PW336i
Hardware User Manual
36
or voltage short-circuit alarm while high voltage output.
7
．
Output waveform is incorrect.
1) Check the setting output value.
2) Check if the open circuit casue no oscillogram.
3) Check if the parameter setting of output monitor windows is correct, each amplitude is too
big, and the phase color is the same as grounding.
4) Check if the output terminal has accurate output.
5) Although the closed loop is damaged, it will not affect current and voltage output.
8
．
About Udc.
1
）
Only the output voltage is higher than 40V, the indicator will light. If the indicator doesn’t
light at 220VDC, you can measure Udc output terminal. If there is output, there is
problem with indicator’s display circuit. But it doesn’t affect output.
2
）
The short-circuit of Udc switches within several minutes, lower than Uac short-circuit
alarm.
3
）
If the Udc power can’t output the higher voltage set by software, the power supply
doesn’t work well.
4
）
When the Udc with load alarms, it is due to low load impedance or power supply
malfunction. The max. Load capacity is 0.55ADC.
9
．
The phase is inaccurate.
1) Check if the phase measurement method is right and it is normal without load.
2) Check if the setting output amplitude is accurate. Otherwise, it affects phase
measurement.
3) Check the system frequency setting and test phase frequency. If the two frequencies are
not the same, the angle will change.
4) Check the site pahse meter is normal and the setting is correct. Some pahse meter can’t
measure phase at high frequency.
10
．
The frequency is inaccurate.
