Df-j40 on-board microcomputer control system mainly plays the functions of locomotive traction, braking, diesel engine speed regulation, locomotive logic control, adhesion control, low constant speed, diesel engine and electrical system protection, and man-machine interface. Df-j40 microcomputer control system is applicable to DF7C electric drive diesel locomotive produced by Beijing Erqi Rail Transit Equipment Co., Ltd. subordinate to CRRC group.
Df-j40 on-board microcomputer control system consists of 13 plug-in boards.
No. 1 microcomputer plug-in board is an auxiliary CPU board
No. 2 microcomputer plug-in board is the main CPU board
No. 3 microcomputer plug-in board is an analog input board
No. 4 microcomputer plug-in board is a frequency input board
No. 5 microcomputer plug-in board is switch input board 1#
The No. 6 microcomputer plug-in board is the switching value input board 2#
No. 7 microcomputer plug-in board is relay output board 1#
No. 8 microcomputer plug-in board is relay output board 2#
No. 9 microcomputer plug-in board is the excitation board
The No. 10 microcomputer plug-in board is the speed regulating board of diesel engine
No. 11 Microcomputer plug-in board is a standby stepless speed regulation board
No. 12 microcomputer plug-in board is a 2# power board
No. 13 microcomputer plug-in board is a 1# power board
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