HAZARDOUS (CLASSIFIED) LOCATION NON-HAZARDOUS LOCATION
CLASS I, DIVISION 1, GROUPS A, B, C, D or 8
CLASS II, DIVISION 1, GROUPS E, F, G CLASS I, DIVISION 2, GROUPS A, B, C, D
CLASS III, DIVISION 1
Any Simple Apparatus 2 or approved device with
Entity Concept parameters 1 (Vmax, Imax, Ci, Li) 3
1 7
appropriate for connection to Associated
Apparatus with Entity Concept parameters listed in 2 8
Table 1. 3 ifm electronic 9
4
Switch Isolators 10
4
Any Simple Apparatus 2 or approved device with See Table 1 5
Entity Concept parameters 1 (Vmax, Imax, Ci, Li) 5 11
appropriate for connection to Associated
6 12
Apparatus with Entity Concept parameters listed in
Table 1.
1 (4)
NAMUR OUTPUT PROXIMITY SENSOR 2 (5) 5
3 (6)
1 (4)
CONTACT CLOSURE WITHOUT R1(a)
2 (5) 5
LEAD BREAK OR SHORT CIRCUIT 6 3 (6)
MONITORING
1 (4)
CONTACT CLOSURE WITH 6 2 (5) 5
LEAD BREAK MONITORING 3 (6)
CONTACT CLOSURE WITH 1 (4)
6
LEAD BREAK AND SHORT 2 (5) 5
CIRCUIT MONITORING 3 (6)
NOTES:
1 The Entity Concept allows interconnection of intrinsically safe and associated apparatus not specifically examined in combination as a system when
the approved values of Voc and Isc for the associated apparatus are less than or equal to Vmax and Imax for the intrinsically safe apparatus and the
approved values of Ca and La for the associated apparatus are greater than Ci + Ccable, Li + Lcable, respectively for the intrinsically safe apparatus.
2 "Simple Apparatus" is defined as a device that will neither generate nor store more than 1.2 V, 0.1 A, 20 uJ or 25 mW.
3 Wiring methods must be in accordance with the National Electrical Code, ANSI / NFPA 70, Article 504 and ANSI / ISA-RP12.6.
4 Barriers shall not be connected to any device that uses or generates in excess of 250 V rms or DC unless it has been determined that the voltage is
adequately isolated from the barrier.
5 Single channel models use either input terminals 1, 2 & 3 or 4, 5 & 6.
6 When the field devices are contact closures, resistors R1 and R2 (when applicable) must be connected as shown in the diagrams above for proper
performance. R2 should be as close as possible to the contact closure. R2 must be ≥ 400 Ω and ≤ 2 kΩ, and R1 must be 10 kΩ ± 5%. Note, resistor
R1(a) is integrated in most N0 barriers and is activated by the S1b / S2b slide switches (slide switch S3 in others).
7 Any combination of up to 10 channels of the barriers listed in Table 1 may be connected in parallel and connected to a simple apparatus in a hazar-
dous location. R2, if used, must be rated 0.25 W minimum if 2-3 channels are connected in parallel and 0.5 W minimum if 4-10 channels are
connected in parallel. If 2-3 channels are connected in parallel the total cable inductance must be limited to 10 mH for Groups A and B, 37 mH for
Groups C and E, and 80 mH for Groups D, F and G. If 4-10 channels are connected in parallel the total cable inductance must be limited to 1 mH for
Groups A and B, 3.8 mH for Groups C and E, and 7 mH for Groups D, F and G.
8 The barriers must be installed in an exclosure meeting the requirements of ANSI / ISA S82.
Table 1: Entity Parameters 7 8
Model Numbers Terminals Voc (V) Isc (mA) Groups Ca (µF) La (mH)
A, B 1.273 84.8
N0030A 5
N0032A 1-3, 2-3
N0532A 12.9 19.8 C, E 3.820 254.4
N0531A 4-6, 5-6
N0534A
D, F, G 10.18 678.4
07/03
Product Part No. Title
Sachnr. 701791/00
Installation Drawing for
THIS DRAWING CONTAINS PROPRIETARY DATA. NO
FM Approved Transformer
Revisions
DISCLOSURE, REPRODUCTION OR USE OF ANY PART
MAY BE MADE EXCEPT BY WRITTEN PERMISSION.
Isolated Barriers and Sensors
0 9-26-02 C. A. ifm electronic gmbh Repl.No. Draw.
In. Date Cons. Resp. Appr. Friedrichstr. 1 • D 45128 Essen - No. 2002.1.0402 Sh. 1 of 1
HAZARDOUS (CLASSIFIED) LOCATION NON-HAZARDOUS LOCATION
CLASS I, ZONE 0 OR 1, GROUPS IIC, IIB, IIA or 9
CLASS I, ZONE 2, GROUPS IIC, IIB, IIA or
CLASS I, DIVISION 1, GROUPS A, B, C, D
CLASS I, DIVISION 2, GROUPS A, B, C, D
CLASS II, DIVISION 1, GROUPS E, F, G
CLASS III, DIVISION 1
1 7
Switch, Non-inductive resistive device, 1 7
or any CSA Certified Entity device. 2 8
ifm electronic 2
3 9
4
Switch Isolators 10
6
See Tables 1 / 2 8
5 3 11
Switch, Non-inductive resistive device,
or any CSA Certified Entity device. 6 12
1 (4)
NAMUR OUTPUT PROXIMITY SENSOR 2 (5) 3
3 (6)
1 (4)
CONTACT CLOSURE WITHOUT R1 3
2 (5)
LEAD BREAK OR SHORT CIRCUIT 3 (6) 4
MONITORING
1 (4)
CONTACT CLOSURE WITH 2 (5)
3
LEAD BREAK MONITORING 3 (6) 4
CONTACT CLOSURE WITH 1 (4)
3
LEAD BREAK AND SHORT 2 (5)
CIRCUIT MONITORING 3 (6) 4
NOTES:
1 The intrinsically safe wiring must be installed in accordance with the Canadian Electrical Code CSA C22.1, Part 1, Appendix F.
2 Barriers listed in Table 1 shall not be connected to any device that uses or generates in excess of 250 V rms or DC unless it has been determined that
the voltage is adequately isolated from the barrier. Barriers listed in Table 2 shall not be connected to any device that uses or generates in excess of
60 V rms or DC unless the voltage is limited by an adequate means.
3 Single channel models use input terminals 4, 5 and 6 only.
4 When the field devices are contact closures, resistors R1 and R2 must be connected as shown in the diagrams above for proper performance. R2
should be as close as possible to the contact closure. R2 must be ≥ 400 Ω and ≤ 2 kΩ, and R1 must be 10 kΩ ± 5%.
5 Any combination of up to 10 channels of the barriers listed in Table 1 or Table 2 may be connected in parallel and connected to a switch in a hazar-
dous location. R2, if used, must be rated 0.25 W minimum if 2-3 channels are connected in parallel and 0.5 W minimum if 4-10 channels are
connected in parallel
6 WARNING: Substitution of components may impair intrinsic safety an / or suitability for use in Class I, Division 2, Groups A, B, C, D or Class I, Zone 2,
Groups IIC, IIB, IIA.
ADVERTISSEMENT: La substitution de composants peut compromettre la sécurité intrinsèque.
7 The Entity Concept allows interconnection of intrinsically safe and associated apparatus not specifically examined in combination as a system when
the approved values of Voc and Isc for the associated apparatus are less than or equal to Vmax and Imax for the intrinsically safe apparatus and the
approved values of Ca and La for the associated apparatus are greater than Ci + Ccable, Li + Lcable, respectively for the intrinsically safe apparatus.
8 Connection to ground is not required.
9 The following models with part number greater than 100000 are approved for mounting in Class I, Zone 2, Groups IIC, IIB, IIA or Class I, Division 2,
Groups A, B, C, D hazardous (classified) location: N05..A.
Table 1: Barriers Certified to CSA Standard C22.2 No. 157 (Um = 250 V)
SYSTEM ENTITY
Model Numbers Terminals Ca (µF) GRPS La (mH) GRPS
3 Vmax (V) Res. (Ω) Voc (V) Isc (mA)
A, B C, E D,F,G A, B C, E D,F,G
1-3
N0030A 2-3 12.6 650 12.9 19.8
N0032A 1.273 3.820 10.18 84.88 298.7 744.4
4-6
5-6
Table 2: Barriers Certified to CSA Standard E79-11 (Um = 60 V)
Load Parameters
Terminals
Model Numbers Co (µF) GRPS Lo (mH) GRPS
3 Uo (Voc) Io (Isc)
IIC (A, B) IIB (C, E) IIA (D,F,G) IIC (A, B) IIB (C, E) IIA (D,F,G)
N0532A 1-3
N0531A 2-3 10.5 13.0 2.66 7.9 21.3 192 671 1000
N0534A 4-6
5-6
No changes without prior permission
CSA Title
Installation Drawing for
THIS DRAWING CONTAINS PROPRIETARY DATA. NO
DISCLOSURE, REPRODUCTION OR USE OF ANY PART
CSA Certified Switch Isolators
Revisions MAY BE MADE EXCEPT BY WRITTEN PERMISSION.
0 9-26-02 C. A. . ifm electronic gmbh Repl.No. Draw.
In. Date Cons. Resp. Appr. Friedrichstr. 1 • D 45128 Essen - No. 2002.1.0403 Sh. 1 of 1
