R. STAHL Galvanic Isolators: Binary Output without Auxiliary Power Supply, Ex i Field Circuit
Model: 9176/20-16-00s | Article No.: 222184
Product Overview
The R. STAHL 9176A series binary outputs 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 intrinsically safe outputs are electrically isolated from the inputs. Two-channel variants feature electrically separated channels.
- Suitable for solenoid valves and signaling devices.
- Two-channel variants reduce space requirements.
- No separate auxiliary power supply required.
Technical Characteristics
Explosion Protection
| Application Area (Zones) | 0, 1, 2, 20, 21, 22 |
| Interface Ex Zone | IECEx BVS 13.0012 X |
| IECEx Protection Against Explosion of Gas | Ex nA [ia Ga] IIC T4 Gc |
| Certificates | IECEx BVS 13.0012 X, BVS 04 ATEX E 075 X, FM16US0122X, FM16CA0067X, CCS, EU RO MR (DNV), ATEX (EUK), China (CCC) |
| Certificates for Gas Explosion Protection | [Ex ia Da] IIIC |
| Certificates for Dust Explosion Protection | II 3 (1) G Ex nA [ia Ga] IIC T4 Gc |
| ATEX Protection Against Explosion of Gas | II (1) D [Ex ia Da] IIIC |
| ATEX Protection Against Explosion of Dust | 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 |
| Marine Approval | CCS, EU RO MR (DNV) |
Safety Values
| Maximum Voltage Uo | 27.6 V |
| Maximum Current Io (Ex ia) | 110 mA |
| Maximum Current Io (Ex ib) | 50 mA |
| Maximum Power Po | 760 mW |
| Max. External Capacitance Co for IIC | 0.085 μF |
| Max. External Inductance Lo for IIC | 1.2 mH |
| Max. External Capacitance Co for IIB | 0.667 μF |
| Max. External Inductance Lo for IIB | 9 mH |
| Internal Capacitance | 1.1 nF |
| Internal Inductance | Negligible |
| Max. Parallel Voltage Uo | 27.6 V |
| Max. Parallel Power Po | 1520 mW |
| Max. Parallel Current Io (Ex ia) | 220 mA |
| Max. Parallel Current Io (Ex ib) | 100 mA |
| Parallel Internal Capacitance | 2.2 nF |
| Parallel Internal Inductance | Negligible |
| Maximum Technical Safety Voltage | 253 V |
Intrinsically Safe Limit Values (Inductance L / Capacitance C) for Connection
| Inductance L / Capacitance C Connectable | ||
| 2 Channels in Parallel | ||
| IIC | L. [mH]: 1.8 mH C. [μF]: 0.665 μF |
L. [mH]: 1.800 mH C. [μF]: 0.665 μF |
Electrical Characteristics
| Number of Channels | 2 |
| Internal Resistance R | 250 Ω |
| Auxiliary Power Supply | None |
| Power Consumption of Auxiliary Supply | 0.5 W + (I x 37 mW/mA) |
| Reverse Polarity Protection | Yes |
| Electrical Isolation | |
| Test Voltage (according to standard) Input Ex i to Input Ex i | EN IEC 60079-11, 500 V AC |
| Test Voltage (according to standard) Input to Input | EN 50178, 350 V AC |
Input
| Input (according to EN 61131-2) | |
| Input Voltage for ON | 18 – 31.2 V |
| Input Voltage for OFF | 0 – 5 V |
Output
| Control Power PE | 0.5 W + (IA x 37 mW / mA) (with IA = required max. output current) |
| Output Voltage at No Load Uo | 25 V |
| Maximum Output Current Ia | 35 mA |
| Maximum Output Current Ia (Parallel Channels) | 70 mA |
| Output Internal Resistance R | 250 ohms / Parallel: 125 ohms |
| Output Residual Ripple | < 100 mV |
| Output Switching Frequency | ≤ 10 Hz |
| Switching Delay ON/OFF | ≤ 50 ms |
| Switching Delay OFF/ON | ≤ 18 ms |
| Switching Status Indication | Yellow LED "OUT" |
Output Characteristic Curve
The output characteristic curve for models 9175/.0-16-11 and 9176/.0-16-00 is provided. Curve A represents the characteristic per channel, and Curve B represents the characteristic for 1 parallel channel (for types 9176/20-...).
Graph Description: The graph displays current (I [mA]) on the x-axis and voltage (U [V]) on the y-axis. The x-axis ranges from 0 to 45 mA, and the y-axis ranges from 0 to 25 V. Curve A shows a characteristic for a single channel, while Curve B shows a characteristic for two parallel channels.
Ambient Conditions
| Ambient Temperature (Single Device) | -20 °C ... +70 °C (-4 °F ... +158 °F) |
| Ambient Temperature (Group Assembly) | -20 °C ... +60 °C (-4 °F ... +140 °F) |
| Note on Ambient Conditions | Installation conditions influence ambient temperature. Refer to "Installation Instructions - Control Cabinet". |
| Storage Temperature | -40 °C ... +80 °C (-40 °F ... +176 °F) |
| Maximum Relative Humidity | 95% |
| Altitude Use | < 2000 m |
| Electromagnetic Compatibility | Complies with standards and directives: EN 61326-1, use in industrial sector; NAMUR NE 21 |
Mechanical Characteristics
| Degree of Protection (IP) | IP30 |
| Degree of Protection (IP) Pins | IP20 |
| Fire Resistance (UL 94) | V0 |
| Enclosure Material | Polyamide |
| Pitch | 17.6 mm (0.69 in) |
| Width | 17.6 mm (0.69 in) |
| Height | 114.5 mm (4.51 in) |
| Length | 108 mm (4.25 in) |
| Weight | 185 g (0.41 lb) |
| Mounting / Installation | Rail DIN NS35/15, NS35/7.5 |
| Mounting Position | Vertical, Horizontal |
| Connection Type | Screw Terminal |
| Rigid Conductor Cross-Section (Min.) | 0.2 mm² |
| Rigid Conductor Cross-Section (Max.) | 2.5 mm² |
| Flexible Conductor Cross-Section (Min.) | 0.2 mm² |
| Flexible Conductor Cross-Section (Max.) | 2.5 mm² |
| AWG Connection Cross-Section | 24 ... 14 |
Accessories
| Transparent Cover for ISpac 91xx Modules (Yellow, Transparent) | Art. No. 200914 (Packaging unit: 10 pieces) |
Spare Parts
Screw Terminals
| 3-pole plug, screw connection, M3 thread, 7 mm stripping length, green color | Art. No. 112817 |
| 3-pole plug, screw connection, M3 thread, 7 mm stripping length, black color | Art. No. 112816 |
| 3-pole plug, screw connection, M3 thread, 7 mm stripping length, blue color | Art. No. 112818 |
Screw Terminals with Control Contact
| 3-pole plug with control contact, screw connection, M3 thread, 7 mm stripping length, black color | Art. No. 113005 |
| 3-pole plug with control contact, screw connection, M3 thread, 7 mm stripping length, blue color | Art. No. 113004 |
Spring Terminals
| 3-pole plug with control contact, spring terminal, 10 mm stripping length, green color | Art. No. 112825 |
| 3-pole plug with control contact, spring terminal, 10 mm stripping length, black color | Art. No. 112824 |
| 3-pole plug with control contact, spring terminal, 10 mm stripping length, blue color | Art. No. 112826 |
Subject to technical modifications, dimensions, weights, construction types, and delivery possibilities. Figures are for illustrative purposes only.
