Dear Customer,
VBR Turbine Partners wishes to inform you on the Parker Meggitt motor controller for fuel metering valves.
Part numbers that are affected by this message:
C450305 Motor Controller
C450285 (C450305 triple enclosure)
C450295 (C450305 with hi-temp enclosure)
The C450305 motor controller is a replacement for the obsolete C173455 analog motor controller.
The C450305 is however NOT A DROP-IN replacement
It is required to make changes in your controls system and possibly in the motor controller itself before installing the C450305 motor controller in your system.
So, before you install a new motor controller, take the following steps and pre-cautions into consideration:
1. Make a backup of the settings in your controls system.
2. Make sure that you have a RS485/422 adapter ready to make changes in the motor controller
3. Make a backup of the motor controller settings
4. Have the part number and serial numbers from your motor controllers (old and new) and FMV noted
5. Check settings in the Maintenance Manual
6. Check and note how are the comm cables RX- RX+ TX- TX+ are connected
7. Check and note how the Signal ground is wired
8. Check or take a photo of the rotary switch settings
9. Check and note the communication settings in the controls system
10. Have a drawing of the current loop & wiring setup ready
In many cases the motor controller will behave as programmed. Problems have been found with operators operating Speedtronic Mark VLM, MKVI and MKVIe controls systems.
In case you have one of these controls systems, or any other question with respect to installation of the C450305 motor controller, please contact us on meggitt@vbr-turbinepartners.com.
