Manitowoc 777 Service And Maintenance Manual

Reference Only
ELECTRIC SYSTEM 777 SERVICE MANUAL
3-16 Published 10-01-2012, Control # 045-08
Left Rear Drum Encoder Channel B 81MBLS E-28 ECB8 7.5 VDC Plus or 0 VDC Not Moving; 3.5 VDC Moving I/O 4 J12-04
Left Side Counterweight Limit 89ZA B-04 DI-4 12 VDC Nominal I/O 1 J6-10
Left Track Handle (Handle 6) 84P A-07 AI-5
0 VDC Neutral; 5 to 1.4 VDC Reverse;
5 to 8.6 VDC Forward
I/O 1 J5-58
Left Track Pump Control (Servo Driver 5) 84A C-23 AO-S5
0 to 2.8 ± 10% (110 Ma ± 10%) VDC Reverse;
0 to -2.8 ± 10% (-110 Ma ± 10%) VDC Forward
I/O 3 J10-41
Left Track Pedal 2 84PF A-13 AI-10
0 VDC Neutral; 5 to 1.4 VDC Reverse;
5 to 8.6 VDC Forward
I/O 2 J7-52
Limit Bypass 89L B-25 DI-25 12 VDC Nominal I/O 2 J8-17
Load Cell 1 SIG 1 A-34 AI-31 0 to10 VDC Nominal CPU J3-56
Load Cell 2 SIG 2 A-35 AI-32 0 to10 VDC Nominal CPU J3-58
Load Cell 3 SIG 3 A-36 AI-33 0 to10 VDC Nominal CPU J3-60
Load Cell 4 SIG 4 A-37 AI-34 0 to10 VDC Nominal CPU J3-62
Load Indicator Display Scroll Down 89ZP A-19 AI-16 12 VDC Nominal I/O 2 J7-64
Load Indicator Display Scroll Up 89ZN A-18 AI-15 12 VDC Nominal I/O 2 J7-62
Load Indicator Select Mode 89ZL A-15 AI-12 12 VDC Nominal I/O 2 J7-56
Rated Capacity Indicator/Limiter 89P B-24 DI-24 12 VDC Nominal I/O 2 J8-16
Luffing Jib Angle Indicator 87BA A-21 AI-18 3.33 VDC at 0°F; 6.66 VDC 60°F; 7.88 VDC at 82°F CPU J3-51
Luffing Jib Maximum Down Limit 89S1 B-15 DI-15 10 VDC Nominal I/O 2 J8-07
Luffing Jib Maximum Up Limit 89W1 B-14 DI-14 10 VDC Nominal I/O 1 J6-20
Maximum Boom/Luffing Angle Limit Bypass 89ZZ B-11 DI-11 12 VDC Nominal I/O 1 J6-17
Operating Limit Alarms 25A C-28 DO-14 12 VDC Nominal I/O 2 J8-27-28
Rear Drum Band Brake 81E C-08 DO-2 12 VDC Nominal I/O 1 J6-23-24
Rear Drum Disc Brake Park Switch 89Z3 D-09 DI-38 12 VDC Nominal (when brake is applied) I/O 3 J10-16
Rear Drum Disc Brake Solenoid 81Q C-19 DO-9 12 VDC Nominal I/O 1 J6-37-38
Rear Drum Flange Direction Encoder
Channel B2
81MB D-04 ECB2 7.5 VDC Plus or 0 VDC Not Moving; 3.5 VDC Moving I/O 1 J6-04
Rear Drum Flange Speed Encoder
Channel A2
81MA D-03 ECA2 7.5 VDC Plus or 0 VDC Not Moving; 3.5 VDC Moving I/O 1 J6-03
Rear Drum Free Fall Enable 89X2 B-21 DI-21 12 VDC Nominal I/O 2 J8-13
Rear Drum Free Fall Light 81DS C-36 DO-20 12 VDC Nominal I/O 2 J8-39-40
Rear Drum Handle (Handle 2) 81P A-04 AI-2
0 VDC Neutral; 5 to 1.4 VDC Lower;
5 to 8.6 VDC Raise
I/O 1 J5-52
Rear Drum Motor Control Right and Left
Side
81S D-25 AO-2
0 VDC Up to 1/3 Handle Movement;
0.96 to 2.19 VDC 1/3 to Full Handle Movement
I/O 2 J8-06
Rear Drum Maximum Bail Limit 89U B-07 DI-7 12 VDC Nominal I/O 1 J6-13
Rear Drum Minimum Bail Limit 89S B-08 DI-8 12 VDC Nominal I/O 1 J6-14
Rear Drum Pump Control (Servo Driver 2) 81A C-06 AO-S2
0 to 2.8 ± 10% (110 Ma ± 10%) VDC Up;
0 to -2.8 ± 10% (-110 Ma ± 10%) VDC Down
I/O 1 J6-42
Rear Drum Pawl In 89M3 B-30 DI-30 12 VDC Nominal I/O 3 J10-08
Rear Drum Rotation Indicator 81N D-28 DO-23 12 VDC Nominal I/O 3 J10-25-26
Rear Drum System Pressure (Pump 1A) 81QS A-23 AI-20 1 VDC at No Pressure; 1.2 VDC at 300 PSI CPU J3-55
Receptacle Insert NC B-37 Key 12 VDC Nominal
Right Front Drum Clutch Free Fall 80FRS C-16 DO-6 12 VDC Nominal I/O 1 J6-31-32
Right Front Drum Clutch Switch 89ZE B-22 DI-22 12 VDC Nominal I/O 2 J8-14
Right Front Drum Shaft Direction Encoder
Channel B5
80MBRS E-04 ECB5 7.5 VDC Plus or 0 VDC Not Moving; 3.5 VDC Moving I/O 3 J10-02
Right Front Drum Shaft Speed Encoder
Channel A5
80MARS E-03 ECA5 7.5 VDC Plus or 0 VDC Not Moving; 3.5 VDC Moving I/O 3 J10-01
Right Rear Drum Clutch Free Fall 81FRS C-17 DO-7 12 VDC Nominal I/O 1 J6-34-33
Description Wire # Pin # I/O #
Test Voltage
(DC unless otherwise specified)
Connection
(Signal Type)

Manitowoc 777 Specifications

General

Brand	Manitowoc
Model	777
Category	Construction Equipment
Language	English