ELECTRIC SYSTEM 2250 SERVICE/MAINTENANCE MANUAL
3-24
Published 11-06-15, Control # 040-13
Crane Mode Select Switch B-24 89S2 12 volts Nominal I/O 2 (DI)
Display Scroll Down Switch B-33 89K 12 volts Nominal I/O 3 (DI)
Display Scroll Up Switch B-26 89J 12 volts Nominal I/O 2 (DI)
Engine Oil Pressure Switch D-08 89T3 12 volts Nominal I/O 3 (DI)
Engine RPM Sender D-07 24
7.5 volts or 0 volts Not Moving;
3.5 volts Moving
I/O 1 (DI)
Engine Coolant Temperature Switch D-09 89U3 12 volts Nominal I/O 3 (DI)
Engine Throttle (Current) A-09 68KA 0.101 Volts to 10.09 Volts I/O 1 (AI)
Engine Throttle Input/Output (Current) A-10 68K Variable I/O 1 (AI)
Equalizer & Physical Boom Stop Limit Sw. D-13 89C2 12 volts Nominal I/O 3 (DI)
Front Drum Clutch Solenoid C-16 80F 12 volts Nominal I/O 1 (DO)
Front Drum Flange Encoder CHA E-01 80MA
Above 7.5 volts or 0 volts Not Moving;
3.5 volts Moving
I/O 2 (DI)
Front Drum Flange Encoder CHB E-02 80MB
Above 7.5 volts or 0 volts Not Moving;
3.5 volts Moving
I/O 2 (DI)
Front Drum Free Fall Light D-26 80DS 12 volts Nominal I/O 3 (DO)
Front Drum Park Switch B-18 89Y3 12 volts Nominal I/O 2 (DI)
Front Drum Parking Brake Solenoid C-07 80E 12 volts Nominal I/O 1 (DO)
Front Drum Pawl In Solenoid D-33 80C 12 volts Nominal
I/O 3 (DO)
Front Drum Pawl In Switch (Past) B-31 89L3 12 volts Nominal I/O 3 (DI)
Front Drum Pawl Out Solenoid E-35 80CA 12 volts Nominal
I/O 4 (DO)
Front or Right Rear Drum Handle A-03 80P
0 volts Neutral; 1.4 to 5 volts Lower;
5 to 8.6 volts Raise
I/O 1 (AI)
Front or Right Rear Drum Rotation Indicator C-26 80N 12 volts Nominal
I/O 2 (DO)
Front or Right Rear Free Fall Safety Switch B-23 89M 12 volts Nominal I/O 2 (DI)
High Speed Travel Switch B-15 89L1 12 volts Nominal I/O 2 (DI)
Hydraulic Fluid Level Sender A-18 98F 5.2 volts Low Level; 1.2 volts High Level I/O 2 (AI)
Hydraulic Fluid Temperature Sender A-17 42 1.3 volts at 155°F; 5.56 volts at 95°F I/O 2 (AI)
Hydraulic Vacuum Switch A-31 98Q
1 volt at 30 inches of Mercury (Hg);
2.3 volts at 0 psi
I/O 3 (AI)
Independent Hoist Pump Control 1 C-20 87A
0 to 2.8 volts Engine Running;
0 to 2.4 volts Engine Off
I/O 1 (DO)
Independent Hoist Pump Control 2 C-29 87B
0 to 2.8 volts Engine Running;
0 to 2.4 volts Engine Off
I/O 2 (DO)
Independent Luffing Hoist Hydraulic System
Pressure Sender
A-19 87QS 1.2 volts at 300 psi; 1 volt at 0 psi I/O 2 (AI)
Jacking/Set Up Remote B-12 89D4 12 volts Nominal I/O 1 (DI)
Jacking Remote Level Alarm & Light C-36 25B 12 volts Nominal I/O 2 (DO)
Jacking Remote or MAX-ER Steering System B-11 89D1 12 volts Nominal I/O 1 (DI)
Jumper to Signal Board Controller (Lights) C-11 38 12 volts Nominal I/O 1 (DO)
Left Rear Drum Clutch Solenoid C-18 81FL 12 volts Nominal I/O 1 (DO)
Left Rear Drum Flange Encoder CHA E-05 81MAL
Above 7.5 volts or 0 volts Not Moving;
3.5 volts Moving
I/O 3 (DI)
Left Rear Drum Flange Encoder CHB E-06 81MBL
Above 7.5 volts or 0 volts Not Moving;
3.5 volts Moving
I/O 3 (DI)
Description Pin Wire
Test Voltage
(DC unless otherwise specified)
Board
(Signal Type)
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