Wuzhi WZ5020L User manual

Operating Manual for
WUZHI WZ5020L 1kW DC 50V 20A Buck
Converter
Feb 21, 2021
www.Robojax.com
See full review video on YouTube here: https://youtu.be/Ya2MIEn6cSw

2. Product parameters
model:WZ5005L
display:LCD
Input voltage range:6-55.00V
Input voltage resolution:0.01V
Output voltage range:0-50.00V
Output voltage resolution:0.01V
Output current range:0-20.00A
Output current resolution:0.01A
Output power range:0-1000W
Input voltage accuracy:±(1%+5)
Output voltage accuracy:±(0.3%+5)
Output current accuracy:±(0.5%+5)
Typical value of output
ripple:150mV Peak value
Normal operating temperature
range:-10℃~40℃
Capacity measurement range:0-
999.9AH
Statistical error of capacity energy:
±2%
Statistical time range:0-100 hour
Depressurization mode:differential
pressure >0.05%+1V
The weight of nude: 200g
Including packing:242g
Product size: panel79X43X42mm
main board:106x76x40mm
Soft start: Yes
Protection mechanism:
Input undervoltage protection (5.8-50v adjustable, default 5.8v)
Output overvoltage protection (0-51.00v adjustable, default 51V)
Output over-current protection (0-20.10a adjustable, default 20.10a)
Timeout protection (0 - 100h adjustable, off by default)
Over capacity protection (0 –999.9ah adjustable, off by default)

3. Key description
Note: after the product triggers the protection mechanism, the output will
automatically turn off, the LCD will display the protection code, and press any
key to exit the protection interface
4. Interface description

5. Method of use
5.1. Switch display parameters -- in the normal interface, press SW to
switch the display below the display screen, and switch the display
content between current A power W capacity Ah time h.Long press
SW button to switch the uplink display on the display screen and
switch the display content between input voltage IN output voltage
OUT.
5.2. Set output voltage -- press U/I button in the normal interface to
enter the interface of setting voltage constant current.It can be seen
that a certain digit of the output voltage value is flashing. Rotate the

encoder left and right to adjust the major and minor.Short press the
rotary encoder to choose which bit of output voltage to set.After
setting, press U/I button 2 times to return to the normal interface.Or
automatically return to the normal interface after stopping operation for
10s.
5.3. Set constant current value (that is, the maximum current value
allowed to output by the module) -- press U/I button in the normal
interface to enter the setting voltage constant current interface.Then
press U/I button and switch to setting constant current value. You can
see a bit of the setting constant current value flashing. Rotate the
rotary encoder left and right to adjust the major and minor.Short press
the rotary encoder to choose which bit to set the constant current
value.After setting, press U/I to exit the setting voltage constant
current interface and return to the normal interface.Or automatically
return to the normal interface after stopping operation for 10s.
5.4. Set the default on/off state of module power-on -- long press U/I in
the normal interface to enter the parameter setting interface.You can
see that it shows "OPEN OFF" or "OPEN ON". "OPEN OFF" means
the output is turned OFF by default when power is ON, and "OPEN
ON" means the output is turned ON by default when power is
ON.Long press rotate encoder to switch two states.After setting, long
press U/I to return to the normal interface.
5.5. Setting of protection parameters on state and threshold -- long
press U/I to enter the parameter setting interface in the normal
interface.Press SW until the protection you want appears.LUP --
undervoltage protection threshold;OUP -- overvoltage protection
threshold;OCP -- overcurrent protection threshold;OAP -- ultra-
capacity protection threshold;OHP timeout protection threshold.Short
press rotate encoder to select which bit you want to set the protection
parameter.Long press the rotary encoder to set the protection
parameters on or off (only timeout protection and supercapacity
protection can be set to turn on/off, and other protection parameters
are turned on by default.).Rotate the encoder left and right to make
the parameters bigger and smaller.After setting, long press U/I to

return to the normal interface.
5.6. Calibration voltage and current -- press U/I button to enter the
parameter setting interface under normal interface. Press SW key for
a short time until the interface with zero appears, with zero + out + a
symbol. Press and hold the rotary encoder to complete zero
calibration. Short press SW button until a parameter interface with
CAL appears.The calibration input voltage interface with the symbol
CAL+IN+V;The calibration output voltage interface with the symbol
CAL+OUT+V;The calibration output current interface with the symbol
CAL+OUT+A.Rotate the encoder left and right to adjust the size of
parameters.After the adjustment is completed, long press the rotary
encoder to confirm the adjustment is completed, and the parameter
value is no longer flashing.Long press U/I to return to the normal
interface.
Note: in order to ensure the accuracy of calibration, calibration voltage
-- above 12V can only be started;Calibration current - start calibration
only when the current is above 1A.
6 package

7. Cautions
7.1. The module input positive in + and negative in - must
not be reversed, and the module input in - must not be short
circuited with the output out -, otherwise the module may be
burnt out.
7.2. Please ensure that the power moment of the power
supply exceeds the required power of the output load!

7.3. This module is a step-down module, the input voltage
should be higher than the output voltage, and a certain
margin should be reserved. For full load output, the input
voltage should be 55v.
7.4. High power use of this module, serious heating, high
temperature, be careful of scald! Please pay attention to
ventilation and heat dissipation when using high power for a
long time!
7.5. The module has input undervoltage protection function.
The default value is about 5.8v (can be set). When the value
is lower than this value, the output will be automatically
disconnected (note that the voltage at the module port is
lower than the undervoltage protection threshold. When the
input current is relatively large, do not ignore the partial
voltage on the input wire).
See full review video on YouTube here: https://youtu.be/Ya2MIEn6cSw