Proface FP3900 - 19 Flat Panel" - Manual (Page 12)

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• Suitable for use in Class I, Division 2, Groups A, B, C, and D Hazardous Locations only.
• WARNING: Explosion hazard - substitution of components may impair suitability for Class I, Division 2.
• WARNING: Explosion hazard - do not disconnect equipment while the circuit is live or unless the area is known to be
free of ignitable concentrations.
The information below concerns the use of the USB I/F located on the FP unit's front modules used in Class I,
Division 2 Groups A, B, C, and D hazardous locations (from Doc No. 35016429).
FP's Front Module
Notes:
(1) Nonincendive Circuit Parameters:
Front USB I/F:
Voc = 5.0 V, Isc = 1.25 A, Ca = 10 mF, La = 16 mH
(2) Selected Associated Nonincendive Field Wiring Apparatus shall satisfy the following:
(3) If the electrical parameters of the cable are unknown, the following values may be used:
Capacitance = 60pF/ft, Inductive = 0.20 µH/ft
(4) Nonincendive Field Wiring must be installed in accordance with article 501.10(B) of the National Elec-
trical Code ANSI/NFPA 70.
(5) Nonincendive Field Wiring Apparatus shall not contain or be connected to another source of power.
The safety certificate can be downloaded from Pro-face Home Page.
Home Page URL
http://www.pro-face.com/
Nonincendive Field
Wiring Apparatus
- Front module of FP unit
Voc
≤
Vmax
Isc
≤
Imax
Ca
≥
Ci+C cable
La
≥
Li+L cable
USB Pin Description
(See note 1 for detail)
Shield. Gnd
1.Vcc
2.D-
3.D+
4.GND
1 2 3 4
Nonincendive Field
Wiring Apparatus