WESTLOCK CONTROLS CORPORATION
280 N. MIDLAND AVE., STE. 258, SADDLE BROOK, NJ 07663 TEL: 201-794-7650 FAX: 201-794-0913
www.westlockcontrols.com
10/5/2013
TECH-477/D.W.O. 21424
Page 9 of 206
1.3 Description
The ICoT 5500 (ICoT PA) provides intelligence for the
control valve through a microprocessor-based system
utilizing the PROFIBUS PA protocol. Accurate
measurement of valve stem position, input signal,
actuator pressure, cycle time and cycle count data can
be recorded during normal operation.
The positioner has a local LCD display, which indicates
valve position, set-point in percentage open, calibration
status, alarms status and whether the ICoT is in local or
fieldbus control. If a failure condition occurs, an error
message is displayed on the local LCD display and
communicated to the Host system via fieldbus.
The ICoT PA is an electro-pneumatic servo system that
continuously controls the position of a valve based on
the fieldbus input signal. The ICoT senses valve position
via a non-contact Hall Effect sensor and controls valve
position through a current to pressure transducer
The ICoT PA is a two wire,
polarity insensitive
instrument that receives both signal and power from the bus. Current consumption of the
ICoT is 12.5mA with an operating voltage of 9 – 32 Vdc.
The ICoT PA version allows calibration and access to on-line diagnostic information via
hand-held terminal or through software.
A set of hermetically sealed non-contact limit switches is an option that can be integrally
supplied with the ICoT PA.
