Description
4 Digit Digital Milliammeter Signal Generator Current 0-4-20mA 50HZ Active Simulate Debugging PLC Valve DCS Control
Product Description
The current loop signal generator is an active connection method, commonly used PLC inverter servo valves, etc. can be connected; this current loop signal generator uses a digital encoder knob, the power-off save method is: press the knob to save the output value, then You can turn it at will, turn the knob at will, the next time you turn on the power, the value saved last time, you are not afraid of chaos, and you are not afraid of high current when you turn on! Various output ranges, display modes, adjustment turns, calibration, etc. can be set. Current loop dedicated chip, high-power transistor, can work stably for a long time.
A variety of displays can be set: 20.00MA 100.0% 50.0HZ Various outputs can be set: 0-20MA 4-20MA 0-22MA Coarse and fine adjustment dual modes, and the number of laps can also be set separately The minimum adjustment number of the knob is 0.01MA; the actual error after calibration is 0.01MA, high-precision linear output 4-digit 0.4-inch high-brightness large digital tube, the display is clearly visible, the digital encoder knob is durable, not affected by the loop mirror, and the power supply is protected by reverse connection. Output can be short-circuited
Specification
|
item
|
value
|
|
Power supply voltage
|
15V~30V
|
|
Output current
|
0mA~22mA
|
|
Sampling resistance
|
10 ohms~500 ohms; 1.4 adjustment accuracy: 0.01mA;
|
|
Output accuracy
|
0.01mA;
|
|
Number of pulses per turn of encoder knob
|
20
|
|
Dimensions (front)
|
79.5*42MM
|
|
Dimensions (rear)
|
72.5*39.5MM
|
|
Hole size
|
77*40MM
|
Installation Instructions
System operation
(the "confirm key" is: press the knob down, turn clockwise to "+", turn counterclockwise to "-"): 1 Short press the OK button on the normal operation screen to save the output value. After releasing it, the screen displays "...", the save is successful, the output value will be the saved value after the next startup; when debugging the device, we need to adjust the output value randomly , As long as the encoder knob is not pressed, the original value will be saved after restarting;
2. Parameter setting: 2.1 In the normal operation screen, press and hold the confirm button for 2 seconds to enter the setting state, and display "F001" (parameter number 001); 2.2 Rotate the knob to change the parameter number (the first time you enter F002, you need to enter the password "+--+ (rotate the knob)"); 2.3 On the parameter number interface, press the enter key to enter the corresponding parameter value setting, and turn the knob to modify the parameter; 2.4 Press the enter key to save the parameter, exit the parameter setting, and display the next parameter number (after setting the value of F001 without inputting the password, it will enter the normal operation screen); 2.5 Rotate the knob directly to the last parameter number, press the OK key, the setting is completed and enter the normal operation screen; 2.6 If there is no operation on the parameter setting screen for more than 10s, it will exit the setting state and enter the normal operation screen;
Parameter description table: To enter F0O2, you need to enter the password "+--+ (rotating knob)"
F001, coarse adjustment or fine adjustment; 0: coarse adjustment 1: fine adjustment, default 0 F002, output mode; 0:0-20mA 1:4-20mA 2:0-22mA, default 0 F003, display mode; 0: actual current 1: percentage ratio 0-100.0 2: 50HZ, default 0 F004, Coarse adjustment mode plus and minus value/each pulse, 1-50 plus and minus number for each pulse, no decimal point concept (1-50) X 10, default 1 F005, fine-tuning mode plus and minus value/each pulse, 1-50 plus and minus number for each pulse, no decimal point concept (1-50), default 1 F006, output calibration value, -999-+999 is for internal reference only, please be cautious about 20mA±4mA when modifying
Coarse and fine adjustment dual modes, and the number of laps can be set separately
Fine-tuning mode: the last number plus or minus 1* (coefficient 1-50) Coarse adjustment mode: add and subtract 1* to the penultimate digit (coefficient 1-50); Two coefficients can be set separately Fine-tuning mode minimum 0.01MA/each pulse Coarse adjustment mode up to 5MA/each pulse Note: One turn of the knob is 20 pulses, so: 0MA to 20MA fine-tuning mode requires a maximum of 100 cycles, The coarse adjustment mode only needs 1/4 turn at least. Precautions 1 Please read this manual carefully before wiring; 2 Turn off the power before wiring; 3 Exceeding the range shown in the technical indicators may cause the instrument to work abnormally or even be damaged;
Details Images