SISU External Voltage to SI System Voltage Converter Data Sheet - Article 09500180

Sep 6, 2026

Upload by Riley

SISU is a signal voltage converter that integrates external system couplers into an SI impulse system by converting external voltages or protocols into SI system voltage signals. Inputs in the ranges 0–50 V AC/DC or 0–230 V AC/DC are converted to 0 V DC or 24 V DC outputs, enabling control of SI system components. Compact DIN-rail mounting supports flexible installation positions, with LED display operation and specified debouncing times. Notes require that both SISU inputs are not used simultaneously.

LanguageEnglish

CategoryTechnology

FormatPDF

Pages2

Reading Time5 min

AccessFree to download

Function

Features

Mounting

Applications

Notes

Technical Data

Doepke | The experts in residual current protection technology | | | | --- | --- | --- | | | DATA SHEET
SISU
External voltage to SI system voltage converter Article number 09500180 | | | Function
"Couplers for external systems" are devices that can send and receive external voltages or protocols. For this reason they can also be called interfaces. The SISU signal voltage converter is a component of the SI impulse system and facilitates the conversion of an external voltage signal into the SI system voltage. The signal to be converted in a range of 0-50 V AC/DC or 0-230 V AC/DC is converted into a 0 V DC or 24 V DC signal. The output signal can then be used to control components of the SI system.
Features
conversion of an external voltage level (0-50 V AC/DC or 0-230 V AC/DC) to SI internal voltage, allow integration of external signal sources in the SI system, compact, space-saving design
Mounting
quick fastening to mounting rail, any installation position
Applications
The SISU is preferably used for integrating external system sensors or signal devices in the SI system. These devices may be motion detectors or external weather stations with external voltages, for example.
Notes
The two SISU inputs must not be used atthe same time.
Technical Data
| | | | Technical Data | SISU | | | Series | SISU | | | Manual operating mode possible | true | | | Operating voltage source | external power supply | | | Operating voltage (DC) | 24 V (21.5 V ... 26.5 V) | | | | Display Operation | | | Type | LED | | | | Control input | | | Rated voltage (AC) | 110 V ... 230 V | | | Rated voltage (DC) | 110 V ... 230 V | | | min. Input I1 Debouncing time | 15 ms | | | Load factor | 1 ELF | | | | Control input | | | Rated voltage (AC) | 12 V ... 50 V | | | Rated voltage (DC) | 12 V ... 50 V | | | min. Input I2 Debouncing time | 10 ms | | | Load factor | 1 ELF | | | | Semiconductor output | | | Number | 1 | | | Rated voltage (DC) | 24 V | | | Rated current (DC) | 0.05 A | | | Load factor | 20 ALF | | Doepke | The experts in residual current protection technology | | | --- | --- | | Technical Data | SISU | | | Screw-type terminal | | Clamping area | 0.4 mm² ... 2.5 mm² | | Cross section solid | 1-wire: max. 2.5 mm² | | Cross section stranded | 1-wire: max. 1.5 mm² | | Tightening torque | max. 0.6 Nm | | General data description | General data | | Operating position | any | | Ambient temperature | -10 °C ... 45 °C | | Housing type | Distributor housing | | Mounting type | Mounting rail | | Housing material | Polycarbonate (PC), ABS resin | | Protection class | IP20 | | Width | 18 mm | | Height | 85 mm | | Depth | 65 mm | | Installation depth | 58 mm | | Width (modules) | 1 | | Design requirements/Standards | EN 60669-1 | Dimensions Dimensional drawing Group view

FAQs

What does the SISU converter do in the SI impulse system?

It converts an external voltage signal into SI system voltage signals, allowing external sources to be integrated into the SI system for control purposes.

Which input voltage ranges and output signals does SISU support?

SISU accepts 0–50 V AC/DC or 0–230 V AC/DC and converts them into 0 V DC or 24 V DC output signals.

Are there any installation or operating constraints for SISU inputs?

Yes—both SISU inputs must not be used at the same time, and mounting is done via quick fastening to a mounting rail in any installation position.

Sep 6, 2026

Upload by Riley