Isolator Barriers

Resistance isolator

Ex i field circuit ISpac

9180/20-77-11k Art. No. 160495

Key Features

Ex i resistance isolator 9180/.0 for Pt100 or 9180/.1 for Pt1000
World's only two-channel device requiring just 8.8 mm of space per channel
For two-, three- and four-conductor connection

The 9180 series Ex i resistance isolators are used for the intrinsically safe operation of Pt100 (9180/.0) or Pt1000 (9180/.1) resistance temperature detectors. The resistance measured at the input is transmitted to the output and can be measured by an I/O card. The auxiliary power, output, and intrinsically safe input are galvanically separated.

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

Ship approval	CCS, EU RO MR (DNV)
Declaration of conformity	ATEX (EUK), China (CCC)

Safety Data

Max. voltage U｡/V｡	6.5 V
Max. current I｡/I｡	16.5 mA
Max. power P｡	27 mW
Max. permissible external capacitance C/C, for IIC	25 μF
Max. permissible external inductance L/L, for IIC	120 mH
Max. permissible external capacitance C/C, for IIB	570 μF
Max. permissible external inductance L/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｡
	L｡ [mH]	C｡ [µF]	L｡ [mH]	C｡ [µF]	L｡ [mH]	C｡ [µF]	L｡ [mH]	C｡ [µF]
IIC	50 mH	1.100 μF	5 mH	1.700 μF	1 mH	2.300 μF	0.200 mH	3.400 μF
IIB	100 mH	5.300 μF	20 mH	6.900 μF	2 mH	11 μF	0.500 mH	1.500 μF
IIIC	100 mH	5.300 μF	20 mH	6.900 μF	2 mH	11 μF	0.500 mH	1.500 μF

Electrical Data

Number of channels	2
LFD relay	Yes
Measuring range	18 to 391 Ω

Auxiliary Power

Auxiliary power	24 V DC
Nominal voltage V｡｡	24 V DC
Auxiliary power voltage range	18 ... 31.2 V
Voltage range residual ripple	≤ 3,6 V SS
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	0.02 Ω
Input for resistance temperature detector	Pt 100
Connection type RTD input	2-, 3- and 4-wire circuits
2-conductor adjustment	Via ADJ DIP switch
Sensor current RTD	≤ 0.25 mA
Max. line resistance per wire RTD	50 Ω (2-wire connection) 100 Ω (3-, 4-wire connection)

Output

Output signal	Equals 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 ... 5 mA
LF switch user adjustment	Activated/deactivated
Wire breakage error detection input	> 394 ohm
Short circuit error detection input	< 16 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 signalization	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 °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%
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
Grid dimension	17.6 mm
Width	17.6 mm
Width, inches	0.69 in
Height	114.5 mm
Length	128 mm
Length in inches	5.04 in
Mounting depth in inches	4.51 in
Weight	180 g
Weight	0.4 lb

Mounting / Installation

Mounting type	DIN rail NS35/15, NS35/7.5
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

Connection Diagram 9180/20-77-11

A diagram showing the input and output connections, including hazardous and non-hazardous locations, pac-Bus, and 24V DC connections.

Dimensional Drawings (All Dimensions in mm [inches]) – Subject to Alterations

A diagram illustrating the physical dimensions of the isolator barrier.

Accessories

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

Spare Parts

Spring clamp terminal	Art. No.
3-pole plug with test tap, spring clamp connection stripping length: 10 mm color: blue	112826
3-pole plug with test tap, spring clamp connection stripping length: 10 mm color: green	112825
3-pole plug with test tap, spring clamp connection stripping length: 10 mm color: black	112824

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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