R. STAHL 9176A Isolator Barriers
Loop-powered binary output for Ex i field circuits
Model: 9176/20-16-00k Art. No.: 222185
Product Overview
The R. STAHL 9176A series isolator barriers provide binary outputs for intrinsically safe operation of Ex i solenoid valves, indicator lamps, or horns. These devices are powered by the control circuit and do not require a separate auxiliary power supply. The intrinsically safe outputs are galvanically separated from the inputs. Two-channel variants feature galvanically separated channels.
- Suitable for solenoid valves and signaling devices
- Two-channel variants reduce space requirements
- No need for a separate auxiliary power supply
Certifications: Ex SIL, IEC 61508, IEC 61511
Technical Data
Explosion Protection
| Application range (zones) | 2 |
| Ex interface zone | 0, 1, 2, 20, 21, 22 |
| IECEX gas certificate | 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 |
| FM 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 T4 Mounting vert. at Ta = 70°C, or horizontal Ta = 60°C |
| Certificates | CCS, EU RO MR (DNV) ATEX (EUK), China (CCC) |
| Ship approval | CCS, EU RO MR (DNV) |
| Declaration of conformity | ATEX (EUK), China (CCC) |
Safety Data
| Max. voltage Uo/Voc | 27.6 V |
| Max. current Io (Ex ia) | 110 mA |
| Max. current Io (Ex ib) | 50 mA |
| Max. power Po | 760 mW |
| Max. permissible external capacitance C/C for IIC | 0.085 μF |
| Max. permissible external inductance L/La for IIC | 1.2 mH |
| Max. permissible external capacitance C/C for IIB | 0.667 μF |
| Max. permissible external inductance L/La for IIB | 9 mH |
| Internal capacitance | 1.1 nF |
| Internal inductance | Negligible |
| Max. voltage Uo parallel | 27.6 V |
| Max. power Po parallel | 1520 mW |
| Max. current Io (Ex ia) paral. | 220 mA |
| Max. current Io (Ex ib) paral. | 100 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: 1.8 mH, C: 0.665 μF |
| IIB | L: 1.8 mH, C: 0.665 μF |
| IIIC | L: 1.800 mH, C: 0.665 μF |
Electrical Data
| Number of channels | 2 |
| Internal resistance R | 250 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 I = max. required output current) |
Output
| Output open-circuit voltage U₂ | 25 V |
| Max. output current Ia max | 35 mA |
| Max. output current I note | Parallel channels: 70 mA |
| Internal resistance R₁ note | 250 Ω/parallel: 125 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
9175/.0-16-11; 9176/.0-16-00 output characteristic
A graph shows the relationship between output current (I [mA]) and voltage. The X-axis represents current from 0 to 45 mA. The Y-axis represents voltage. Curve A shows the characteristic for each channel, and Curve B shows the characteristic for channel 1 and parallel channel 2 for types 9176/20-..-...
Ambient Conditions
| Ambient temperature °C | -20 °C ... 70 °C (Single device) -20 °C ... 60 °C (Group assembly) |
| Ambient temperature °F | -4 °F ... +158 °F (Single device) -4 °F ... +140 °F (Group assembly) |
| Note | The installation conditions affect the ambient temperature. Observe the "Cabinet installation guide". |
| Storage temperature °C | -40 °C ... 80 °C |
| Storage temperature °F | -40 °F ... +176 °F |
| Max. 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) | V0 |
| 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
Connection diagram 9176/10-..-..
A diagram shows a hazardous location and a non-hazardous location. The hazardous location contains a "Field Device" and an "ISpac Isolator". The non-hazardous location contains a "Control System". The connection shows input and output lines between the isolator and the field device, and between the isolator and the control system.
Connection diagram 9176/20-..-..-..
A similar diagram illustrates the connection for a two-channel isolator. It shows "Field Device" and "ISpac Isolator" in the hazardous location, and "Control System" in the non-hazardous location. Connections are shown for two channels, with inputs and outputs clearly labeled.
Dimensional Drawings
A diagram provides the dimensions of the unit in millimeters and inches. Key dimensions include height (114.5 mm / 4.51 in), width (17.6 mm / 0.69 in), and length (128 mm / 5.04 in). It also indicates compatibility with various ISpac modules and Fieldbus Power Supply units.
Accessories
Transparent cover
| For 91xx ISpac modules | Art. No.: 200914 |
| Yellow, transparent | Clear identification of the device for SIL applications. (Packaging unit: 10 pieces) |
Spare Parts
Screw terminal
| 3-pole plug, screw connector (green) | Art. No.: 112817 |
| 3-pole plug, screw connector (black) | Art. No.: 112816 |
| 3-pole plug, screw connector (blue) | Art. No.: 112818 |
Screw terminal with test tap
| 3-pole plug with test tap, screw connector (black) | Art. No.: 113005 |
| 3-pole plug with test tap, screw connector (blue) | Art. No.: 113004 |
Spring clamp terminal
| 3-pole plug with test tap, spring clamp connection (green) | Art. No.: 112825 |
| 3-pole plug with test tap, spring clamp connection (black) | Art. No.: 112824 |
| 3-pole plug with test tap, spring clamp connection (blue) | Art. No.: 112826 |
