Adjustment of xlcxls series device of the hottest

2022-08-24
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Adjustment of xlc/xls series devices of motor soft starter

the motor is most advantageous to start under full load, and the slope setting of suitable time and torque can be obtained. Note that the potentiometer has only a three quarter turn adjustment range. If the potentiometer is adjusted beyond this range, this component will be damaged. The factory settings can meet the motor use conditions of most users. Adjust the potentiometer as shown in the figure

(I) acceleration adjustment

factory settings are based on typical applications. Try resetting before the system is ready to start. If the motor does not reach full speed, increase the current limit, and if the motor does not rotate immediately, increase the initial voltage, which requires accelerated adjustment. There are three adjustable quantities in the acceleration process, which are described one by one below. See figure

figure adjustment potentiometer

figure acceleration adjustment

1 Initial voltage setting/rotation check

factory set starting torque =60% line voltage; Range =0 ~ 100% line voltage

the initial torque can be achieved by adjusting the initial starting voltage of the motor. When adjusting the starting voltage, remove the slope function and turn the SW switch to the "off" position. When adjusting, turn the potentiometer clockwise (start voltage) as shown in the figure to increase the torque (voltage). Add the start command to xlc/xls. If the motor just starts to rotate, the initial torque will be adjusted to the best. If the motor does not rotate, the shore a hardness should be related to the displacement of the indenter Adjust the potentiometer by measuring the displacement of the pressure needle to increase the starting torque. If the motor rotates too fast, adjust the potentiometer counterclockwise to reduce the starting torque

note: do not keep switch SW off all the time

2. Ramp time adjustment

factory setting =10s; The range of slope adjustment is 0 ~ 60s

adjusting the ramp time can change the time to reach the current limiting point, and the acceleration time (ramp time) can be achieved by adjusting the ramp potentiometer (ramp time) clockwise. Adjust the ramp time after adjusting the initial torque, and slowly turn the ramp potentiometer until the ramp time is satisfactory. Stop the motor and start the motor again to see whether it meets the acceleration requirements of the motor that the assumed problem cannot be solved

3. Current limiting adjustment

the current limiting value set at the factory is 350% fla; The adjustable range of current limiting is 200% - 500% Fla

The main function of current limiting is to suppress the peak current, which can be used to extend the ramp time if necessary. The interaction between the voltage ramp and the current limit will allow the accelerated motor to reach the maximum current and make the current limit meet the needs. The current limit must be set high enough to make the motor run at full speed. 350% of the factory setting is a typical starting value. For motors with frequent load changes, do not set the current limit too low to avoid stalling the motor and eventually causing overload tripping of the motor

(II) deceleration adjustment

soft stop extends the downtime to slow down the load to stop. In order to meet the requirements of rubber tensile test, three adjustable quantities can optimize the deceleration curve to meet most requirements. Try the factory setting before adjustment, as shown in the figure

the machine is set as soft stop invalid at the factory, and the switch SW is set to off to make it effective before adjustment. Before making the soft stop effective, the soft start must be adjusted first. Both the soft start and the soft stop should be under normal load conditions. The soft stop and the soft start are adjusted in the same way. The clockwise potentiometer is the increase setting, and the counterclockwise potentiometer is the decrease setting

1. Step down voltage adjustment

factory set starting torque =60% line voltage; Range =0 ~ 100% line voltage

the starting deceleration voltage can be adjusted to the voltage value that makes the motor just start to decelerate through repeated tests. This characteristic makes the voltage suddenly drop from the full voltage to the set value

2. Stop voltage level

factory set starting torque =20% line voltage; Range =0 ~ 100% line voltage

the stop voltage value is set to immediately reduce the deceleration voltage to zero and completely stop the motor

3. Gradient ramp time

factory setting =5s; The range of slope adjustment is 0 ~ 30s

adjust the time when the deceleration ramp time reaches the stop voltage value, and repeatedly start/stop the set time. As shown in the figure

note: do not exceed the number of times the motor is allowed to start per hour. Soft stop is also regarded as a start when calculating. For example, if it is allowed to start 6 times per hour, then it is allowed to start 3 times with soft stop

figure deceleration adjustment

figure bimetal environment overload relay adjustment panel

(III) adjustment of thermal overload relay

thermal overload adjustment is only effective for XLS series, and xlc series has no such adjustment function. Xls series provides motor overload protection through adjustable thermal overload relay. Standard XLS is equipped with level 10 thermal overload protection. Level 10 overload protection provides current with rated value of 600% and 10s protection relay action. As an option, level 20 overload protection will open circuit at 600% current for 20s (the difference between xlc and XLS is that xlc has no overload relay)

1. Overload relay adjustment

bimetallic environment compensation overload relay can adjust the range of full load current (FLA) by setting the dial (Figure) marked with ABCD. The overload relay will open circuit at 125% fla (for motor load factor of 1.15) and 115% fla (for motor load factor of 1.0), For the motor control device with lower power, it can be set by directly adjusting the dial on the adjusting wheel of the overload relay

figure xlc/xls series main circuit board figure

2 Full load current

the value of FLA is marked on the overload adjustment dial. The letter ABCD can know the current value on the corresponding dial. When the motor load is 1.15, adjust fla to the corresponding motor rated current. When the motor fla value is between two letters, adjust the dial. When the operating load factor of the motor is 1.0, rotate the FLA dial as shown in the figure

note: some relays are marked with motor current, which should be set according to the actual motor current

warning: in order to prevent fire and electric shock, if the heating element of the relay is found to be burnt out, the whole relay should be replaced

3. Manual/automatic reset

the overload relay with factory setting "m" is in the manual position (manual reset is recommended). Turning the reset scale marked with "a" and "m" to the "a" position is the automatic reset state. In order to avoid overheating or automatic starting of the motor when the motor is overloaded, two-wire control contacts should be added, so that the starter contact will be out of position when the circuit is open. When the user installs the housing himself, the warning board should be pasted on the front of the housing or equipment as required

note: when automatic starting is selected, the starting warning on the dial must be installed, and it is written:

warning 1 Sorting of waste plastics: the motor connected to the equipment will start automatically without prior operation

4. Trip check

check the overload open circuit tripping function in the manual reset state, press the test key on the overload relay, and the indicator signal will display "overload" when the controller is open circuit. Press the reset button on the overload relay and the reset button on the board to clear the error (see the position of the reset button on the main board diagram). This check ensures that the motor protection function works

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