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Installation Instructions for the
Wireless Hazardous Area Limit Switches, WBX Series
5
DIAGRAMS
5.1
Connection Diagrams for Remote
Antenna Configuration
Figure 1 – WBX Connected to Remote Antenna
WBX
Limit
Switch
Zones 0, 20/1, 21, IIC, IIIC, Ga, Da
Uo = 5.0 V
Io = 757 mA
Po = 0.946 W
Co = 23.48 µF
Lo = 4.487 µH
Figure 2 – WBX Connected to Remote Antenna
Lightning Arrestor
WBX
Limit
RF Cable B
Switch
Zones 0, 20/1, 21, IIC, IIIC, Ga, Da
Uo = 5.0 V
Io = 757 mA
Po = 0.946 W
Co = 23.48 µF
Lo = 4.487 µH
NOTES:
(1) Only lightning surge arrestors determined to be
simple apparatus may be installed.
(2) Refer to Tables 10 and 11 in following page that cap-
tures the approved antenna to be used with the WBX
product as remote connection.
Directly
2
Remote
Antenna
RF Cable A or B
Class I, II, Div. 1,
Groups A, B, C, D, E, F, G
Voc = 5.0 V
Isc = 757 mA
Po = 0.946 W
Ca = 23.48 µF
La = 4.487 µH
Via
2
Remote
Antenna
Lighting
Arrestor
RF Cable
A or B
Class I, II, Div. 1,
Groups A, B, C, D, E, F, G
Voc = 5.0 V
Isc = 757 mA
Po = 0.946 W
Ca = 23.48 µF
La = 4.487 µH
6
REMOTE ANTENNAS
6.1
Intrinsically Safe Device Entity
Parameters for Remote Antenna Cables
Table 9 – I Intrinsically Safe Device Entity Parameters
for Remote Antenna Cables
RF Cable A
WCA200RN-
0,61 m
PRSP-002
[2 ft]
WCA200RN-
3,05 m
PRSP-010
[10 ft]
RF Cable B
WCA200RNJR-
0,61 m
SP-002
[2 ft]
WCA200RNJR-
1,52 m
SP-005
[5 ft]
WCA200RNJR-
3,05 m
SP-010
[10 ft]
WCA200RNJR-
4,57 m
SP-015
[15 ft]
WCA200RNJR-
6,1 m
SP-020
[20 ft]
ISSUE 3
50096377
0.34
49 pF
1.69
245 pF
0.34
49 pF
0.85
122 pF
1.69
245 pF
2.54
367 pF
3.38
490 pF
Sensing and Internet of Things
0.12 mH
0.61 mH
0.12 mH
0.3 mH
0.61 mH
0.92 mH
1.2 mH
7
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