Hardware reference guide

Intrinsically Safe Modules
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35013379 11/2011
Fixed Wiring System
The DIO33000 module is designed with a fixed wiring system where the field
connections are made to a 40-pin, fixed position, blue terminal strip, which is
plugged into the module.
Field Wiring
Field wiring to the module consists of separate shielded, twisted pair wires. The
acceptable field wire gauge is AWG 20 to AWG 12. Wiring between the module and
the intrinsically safe field device should follow intrinsically safe wiring practices, to
avoid the transfer of unsafe levels of energy to the hazardous area.
Terminal Strip Color and Keying Assignment
The module’s 140XTS33200 field wiring terminal strip is color-coded blue to identify
it as an intrinsically safe connector.
The terminal strip is keyed to prevent the wrong connector from being applied to the
module. The keying assignment is given below.
Module Class Module Part Number Module Coding Terminal Strip Coding
Intrinsically Safe 140DIO33000 CDE ABF