MEC 20 MICROPROCESSOR ENGINE/GENERATOR CONTROLLER
PM047 Rev 13 05/03/30
75
Thomson Technology
With the correct current displayed, press the
ENTER
push-button to
accept the correction factor number. Record the correction factor number
on the MEC 20 programming sheet for future reference if required.
Repeat the above procedures for all remaining generator current phases.
NOTE:
Once the span calibration setting has been
completed, re-confirm the zero calibration
points. If the zero calibration setpoint needs
further adjustment, the span calibration
point must also be re-calibrated.
10.6.6. BATTERY VOLTAGE CALIBRATION
BAT VOLTS SPAN
99 24.6V
Displays the type of calibration function (SPAN).
Displays the calibration correction factor number (0-255) used to obtain the
correct voltage reading.
Displays the actual battery voltage measurement that will be the same value as
shown on the MEC 20 display menu. This voltage reading may be calibrated
higher or lower by changing the correction factor number.
10.6.7. BATTERY VOLTAGE CALIBRATION PROCEDURE
NOTE:
To accurately calibrate the MEC 20’s
battery voltage sensor, an external test DC
voltmeter is required, with an accuracy of
0.5% or better.
To calibrate the battery voltage sensor, perform the following procedure:
10.6.7.1.
SPAN CALIBRATION
Energize the battery supply voltage to the controller and connect the
external test DC voltmeter to the battery terminals, B+ and B-.
In the programming mode, scroll to the battery span calibration point.
Summary of Contents for MEC 20
Page 2: ......
Page 6: ...MEC 20 MICROPROCESSOR ENGINE GENERATOR CONTROLLER...
