R. STAHL 9180A Series Ex i Resistance Isolator

Article No.: 160502

Model: 9180/21-77-11s

Product Overview

The R. STAHL Series 9180 Ex i resistance isolators are designed for the intrinsically safe operation of Pt100 (9180/.0) or Pt1000 (9180/.1) resistance temperature detectors. The measured resistance at the input is transmitted to the output and can be read by an I/O card. The auxiliary power, output, and intrinsically safe input are galvanically separated. This device is noted as the only two-channel device in the world requiring just 8.8 mm of space per channel and supports 2-, 3-, and 4-wire connections.

Technical Data

Explosion Protection

Application range (zones)	2
Ex interface zone	0, 1, 2, 20, 21, 22
IECEx gas certificate	IECEx BVS 10.0055 X
IECEx gas explosion protection	Ex ec nC [ia Ga] IIC T4 Gc
IECEx dust certificate	IECEx BVS 10.0055 X
IECEx dust explosion protection	[Ex ia Da] IIIC
ATEX gas certificate	BVS 05 ATEX E 176 X
ATEX gas explosion protection	II 3 (1) G Ex ec nC [ia Ga] IIC T4 Gc
ATEX dust certificate	BVS 05 ATEX E 176 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, 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	See Doc. 9180 6 031 001 1
Ship approval	ATEX (BVS), Brazil (ULB), Canada (FM), China (NEPSI), IECEx (BVS), India (PESO), Korea (KTL), USA (FM)
Declaration of conformity	CCS, EU RO MR (DNV); ATEX (EUK), China (CCC)

Safety Data

Max. voltage U	6.5 V
Max. current I	16.5 mA
Max. power P	27 mW
Max. permissible external capacity C, for IIC	25 μF
Max. permissible external inductance L, for IIC	120 mH
Max. permissible external capacity C, for IIB	570 μF
Max. permissible external inductance L, for IIB	450 mH
Max. perm. ext. capacit. IIIC	570 μF
Max. permis. ext. induct. IIIC	450 mH
Internal capacitance	Negligible
Internal inductance	Negligible
Safety-related max. voltage	253 V
Intrinsically safe limiting values inductance L/capacitance C	Jointly connectable inductance L/capacitance C
	IIC (L: 50 mH, C: 1.100 μF)	(L: 5 mH, C: 1.700 μF)	(L: 1 mH, C: 2.300 μF)	(L: 0.200 mH, C: 3.400 μF)
IIB (L: 100 mH, C: 5.300 μF)	(L: 20 mH, C: 6.900 μF)	(L: 2 mH, C: 11 μF)	(L: 0.500 mH, C: 1.500 μF)
IIIC (L: 100 mH, C: 5.300 μF)	(L: 20 mH, C: 6.900 μF)	(L: 2 mH, C: 11 μF)	(L: 0.500 mH, C: 1.500 μF)

Electrical Data

Number of channels	2
LFD relay	Yes
Measuring range	180 to 3910 Ω

Auxiliary Power

Auxiliary power	24 V DC
Nominal voltage	24 V DC
Auxiliary power voltage range	18 ... 31.2 V
Voltage range residual ripple	≤ 3,6 VSS
Nominal current	37 mA
Power consumption	0.89 W
Max. power dissipation	0.72 W
Polarity reversal protection	Yes
Undervoltage monitoring	Yes
Operation indication	Green "PWR" LED

Galvanic Isolation

Test voltage as per standard	EN IEC 60079-11
Ex i input to output	1.5 kV AC
Ex i input to auxiliary power	1.5 KV AC
Ex i input to fault message contact	1.5 KV AC
Test voltage as per standard	EN 50178
Output to auxiliary power	350 V AC
Output to output	350 V AC
Fault message contact to auxiliary power	350 V AC
Fault message contact to output	350 V AC

Input

Sensor adjustment	DIP switch
Medium-resolution input	0.2 Ω
Input for resistance temperature detector	Pt 100 / Pt 1000
Connection type RTD input	2-, 3- and 4-wire circuits
2-conductor adjustment	Via ADJ DIP switch
Sensor current RTD	200 μA ... 0.5 mA
Max. line resistance per wire RTD	50 Ω (2-wire connection); 100 Ω (3-, 4-wire connection)

Output

Output signal	Equals to input signal (resistance value)
Connection type RTD output	2-, 3- and 4-wire circuits
Settling time output	< 10 ms
Response time output	< 1 s
Sensor current range	200 μA ... 0.5 mA
LF switch user adjustment	Activated/deactivated
Wire breakage error detection input	> 3940 ohm
Short circuit error detection input	< 160 ohm
Behaviour of output during LF	> 10 kΩ
Line fault indication	Red "LF" LED
Fault message contact switching capacity	30 V / 100 mA
Line fault and loss of power signalisation	Contact (30 V/100 mA), closed against earth in case of error - pac-Bus, potential-free contact (30 V/100 mA)

Deviations / Error Note

Average measurement fault	< 0.1%
Temperature influence	≤ 0.1%/10K

Ambient Conditions

Ambient temperature	-20 °C ... +70 °C (Single device); -20 °C ... +60 °C (Group assembly)
Ambient temperature (Fahrenheit)	-4°F ... +158°F (Single device); -4°F ... +140°F (Group assembly)
Note	Installation conditions influence the ambient temperature. Please observe the "Cabinet installation guide".
Storage temperature	-40 °C ... +80 °C
Storage temperature (Fahrenheit)	-40°F ... +176°F
Maximum relative humidity	95%
Max. additional relative humidity	No condensation
Use at the height of	< 2000 m
Overvoltage category	II
Degree of pollution	2
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
Connection cross-section	0.2 to 2.5 mm² flexible; 0.25 to 2.5 mm² flexible with core end sleeve; 0.2 to 2.5 mm² rigid
Grid dimension	17.5 mm
Width	17.5 mm (0.69 in)
Height	114.5 mm
Length	108 mm (4.25 in)
Mounting depth in inches	4.51 in
Weight	180 g (0.4 lb)

Mounting / Installation

Mounting type	DIN rail NS35/15, NS35/7.5
Mounting orientation	Vertical / Horizontal
Connection type	Screw 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

Diagrams illustrate hazardous area connections (Zone 0/1, Division 1) and safe area connections (Zone 2, Division 2) for various input and output configurations, including 2-, 3-, and 4-wire RTD connections. The diagrams show the ISpac isolator, pac-Bus, and field device connections.

Input Configuration Examples:

Channel 1, 2-wire resistance temperature detector/potentiometer (9180/..-77-11)
Channel 2, 2-wire resistance temperature detector/potentiometer (9180/2.-77-11)
Channel 1, 3-wire resistance temperature detector/potentiometer (9180/..-77-11)
Channel 2, 3-wire resistance temperature detector/potentiometer (9180/2.-77-11)
Channel 2, 4-wire resistance temperature detector/potentiometer (9180/2.-77-11)

Output Configuration Examples:

Channel 1, 2-wire (9180/.1-77-11)
Channel 2, 3-wire (9180/.1-77-11)
Channel 2, 2-wire (9180/21-77-11)
Channel 2, 3-wire (9180/21-77-11)
Channel 1, 4-wire (9180/.1-77-11)
Channel 2, 4-wire (9180/21-77-11)

A note indicates that connecting two sensors using 4-wire technology requires an additional external terminal X1.

Dimensional Drawings:

Dimensions are provided in millimeters and inches for the overall device, including height (114.5 mm [4.51 in]), length (108 mm [4.25 in]), and width (17.6 mm [0.69 in]).

Accessories

Transparent cover

Description	For 91xx ISpac modules; Yellow, transparent; Clear identification of the device for SIL applications. (Packaging unit: 10 pieces)	Art. No.	200914

Spare Parts

Screw terminal

Description	3-pole plug, screw connector; thread: M3; stripping length: 7 mm; colour: black	Art. No.	112816
Description	3-pole plug, screw connector; thread: M3; stripping length: 7 mm; colour: blue	Art. No.	112818
Description	3-pole plug, screw connector; thread: M3; stripping length: 7 mm; colour: green	Art. No.	112817

Screw terminal with test tap

Description	3-pole plug with test tap, screw connector; thread: M3; stripping length: 7 mm; colour: blue	Art. No.	113004
Description	2-pole plug with test tap, screw connector; thread: M3; stripping length: 7 mm; colour: black	Art. No.	113005

Disclaimer

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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