Yokogawa EJA115 - Manual (Page 2)

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CONTENTS
IM 01C22T01-01E
CONTENTS
PRELIMINARY ........................................................................................................ ii
1. ZERO POINT ADJUSTMENT ....................................................................... 1-1
1.1 Zero Point Adjustment ........................................................................ 1-1
1.1.1 Using the HART Communicator ................................................... 1-2
1.1.2 Using the Transmitter Zero-adjustment Screw ............................ 1-2
1.2 Auto LRV (Change Low Range Value) ............................................... 1-3
1.2.1 Using Model 275 — Apply Values ............................................... 1-3
1.2.2 Setting the Range Using the Range-setting Switch .................... 1-3
2. HART COMMUNICATOR OPERATION ....................................................... 2-1
2.1 Conditions of Communication Line ..................................................... 2-1
2.1.1 Interconnection Between DPharp and HART Communicator ...... 2-1
2.1.2 Communication Line Requirements ............................................. 2-1
2.2 Basic Operation of the HART Communicator (Model 275) ................ 2-2
2.2.1 Keys and Functions ...................................................................... 2-2
2.2.2 Display .......................................................................................... 2-3
2.2.3 Calling Up Menu Addresses ........................................................ 2-3
2.2.4 Entering, Setting, and Sending Data ........................................... 2-4
2.3 Parameters .......................................................................................... 2-5
2.3.1 Parameter Usage and Selection .................................................. 2-5
2.3.2 Menu Tree .................................................................................... 2-6
2.3.3 Setting Parameters ....................................................................... 2-7
(1) Tag No. ........................................................................................ 2-7
(2) Unit .............................................................................................. 2-7
(3) Range Change ............................................................................ 2-7
(4) Output Mode (Linear/Sq root) ..................................................... 2-8
(5) Damping Time Constants ............................................................ 2-9
(6) Output Signal Low Cut Mode Setup ............................................ 2-9
(7) Bi-directional Flow Measurement .............................................. 2-10
(8) Change Output Limits ............................................................... 2-10
(9) Integral Indicator Display Mode ................................................. 2-10
(10) Integral Indicator Scale ............................................................. 2-10
(11) Unit for Displayed Temperature ................................................. 2-12
(12) Unit for Displayed Static Pressure ............................................ 2-12
(13) Test Output ................................................................................ 2-13
(14) Sensor Trim ............................................................................... 2-13
(15) Trim Analog Output ................................................................... 2-14
(16) Burst Mode ................................................................................ 2-16
(17) Multidrop Mode ......................................................................... 2-17
(18) External Switch Mode ............................................................... 2-17
(19) Software Write Protect .............................................................. 2-18
(20) Hardware Write Protect and Burnout Direction
(with Optional code /F1) ............................................................ 2-19
(21) H
2
O Unit Select ......................................................................... 2-19
2.4 Self-Diagnostics ................................................................................ 2-20
2.4.1 Checking for Problems ............................................................... 2-20
(1) Identify Problems with HART Communicator ............................ 2-20
(2) Checking with Integral Indicator ................................................ 2-21
3. PARAMETER LISTS ..................................................................................... 3-1
REVISION RECORD
FD No. IM 01C22T01-01E
8th Edition: Oct. 2008(YK)
All Rights Reserved, Copyright © 1995, Yokogawa Electric Corporation