Manitowoc 2250 Service And Maintenance Manual

Reference Only
Manitowoc Published 11-06-15, Control # 040-13 3-49
2250 SERVICE/MAINTENANCE MANUAL ELECTRIC SYSTEM
3
4. MAX-ER State/Faults (total of number(s) listed):
1 = Tray high on left side (CWT level is more than 3.0
degrees).
2 = Tray high on right side (CWT level is less than -3.0
degrees).
4 = Each strap cylinder load is below 20,000 lbs. Value 4
does not trigger a MAX-ER fault.
8 = NOT Used.
16 = Left rod side pressure transducer out of range
(below 0.6 or above 9.0 volts).
32 = Right rod side pressure transducer out of range
(below 0.6 or above 9.0 volts).
64 = Differential pressure (one side taking 2100 psi more
than other side.
128 = Piston pressure transducer out of range (below
0.6 or above 9.0 volts).
5. Current Production: MAX-ER Controller
Communication Status: 0 = Good. Any other number
indicates a problem with MAX-ER controller
communication to the crane controller. Contact the
Manitowoc Crane Care Lattice Team.
Past Production: Proportional Cylinder Command
0 = Off and 254 = On.
6. Right Strap Cylinder Rod Side Pressure (0-3,000 psi [0-
207 bar])
7. Left Strap Cylinder Rod Side Pressure (0-3,000 psi [0-
207 bar]).
8. Strap Cylinder Piston Side Pressure (0-3,000 psi [0-207
bar])
9. Strap Cylinder Command (0 = idle, 1 = raise tray, 2 =
lower tray)
A1 (Handles)
The variable control handle output voltage is represented in
the controller by a number between 0 (0 Volts) and 255 (10
Volts). The diagnostic screen A1 displays this number for
each of the control handles/pedals. The normal operating
outputs of the handles range from:
• Approximately 38 (1.5 Volts) to 120 (4.7 Volts) for lower/
reverse/right. Some dual-axis handles (joysticks) are
internally limited and will not put out the full range stated.
• Approximately 136 (5.3 Volts) to 215 (8.5 Volts) for raise/
forward/left. Some dual-axis handles (joysticks) are
internally limited and will not put out the full range stated.
• A switch opens when the handle is in the neutral range
(4.7 – 5.3 volts). In the neutral range, the screen reads 0.
Banks:
1. Handle 1 - Right Rear or Front Load Drum
2. Handle 2 - Left Rear or Rear Load Drum
3. Handle 3 - Boom/Luffing/Mast Hoist
4. Handle 5 - Right Track
5. Handle 6 - Left Track
6. Handle 4 - Swing
7. Handle 7 - Auxiliary Load Drum or Luffing Hoist with
Independent Pump
A2 (Programmer’s Screen)
1
6
2
7
3 4 5
A1
A2
Disregard information in this screen.
For factory programmer’s use only

Manitowoc 2250 Specifications

General

Brand	Manitowoc
Model	2250
Category	Construction Equipment
Language	English