Rockwell Automation 2080-LC30-24QWB_24QVB_24QBB Micro830 24 Point Programmable Controllers - Manual (Page 12)

12 Micro830 24 Point Programmable Controllers
Publication 2080-IN004B-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.