Technical data

90 OM 1191
Appendix
MicroTech III Control Parameters:
TheMD5willbefactoryconguredtoworkwithMicroTech
III Controls and factory tested. The downloaded parameters
have a high probability of being fully correct if the following
parameters are set.
• Parameter9802states:“STDMODBUS”.
• Parameter 1001, 1103, 1601, 1604 and 1608 state:
“COMM”.
• Parameter 5302 = address 1, 2 or 3 as required by the
application.
• Parameter5303=“192”buadrate(19.2KBytes/
second).
• Parameter 5304 = “8 NONE 2”.
• Parameter 5306 “EFB OK MESSAGES” will count up
for every correct message received and continue to do
so.
• Parameter “EFB STATUS” shows “ON-LINE”.
• Parameter 8120 states “NOT SEL”. If “DI4” is seen.
This must be changed to = “NOT SEL”.
• Parameter 1002 states “NOT SEL”. Change to = “NOT
SEL” if needed.
Factory Communications
Troubleshooting Instructions
Reference: Diagnostics – EFB on page 81.
Possible Faults
• Loosewires.Difculttodiscover,checkmechanical
tightness of all terminal connection points. Other faults
specicallydescribedbelowmaybeobserved.
• Incorrect connections (including swapped wires).
• Bad grounding. Check for excessive EFB errors;
improve communications cable installation as required.
• MicroTech III does not properly recognize the
difference between the SAF, RAF and EAF condenser
fan or energy recovery VFDs if the values for both 5307
and 5308 increase for each error transmission attempt.
• MicroTech III communications is not working if
parameters 5306, 5307 or 5308 do not continually
increment their count.
• The Modbus communication port is not working
(broken or controller is OFF) if ALARM 2021 is
ashingonthekepadscreen,parameter5306isnot
increasingitscount,orparameter5309“EFBSTATUS”
shows on the keypad as “IDLE”.
•
The Daikin Factory Test Operator will change any
Group99valuestomatchtheinstalledmotor
nameplates as required for Rooftop and Self-Contained
units.Maverickunitshavespecificallowedmotoramp
values that are entered into the VFD matching the
designspecification.