R. STAHL 9276/10-21-60-00s Galvanic Isolator
Loop-Powered Binary Output, Ex i Field Circuit
Product Overview
The R. STAHL 9276/10-21-60-00s is a galvanic isolator designed for loop-powered binary output in Ex i field circuits. It provides signal transmission for intrinsically safe operation of Ex i solenoid valves, indicator lights, or sirens. These devices do not require a separate auxiliary power supply as they are powered by the control circuit. The intrinsically safe outputs are electrically isolated from the inputs.
Key features include:
- Important portfolio for a wide range of solenoid valves
- Space-saving due to narrow construction – 12.5 mm wide
- Usable up to SIL 3 (IEC/EN 61508)
Technical Specifications
Protection Against Explosions
| Parameter | Value |
|---|---|
| Application Area (Zones) | 0, 1, 2, 20, 21, 22 |
| Interface Ex Zone | IECEx IBE 17.0045X |
| IECEx Gas Explosion Protection | Ex ec [ia IIB Ga] IIC T4 Gc |
| IECEx Dust Explosion Protection | IECEx IBE 17.0045X [Ex ia Da] IIIC |
| IECEx Methane Explosion Protection | IECEx IBE 17.0045X [Ex ia Ma] I |
| ATEX Gas Explosion Protection | IBEXU 17 ATEX 1153 X II 3 (1) G Ex ec [ia IIB Ga] IIC T4 Gc |
| ATEX Dust Explosion Protection | IBEXU 17 ATEX 1153 X II (1) D [Ex ia Da] IIIC |
| ATEX Methane Explosion Protection | IBEXU 17 ATEX 1153 X I (M1) [Ex ia Ma] I |
| cULus Certification | E81680 |
| cULus Identification | Class I, Div. 2, Groups A,B,C,D; Class I, Zone 2, AEx/Ex nA Group IIC; AIS Class I,II,III, Div. 1, Groups A,B,C,D,E,F,G; Class I, Zone 0, [AEx ia]/[Ex ia] IIC; T4 any mounting pos. Ta = 60°C |
| Certifications | ATEX (IBE), Canada (CSA), China (CQM), États-Unis (UL), IECEx (IBE), SIL (exida), DNV, ATEX (EUK), China (CCC) |
Safety Values
| Parameter | Value |
|---|---|
| Maximum Voltage U | 25.1 V |
| Maximum Current I (Ex ia) | 188 mA |
| Maximum Power P | 1180 mW |
| Max. External Capacitance C for IIB | 0.83 μF |
| Max. External Inductance L for IIB | 4 mH |
| Max. External Capacitance for IIA | 2.93 μF |
| Max. External Inductance for IIA | 7.5 mH |
| Max. External Capacitance for IIIC | 0.83 μF |
| Max. External Inductance for IIIC | 4 mH |
| Max. External Capacitance for I | 2.93 μF |
| Max. External Inductance for I | 7.5 mH |
| Internal Capacitance | Negligible |
| Internal Inductance | Negligible |
| Maximum Technical Safety Voltage | 253 V AC |
| Functional Safety SIL | 3 |
| HFT | 0 |
| SFF | 100% |
| Lambda SD | 0 FIT |
| Lambda SU | 50 FIT |
| Lambda DD | 0 FIT |
| Lambda DU | 0 FIT |
Electrical Characteristics
| Parameter | Value |
|---|---|
| Number of Channels | 1 |
| Auxiliary Power | None |
| Maximum Dissipated Power | 1.33 W |
| Reverse Polarity Protection | Yes |
Electrical Separation
| Parameter | Value |
|---|---|
| Test Voltage per Standard | EN IEC 60079-11 |
| Electrical Separation Ex i Output to Input | 375 V AC peak value |
| Input Voltage for ON | 15-30 V |
| Input Voltage for OFF | 0-5 V |
| Output Open-Circuit Voltage U | 21.9 V |
| Maximum Output Current I | 58 mA |
| Output Internal Resistance R | 133.4 Ω |
| Switching Delay ON/OFF | ≤ 20 ms |
| Switching Delay OFF/ON | ≤ 20 ms |
| Output Stabilization Time | 20 ms |
| Switching Status Indication | Yellow LED "STAT" |
Ambient Conditions
| Parameter | Value |
|---|---|
| Ambient Temperature | -40 °C ... 60 °C (-40 °F ... +140 °F) |
| Storage Temperature | -40 °C ... 80 °C (-40 °F ... +176 °F) |
| Maximum Relative Humidity | 10 ... 95% |
| Altitude of Operation | < 2000 m |
| Electromagnetic Compatibility | EN 61326-1, Industrial environment; Immunity according to EN 61000-6-2; Emission according to EN 61000-6-4 |
Mechanical Characteristics
| Parameter | Value |
|---|---|
| Degree of Protection (IP) | IP30 |
| Degree of Protection (IP) Pins | IP20 |
| Fire Resistance (UL 94) | V0 |
| Housing Material | Polyamide |
| Pitch | 12.5 mm (0.49 in) |
| Width | 12.5 mm (0.49 in) |
| Height | 114.5 mm (4.51 in) |
| Length | 112.5 mm (4.43 in) |
| Weight | 165 g (0.36 lb) |
Mounting / Installation
| Parameter | Value |
|---|---|
| Mounting Type | DIN Rail NS35/15, NS35/7.5 |
| Mounting Position | Vertical, Horizontal |
| Connection Type | Screw terminal |
| Minimum Rigid Conductor Section | 0.2 mm² |
| Maximum Rigid Conductor Section | 2.5 mm² |
| Minimum Flexible Conductor Section | 0.2 mm² |
| Maximum Flexible Conductor Section | 2.5 mm² |
| Connection Section AWG | 24 ... 14 |
Technical Drawings
Output Voltage vs. Output Current: The diagram shows a graph illustrating the relationship between output voltage and output current. The output voltage starts at approximately 21.9 V and decreases as the output current increases, reaching about 12.9 V at the maximum current.
Outline Drawing: The outline drawing provides dimensions of the device. The overall length is 112.50 mm [4.43 in], width is 12.50 mm [0.49 in], and height is 114.50 mm [4.51 in]. It also indicates the mounting rail compatibility and shows a connection terminal block.
