning, suggesting that a PLC may be unnecessary. Satel's software manages bistable relays and provides status feedback, with modern versions supporting smartphone apps for remote control and visualization. For reliable relay status confirmation, external relays or contactors with auxiliary contacts are recommended over internal relays to facilitate maintenance and feedback. The discussion also touches on occupancy detection challenges for climate control, noting that absence detection may fail if occupants are inactive or sleeping, and that energy savings from switching off air-conditioning may be minimal due to thermal inertia and comfort considerations. Overall, Satel's expanded capabilities and integrated solutions are deemed sufficient for the described automation tasks, with PLC integration being optional and primarily for custom web interface development.
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FAQ

TL;DR: Use Satel expanders or an optocoupler board to bridge PIRs to an S7‑1200; one installer ran 50 lamps on Integra, and “Satel was unrivalled by PLC.” [Elektroda, CYRUS2, post #16746076]

Why it matters: This FAQ helps DIYers and integrators pick a reliable, serviceable way to link Satel Integra 128 motion detection with Siemens S7‑1200 logic in real homes.

Quick-Facts

Quick Facts

How do I connect Satel PIR detector outputs to a Siemens S7‑1200 PLC safely?

Use an optocoupler board between Satel’s open-collector outputs and the PLC’s 24 V inputs. It provides galvanic isolation and level shifting. Keep wiring short, add input filtering in the PLC, and label channels clearly. This is the lowest-cost, robust bridge for status transfer. [Elektroda, pafciowaw, post #16744988]

Is a PLC even necessary with Integra 128 for home lighting and shutters?

Many installers run everything on Satel. INT‑IORS bus expanders switch lighting and roller shutters directly, and control larger loads via contactors. One expert notes a PLC may be unnecessary. “A PLC may be unnecessary.” [Elektroda, jann111, post #16745066]

Can I instead use Satel relay expanders to feed the PLC?

Yes. Use INT‑O/INT‑ORS dry contacts as clean status inputs to the S7‑1200. INT‑O provides 8 relay outputs per module. Integra 128 can expand with up to 14 output modules, giving ample I/O headroom. [Elektroda, Banan87, post #16745056]

What relays should I pick for lighting and roller shutters?

Use INT‑IORS for typical lighting and shutter loads. For heavier or inductive loads, drive external contactors from the expander. This improves longevity and simplifies maintenance. For AC compressors, always switch with properly rated contactors. [Elektroda, jann111, post #16745066]

How can I confirm a relay’s actual ON/OFF state for visualization?

Wire auxiliary contacts from your external relay or contactor back to an input. This gives positive feedback independent of command logic. It also aids fault diagnostics after service events. [Elektroda, bhtom, post #16748407]

What’s a transoptor (optocoupler) and why use it here?

A transoptor is an LED and phototransistor in one package that transfers signals with electrical isolation. It protects the PLC from ground loops and spikes when reading Satel’s open‑collector outputs. It’s cheap and reliable for mixed‑voltage links. [Elektroda, pafciowaw, post #16744988]

How should I detect room vacancy to control air‑conditioning?

You can use a timer that declares vacancy after no PIR violations for a set period. Combine with manual overrides and sleep modes. Use longer delays in bedrooms to avoid discomfort. [Elektroda, marek216, post #16746109]

What’s the edge case with motion‑based AC control I must handle?

Sleeping users can be misdetected as absent, shutting AC and reducing comfort. Add night profiles or door sensors to prevent false vacancy. [Elektroda, CYRUS2, post #16746131]

Will switching AC off when the room is empty save energy?

Savings can be small. Rooms heat up; the unit then works harder to return to setpoint, causing discomfort and potential health issues from cold drafts. [Elektroda, Chris_W, post #16748125]

Is there a mobile app or web interface for Integra today?

Yes. An Integra smartphone app provides status visualization and control. Users report that custom web interfaces lose appeal over time versus using the app. [Elektroda, Szyszkownik Kilkujadek, post #16746844]

How many outputs can I realistically get from Integra 128 for automations?

Start with INT‑O at 8 relays each. Integra 128 allows up to 14 output modules, scaling to dozens of controllable circuits for lights and shades. [Elektroda, Banan87, post #16745056]

Any proof Integra can run large lighting systems reliably?

Yes. One installer controlled 50 lamps in a hospital with Satel expanders. He concluded serviceability beat a PLC in that context. “Satel was unrivalled by PLC.” [Elektroda, CYRUS2, post #16746076]

How can I make Satel report a 230 V mains outage on specific circuits?

Use input modules or custom interface boards that sense 230 V presence and signal Integra inputs. The panel can call and report which device lost voltage, with timestamps. [Elektroda, CYRUS2, post #16746076]

Give me a simple 3‑step wiring plan to read PIR status in S7‑1200.

  1. Route Satel OC output into an optocoupler input with proper resistor.
  2. Power the optocoupler output from 24 VDC and land it on the PLC input.
  3. Configure a debounced, rising‑edge tag in the PLC to log motion. [Elektroda, pafciowaw, post #16744988]
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