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Function Menu Description
Press and hold the SET button for 3 seconds and release it to enter the function menu interface (F01-F09). Press the + and - buttons to switch in
between menus. Select the menu and click the SET button to enter the setting state. The display starts flashing. Set the data with + and - keys, long
press the SET key to automatically save the data and exit. It will return to the original current interface. If the selected function is wrong, user can click
the ESC key to return to the function menu selection interface to re-select.
For details of the function menu interface, see the following table:
Note: If user do not want to use a particular function, kindly set the parameter to 000 to close the particular function.
Function Menu
Number
Current upper limit setting: (Range: lower limit ~ range): When the lower limit function is closed, the range is: > 0 ~ range.
F01
After setting the parameter, if the detected current exceeds the parameter, the relay on the module will act (pull in).
Current lower limit setting: (Range: > 0 ~ upper limit): When the upper limit function is closed, the range is: > 0 ~ range.
F02
After setting the parameter, if the detected current is lower than the parameter, the relay on the module will act (pull in).
Power-on delay time setting: (Range: 0.01S ~ 99.9S)
Power-on delay means, after the module is powered ON, the module does not do any checks within the delay time. It is mainly used
F03
to avoid the instantaneous flow of current of the device when the module and the device under test are powered ON at the same
time, causing the relay to act (pull-in).
Delay protection time setting: (Range: 0.01S ~ 99.9S)
F04
Delay protection means that after the current detected by the module exceeds the set current value and the duration exceeds the
set time, the module relay will act (pull in).
Delay recovery time setting: (Range: 0.01S ~ 99.9S)
Delay recovery means that the current detected by the module exceeds the set current value. After the relay acts (closes) and the
current returns to normal, the relay does not releases immediately, but continues to attract until the set time and then the relay
releases.
An extended function is added to this function: When this time is set to OFF, after the relay acts, it will not recover by itself, and it
needs to be recovered manually.
OFF setting method: After entering the setting interface of this function menu, click the SET button to move the blinking cursor to the
F05
highest position, and keep pressing the + button until OFF is displayed. Press and hold the SET button to save and exit.
When the relay on the module operates, regardless of the current, the relay does not releases automatically. The relay state can
only be restored manually.
OFF closing method: After entering the function menu setting interface, directly press the - key to display 99.9, and then use the
SET key to change positions and +/- keys to set the required time.
Manually restore the setting: When the detection current returns to normal, press and hold the ESC key. The relay can return to its
initial state.
Transformer winding turns setting: Default: 001
In the actual use process, if the current line is passed through the transformer for 2 turns, the current of 1 A will be displayed as 2 A.
F06
At this time, when the parameter is set to 2, the display shows the actual current of 1 A.
Note: This parameter can only be used when the transformer is threaded, the number of the parameter should be set the
same with the number of the turns threaded.
Range display: Used to display the maximum current range of the module.
F07
Note: This parameter cannot be changed by the user at will. Otherwise, it will cause test errors.
Relay action record: This item saves the current value of the last action of the relay on the module. It is only for viewing and cannot
F08
be set.
ID display: This function is only used when the module has RS485 output. User can check the module ID through this function or
F09
user can directly set the ID through the + and - keys on the function interface. No need to connect to a computer.
Key Function Description
Press and hold 3S to enter the function menu interface. After selecting, click this key to enter the setting interface. After entering
SET key
the setting interface, click this key to perform the cursor transposition operation. After the setting is completed, press and hold for
3S to automatically save the data and exit.
Used after entering the function menu or function setting interface.
+ Key
Used after entering the function menu or function setting interface.
- Key
After performing the wrong operation, click this key to return to the previous menu immediately, and the data will not be saved.
ESC key
In the relay manual recovery mode: after the current returns to normal, long press this key to restore the initial state of the relay.
RS485 Modbus - RTU Protocol
The protocol adopts the standard Modbus-RTU protocol, only open 03 and 06 function codes, all commands and replies are in Hex (hexadecimal)
format. Factory ID default: 01
The CRC check is calculated in reverse order of A001 or 8005, and the calculation code is shown in the attachment.
The communication setting format is as follows:
Baud rate
9600 (default)
Menu Feature Description
Data bits
8 bits
4
Check bits
None
Stop bits
1 bit
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