4 Setting Up
4.3 Use in North America
24
Version 04 05/2014
CONTROL DRAWING: Hazardous Locations Class I Division 2 Groups A, B, C, D
Notes:
The nonincendive field wiring circuit concept allows interconnection of nonincendive field wiring apparatus
and associated nonincendive field wiring apparatus using any of the wiring methods permitted for
unclassified locations when certain parametric conditions are met.
V
max
V
oc
I
max
I
SC
C
a
> C
i
+ C
Cable
L
a
> L
i
+ L
Cable
Nonincendive field wiring circuits must be wired in accordance with the National Electrical Code (NEC),
NFPA 70 , article 501.10(B)(3)
Nonincendive Field Wiring Parameters:
V
max
[V]
I
max
[mA]
C
i
[pF]
L
i
[µH]
connector: contacts:
7 pole Fault contacts
30
90
20
0.5
WARNING - EXPLOSION HAZARD – SUBSTITUTION OF COMPONENTS MAY IMPAIR SUITABILITY
FOR HAZARDOUS LOCATIONS OR EXPLOSIVE ATMOSPHERES.
WARNING - EXPLOSION HAZARD - DO NOT DISCONNECT EQUIPMENT UNLESS POWER HAS BEEN
SWITCHED OFF OR THE AREA IS KNOWN TO BE NON-HAZARDOUS.
DO NOT OPEN WHEN ENERGIZED.
Title:
CONTROL DRAWING for OZD Profi 12M Pro
.
v
e
R
R
N
D
4
4
9
4
4
1
0
0
0
:
.
o
N
t
n
e
m
u
c
o
D
4
A
e
z
i
S
1
.
1
1
f
o
1
t
e
e
h
S
3
2
-
2
1
-
9
0
0
2
:
e
t
a
D
Non Hazardous Location
HAZARDOUS LOCATION
Fault
Gnd
Channel 1
PROFIBUS
PROFIBUS bus segment (RS485 Interface)
Analog outputs (Receive Signal Intensity)
CH2 CH3
Connection not required – for reference only
0V
+24V (P1)
+24V (P2)
Channel 2
Channel 3
Power supply (Redundant)
V
V
Fault contacts. (Short: o.k., Open: fault)
Equipment with nonincendive
field wiring parameters:
V
max
= 30 V I
max
= 90 mA
1
1
See Control Drawing
000144944DNR
Entity Parameters
...for Class I Division 2 Groups A, B, C, D =>
IP54 enclosure