Ism Vfd Input/Output Calibration - Carrier AquaEdge 19XR Controls Operation And Troubleshooting

Fig. 37 — Maintenance Menu Calibration
2. Place the temperature sensor in a 32 F (0° C) water
solution.
3. Read the sensor raw temperature on the Maintenance
screen.
4. Calculate the offset to be applied as follows:
32 – sensor raw temp (°F)
Example:
ECW sensor raw temperature reads 32.6 F.
ECW temperature offset must be set to –0.6° F
(32 – 32.6 = –0.6)
5. In the Temp Sensor Calib screen, enter the temperature
offset for the appropriate sensor as calculated in Step 4.
See Fig. 38 and 39.
NOTE: The offset cannot exceed ± 2° F (1.1 ° C).
TEMP_CAL - Temp Sensor Calib
Fig. 38 — Temp Sensor Calib Screen, Page 1
Fig. 39 — Temp Sensor Calib Screen, Page 2
6. Verify that the measured temperature value is the same as
the controlled temperature.
ISM VFD INPUT/OUTPUT CALIBRATION — VFD Tar-
get Speed Output (J8-1,2) and VFD Speed Feedback (J6-1,2)
must be calibrated as part of commissioning the variable fre-
quency drive. Before performing the calibration, be sure that
VFD Option = 1 (FS FVD) (Main Menu  Configuration
Menu  Factory Parameters) and that the controller has been
connected to the ISM board. Objective is to have target speed
match actual VFD speed within 5% or better at 70 to 100%
speed. Note that it is possible for all calibration to be done at
the drive. J8B must be used to provide the drive with a signal.
Calibrating J8B 4-20mA Output (to VFD)
1. Go to Main Menu  Maintenance Menu  ISM Cali-
bration. See Fig. 40.
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Fig. 40 — ISM Calibration Screen
2. Select J8B 4-20mA Output. The ISM_CAL1 screen is
displayed. See Fig. 41.
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TEMP_CAL - Temp Sensor Calib
ISM Calibration
J8B 4-20mA Output J6 0-10V Input
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