Max Machinery 121 INDICATOR - Manual (Page 66)

Pg 66 121-000-350 © 2001 Max Machinery, Inc.
13.2 Diagnosis Flow Chart and Troubleshooting
13.3.2
Self Test Alarms
Error/Warning Message
FLOW INPUT TOO HIGH
AUX INPUT TOO HIGH
FLOW INPUT TOO LOW
BATTERY LOW WARNING
A to D NOT CONVERTING
TIME CLOCK ERROR
CAL CHECKSUM ERROR
SETUP CHECKSUM
ERROR
Cause
Analog input signal of the
flow input exceeded by
more than 3%:
• Sensor overranged
• Incorrect full scale setting
of flowmeter
• Function error in transmit-
ter or faulty wiring
Analog input signal of the
auxiliary input exceeded by
more than 3%:
• Sensor overranged
• Incorrect full scale setting
of transmitter
• Function error in transmit-
ter or faulty wiring
Analog input signal of the
flow input fell below the low
scale range by more than
3% of full scale value:
• Flowmeter not set to 4-20
mA
• Function error in transmit-
ter or faulty wiring
Battery voltage too low
Fault in analog/digital con-
verter
The correct time/date is no
longer shown
Calibration constants have
been corrupted
The units setup has been
corrupted
Remedy
• Check analog signal range
• Check the application con-
ditions
• Check wiring
• Check analog signal range
• Check the application con-
ditions
• Check wiring
• Check wiring
• Check calibration of
flowmeter
• Check function of flowmeter
• Replace Battery
• Consult Factory for service
information
• Unit may self correct,
Press ENTER to acknowl-
edge & clear alarm
• If error reasserts, factory
service is required
• Re-enter time and date.
• If error occurs again con-
tact factory
• Report error to factory
• Report error to factory