Rockwell Automation 2080-LC30-48AWB_48QWB_48QVB_48QBB Micro830 48 Point LC30 Programmable Controllers - Manual (Page 12)

12 Micro830 48 Point Programmable Controllers
Publication 2080-IN005B-EN-P - April 2014
Control Drawing for Class 1 Division 2 Applications
Hazardous Location
Class 1 Division 2,
Groups A, B, C, and D
Non-Hazardous Location
Micro800
Controller
USB Port
J3
V
max
= 5V DC
I
max
= 500
μA
L
i
= 1 μH
C
i
= 120 pF
Any associated apparatus with
Universal Serial Bus (USB) connection
USB Port
V
oc
, I
sc
, L
a
and C
a
to be determined per
Capacitance and Inductance Values
table
Capacitance and Inductance Values
Nonincendive
Equipment
Associated Apparatus
V
max
(or U
i
) ≥ V
oc
or V
t
(or U
o
)
I
max
(or L
i
) ≥ I
sc
or I
t
(or I
o
)
C
i
+ C
cable
≤ C
a
(or C
o
)
L
i
+ L
cable
≤ L
a
(or L
o
)
Capacitance and Inductance of the field wiring from the nonincendive equipment to
the associated apparatus shall be calculated and must be included in the system
calculations as shown in the table above.
Where the cable capacitance and inductance per foot are not known, the following
values shall be used: C
cable
= 60 pF/ft, L
cable
= 0.2 μH/ft.
Wiring method must be in accordance with ANSI/NFPA70.