Rockwell Automation 1770-HT8 SMART TRANSMITTER - Manual (Page 45)

Installing the Smart Transmitter Interface
Products
Chapter 2
2-20
Connecting Power to the Communications Controller
To connect the power supply to the Communications Controller:
1. Turn the power supply off.
2. Attach the 3 position Phoenix COMBICON plug (supplied) to the
output cable of the power supply.
3. Insert the plug into the power connection header on the upper right
corner of the Communications Controller (Figure 2.18).
4. Turn the power supply on.
Important: Be sure to turn the power off while connecting the cables.
Figure 2.18
Connecting the Power Supply to the Communications Controller
90020
+ 24 VDC
EARTH
GROUND
COMMON
Communications Controller
+ -
24V DC
HART field devices are of two types:
those that draw power from the 4–20 mA loop (2 wire transmitters)
those that require an external power supply (4 wire transmitters)
The HT8/16 Terminal Blocks support both types, and they can be mixed on
the same Terminal Block. Each channel on the Terminal Block has a
jumper block associated with it, JPn. The ‘n’ is the number of the channel
(1 to 8 or 1 to 16). This jumper block indicates the type of HART
transmitter connected to the channel in question.
Supplying Loop Power for
HART Field Devices