3700 Series Flat Panel Industrial PC
Chapter 2 – Installation
34
143311 (H)
Hazardous Locations Control Drawing
Warning
The following control drawing applies to front panel ports only.
Class I, Division 2, Groups A, B, C and D, and Class II, Division 2, Groups F and G
Hazardous (Classified) Locations
Notes:
1. Nonincendive Circuit Parameters:
USB Port (Pins 1 to 4)
PS/2 Port (Pins 3 to 4)
V
oc
= 5 VDC
V
oc
= 5 VDC
I
sc
= 3.3 A
I
sc
= 3.3 A
C
a
= 10 uF
C
a
= 10 uF
L
a
= 16 uH
L
a
= 4 uH
2. Selected nonincendive Field Wiring Apparatus shall satisfy the following:
Nonincendive Field Wiring Apparatus
Pro-face/Xycom Model 3715KPM
and KPMT
V
max
≥
V
oc
I
max
≥
I
sc
C
i
+ C
cable
≤
C
a
L
i
+ L
cable
≤
L
a
3. If the electrical parameters of the cable are unknown, the following values may be
used:
Capacitance – 60 pF/ft
Inductive – 0.20 uH/ft
4. Nonincendive Field Wiring must be installed in accordance with Article
501.4(B)(3) of the National Electrical Code ANSI/NFPA 70.
Proface/Xycom Model
3712KPM(T) or
3715KPM(T)
Front Panel USB and
PS/2 Ports
(see note 1)
Nonincendive Field
Wiring Apparatus
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