350053 350053
Bently Nevada’s Electronic Overspeed Detection System
for the 3500 Series Machinery Detection System provides
a highly reliable, fast response, redundant tachometer
system intended specifically for use as part of an
overspeed protection system. It is designed to meet the
requirements of American Petroleum Institute Standards
670 and 612 pertaining to overspeed protection.
3500/53 modules can be combined to form a 2-out-of-2 or
2-out-of-3 (recommended) voting system.
The use of redundant power supplies in a 3500 rack
containing the Overspeed Detection System is required.
Outputs
Front Panel LEDs
OK LED: Indicates when the 3500/53
Module is operating properly.
TX/RX LED: Indicates when the 3500/53
Module is communicating with
other modules in the 3500 rack.
Bypass LED: Indicates when the 3500/53
Module is in Bypass Mode.
Test Mode LED: Indicates when the 3500/53 is in
Test Mode.
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