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SCHEDULE
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to EC-Type Examination Certificate DEKRA 12ATEX0162 X
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Description
The intrinsically safe weighing units type SIWXS...-3-..-... and SIWXS...-3-V... (with display) and
type ISX...-..-... and ISX...-V... (without display) can have an enclosure of type BB or DC, which
both can be made of stainless steel or painted aluminum.
All enclosures provide a degree of protection of IP6X, except for the enclosure of weighing unit
type SIWXSBBP-3-06-H.., ISXBBP-06-H.., SIWXSBBP-3-V1.. and ISXBBP-V1.. (600 grams
range).
As an option all models can be equipped with an internal motor calibration device to lay an
internal weight down on the system by a motor to calibrate the scale.
Ambient temperature range: -10 ° C to +40 ° C.
Electrical data
Supply circuit (permanently connected cable):
in type of protection intrinsic safety Ex ib IIC or Ex ib IIIC, only for connection to a certified
intrinsically safe circuit, with the following maximum values:
V_1 (pin 2 and 6): U
V_2 (pin 1 and 4): U
V_3 (pin 5 and 8): U
V_4 (pin 3 and 7): U
Power Supply Type YPS02-.X.. (Certificate KEMA 98ATEX0892 X), Power Supply Type YPS02-
Z.. (Certificate KEMA 98ATEX0611X) and Power Supply Type YPSC01-X and YPSC01-Z
(Certificate KEMA 08ATEX0044) may be applied to fulfil these maximum electric values.
Dependent on the internal construction, the weighing unit communicates either via RS232,
RS485 or RS422 protocol.
RS485 circuit (Data Interface Connector, pins J/K/M):
in type of protection intrinsic safety Ex ib IIC or Ex ib IIIC, only for connection to a certified
intrinsically safe circuit, with the following maximum values:
U
± 12,4 V
i
I
130 mA ***
i
***: resistively limited
P
= any; C
= 0.23 μF; L
i
i
U
= 5,2 V; I
= 210 mA; P
o
o
RS422 circuit (Data Interface Connector, all pins):
in type of protection intrinsic safety Ex ib IIC or Ex ib IIIC, only for connection to a certified
intrinsically safe circuit, with the following maximum values:
U
= 8,6 V; I
= 210 mA; P
i
i
U
= 5,2 V; I
= 290 mA; P
o
o
= 12,6 V; I
= 133 mA; P
= 1,46 W; C
i
i
i
= 12,6 V; I
= 133 mA; P
= 1,46 W; C
i
i
i
= 8,6 V;
I
= 187 mA; P
= 1,51 W; C
i
i
i
= 12,6 V; I
= 150 mA; P
= 1,68 W; C
i
i
i
12,0 V
7,2V
164 mA ***
Any
= 0 mH;
i
= 263mW; C
= 60μF; L
o
o
= 0,5 W; C
= 0,5 μF; L
i
i
i
= 496 mW; C
= 60 μF; L
o
o
= 188 nF; L
= 0,0 mH;
i
i
= 3 nF;
L
= 0,0 mH;
i
i
= 391 nF; L
= 0,0 mH;
i
i
= 223 nF; L
= 0,1 mH.
i
i
= 0.6 mH; L
/R
= 125 μH/Ω;
o
o
o
= 0 mH;
= 0,3 mH; Lo/Ro = 50 μH/Ω.
o
Certificate
Issue No. 2
Page 2/3
Form 100
Version 5 (2013-07)
Signum 3 Ex
107
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