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3.
Explanation of Function and Precautions
3-1. Input Voltage Range
Input voltage range is single phase 85 ~ 265VAC ( 47 ~ 63Hz )
or 120 ~ 370VDC. Input voltage which is out of specification
may damage unit. For cases where conformance to various
safety specs(UL,CSA,EN) are required, input voltage range
will be 100 ~ 240VAC ( 50/60Hz ).
3-2. Output Voltage Range
V.ADJ trimmer (VR1 & VR2) which is nearby to output
connector is for output voltage adjustment. Please refer to the
specifications for the output adjustment range. When the
trimmer is turned clockwise, the output voltage will increase.
Note that over voltage protection (OVP) function may trigger if
the output voltage is increased excessively.
3-3. Inrush Current
This series used Power Thermistor to protect the circuit from
Inrush Current. Please carefully select input switch and fuse in
cases of high temperature and brown-out.
3-4. Over Voltage Protection ( OVP )
OVP circuit will shutdown output correspondingly. OVP for
V1, both V1 & V2 will shutdown, OVP for V2, only V2
shutdown. Manual reset or input voltage recycling is needed for
output recovery.
3-5. Over Current Protection ( OCP )
OCP type is constant current limiting with automatic recovery.
OCP function operates when the output current exceeds OCP
specifications. The output will automatically recover when the
overload condition is removed. Do not operate overload or
dead short conditions for more than 30 seconds, which could
result in damage. There is no possibility of fire or burning.
3-6. Over Temperature Protection ( OTP )
OTP circuit is built into the power supply to prevent user from
fire hazard when ambient temperature is over the specification.
3-7. Output Ripple & Noise
The standard specification for maximum ripple and noise value
is measured according to measurement circuit specified below.
When load lines are longer, ripple and noise may become larger.
In this case, electrolytic capacitor, film capacitor, etc. might be
necessary across the load terminal. The output ripple and noise
cannot be measured accurately if the oscilloscope probe ground
lead is too long.
3-8. Series Operation
Series operation is not possible.
Power
Supply
Output
Terminal
Output
Terminal
3-9. Parallel Operation
Paralled operation is not possible.
Power
Supply
Output
Terminal
Output
Terminal
- 6 -
TDK-Lambda
ZWD150PAF Series
INSTRUCTION MANUAL
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