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4. Explanation of Functions and Precautions
4-1. Input Voltage Range
Input voltage range is single phase 85-265VAC(47-63Hz). Never operate the unit out of the specified input
voltage range to avoid unit failure. For cases where conformance to various safeties required, input voltage
range will be 100-240VAC (50-60Hz). If input voltage is less than 115VAC, output power need to be derated.
Output derating vs. the input voltage
CUS200LD-3
Input Voltage (VAC)
Load (%)
85~265
120
100
80
60
40
20
0
85 100 115 130 145 160 175 190 205 220 235 250 265
4-2. Output Voltage Range
Output voltage is set at the nominal value at shipment. Output voltage can be adjusted by the V.ADJ trimmer
(VR51), the output voltage setting should be within the range in the specifications. Turning the trimmer
clockwise, the output voltage will be increased. Please note if the output voltage is increased excessively, over
voltage protection (OVP) function may be triggered and output will be shut down. Furthermore, when
increasing the output voltage, output current should be reduced so that the output power does not exceed the
maximum output power in the specifications.
4-3. Inrush Current
Power thermistor is used for limiting the inrush current. Higher current will flow at higher ambient
temperature or input re-power on. Please select input switch or external fuse carefully. The inrush current value
specified in the specification is under cold start condition (at 25 ).
4-4. Over Voltage Protection (OVP)
The OVP function (Inverter shut down method, manual reset type) is provided. Please refer to the specification
for OVP trip level. When OVP is triggered, the output will be shut down. To reset OVP, turn off the input of
power supply for a few minutes, and then re-power on. The OVP setting is fixed and can not be adjusted
externally. Pay attention not to apply higher voltage externally to the output terminal to avoid unit failure. In
case of inductive load, put protective diode in series to the output power line.
4-5. Over Current Protection (OCP)
The OCP is hiccup mode with automatic recovery. The outputs will be automatically recovered when the
overload condition is removed. Please refer to the specification for OCP trip level. Never operate the unit under
over current or shorted conditions, which may cause the unit damage. OCP setting is fixed and cannot be
adjusted externally.
CUS200LD-4
Input Voltage (VAC)
100
85
100~265
Vin (VAC)
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TDK-Lambda
CUS200LD
INSTRUCTION MANUAL
CUS200LD-5,-7R5,-12,-15,-24,-28,-48
Input Voltage (VAC)
Load (%)
90
85
100
115~265
CUS200LD-3
CUS200LD-4
CUS200LD-5,-7R5,
-12,-15,-24,-28,-48
Load (%)
80
100
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