R. STAHL 9176A/20-15-00k Galvanic Isolator: Ex i Field Circuit Output

Product Overview

The R. STAHL 9176A series binary output isolators provide binary signals for the operation of Ex i solenoid valves, indicator lamps, or sirens. These devices do not require a separate auxiliary power supply as they are powered by the control circuit. The intrinsic safety outputs are electrically separated from the inputs. Two-channel variants feature electrical channel separation.

Suitable for solenoid valves and signaling devices
Space-saving two-channel variants
No separate auxiliary power supply required

Technical Characteristics

Explosion Protection

Application (zones)	0, 1, 2, 20, 21, 22
Ex zone interface	IECEx BVS 13.0012 X
IECEx gas explosion protection	Ex nA [ia Ga] IIC T4 Gc
IECEx dust explosion protection	[Ex ia Da] IIIC
ATEX gas explosion protection	BVS 04 ATEX E 075 X; II 3 (1) G Ex nA [ia Ga] IIC T4 Gc
ATEX dust explosion protection	BVS 04 ATEX E 075 X; II (1) D [Ex ia Da] IIIC
FM16US0122X	FM16CA0067X
cFM Marking	Class I, Div. 2, Groups A,B,C,D; Class I, Zone 2, 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 Mounting vert. at Ta = 70°C, or horizontal Ta = 60°C (See Doc. 91 76601 31 1)
Certifications	ATEX (BVS), Brazil (ULB), Canada (FM), China (NEPSI), Korea (KTL), USA (FM), IECEx (BVS), SIL (exida)
Marine approval	CCS, EU RO MR (DNV)
Declaration of conformity	ATEX (EUK), China (CCC)

Safety Values

Maximum voltage Uo	27.6 V
Maximum current Io (Ex ia)	86.5 mA
Maximum current Io (Ex ib)	44 mA
Maximum power Po	596 mW
Max. external capacitance Co for IIC	0.085 µF
Max. external inductance Lo for IIC	1.8 mH
Max. external capacitance Co for IIB	0.667 µF
Max. external inductance Lo for IIB	17 mH
Internal capacitance	1.1 nF
Internal inductance	Negligible
Maximum voltage Uo parallel	27.6 V
Maximum power Po parallel	1192 mW
Max. current Io (Ex ia) parallel	173 mA
Max. current Io (Ex ib) parallel	88 mA
Internal capacitance parallel	2.2 nF
Internal inductance parallel	Negligible
Maximum safety technical voltage	253 V
Intrinsic safety limit values inductance L / capacitance Co (2 channels in parallel)	IIC: L: 2.5 mH, C: 0.665 µF; IIB: L: 2.500 mH, C: 0.665 µF

Electrical Characteristics

Number of channels	2
Internal resistance R	320 Ω
Auxiliary power supply	None
Power consumption of auxiliary supply	0.5 W + (I x 37 mW/mA)
Reverse polarity protection	Yes
Electrical separation
Test voltage according to standard (Ex i to Ex i input)	EN IEC 60079-11; 500 V AC
Test voltage according to standard (Input to input)	EN 50178; 350 V AC
Input	According to EN 61131-2
Input voltage for SWITCH ON	18–31.2 V
Input voltage for SWITCH OFF	0–5 V

Output Characteristics

Output voltage at no load Uv	25 V
Maximum output current Ia	29 mA
Maximum output current Ia (parallel channels)	58 mA
Internal resistance R	320 ohms / parallel: 160 ohms
Output residual ripple	< 100 mV
Output switching frequency	≤ 10 Hz
Switch-on delay / SWITCH OFF	≤ 50 ms
Switch-off delay / SWITCH ON	≤ 18 ms
Switching status indication	Yellow LED "OUT"

Output Characteristic Curve 9176/.0-15-00

The diagram shows output current [mA] on the X-axis and voltage [V] on the Y-axis. Curve A represents the characteristic per channel, and Curve B represents the characteristic for 1 parallel channel 2 (for types 9176/20-...). The operating temperature range is -20 °C to +60 °C.

Ambient Conditions

Ambient temperature (single device)	-20 °C ... 70 °C
Ambient temperature (group assembly)	-20 °C ... 60 °C
Ambient temperature (single device, Fahrenheit)	-4 °F ... +158 °F
Ambient temperature (group assembly, Fahrenheit)	-4 °F ... +140 °F
Note on ambient conditions	Installation conditions affect ambient temperature. Refer to "Installation Instructions - Control Cabinet".
Storage temperature	-40 °C ... 80 °C (-40 °F ... +176 °F)
Maximum relative humidity	95%
Operation at altitude	< 2000 m
Electromagnetic compatibility	Complies with standards and directives: EN 61326-1, industrial sector use; NAMUR NE 21

Mechanical Characteristics

Degree of protection (IP)	IP30
Degree of protection (IP) for plug/socket contacts	IP20
Fire resistance (UL 94)	VO
Enclosure material	Polyamide
Pitch	17.6 mm (0.69 in)
Width	17.6 mm (0.69 in)
Length	128 mm (5.04 in)
Weight	180 g (0.4 lb)
Mounting / Installation	DIN rail NS35/15, NS35/7.5
Mounting position	Horizontal or vertical
Connection type	Spring terminal
Minimum conductor cross-section (solid)	0.2 mm²
Maximum conductor cross-section (solid)	2.5 mm²
Minimum conductor cross-section (flexible)	0.2 mm²
Maximum conductor cross-section (flexible)	2.5 mm²
Conductor cross-section AWG	24 ... 14

Technical Drawings (subject to modification)

Hazardous area vs. Safe area

Diagram shows a simplified block representation of the isolator, separating a 'Field Device' in a hazardous area (Division 1, Zone 0/1) from a 'Control System' in a safe area (Division 2, Zone 2). It indicates 'active' connections for both the field device and the control system, with an 'ISpac Isolator' in between.

Outline Drawing (dimensions in mm [inches])

The outline drawing shows the physical dimensions of the isolator, with a length of 114.5 mm [4.51 in] and a width of 17.6 mm [0.69 in]. It also indicates compatibility with various ISpac series and IBus series modules.

Accessories

Description	Part No.
Transparent cover for ISpac 91xx modules (yellow, transparent) - Precise device marking for SIL applications (packaging unit: 10 pieces)	200914

Spare Parts

Screw terminal

Description	Part No.
3-pole plug, screw connection, M3 thread, 7 mm stripping length, green	112817
3-pole plug, screw connection, M3 thread, 7 mm stripping length, black	112816
3-pole plug, screw connection, M3 thread, 7 mm stripping length, blue	112818

Screw terminal with control tap

Description	Part No.
3-pole plug with control tap, screw connection, M3 thread, 7 mm stripping length, black	113005
3-pole plug with control tap, screw connection, M3 thread, 7 mm stripping length, blue	113004

Spring terminal

Description	Part No.
3-pole plug with control tap, spring terminal, 10 mm stripping length, green	112825
3-pole plug with control tap, spring terminal, 10 mm stripping length, black	112824
3-pole plug with control tap, spring terminal, 10 mm stripping length, blue	112826

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