R. STAHL 9180/11-77-11s Ex i ISpac Resistance Isolator
Product Number: 160499
Product Overview
The R. STAHL 9180/11-77-11s ISpac resistance isolator is designed for intrinsically safe operation of resistance thermometers (Pt100 or Pt1000). It is the world's only two-channel device with a channel width of only 8.8 mm, suitable for 2, 3, and 4-wire circuits. The measured resistance at the input is transmitted to the output and can be read by an I/O card. Auxiliary power, output, and intrinsic safety input are electrically isolated.
Technical Characteristics
Explosion Protection
| Domain of Application (Zones) | 2 |
|---|---|
| Ex Zone Interface | IECEx BVS 10.0055 X |
| IECEx Gas Explosion Protection | Ex ec nC [ia Ga] IIC T4 Gc |
| IECEx Dust Explosion Protection | [Ex ia Da] IIIC |
| ATEX Gas Explosion Protection | II 3 (1) G Ex ec nC [ia Ga] IIC T4 Gc |
| ATEX Dust Explosion Protection | II (1) D [Ex ia Da] IIIC |
| FM Approval | FM16US0122X |
| cFM Approval | FM16CA0067X |
| CFMus Marking | Class I, Div. 2, Groups A,B,C,D; Class I, Zone 2, AEx/Ex nA nC 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 at Ta = 70°C |
| Certificates | ATEX (BVS), Brazil (ULB), Canada (FM), China (NEPSI), Korea (KTL), USA (FM), IECEx (BVS), India (Peso) |
| Marine Approval | CCS, EU RO MR (DNV) |
| Conformity Certificate | ATEX (EUK), China (CCC) |
Safety Values
| Maximum Voltage U_i | 6.5 V |
|---|---|
| Maximum Current I_i | 16.5 mA |
| Maximum Power P_i | 27 mW |
| Max. External Capacitance C_a for IIC | 25 μF |
| Max. External Inductance L_a for IIC | 120 mH |
| Max. External Capacitance C_a for IIB | 570 μF |
| Max. External Inductance L_a for IIB | 450 mH |
| Max. External Capacitance C_a for IIIC | 570 μF |
| Max. External Inductance L_a for IIIC | 450 mH |
| Internal Capacitance | Negligible |
| Internal Inductance | Negligible |
| Maximum Technical Safety Voltage | 253 V |
Intrinsic Safety Limit Values (Inductance L / Capacitance C)
| Group | L_o [mH] | C_o [µF] |
|---|---|---|
| IIC | 50 mH | 1.100 µF |
| IIB | 100 mH | 5.300 µF |
| IIIC | 100 mH | 5.300 µF |
Electrical Characteristics
| Number of Channels | 1 |
|---|---|
| LFD Relay | Yes |
| Measurement Range | 180 ... 391 Ω |
| Auxiliary Supply Voltage | 24 V DC |
| Nominal Voltage | 24 V DC |
| Auxiliary Supply Voltage Range | 18 ... 31.2 V |
| Residual Ripple for Voltage Range | ≤ 3.6 Vss |
| Nominal Current | 27 mA |
| Power Consumption | 0.65 W |
| Maximum Dissipated Power | 0.6 W |
| Reverse Polarity Protection | Yes |
| Undervoltage Monitoring | Yes |
| Operation Indicator | Green LED "PWR" |
Electrical Separation
| Test Voltage According to Standard | EN IEC 60079-11 |
|---|---|
| Ex i Input to Output | 1.5 kV AC |
| Ex i Input to Auxiliary Supply | 1.5 kV AC |
| Ex i Input to Error Signaling Contact | 1.5 kV AC |
| Test Voltage According to Standard | EN 50178 |
| Output to Auxiliary Supply | 350 V AC |
| Output to Output | 350 V AC |
| Error Signaling Contact to Auxiliary Supply | 350 V AC |
| Error Signaling Contact to Output | 350 V AC |
Input
| Setting Switch | DIP Switch |
|---|---|
| Average Resolution at Input | 0.2 Ω |
| Resistance Thermometer Input | Pt 1000 |
| RTD Input Connection Type | 2, 3, 4-wire connection |
| 2-Wire Setting Comparison | Adjustable via DIP switch |
| Ionization Current for RTD | 200 µA ... 0.5 mA |
| Max. Line Resistance per RTD Conductor | 50 Ω (2-wire circuit) / 100 Ω (3, 4-wire circuit) |
Output
| Output Signal | Input signal equal (resistance value) |
|---|---|
| RTD Output Connection Type | 2, 3, 4-wire connection |
| Output Stabilization Time | < 10 ms |
| Output Stabilization Time | < 1 s |
| Ionization Current Range | 200 µA ... 0.5 mA |
| DL Switch Setting | Activated/Deactivated |
| Wire Break Error Detection | > 3940 ohms |
| Short Circuit Error Detection | < 160 ohms |
| Output Behavior for Line Fault | > 10 kΩ |
| Line Fault Indication | Red LED "LF" |
| Error Signaling Contact Switching Capacity | 30 V / 100 mA |
| Line Fault Message and Auxiliary Supply Cut-off | Contact (30 V / 100 mA), connected to ground in case of error; Bus pac, potential-free contact (30 V / 100 mA) |
| Divergence / Error Notification | Indication in % of measurement range (20 mA) at UN, 23 °C |
| Average Measurement Error | < 0.1% |
| Temperature Influence | ≤ 0.1%/10K |
Ambient Conditions
| Ambient Temperature (Single Device) | -20 °C ... +70 °C |
|---|---|
| Ambient Temperature (Group Installation) | -20 °C ... +60 °C |
| Ambient Temperature (Single Device) | -4°F ... +158°F |
| Ambient Temperature (Group Installation) | -4°F ... +140°F |
| Note | Installation conditions affect ambient temperature. Please observe the "Installation Instructions - Control Cabinet". |
| Storage Temperature | -40 °C ... +80 °C |
| Storage Temperature | -40°F ... +176°F |
| Maximum Relative Humidity | 950% (No condensation formation) |
| Altitude of Use | < 2000 m |
| Pollution Degree | 2 |
| Electromagnetic Compatibility | Complies with standards and directives: EN 61326-1, use in industrial environments; NAMUR NE 21 |
Mechanical Characteristics
| Protection Rating (IP) | IP30 |
|---|---|
| Protection Rating (IP) Pins | IP20 |
| Fire Resistance (UL 94) | V0 |
| Housing Material | Polyamide |
| Connection Terminal Size | 0.2-2.5 mm² flexible; Ferruled 0.25-2.5 mm²; 0.2-2.5 mm² rigid |
| Pitch | 17.6 mm |
| Width | 17.6 mm (0.69 in) |
| Height | 114.5 mm (4.51 in) |
| Length | 108 mm (4.25 in) |
| Mounting Depth (inches) | 4.51 in |
| Weight | 160 g (0.35 lb) |
Mounting / Installation
| Mounting Type | DIN rail NS35/15, NS35/7.5 |
|---|---|
| Mounting Position | Vertical or Horizontal |
| Connection Type | Screw terminal |
| Rigid Conductor Size Min. | 0.2 mm² |
| Rigid Conductor Size Max. | 2.5 mm² |
| Flexible Conductor Size Min. | 0.2 mm² |
| Flexible Conductor Size Max. | 2.5 mm² |
| AWG Connection Size | 24 ... 14 |
Technical Drawings (Subject to modification)
Hazardous Area
- Division 1, Zone 0/1
- Field Device
Safe Area
- Division 2, Zone 2
- 24 V DC
- ISpac Isolator
- Control System
Wiring Diagram 9180/..-77-11
- Input Configuration, Channel 1, 2-wire: Resistance thermometers / resistance transmitters
- Input Configuration, Channel 1, 3-wire: Resistance thermometers / resistance transmitters
- Input Configuration, Channel 1, 4-wire: Resistance thermometers / resistance transmitters
- Output Configuration, Channel 1, 2-wire: 9180/.1-77-11
- Output Configuration, Channel 1, 3-wire: 9180/.1-77-11
- Output Configuration, Channel 1, 4-wire: 9180/.1-77-11
Overall Dimensions (all dimensions in mm [inches])
A diagram showing the external dimensions of the device is provided, with measurements for width, height, and depth.
Accessories
| Item | Description | Part No. |
|---|---|---|
| Transparent Cover | For ISpac 91xx modules (Yellow, Transparent). Precise device marking for SIL applications. (Packaging unit: 10 pieces) | 200914 |
Spare Parts
| Item | Description | Part No. |
|---|---|---|
| Screw Terminal | 3-pole plug, screw connection. Thread: M3. Stripping length: 7 mm. Color: Black. | 112816 |
| Screw Terminal | 3-pole plug, screw connection. Thread: M3. Stripping length: 7 mm. Color: Blue. | 112818 |
| Screw Terminal | 3-pole plug, screw connection. Thread: M3. Stripping length: 7 mm. Color: Green. | 112817 |
| Screw Terminal with Control Tap | 3-pole plug with control tap, screw connection. Thread: M3. Stripping length: 7 mm. Color: Blue. | 113004 |
| Screw Terminal with Control Tap | 3-pole plug with control tap, screw connection. Thread: M3. Stripping length: 7 mm. Color: Black. | 113005 |
Subject to modification of technical characteristics, dimensions, weights, construction types, and delivery options. Figures are for indicative purposes only.
