- 16 -
PARWA_Command(cmd, respond);
PARWA_Command("VSA 220.0", respond); //
auto range 220V
PARWA_Command("ON", respond); //
running
Sleep(200);
sprintf(cmd, "?FR"); //
read frequency
if (PARWA_Command(cmd, respond))
{
Freq->Text = respond;
};
if (PARWA_Command("?VO", respond))
{
Voltage->Text = respond;
//
read voltage
};
Sleep(20000);
sprintf(cmd, "OFF"); //
stop output
PARWA_Command(cmd, respond);
PARWA_Close();
4B
4. FAULTS AND TROUBLE SHOOTING
Fault
No output, all panel indicators are out
Causes
No power supply input
Clear
a)
Check if the power switch is turned on.
b)
Check if the fuse is blowout
c)
Check if the power supply is correctly plugged to local AC mains, or if electricity is
out.
Fault
No voltage output, frequency meter is good, voltmeter displays “0’ and beeper alarms
Causes
Over load or abnormal load
Load with over starting current
Clear
Turn off the POWER switch, press key RESET to reset the setting. Reduce load capacity.
Fault
Remote control port failure
Causes
a)
The remote control address, baud rate are different from the settings on the PC
b)
Connector or wire problem. In this case, disconnect the instrument from the PC
c)
L oose contact or jamming.
Clear
a)
Make the remote control address and baud rate the same on the PC and the
instrument.
