24V control box operating instructions
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1、Describtion
（ 1 ）Terminals 1 and 2 are connected to input power supply (24 VDC), and there are no strict requirements for phase line and zero line;
（2）Terminals 3 and 4 are connected with load (24 VDC / 60 W);
（3）Terminals 6yw and 8 - are connected with low oil level signal detection switch (normally open), which is closed and the program controller gives an alarm;
（4）The terminals 7yl and 8- are connected to the pressure switch (normally open) at mode 1. When the mode 2 is connected, the oil supply cycle meter switch is switched on(the switch status is arbitrary);
（5）Terminals A0, A1 and A2 are the contact output ports of fault relay (A0 and A1 are normally closed, A0 and A2 are normally open), which can be connected with alarm or host controller ;
4、 Pa nel Display
The display window has four digit nixie tube, which is used to display the working state of the system and program. The other three LEDs are power indicator (green), pump operation indicator (red) and low oil level alarm indicator (yellow).
υ Key description
“ S ”Function key: used for program step conversion and program browsing.
“ R ” Run key: used to store programming data and start running.
“
”Cursor key: used to set the movement of the flashing (cursor) position of the nixie tube in the state.
“ 
”Setting key: used to set data to change the status of digital tube flicker.
5、 Function and parameter setting
After the power is turned on, the program controller works and displays the data before the power is cut off. Ifyou need to reset, please proceed as follows:
1. Press “S” key and "R" key at the same time to enter the setting mode. In this mode, one cursor flashes.
2. Refer to the function prompt on the left of each setting item in the flowchar
t, and press
“ ” and “ ” to modify the parameters.
3. After a setting is completed, press the "S" key to enter the next setting. (Modify the parameter method phase with)
4. When all data are set, press the "R" key to store the set parameters and start operation.
5. When the program controller is in any working state, press the "R" key to restart according to the stored parameters. This operation can be carried out when the system pipeline is pre filled with oil.
6. When it is necessary to stop the started pump motor, press the “S” and "R" keys at the same time.
7. When the program controller is in any state, press the “S” key to browse the stored parameters without affecting the current state. Stop pressing the button for a moment to return automatically.
8. When the program controller is in any form of alarm state, the internal fault relay acts and the pump stops.
6、 Control mode description
Users should choose the corresponding control mode according to the configured lubrication system (see the description of the top cover). Only when they are very familiar with the working process of the
lubrication system or under the guidance of professional personnel, they can choose another control mode.
1. Time mode (d = 0): (this mode is mainly used in SLR system).
The lubrication system circulates periodically according to the preset oil supply and intermittent time of the program controller.
2. Pressure mode (d = 1): (this mode is mainly used for PDI system).
The oil supply process of the lubrication system is controlled by the pressure switch installed on the lubrication pump or system.
The time from the start-up of the lubricating pump to the system pressure rising to the rated value and the pressure switch acting must be completed within the alarm time set by the controller. In this way, when the pressure switch is closed, the controller will display 4, 3, 2 and 1 in a flashing manner, that is, the pump will stop running after a delay of 4 seconds (to ensure that the pressure is established at the end of the pipeline) That is to complete the oil supply process and enter the interval time.
Otherwise, when the oil supply fault (leakage, blockage, pump damage, etc.) occurs in the system, the time for the system to establish pressure is extended and the alarm time set by the controller is reached, the oil supply fault alarm signal will be sent out, and the digital display "EEPP" (press "s" or "R" key to remove the alarm).
The alarm time should be set according to the actual situation of the system (pipeline length, oil supply volume, etc.), which is generally 4-8 seconds longer than the normal operation time of the pressure switch.
3. Counting mode (d = 2): (this mode is mainly used in PRG system)
The oil supply process of the lubrication system is controlled by the oil supply circulation switch installed on the oil distributor.
After the lubricating pump starts and runs according to the number of cycles set by the program
controller, if the system works normally, the oil outlets on the oil distributor will supply oil in turn. When a oil supply cycle is completed, the micro switch on the oil distributor will send a signal once, and the program controller will count once. When the number of oil supply cycles reaches the set value of the program controller, the output of the program controller will stop and enter the intermittent time.
Once the lubrication system fails (blockage, leakage, pump damage, etc.), when the action time of the circulation switch is extended to the alarm time set inside the program controller (5 minutes, not adjustable), the program controller will send out the oil supply fault alarm signal, the pump stops, and the digital tube will flash at the current value.
7、 Technical parameters of programmable controller
Input power：24VDC±10% Fuse value：￠ 5*20 ，5A
Control load power：60W Seismic grade ：5G
Contact capacity of fault relay：24V ， 30W Ambient temperature ：-20℃---60℃
