PN 9000-133-VE, Rev U
About the Analyzer Electronics
Component
Function
General
• One assembly – mounted to a plate
• The electronics/software completely control the analyzer. No
external controllers are required.
• The configuration/monitoring interface to the electronics is
RS-485 MODBUS RTU.
• Analyzer wiring and Customer wiring (i.e. power, I/O) are
directly connected to the main electronics.
- Connections are pluggable.
- Both plugs and headers are laser printed for easy matching.
I/O
The WDG-V has the following I/O available:
• Three (3) configurable 4–20 mA outputs
•
Two
(2) system alarm relays (Service and Data Valid)
• Three (3) configurable process alarm relays
• One (1) RS-485, 2 wire, MODBUS RTU interface (57.6 Kbaud)
• One (1) contact input (for remote auto calibration trigger)
• Valve controls for Remote Calibration Unit (RCU)
Current Outputs
There are three (3) analog outputs in the WDG-V. Each analog
output can be configured for Mode, Function, and Span, Zero.
Mode options include 0–20 mA, 4–20 mA, and NAMUR.
Functions include oxygen, cell millivolts, combustibles*,
methane*.
The analog outputs can be powered internally or externally.
External power must be greater than 26 V.
Refer to “Standard Current Outputs” in Chapter 2 for more infor-
mation.
* For combustible and/or methane units only.
1-10 | Thermox
®
WDG-V / VC / VCM / VM
Содержание WDG-V
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Страница 103: ...PN 9000 133 VE Rev U Figure 3 10 Sensor board removal Maintenance and Troubleshooting 3 29...
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