Yokogawa digitalYEWFLO (DY-FF) - Manual (Page 47)

<9. GENERAL SPECIFICATIONS>
9-3
IM 01F06F00-01EN
Functional Specifi cations:
Functional specifi cations for Fieldbus communication conform to the standard specifi cations (H1) of F
OUNDATION
fi eldbus.
F
OUNDATION
Fieldbus specifi cations (ITK 5.0.1) grant the interoperability of the fi eld instruments.
Function blocks:
Block name Number Execution time Note
AI 3 29 ms
AI1: Monitors the fow rate and totalized fl ow rate; AI2: Monitors the temperature
for a model with the multi-variable type option; AI3: volumetric fl ow input for mass
fl owrate calculation of AR.
DI 2 25 ms Flow and temperature limit switches
AR 1 40 ms Mass fl ow calculation
IT 1 40 ms
Integrator block integrates a variable as a function of the time or accumulates the
counts
PID 1 40 ms Applicable when LC1 option is specifi ed
9.2 Model and Suffi x Codes
DY
-F -/

-N
DYA-F/
F: digital communication (F
OUNDATION
Fieldbus protocol)
N: Remote type detector
9.3 Optional Specifi cations
IMPORTANT
In case of the remote type, select the same specifi cation (code) for both detector and converter.
For options other than below, refer to GS 01F06A00-01EN.
(Note1) For intrinsically safe approval, use the barrier certifi ed by the testing laboratories (BARD-400 is not applicable).
Item Description Code
Multi-variable Type Provides a temperature sensor (Pt 1000) built-in the vortex shedder bar, enabling the AI2 function block
to output the process fl uid temperature, and mass fl ow rates to be calculated. (For details, refer to GS
01F06A00-01EN.) MV
PID Function Provides a PID control function block. LC1
Software download
function Based on F OUNDATION Fieldbus Specifi cation (FF-883)
Download class: Class 1
EE