- Emerson Remote Terminal Unit Instruction Manual

CI-ControlWave Express Installation & Operation / 2-23
Figure 2-15 - ControlWave Express to 3808s - RS-485 Network Diagram
Figures 2-13 and 2-14 detail the RS-232 and RS-485 wiring connections required between
the ControlWave Express and the Model 3808 Transmitter.
Up to two Model 3808 Transmitters can be connected to a ControlWave Express via a half-
duplex RS-485 Network. An illustration of this network is provided in Figure 2-15.
2.3.7 Power Wiring & Distribution
Primary Power is user supplied applied to Connector TB1 of the CPU/System Controller
Board (TB1-3 = Power In + & TB1-4 = GND) and is based upon the type of CPU/System
Controller Board as follows:
• 14MHz Ultra Low Power CPU: Nominal +6Vdc (+5.4V to +16.0V) or Nominal +12Vdc
(+11.4V to +16V) bulk input supply.
• 33MHz Low Power CPU: Nominal +12Vdc (+11.4V to +16.0V) or Nominal
+24Vdc (+21.8V to +28V) bulk input supply.
• 33MHz with Ethernet CPU: Nominal +12Vdc (+11.4V to +16.0V) or Nominal
+24Vdc (+21.8V to +28.0V) bulk input supply.
Two other power interface connections are provided on 14 MHz Ultra Low Power and 33
MHz Low Power CPU/System Controller Boards and function as follows:
Click here to return to Table of Contents