Publicité
GB
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
Evaluation and supply circuit
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:
Soldo
P +F
Code
switches code
SI_20
NJ4-12GK-N
SI_24
NJ2-12GK-N
SI_59
NCB2-12GK35-N0
SI_61 NCN4-12GK35-N0
1b) Device category 2GD, EX identification
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:
Soldo
P +F
Code
switches code
SI_28
NJ2-11N-G
SI_30 NCB2-12GM35-N0
SI_36
NJ5-11-N-G
SI_37 NCN4-12GM35-N0
SI_39
NJ2-12GK-SN
SI_50
NJ2-11SN-G
SI_60
SJ-3.5-N
SI_62
SJ-3.5-SN
SI_63
SJ-3.5-S1N
SI_68
NJ5-11-N
SI_69
NJ2-11-N
SI_70
NJ2-V3-N
SI_84
NJ2-11-SN
SI_86
NJ4-12GK-SN
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.
ns. rif:
SI003-033
Safety instruction to hazardous area installation
II 2 G EEx ia IIC T6
Type Intrinsic Safety
Type 1
Type 2
U
=
16 V
U
=
16 V
=
=
=
=
i
i
i
i
i
i
I
= 25 mA
I
= 25 mA
i
i
P
= 34 mW
P
= 64 mW
i
i
Type 1
C
L
i
i
i
i
i
i
(nF)
(?H)
T6
T5
45
50
73
88
45
50
73
88
90 100
76
91
95 100
73
88
II 2 G/D EEx ia IIC T6
Type 1
C
L
i
i
i
i
i
i
(nF)
(?H)
T6
T5
30
50
76
91
90 100
76
91
45
50
72
87
95 100
76
91
50 150
73
88
50 150
76
91
50 250
73
88
30 100
73
88
30 100
73
88
45
50
72
87
45
50
73
88
40
50
73
88
50 150
73
88
70 150
73
88
Max value
Type 3
Type 4
U
=
16 V
U
=
16 V
=
=
=
=
i
i
i
i
i
i
I
= 52 mA
I
= 76 mA
i
i
P
= 169 mW P
= 242 mW
i
i
Type 2
Type 3
Maximum permissibile ambient temperature
in C° for application in temperature class
T4
T6
T5
T4
T6
100
69
84
100
51
100
69
84
100
51
100
73
88
100
62
100
69
84
100
51
Type 2
Type 3
Maximum permissibile ambient temperature
in C° for application in temperature class
T4
T6
T5
T4
T6
100
73
88
100
62
100
73
88
100
62
100
65
80
100
42
100
73
88
100
62
100
69
84
100
51
100
73
88
100
62
100
66
81
100
45
100
66
81
100
45
100
66
81
100
45
100
65
80
100
42
100
66
81
100
45
100
66
81
100
45
100
66
81
100
45
100
69
84
100
51
Type 4
T5
T4
T6
T5
T4
66
80
39
54
61
66
80
39
54
61
77
81
54
63
63
66
80
39
54
61
Type 4
T5
T4
T6
T5
T4
77
81
54
63
63
77
81
54
63
63
57
82
26
41
63
77
81
54
63
63
66
80
39
54
61
77
81
54
63
63
60
89
30
45
74
60
89
30
45
74
60
89
30
45
74
57
82
26
41
63
60
89
30
45
74
60
89
30
45
74
60
89
30
45
74
66
80
39
54
61
Pag. 3 of 22
Publicité
