TDK-Lambda HWS300P Series Instruction Manual page 9

6. Functions and Precautions
6-1. Input Voltage Range
Input voltage range is single phase 85 ~ 265VAC (47 ~ 63Hz) or 120 ~ 330VDC. Input voltage, which is out of specification,
may cause unit damage. Rated input voltage for safety standard application is 100 ~ 240VAC(50/60Hz).
6-2. Output Voltage Range
Output voltage is set to the rated voltage value at shipment. V.ADJ trimmer on the front panel side is used to adjust the output
voltage within the range specified.
Output voltage range is within －20%～＋10% of rated output voltage.
To turn the trimmer clockwise, the output voltage will be increased. Take note when the output voltage is increased excessively,
over voltage protection (OVP) function may trigger and output voltage will be shut down.
When output voltage increased, average output power and peak output power have to use less than specification.
6-3. Over Voltage Protection (OVP)
The OVP function (Inverter shutdown method, manual reset type) is provided. OVP function operates within 115-135% of the
rated output voltage value, and the output will be shut down when OVP function trigger. To reset OVP, remove the input of
power supply for a few minutes, and then re-input. Or, use CNT reset ( remote ON/OFF : OFF to ON). OVP value is fixed and
not to be adjusted externally.
Never apply more than rated output voltage to output terminal, which may lead damage to power supply. In the case of inductive
load, use decoupling diode at output line.
6-4.Delay Shut Down
This product have a delay shut down function provided to protect power supply and equipment at the time of the consecutive
peak current. When the product operate peak current for more than 5 seconds, delay shut down function operates and the output
will be shut down.
To reset delay shut down, remove the input of power supply for a few minutes, and then re-input. Or, use CNT reset ( remote
ON/OFF : OFF to ON).
Delay Shut Down Time value is fixed and not to be adjusted externally.
Use it about the peak electricity in specifications range. The details see at "4-14. Output Peak Power".
6-5. Over Current Protection (OCP
The OCP function (manual reset type) is provided. Output will be shut down in condition over current or output short-circuit.
To reset OCP, remove the input of power supply for a few minutes, and then re-input. Or, use CNT reset ( remote ON/OFF :
OFF to ON).
Also avoid over current condition or output short-circuit. Otherwise the product will be damage.
OCP value is fixed and not to be adjusted externally.
6-6. Over Temperature Protection (OTP)
The OTP function (manual reset type) is provided. When ambient or internal temperature rises abnormally, OTP function
operates and output will be shut down. To reset OTP, remove the input and cool it down. Then re-input.
Or, use CNT reset after cool it down( remote ON/OFF : OFF to ON).
6-7. Low Output Detection Circuit (PF)
Low output voltage detection circuit is provided. Power Fail (PF) signal will turn "High" level to indicate the abnormal status
when the output voltage becomes within 65 ~ 80% of rated value caused by either the drop or brownout of the input voltage or
OCP, OVP, Delay Shut Down and OTP etc function operation. When the built-in Fan of this power supply unit stops, PF signal
will turn to "High". The PF signal is isolated from input and output by a photo-coupler. It uses the open collector method shown
in below.
- 9 - 17
)
PF
TOG
- 9-
TDK-Lambda
HWS300P-600P Series
INSTRUCTION MANUAL
V max=30V
CE
I max=20mA
C