Soldo Controls SIF Series, Manual

ns. rif: 

SI003-033

GB 

Safety instruction to hazardous area installation 

Model numbers covered: limit switch box series SI_ _ _ _ _ _-_  ( _ indicates options in housing configuration, switches, 
switches quantity, terminal strip, box colour, cable entries). 
The following instructions apply to equipment covered by ATEX certificate number  

03ATEX 135107X

1) 

The SI   limit switch box series may be used in an hazardous area with flammable gases, vapours, dust and mist, group 

IIC, protection mode EEx ia with the following temperature classes T4,T5,T6. 

1a) Device category 2G, EX identification 

 II 2 G EEx ia IIC T6 

Evaluation and supply circuit                           Type Intrinsic Safety              Max value 

Type 1 

Type 2 

Type 3 

Type 4 

U

i

i

i

 =

=

= 

16 V

U

i

i

i

 =

=

= 

16 V

U

i

i

i

 =

=

= 

16 V

U

i

i

i

 =

=

= 

16 V

I

i 

 =  25 mA 

I

i 

 =  25 mA 

I

i 

 =  52 mA 

I

i 

 =  76 mA 

P

i

 = 34 mW   P

i

 = 64 mW   P

i

 = 169 mW   P

i

 = 242 mW  

The assignment of the type of the connected circuit to the maximum permissible temperature and the temperature class 
as well as the effective internal reactances for the individual types of limit switch boxes are shown in the following table: 

Type 1 

Type 2 

Type 3 

Type 4 

Maximum permissibile ambient temperature  

in C° for application in temperature class 

Soldo 
Code 

P +F  

switches code 

C

i

i

i

(nF) 

L

i

i

i

(?H) 

T6 

T5 

T4 

T6 

T5 

T4 

T6 

T5 

T4 

T6 

T5 

T4 

SI_20 

NJ4-12GK-N 

45  50 

73 

88  100  69 

84  100  51 

66  80 

39 

54  61 

SI_24 

NJ2-12GK-N 

45  50 

73 

88  100  69 

84  100  51 

66  80 

39 

54  61 

SI_59  NCB2-12GK35-N0  90  100  76 

91  100  73 

88  100  62 

77  81 

54 

63  63 

SI_61  NCN4-12GK35-N0  95  100  73 

88  100  69 

84  100  51 

66  80 

39 

54  61 

1b) Device category 2GD, EX identification 

 II 2 G/D EEx ia IIC T6 

The assignment of the type of the connected circuit to the maximum permissible temperature and the temperature class 
as well as the effective internal reactances for the individual types of limit switch boxes are shown in the following table: 

Type 1 

Type 2 

Type 3 

Type 4 

Maximum permissibile ambient temperature  

in C° for application in temperature class 

Soldo 
Code 

P +F  

switches code 

C

i

i

i

(nF) 

L

i

i

i

(?H) 

T6 

T5 

T4 

T6 

T5 

T4 

T6 

T5 

T4 

T6 

T5 

T4 

SI_28 

NJ2-11N-G 

30  50 

76 

91  100  73 

88  100  62 

77  81 

54 

63  63 

SI_30  NCB2-12GM35-N0  90  100  76 

91  100  73 

88  100  62 

77  81 

54 

63  63 

SI_36 

NJ5-11-N-G 

45  50 

72 

87  100  65 

80  100  42 

57  82 

26 

41  63 

SI_37  NCN4-12GM35-N0  95  100  76 

91  100  73 

88  100  62 

77  81 

54 

63  63 

SI_39 

NJ2-12GK-SN 

50  150  73 

88  100  69 

84  100  51 

66  80 

39 

54  61 

SI_50 

NJ2-11SN-G 

50  150  76 

91  100  73 

88  100  62 

77  81 

54 

63  63 

SI_60 

SJ-3.5-N 

50  250  73 

88  100  66 

81  100  45 

60  89 

30 

45  74 

SI_62 

SJ-3.5-SN 

30  100  73 

88  100  66 

81  100  45 

60  89 

30 

45  74 

SI_63 

SJ-3.5-S1N 

30  100  73 

88  100  66 

81  100  45 

60  89 

30 

45  74 

SI_68 

NJ5-11-N 

45  50 

72 

87  100  65 

80  100  42 

57  82 

26 

41  63 

SI_69 

NJ2-11-N 

45  50 

73 

88  100  66 

81  100  45 

60  89 

30 

45  74 

SI_70 

NJ2-V3-N 

40  50 

73 

88  100  66 

81  100  45 

60  89 

30 

45  74 

SI_84 

NJ2-11-SN 

50  150  73 

88  100  66 

81  100  45 

60  89 

30 

45  74 

SI_86 

NJ4-12GK-SN 

70  150  73 

88  100  69 

84  100  51 

66  80 

39 

54  61 

Cross the temperature rating shown with the limit switch box rating shown in limit switch box installation & operating 
manual. 

2) 

Suitably trained personnel shall carry out installation in accordance with applicable code of practice 

3) 

The user should not repair this equipment. 

4) 

If the equipment is likely to come into contact with aggressive substances, it is responsibility of the user to take suitable 

precautions that prevent it from being adversely affected, thus ensuring that the type of protection is not compromised. 

Agressive substances – es. Acidic liquids or gases that may attack the switch box housing. 

5) 

The following precaution must be observed: 

The metallic alloy used for the enclosure, in the event of a rare accident, could cause ignition sources due to impact or 

friction (sparks may occur). This shall be considered when the box is installed in group II category 2 G/D areas. 

Pag. 3 of 22