Class I, Div 2 Installation Considerations; Installation Overview - Emerson ControlWave EFM 3808 Instruction Manual

Caution

2.1.1 Class I, Div 2 Installation Considerations

WARNING

2.2 Installation Overview

Revised Mar-2011
ControlWave Express Instruction Manual (CI-ControlWave Express)
Placement of the ControlWave Express in Class 1, Division 2 (Group A,
B, C, and D) hazardous locations requires that you install it in a NEMA 1
or better enclosure.
Underwriters Laboratories (UL) lists the ControlWave Express as non-
incendive and suitable only for use in Class I, Division 2, Group A, B,
C, and D hazardous locations and non-hazardous locations. Read this
chapter and Appendix A carefully before you install a ControlWave
Express in a hazardous location.
Perform all power and I/O wiring in accordance with Class I, Division 2
wiring methods as defined in Article 501-4 (b) of the National Electrical
Code, NFPA 70 (for installations within the United States) or as
specified in Section 18-152 of the Canadian Electrical Code (for
installation in Canada).
EXPLOSION HAZARD
Substitution of components may impair suitability for use in Class I,
Division 2 Group A, B, C and D environments.
When the ControlWave Express is situated in a hazardous location,
turn off power before servicing or replacing the unit and before
installing or removing I/O wiring.
Do not disconnect equipment unless the power is switched off or the
area is known to be non-hazardous.
Installing a ControlWave Express involves several general steps:
Unpacking, assembling, and configuring the hardware. This
1.
includes:
a) Mounting the chassis on a panel or DIN-rail in an appropriate
enclosure. (See Section 2.2.2)
b) Enabling the backup battery by setting jumper W3 on the
CPU/System Controller board to position 1 to 2. (See Section
2.3.2)
b) Setting switches and jumpers on the CPU/System Controller
board (see Section 2.3.1 and Section 2.3.2) and on the Process
I/O board (see Section 3.2.1 and Section 3.2.2) and placing both
boards (as a single assembly) into the chassis.
d) Connecting communication cables. (See Sections 2.3.5, 2.3.6,
and 2.3.7)
e) Wiring I/O. (See Section 3.3)
Installation 2-3