ZUP/NC401 TDK Corporation, ZUP/NC401 Datasheet - Page 34

• Manufacturer Part Number: ZUP/NC401
• Description: CABLE COMMUNICATIONS RS232
• Manufacturer: TDK Corporation
• Series: ZUPr

Specifications of ZUP/NC401

• Connector Type: D-Sub 09 pos Male to RS232 8 pos Male
• Length: 3.28' (1.00m)
• Cable Type: Round
• Color: White
• Shielding: Shielded
• Usage: Communication
• Cable Length: 1m
• Connector Type B: RJ45
• Connector Type A: DB9 Female
• Cable Assembly Type: Serial
• For Use With: ZUP Series Power Supplies
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 285-1666

4.4.4 Automatic Crossover
If the power supply operates in Constant voltage mode while the load current is increased to greater
than the current limit setting, the power supply will automatically switch to Constant current mode. If the
load is decreased to less than the current limit setting, the power supply will automatically switch back
to Constant voltage mode.
1.The OVP circuit monitors the voltage at the power supply sensing points thus guaranteeing the
2. OVP setting values are limited at the minimum and maximum levels. At minimum level, the OVP level
Table 4-1: Maximum OVP setting levels.
3.For over voltage protection adjustment, press OVP/UVP consecutively, until the OVP LED
4. In order to see the value of the OVP, press OVP/UVP pushbutton, so that the OVP LED illuminates.
5. The minimum over voltage level is approx. 105% of the output voltage set value. Attempting to
6. In case the OVP is triggered, the front panel control is disabled unitl the AC input is recycled by
4.4.6 Under Voltage Protection (UVP)
1.The UVP prevents adjustment of the output voltage below a certain limit. The combination of UVP
2. For under voltage protection adjustment, press OVP/UVP consecutively until the UVP LED
3. In order to see the set value of the UVP, press OVP/UVP pushbutton, so that the UVP LED
4. The maximum under voltage level is approx. 95% of the output voltage set value. An attempt to
5.The under voltage protection is a software protection only.
4.4.5 Over Voltage Protection (OVP)
MODEL (by output voltage)
Maximum OVP
At this time the display will show the OVP set value for approx. 3sec.
protection level at the load. Upon detection of Over Voltage condition, the power supply will shut
down. To resume operation, the power switch should be turned off for approx. 30sec. Prior to turn-on,
check carefully that the sense wires are connected correctly and secured.
is limited by the Output Voltage setting, therefore the OVP level cannot be adjusted below the
Output Voltage. At maximum level, the OVP level is limited to the values shown in Table 4-1.
illuminates and the VOLTS display shows OUP. The AMPS display will show the over voltage
protection setting value. Rotate the ADJUST knob to set the over voltage protection level. Approx.
3sec after the adjustment, the display returns to show the actual voltage and current.
and OVP functions allows the user to create a protection window for sensitive loads circuitry.
illuminates and the VOLTS display shows UUP. The AMPS display will show the under voltage
protection setting value. Rotate the ADJUST knob to set the under voltage protection level.
illuminates. At this time the display will show the UVP set value for approx. 3sec.
adjust the under voltage protection above this value will result in no response to the adjustment
attempt.
adjust the over voltage protection below this value will result in no response to the adjustment
attempt.
turning the AC ON/OFF switch to OFF and after approx. 30 sec. to ON.
7.5V
6V
10V
13V
20V
24V
36V
40V
60V
66V
80V
88V
120V
132V