Sartorius Combics 2 CAIXS2 - Connection of an Analog Weighing Platform; Connection of a Digital Weighing Platform

146 Operating Instructions Combics CAIXS2
Verification of Intrinsic Safety
Verification of
Intrinsic Safety
CAIXS2 /
Rev. 00
Klausgrete2013-08-08
Sheet
of
3
8
66015-751-60
Ui 13 V
Ii 425 mA
Pi 2.0 W
Ci 4 nF
Li 6 µH
Sensor cable for weighing platform
Functionality requires cables with a low resistance rating.
Recommended: LiYCY 6x...² with 700µH/km maximum, 130nF/km maximum
(wire versus wire) and 170nF/km maximum (wire vs. ground) can be installed
flexibly up to lengths of 500m.
The 6-wire cable, type PR6136, (Lmax = 1.1 mH/km; Cmax = 220nF/km; Rmin
= 26 ohms/km) can be used up to 500m.
For cables longer than 50m, the screen (shield) of the cable may not be
connected to the housing of the weighing platform, or the weighing platform and
the indicator must be connected with limited resistivity (e.g., by connecting to an
equipotential grounding busbar).
Connection of an Analog Weighing Platform
CAPXS.-......-....
IUXS4-......-....., IFXS4-......-.....
Weighing platform
II 2 GD EEx ib IIC T4 T155°C
Zone 1, 2, 21, 22
Gas: IIC T4
Dust: IIIC
CAIXS2
II 2 G Ex ib IIC T4 Gb
II 2 D Ex ib IIIC T80°C Db
Uo = 11.8 V
Io = 147 mA
Po = 1.49 W
Co = 900 nF
Lo = 300 µH
Verification of
Intrinsic Safety
CAIXS2 /
Rev. 00
Klausgrete2013-08-08
Sheet
of
4
8
66015-751-60
Connection of a Digital Weighing Platform
Note:
1: Per circuit
2: Combined circuits
3: Versus ground
4: Between the signal lines
5: SIWXSBB.-3-06-H.. and ISXBB.-3-06-H.. models may not be used in zone 21
and zone 22
*: Resistively limited
Commercially available shielded cables up
to 20 m can be used (e.g., LiYCY).
CAIXS2
II 2 G Ex ib IIC T4 Gb
II 2 D Ex ib IIIC T80°C Db
RS232 parameters (A/J/K/N/M)
2)
Ui 12.6 V
3)
/ 25,2 V
4)
Uo 10,0 V
3)
/ 20,0 V
4)
Ii 328 mA* Io 101 mA*
Pi any Po 253 mW
Ci 2,2 nF
3)
/ 0.5nF
4)
Co 3 µF
3)
217nF
4)
Li 0 mH Lo 3 mH
L0/Ro 140 µH/
RS485 parameters (J/K/M)
2)
Ui see table 1 Uo 5.2 V
Ii see table 1 Io 210 mA***
Pi any Po 263 mW
Ci 260 nF Co 78 µF
Li 0 mH Lo 600 µH
Lo/Ro 125 µH/
WP Board
Zone 1, 2, 21, 22
Gas: IIC T4
Dust: IIIC
ISX...-..-.....
5)
II 2 G Ex ib IIC T4 Gb
II 2 D Ex ib IIIC T80°C Db
RS232 or RS485
Data interface
Table 1 (Rmin = Ui / Ii)
Ui ±12.4V 12.0V 6.0V
Ii 130 mA*** 164mA*** any
Rmin 95
73 ---
RS232 parameters (A/J/K/N/M or 1/2/3/4/5/6 of J102)
2)
Ui 12.6 V
3)
/ 25.2 V
4)
Uo 10.8 V
3)
/ 21.6 V
4)
Ii 328 mA* Io 110 mA*
Pi any Po 295 mW
Ci 3nF
3)
/ 0.5nF
4)
Co 2.1 µF
3)
174nF
4)
Li 0 mH Lo 2 mH
L0/Ro 120 µH/
RS485 parameters (J/K/M or 1/2/3 of J101)
2)
Ui see table 1 Uo 5.4 V
Ii see table 1 Io 74 mA*
Pi any Po 183 mW
Ci 260 nF Co 50 µF
Li 0 mH Lo 600 µH
Lo/Ro 135 µH/
(max.150m/mm
2
)