R. STAHL 9276/10-21-40-00s: Loop-Powered Binary Output for Ex i Field Circuits

Article No. 261441

Product Overview

The R. STAHL 9276/10-21-40-00s is a loop-powered binary output device designed for intrinsically safe (Ex i) field circuits. It provides signals for Ex i solenoid valves, signal lamps, or horns. A key feature is its ability to operate without separate auxiliary power, drawing energy from the control current. The device offers galvanic isolation between the intrinsically safe outputs and the inputs.

Key advantages include:

Extensive portfolio for a wide range of solenoid valves.
Space-saving design with a narrow profile of 12.5 mm.
Suitable for use up to SIL 3 (IEC/EN 61508).

Technical Data

Explosion Protection

Parameter	Value
Explosion Protection Zone	2
Ex Interface Zone	0, 1, 2, 20, 21, 22
IECEx Certificate Gas	IECEx IBE 17.0045X
IECEx Gas Explosion Protection	Ex ec [ia Ga] IIC T4 Gc
IECEx Certificate Dust	IECEx IBE 17.0045X
IECEx Dust Explosion Protection	[Ex ia Da] IIIC
IECEx Certificate Safety Shroud	IECEx IBE 17.0045X
IECEx Safety Shroud Protection	[Ex ia Ma] I
ATEX Certificate Gas	IBEXU 17 ATEX 1153 X
ATEX Gas Explosion Protection	II 3 (1) G Ex ec [ia Ga] IIC T4 Gc
ATEX Certificate Dust	IBEXU 17 ATEX 1153 X
ATEX Dust Explosion Protection	II (1) D [Ex ia Da] IIIC
ATEX Certificate Safety Shroud	IBEXU 17 ATEX 1153 X
ATEX Safety Shroud Protection	I (M1) [Ex ia Ma] I
cULus Certification	E81680
cULus Marking	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	ATEX (IBE), IECEx (IBE), Canada (UL), Korea (KTL), SIL (exida), USA (UL), People's Republic of China (CQM); DNV
Marine Approval	ATEX (EUK), People's Republic of China (CCC)
Conformity Declarations

Safety Data

Parameter	Value
Max. Current I. (Ex ia)	87 mA
Max. Power P.	550 mW
Max. permissible external capacitance C. for IIC	0.108 μF
Max. permissible external inductance L. for IIC	5 mH
Max. permissible external capacitance C. for IIB	0.83 μF
Max. permissible external inductance L. for IIB	20 mH
Max. permissible external capacitance C. for IIA	2.93 μF
Max. permissible external inductance L. for IIA	45 mH
Max. permissible external capacitance C. for IIIC	0.83 μF
Max. permissible external inductance L. for IIIC	20 mH
Max. permissible external capacitance C. for I	2.93 μF
Max. permissible external inductance L. for I	45 mH
Internal Capacitance C	Negligible
Internal Inductance L	Negligible
Max. Safety Voltage U	253 V AC

Intrinsically Safe Limits (External Inductance L / Capacitance C)

Group	L. [mH]		C. [µF]
Group	1 mH	2 mH	0.052 µF	0.065 µF
IIC	1 mH	2 mH	0.052 µF	0.065 µF
IIB	5 mH	10 mH	0.380 µF	0.380 µF
IIA	5 mH	20 mH	0.600 µF	0.610 µF
IIIC	5 mH	10 mH	0.380 µF	0.380 µF
I	5 mH	20 mH	0.600 µF	0.610 µF

Functional Safety

Parameter	Value
SIL	3
HFT	0
SFF	100%
Lambda SD	0 FIT
Lambda SU	50 FIT
Lambda DD	0 FIT
Lambda DU	0 FIT

Electrical Data

Parameter	Value
Number of Channels	1

Electrical Specifications

Parameter	Value
Auxiliary Power	None
Max. Power Dissipation	1.06 W
Reverse Polarity Protection	Yes
Galvanic Isolation	Yes
Test Voltage per Standard	EN IEC 60079-11
Ex i Output to Input	375 V AC Peak

Input

Parameter	Value
Input Voltage for ON	15 - 30 V
Input Voltage for OFF	0 - 5 V

Output

Parameter	Value
Output Open Circuit Voltage U₂	21.9 V
Max. Output Current Iₐ max	40 mA
Output Internal Resistance R	287 Ω
Switching Delay ON/OFF	≤ 20 ms
Switching Delay OFF/ON	≤ 20 ms
Output Settling Time	20 ms
Output State Indicator	LED yellow "STAT"

Environmental Conditions

Parameter	Value
Ambient Temperature	-40 °C ... 60 °C (-40 °F ... +140 °F)
Storage Temperature	-40 °C ... 80 °C (-40 °F ... +176 °F)
Max. Relative Humidity	10 ... 95%
Usage at Altitude	< 2000 m
Electromagnetic Compatibility	EN 61326-1 Industrial Environment; Immunity according to EN 61000-6-2; Radiated emissions according to EN 61000-6-4

Mechanical Data

Parameter	Value
Protection Rating (IP)	IP30
Protection Rating (IP) Terminals	IP20
Flame Retardancy (UL 94)	VO
Housing Material	Polyamide
Grid Dimension	12.5 mm
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

Mounting Type: DIN rail NS35/15, NS35/7.5

Installation Position: Vertical, Horizontal

Connection Type

Screw terminal

Conductor Cross-Section

Parameter	Value
Solid conductor min.	0.2 mm²
Solid conductor max.	2.5 mm²
Flexible conductor min.	0.2 mm²
Flexible conductor max.	2.5 mm²
Conductor Cross-Section AWG	24 ... 14

Technical Drawings

Ex Area vs. Safe Area Diagram

A diagram illustrates the separation between the Ex area and the safe area, showing the intrinsically safe circuit (1) connected to the output and the input (2) receiving the control signal. The diagram indicates voltage and current relationships.

Dimensional Drawing

A dimensional drawing provides the overall dimensions of the unit in millimeters and inches, including width, height, and length. It also references compatible R. STAHL ISpac series modules.

Output Characteristic Curve

A graph shows the output characteristic curve for the 9276/10-21-40, plotting output current (Iₐ [mA]) against output voltage (Uₐ [V]). It indicates the open-circuit voltage of 21.9 V and a maximum output current of 40 mA.

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