Yokogawa Corporation of America

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Yokogawa Corporation of America

• US1000
• Industrial Process
• Controller Introduction

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US1000 Digital Loop Controller

• Large LED display
• Bar graph indications
• IP65 front panel
• Front panel or PC configuration
• Modbus communication option

• Single or dual loop PID control
• Loop power supply for two-wire transmitters
• Universal inputs outputs
• Up to 7 contact inputs/outputs

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US1000 Features

• T/C, RTD, mV or VDC input(s)
• Relay, voltage pulse or DC
• current output(s)
• Up to 7 DI / DO (3 relays)
• Up to 14 different control strategies
• 24VDC power supply for
• transmitter(s)
• Custom computation capability
• US1000-11 or -12
• FM CSA for Div. 2 areas

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US1000 Front Panel Display
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Agency Approvals

• Factory Mutual
• Class 1, Div. 2, Gps. A,B,C,D
• Available since December, 1999
• Canadian Standards Association
• Class 1, Div. 2, Gps. A,B,C,D
• CE Mark
• Installation in Europe

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Size Wiring Terminals
Overall Dimensions 72 x 144 x 150 mm
8.83 x 5.67 x 5.91 in
Panel Cutout 68 x 137 mm
2.68 x 5.39 in
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Setup Parameters Access

• 11 segment PV/Parameter display.
• Hierarchy of
• parameter shown.
• To access SETUP
• menus, US1000
• must be in MANUAL

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Auto Tune Feature

• Uses open loop response to calculate PID values.
• Automatically varies the output (MV) from 0-100
  to determine step response.
• Auto tune is turned off after the third PV peak.
• Super control (fuzzy logic) is available for
  control stability during PV disturbances or
  setpoint (SV) changes.

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Option /A10 for PC or PLC Communication

• MODBUS RTU or ASCII (RS485 2 or 4 wire)
• Up to 31 controllers per serial port.
• Distance is limited to 1200 m (4000 ft).
• Can be connected to Lantronix LDS-10 for network
  connectivity. (Modbus TCP)

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Custom Computation

• Available in US1000-11 -21.
• Requires LL1200-E10
• Custom Computation Tool.
• Select a US mode similar to
• the application requirements.
• Select the appropriate
• computational modules.
• Download the custom
• computation using the light
• loader or RS485 comm. port.

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Custom Computation Block Diagram

• Computation is accomplished by linking modules.
• Math modules (, -, , /, absolute value,
  reciprocal, etc.)
• Logic modules (AND, OR, XOR, NOT, lt, gt, counter,
  etc.)
• Special modules (SUM, time, linearizer,
  totalizer, etc.)

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Custom Computation Example