JFY-801 User's Guide

I. Product Overview

This product is an intelligent motor integrated protection, is the traditional thermal relay upgrade products. The product uses digital processing technology, high brightness LED display, built-in three-phase current transformer to detect the load current of the motor can be displayed according to the current three-phase current and determine whether there is an overload, underload, phase loss, phase current imbalance and other failures. In the event of the failure, the internal relay contacts open, cutting off power to the motor.

Second, the main function

 current display

 Overload

 underrun protection

 lack of protection

 phase unbalance protection

 automatic recovery

 fault current lock

 Built-in time relay function

Third, the main technical indicators

Indicators Model Unit

JFY-801 JFY-802 JFY-808 JFY-811 JFY-813

Rated current setting range 1 ~ 100 1 ~ 30 3 ~ 90 1 ~ 1000 0.2 ~ 10 A

Current Range 150 150 450 1000 15 A

Current measurement accuracy ± 1% -

Supply voltage AC 220V V

Contact capacity 3A / 440VAC (pure resistive load) -

Fourth, the operation guide

 View A, B, C phase current

Normal operation shows the average three-phase current, press "Sel" key to switch the display A, B, C phase current. Overload, underload, phase, display the current flashing, indicating that it is locked in the failure of the current moment (when the motor is powered off, the actual current is 0), phase imbalance fault.

 rated motor current set value (setting current)

Press "Sel" key for 2 seconds to display the "Settings" and change key with "" or "" setpoint (hold "" or "" button pressed bursts), set up after the press "Sel" key to exit the setup.

 alarm (protection) state recovery

Overload, underload, when the phase or three-phase imbalance alarm in the display flashes "Overload", "underrun", "Phase", "unbalanced" and other words, the relay off, and locked in the OFF state. Then just press "" or "" key to lock the state recover from protection.

 parameter settings

Under the current status display, press "" button for 5 seconds to enter the parameter setting state, then display "Fxx" on the display, where xx is a two-digit number indicates the parameter code. With "" or "" keys to select the parameter code, press "Sel" key to display the parameter values corresponding to the parameter code, then then "" or "" button to set the parameter setting then finished press "Sel" key to return to display the parameter code status.

Internal parameter code as follows:

Category CodeParameterNameSettingRange Default Unit Remarks

Rated motor current overload protection class F11

(Setting current) JFY-801 1.0 - 100 20 A This parameter can be set long press Sel

JFY-802 1.0 - 30.0 10

JFY-808 3.0 - 90.0 20

JFY-811 1 ~ 1000 20

JFY-813 0.2 ~ 10 3

F12 inverse curve 0--51--0 expressed definite time, 1-5 for the inverse, see the works illustrate, JFY-801 is no such argument

F13 definite time operation time of 0.1 - 60.0 3.0 seconds in the works when F12 = 0

Underrun protection class F14 underrun action point 0 - 80 to 20% lower than the rated current of the current (F11) set percentage, produce underload alarm

F15 underrun action time 0.1 - 60.0

OFF OFF seconds "OFF" to disable the underrun protection,

Phase and three-phase unbalanced class F21 Unbalanced action point 1--5020%

F22 Unbalanced action time 0.1 - 60.0

OFF 5.0 秒 phase or three-phase unbalanced action time is set to "OFF" to disable the phase or three-phase unbalance alarm function

F23 phase action time 0.1 - 60.0

OFF 2.0 秒

Automatic recovery class F51 automatic recovery times 0--101 times F51 is set to 0 indicates no automatic recovery;

The setting method, see instructions works

F52 automatic recovery interval 0.1 - 99.9 15.0 minutes

F53 repetition time between failures 1--99960 分鐘

Additional features on the class F61 Power-up 0--9990 秒 energized several seconds and then pull the relay, the equivalent of a time relay function

End exit the setup -

Fifth, the basic working principle

 current detection

Built-in current transformer to detect the load current, so the motor is protected three-phase line must pass through three holes of the current transformer.

 Overload

Overload protection can be divided into definite time and inverse time protection modes, JFY-801 only definite time mode, JFY-802, JFY-808 F12 can select definite time or inverse time mode by setting the parameters.

1. definite time mode

When the load current exceeds the rated current (parameter F11), and the duration of action to achieve the set overload time (parameter F13), the relay off, cut off power to the motor. That overload action time is fixed.

2. Inverse Mode

Overload and overload current action time related to the size, the more the load current exceeds the rated current, the shorter the operating time. You can select a different inverse curves according to different characteristics of the motor, JFY-802,808 offers five inverse curve, as follows:

Overload multiple inverse curve (F12)

123450

1.1 930 1861 2791 3721 4651 F13

(Definite time)

1.2 296 59388911851482

1.5 87174261349436

23569104138173

31325385163

4 6.7 13,202,734

5 4.2 8.4 131 721

6 2.9 5.7 8.6 1214

7 2.1 4.2 6.3 8.4 10

8 1.6 3.2 4.8 6.4 7.9

The above is the overload operation time (unit: second)

 underrun protection

When the load current drops below the set point (parameter F14), and the duration of action to achieve the set underload time (parameter F15), the relay off, cut off power to the motor. This feature is off by default, set the parameters F15 when needed.

The load current is too small, not underrun detect, prevent malfunction in the motor off state.

 phase unbalance protection

Definition phase unbalance rate is: any one phase current and three-phase absolute value of the difference between the average current, whichever is maximum, divided by the average three-phase current, that is a three-phase unbalance.

When the phase unbalance rate is greater than the set point of the three-phase unbalanced action (parameter F21), and lasts longer than the three-phase unbalanced action time (parameter F22), the relay off, cut off power to the motor.

The load current is too small, not to unbalance detect, prevent malfunction in the motor off state.

 lack of protection

Phase can be considered a serious phase unbalance, phase unbalance when greater than 50%, that phase. Phase of the action time set by parameter F23, generally longer than the three-phase unbalanced action time (parameter F22) shorter.

The load current is too small, not phase detect, prevent malfunction in the motor off state.

 automatic recovery

Automatic recovery feature is intended to protect shutdown when a fault occurs, have the opportunity to automatically return to work, to prevent unattended equipment failure due to sporadic downtime. You can use the parameters F51, F52, F53 is free to set the automatic recovery actions: for example F51 = 3, F52 = 15, F53 = 60, the effect is: after a fault shutdown, over 15 minutes automatic recovery (F52 = 15), so can retry 3 times (F51 = 3), if a fault occurs repeatedly over three times and repeat the failure interval shorter than 60 minutes (F53 = 60), then locked in stop mode, you need to manually restore (press "" button or power).

If you do not auto-recovery function, as long as the F51 is set to 0.

 time relay function

If enabled by setting the parameter F61 relay function, the rear protection energized, the relay is not immediately pull, but then pull the delay period, the delay time is set by the parameter F61, then carried on the LCD countdown display. Equivalent to a delayed start time relay function. F61 = 0 to disable the time relay function.

Six Dimensions

Seven, wiring diagrams

Three-phase lines, respectively, through the motor 1. A, B, C three holes

2. Terminal 1 is the internal relay normally open, normally closed 2 points, 3 points for the public. Protection in case of power failure, the internal relay is in the released state, 1,3-off, after 2,3 pass, energized, the relay immediately energized (if time relay function is enabled, the delay pull, see parameter F61) 1,3 through 2,3-off, turn on power to the motor control. In the event of an overload, phase loss, phase imbalance fault, the relay is released, disconnect the power to the motor.