Isolator Barriers - Resistance Isolator

Ex i field circuit ISpac 9180/11-77-11s

Art. No.: 160499

Product Overview

The R. STAHL 9180A ISpac series resistance isolators are designed for the intrinsically safe operation of Pt100 or Pt1000 resistance temperature detectors. This two-channel device offers a compact design, requiring only 8.8 mm of space per channel, and supports two-, three-, and four-conductor connections. 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.

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

Technical Data

Explosion Protection

Parameter	Value
Application range (zones)	0, 1, 2, 20, 21, 22
Ex interface zone	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

Parameter	Value
Max. voltage U｡/V_OC	6.5 V
Max. current I_o/I_sc	16.5 mA
Max. power P_o	27 mW
Max. permissible external capacitance C_a/C_o for IIC	25 μF
Max. permissible external inductance L_a/L_o for IIC	120 mH
Max. permissible external capacitance C_a/C_o for IIB	570 μF
Max. permissible external inductance L_a/L_o 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_o	Jointly connectable inductance L/capacitance C_o
	L_o [mH]	C_o [µF]	L_o [mH]	C_o [µF]	L_o [mH]	C_o [µF]	L_o [mH]	C_o [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

Parameter	Value
Number of channels	1
LFD relay	Yes
Measuring range	180 to 3910 Ω
Auxiliary Power
Auxiliary power	24 V DC
Nominal voltage V_nom	24 V DC
Auxiliary power voltage range	18 ... 31.2 V
Voltage range residual ripple	≤ 3,6 V_SS
Nominal current	27 mA
Power consumption	0.65 W
Max. power dissipation	0.6 W
Polarity reversal protection	Yes
Undervoltage monitoring	Yes
Operation indication	Green "PWR" LED

Galvanic Isolation

Parameter	Value
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

Parameter	Value
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 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 ... 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
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	Information in % of the measuring range (20 mA) at U_N, 23 °C
Average measurement fault	< 0.1%
Temperature influence	≤ 0.1%/10K

Ambient Conditions

Parameter	Value
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

Parameter	Value
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	17.6 mm
Width	17.6 mm (0.69 in)
Height	114.5 mm (4.51 in)
Length	108 mm (4.25 in)
Mounting depth in inches	4.51 in
Weight	160 g (0.35 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

A connection diagram illustrates the isolator barrier's integration between a hazardous location (Zone 0/1, Division 1) and a non-hazardous location (Zone 2, Division 2). The diagram shows the field device connecting to the ISpac isolator, which then connects to the control system via a pac-Bus and 24 V DC auxiliary power. The diagram details terminal connections for input, output, and auxiliary power, including specific pin assignments (e.g., 1+, 2-, 3+, 4-, 7++, 8--, 9--, 10, 11, 12, 13).

Dimensional Drawings

The dimensional drawings provide a detailed view of the isolator barrier's physical dimensions in millimeters and inches. Key dimensions include:

Overall height: 114.5 mm (4.51 in)
Overall width: 17.6 mm (0.69 in)
Overall length: 108 mm (4.25 in)
Mounting depth: 122 mm (4.80 in)
Specific internal dimensions are also detailed.

These drawings are subject to alteration and apply to the ISpac series including models 9143, 9146, 9147, 9160, 9162, 9163, 9165, 9167, 9170, 9172, 9175, 9176, 9180, 9182, 9193, and ISbus Series 9412 with screw terminals.

Accessories

Transparent Cover

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

Spare Parts

Screw terminal

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

Screw terminal with test tap

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

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