R. STAHL Isolators
Loop-Powered Binary Output Ex i Field Circuit
Model: 9276/10-21-60-00s | Article No.: 261443
Product Overview
The R. STAHL 9276A is a loop-powered binary output device for Ex i field circuits. It is designed to emit signals for the operation of intrinsic safety elements such as Ex i solenoid valves, pilot lights, or horns. The devices do not require separate auxiliary power, as they are supplied via the control circuit. The intrinsic safety output signals are galvanically isolated from the inputs.
Key Features:
- Extensive catalog for a wide range of solenoid valves
- Space-saving design with a width of 12.5 mm
- Usable up to SIL 3 (IEC/EN 61508)
Technical Data
Explosion Protection
| Applications (zones) | 2 |
| Interface Ex zone | 0, 1, 2, 20, 21, 22 |
| Homologation IECEX gas | IECEx IBE 17.0045X |
| IECEx Gas Explosion Protection | Ex ec [ia IIB Ga] IIC T4 Gc |
| Homologation IECEx dust | IECEx IBE 17.0045X |
| IECEx Dust Explosion Protection | [Ex ia Da] IIIC |
| Homologation IECEx firedamp | IECEx IBE 17.0045X |
| IECEx Firedamp Explosion Protection | [Ex ia Ma] I |
| Homologation ATEX gas | IBEXU 17 ATEX 1153 X |
| ATEX Gas Explosion Protection | II 3 (1) G Ex ec [ia IIB Ga] IIC T4 Gc |
| Homologation ATEX dust | IBEXU 17 ATEX 1153 X |
| ATEX Dust Explosion Protection | II (1) D [Ex ia Da] IIIC |
| Homologation ATEX firedamp | IBEXU 17 ATEX 1153 X |
| ATEX Firedamp Explosion Protection | I (M1) [Ex ia Ma] I |
| Homologation cULus | 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 See Doc. 9276 6 031 001 3 |
Certifications
| Marine Certification | ATEX (IBE), Canada (CSA), China (CQM), USA (UL), IECEx (IBE), SIL (exida) |
| Certificate of Conformity | ATEX (EUK), China (CCC) |
Safety Data
| Maximum voltage U | 25.1 V |
| Maximum current I (Ex ia) | 188 mA |
| Maximum power P. | 1180 mW |
| Maximum external admissible capacitance C. for IIB | 0.83 µF |
| Maximum external admissible inductance L. for IIB | 4 mH |
| Maximum admissible capacitance IIA | 2.93 µF |
| Maximum admissible inductance IIA | 7.5 mH |
| Max. admissible capacitance IIIC | 0.83 µF |
| Max. admissible inductance IIIC | 4 mH |
| Maximum admissible capacitance I | 2.93 µF |
| Maximum external admissible inductance L. for I | 7.5 mH |
| Internal Inductance | Irrelevant |
| Internal Capacitance | Irrelevant |
| Maximum technical safety voltage | 253 V AC |
Intrinsic Safety Limits (Inductance L / Capacitance C)
| Commonly connectable inductance L / capacitance C | |||||
|---|---|---|---|---|---|
| L [mH] | C [µF] | L [mH] | C [µF] | ||
| IIC | 2 mH | 0.300 µF | 0.500 mH | 0.100 mH | |
| IIB | 1 mH | 0.370 µF | 0.460 µF | 0.790 µF | |
| IIA | 5 mH | 0.510 µF | 0.560 µF | 0.660 µF | 1 µF |
| IIIC | 2 mH | 0.300 µF | 0.500 mH | 0.100 mH | |
| I | 5 mH | 0.510 µF | 0.560 µF | 0.660 µF | 1 µF |
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 Data
| Number of channels | 1 |
| Auxiliary power | None |
| Maximum dissipated power | 1.33 W |
| Reverse polarity protection | Yes ✔️ |
Galvanic Separation
| Galvanic separation output Ex i to input | 375 V AC maximum value |
Input
| Input voltage for ON | 15 - 30 V |
| Input voltage for OFF | 0 - 5 V |
Output
| Output voltage in open circuit U₂ | 21.9 V |
| Maximum output current I₂ max | 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" |
Environmental Conditions
| 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 use | < 2000 m |
| Electromagnetic compatibility | Industrial environment EN 61326-1 Immunity according to EN 61000-6-2 Radiated spurious emissions according to EN 61000-6-4 |
Mechanical Data
| Degree of protection (IP) | IP30 |
| Degree of protection (IP) terminals | IP20 |
| Fire resistance (UL 94) | VO |
| Enclosure material | Polyamide |
| Grid dimension | 12.5 mm |
| Width | 12.5 mm |
| Mounting width in inches | 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
| Mounting type | DIN rail NS35/15, NS35/7.5 |
| Mounting position | Vertical / Horizontal |
| Connection type | Screw terminal |
| Minimum rigid conductor cross-section | 0.2 mm² |
| Maximum flexible conductor cross-section | 2.5 mm² |
| Minimum flexible conductor cross-section | 0.2 mm² |
| Ambient temperature AWG | 24 ... 14 |
Dimensional Drawing
Schematic of dimensions (all measurements in [inches]) – Subject to modifications
Diagram Description:
The diagram shows a rectangular device with mounting points and terminal connections. Key dimensions are labeled: Height 114.50 [4.51], Length 112.50 [4.43], Width 12.50 [0.49]. It also indicates compatibility with the Ispac series 9260, 9265, 9270, 9275, 9276, 9282 with screw terminals.
