R. STAHL Isolators: Loop-powered binary output
Ex i field circuit
Model: 9176/20-15-00k | Art. No. 222181
The R. STAHL Series 9176 binary outputs transmit binary signals for the intrinsically safe operation of Ex i solenoid valves, indicator lamps, and horns. These devices are powered by the control circuit, eliminating the need for a separate auxiliary power supply. The intrinsically safe outputs are galvanically separated from the inputs. Two-channel variants offer space savings and feature galvanically separated channels.
- Suitable for solenoid valves and signaling devices
- Two-channel variants reduce the amount of space required
- No need for a separate auxiliary power supply
Technical Data
Explosion Protection
| Application range (zones) | 2, 0, 1, 2, 20, 21, 22 |
|---|---|
| Ex interface zone | IECEx BVS 13.0012 X |
| IECEx gas explosion protection | Ex nA [ia Ga] IIC T4 Gc |
| IECEx dust certificate | IECEx BVS 13.0012 X |
| IECEx dust explosion protection | [Ex ia Da] IIIC |
| ATEX gas certificate | BVS 04 ATEX E 075 X |
| ATEX gas explosion protection | II 3 (1) G Ex nA [ia Ga] IIC T4 Gc |
| ATEX dust certificate | BVS 04 ATEX E 075 X |
| ATEX dust explosion protection | II (1) D [Ex ia Da] IIIC |
| FMUS certificate | FM16US0122X |
| CFM certificate | FM16CA0067X |
| Marking cFMus | 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 |
| Certificates | ATEX (BVS), Brazil (ULB), Canada (FM), China (NEPSI), IECEx (BVS), Korea (KTL), SIL (exida), USA (FM) |
| Ship approval | CCS, EU RO MR (DNV) |
| Declaration of conformity | ATEX (EUK), China (CCC) |
Safety Data
| Max. voltage Uo | 27.6 V |
|---|---|
| Max. current I (Ex ia) | 86.5 mA |
| Max. current I (Ex ib) | 44 mA |
| Max. power Po | 596 mW |
| Max. permissible external capacity Co for IIC | 0.085 µF |
| Max. permissible external inductance Lo for IIC | 1.8 mH |
| Max. permissible external capacity Co for IIB | 0.667 µF |
| Max. permissible external inductance Lo for IIB | 17 mH |
| Internal capacitance | 1.1 nF |
| Internal inductance | Negligible |
| Max. voltage Uo parallel | 27.6 V |
| Max. power Po parallel | 1192 mW |
| Max. current Io (Ex ia) paral. | 173 mA |
| Max. current Io (Ex ib) paral. | 88 mA |
| Internal capacitance parallel | 2.2 nF |
| Internal inductance parallel | negligible |
| Safety-related max. voltage | 253 V |
| Intrinsically safe limiting values inductance L / capacitance C | Max. connectable inductance L / capacitance Co: 2 parallel channels |
| IIC | L: 2.5 mH, C: 2.500 mF |
| IIB | L: 2.5 mH, C: 0.665 µF |
| IIIC | L: 2.500 mH, C: 0.665 µF |
Electrical Data
| Number of channels | 2 |
|---|---|
| Internal resistance R | 320 Ω |
| Auxiliary power | without |
| Auxiliary power consumption | 0.5 W + (I x 37 mW/mA) |
| Polarity reversal protection | Yes |
Galvanic Isolation
| Test voltage as per standard | EN IEC 60079-11 |
|---|---|
| Ex i input to Ex i input | 500 V AC |
| Test voltage as per standard | EN 50178 |
| Input to input | 350 V AC |
Input
| Input | In accordance with EN 61131-2 |
|---|---|
| Input voltage for ON | 18 - 31.2 V |
| Input voltage for OFF | 0 - 5 V |
| Control Power PE | 0.5 W + (IA x 37 mW/mA) (with IA = max. required output current) |
Output
| Output open-circuit voltage U₂ | 25 V |
|---|---|
| Max. output current Iₐ max | 29 mA |
| Max. output current I note | Parallel channels: 58 mA |
| Internal resistance R₁ note | 320 Ω/parallel: 160 Ω |
| Output residual ripple | < 100 mV |
| Output switching frequency | ≤ 10 Hz |
| Switching delay ON/OFF | ≤ 50 ms |
| Switching delay OFF/ON | ≤ 18 ms |
| Switching state indication | Yellow "OUT" LED |
Output Characteristic Diagram
The diagram shows the output characteristic curve for the 9176/.0-15-00. Curve A represents the characteristic for each channel, while Curve B represents the characteristic for channel 1 in parallel channel 2 configurations (for types 9176/20-...). The x-axis represents current in mA, and the y-axis represents voltage in V. The curves are shown for an ambient temperature of -20 to +60 °C.
Ambient Conditions
| Ambient temperature | -20 °C ... 70 °C (Single device) -20 °C ... 60 °C (Group assembly) |
|---|---|
| Ambient temperature | -4 °F ... +158 °F (Single device) -4 °F ... +140 °F (Group assembly) |
| Storage temperature | -40 °C ... 80 °C -40 °F ... +176 °F |
| Maximum relative humidity | 95% |
| Use at the height of | < 2000 m |
| Electromagnetic compatibility | Tested to the following standards and regulations: EN 61326-1 For use in industrial areas; NAMUR NE 21 |
Mechanical Data
| Degree of protection (IP) | IP30 |
|---|---|
| Degree of protection (IP) terminals | IP20 |
| Fire resistance (UL 94) | VO |
| Enclosure material | Polyamide |
| Grid dimension | 17.6 mm |
| Width | 17.6 mm |
| Width, inches | 0.69 in |
| Height | 114.5 mm |
| Height in inches | 4.51 in |
| Length | 128 mm |
| Length in inches | 5.04 in |
| Weight | 180 g |
| Weight | 0.4 lb |
Mounting / Installation
| Mounting orientation | Horizontal Vertical |
|---|---|
| Connection type | Spring clamp terminal |
| Min. rigid conductor cross section | 0.2 mm² |
| Max. rigid conductor cross section | 2.5 mm² |
| Min. flex conductor cross section | 0.2 mm² |
| Max. flex conductor cross section | 2.5 mm² |
| Connection cross-section AWG | 24 ... 14 |
Technical Drawings - Subject to Alterations
The diagram illustrates the hazardous and safe area classifications, showing Division 1, Zone 0/1 in the hazardous area and Division 2, Zone 2 in the safe area. It depicts the connection between a Field Device, an ISpac Isolator, and a Control System.
The dimensional drawings provide overall dimensions in millimeters and inches for the device, including length, width, and height.
Accessories
| Description | Art. No. |
|---|---|
| Transparent cover for 91xx ISpac modules. Yellow, transparent. Clear identification of the device for SIL applications. (Packaging unit: 10 pieces) | 200914 |
Spare Parts
Screw terminal
| Description | Art. No. |
|---|---|
| 3-pole plug, screw connector thread: M3 stripping length: 7 mm colour: green |
112817 |
| 3-pole plug, screw connector thread: M3 stripping length: 7 mm colour: black |
112816 |
| 3-pole plug, screw connector thread: M3 stripping length: 7 mm colour: blue |
112818 |
Screw terminal with test tap
| Description | Art. No. |
|---|---|
| 3-pole plug with test tap, screw connector thread: M3 stripping length: 7 mm colour: black |
113005 |
| 3-pole plug with test tap, screw connector thread: M3 stripping length: 7 mm colour: blue |
113004 |
Spring clamp terminal
| Description | Art. No. |
|---|---|
| 3-pole plug with test tap, spring clamp connection stripping length: 10 mm colour: green |
112825 |
| 3-pole plug with test tap, spring clamp connection stripping length: 10 mm colour: black |
112824 |
| 3-pole plug with test tap, spring clamp connection stripping length: 10 mm colour: blue |
112826 |
R. STAHL reserves the right to make alterations to the technical data, dimensions, weights, designs, and products available without notice. The illustrations cannot be considered binding.
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