IT6700 User manual
User Manual
16
If the calibration data in EEPROM is lost, then VFD will display (about 1S) as below:
If the factory calibration data in EEPROM is lost, and then the VFD will display(about 1
S) as below:
3.2 Output Checkout
The following procedures check to ensure that the power supply develops its rated
outputs and properly responds to operation from the front panel.
3.2.1 Voltage Output Checkout
The following steps verify basic voltage functions without load.
1) Turn on the power supply.
2) Set the current value(≥0.01A).
3)
Enable the outputs
Press
On/Off
key(
On/Off
key will be lit) to let the CV annunciator turn on to light.
4) turn on Meter mode
press the METER key to light the button, the Meter status Mark lights on the display
is turned on.
5) Set the voltage for the power supply
Set different voltage values, check the voltage value displayed on the VFD is close to
the voltage value you set, and to check if the VFD displayed current value is nearly
zero.
6) Ensure that the voltage can be adjusted from zero to the full rated value
3.2.2 Current Output checkout
1) Turn on the power supply
2) Press
On/Off
key to ensure that the output is disabled. At the same time, the OFF
status mark is on the VFD.
3) Connect a short across(+) and (-) output terminals with an insulated test lead, use a
wire sufficient to handle the maximum current.
4) Adjust the voltage value to 1V.
5) Turn on the power output.
Press
On/Off
key to ensure the output is enabled, at the same time there is CC
status sign on the VFD.
6) Turn on METER function key.
Press METER key to light it, and the METER status sign is on the VFD.
7) Adjust the current value
Set some different current values, check whether the voltage value on VFD is near 0v,
and the current on it is close to the value you set.
CAL LOST
FACT LOST
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