Description
First, the CE4003S2B1 linear range of the LVDT must exceed the mechanical range. This
means that when the valve is at either endpoint, one of the secondary voltages
will be at its minimum. The secondary voltage must be large enough at the
endpoint so that if a wire breaks and the secondary CE4003S2B1 voltage goes to zero, the
change of voltage will be large enough to be readily detected. A good guideline
is to ensure that each secondary always contributes at least 10%, positive or
negative, to the demodulated voltage. That is,
min (|A|, |B|) / (|A| + |B|) > 10%
This minimum secondary value is expressed in percentage, is tunable, and is
called MIN2NDRY.
brand | Product Name | Product model | Order No |
EMERSON | modular | CE4003S2B1 | nothing |
Place of Origin | Marketable land | Imported or not | defects liability period |
Europe and America | Nationwide and overseas | yes | a year |
Place of shipment | Delivery method | How to use | Applicable industries |
Xiamen | Shunfeng Express | Commissioning and installation | Power Plant Steel Plant Cement Plant Shipboard Papermaking |
Service advantages | Foreign import, goods preparation and supply | Reasonable price and reliable quality | Pictures are for reference only |
Product features | Primary source of goods, supply by model | After sales guarantee | Chen 1810693-7731 |
Second, the LVDTs must be calibrated CE4003S2B1 prior to being placed into redundant
service, and for all possible positions, the feedback signal of the Primary should
be near the feedback signal of the backup. This value is called
LVDTTRACKING, and its default value is 1%.
Coil diagnostics rely on a steady voltage across the coil. This voltage will be present
if you adjust the servo valve per the WPC recommendation.
The servo valve has a mechanical bias set-screw that pushes the spool to one side,
allowing flfluid to escape the actuator and slowly close the valve in the absence of
electrical excitation. In the standard setup approximately 200 mV across both coils
opposes the mechanical bias CE4003S2B1 adjustment and holds the spool in the center position,
trapping the flfluid in the actuator, and holding the valve in a fifixed position. Adjusting
coil current changes spool position so that current can flflow into or escape from the
actuator. (Technically, the operation of the servo valve is dependent on current
through the coil and the mechanical bias adjustment. However, the VP is set up to
measure voltage across the coil and at the amplififier output, so voltage
measurements are typically referenced in this description.)
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