Cw-Gfc-Is With External Power Source - Emerson ControlWave GFC IStran Instruction Manual

Issued Nov-09
ControlWave GFC IS Communication Interface Manual (CI-CW-GFC-ISTRAN)
Figure 3-2 is similar to Figure 3-1 except it uses an MDS radio instead
of a modem.
Figure 3-2. Radio System with Single Power Source
Figures 3-3 and 3-4 illustrate an externally powered CW-GFC-IS
(without a modem or radio). In this example, the external power source
to the non-hazardous interface must not generate more than 16Vdc and
must be able to supply at least 8Vdc. If you install the IStran in a
Division 2 area, you must connect the power inputs and outputs using
Division 2 wiring methods. (See Section 4.1.)
Note: If you only require a modem or radio, refer to Figure 3-1 and
Figure 3-2. The only difference is that you can replace the 12V
battery by an external 8 to 16 Vdc power supply.
Figure 3-3. CW-GFC-IS with External Power Source
System Wiring 3-3