Manitowoc 2250 Service Maintenance Manual

Reference Only
ELECTRICAL SYSTEM 2250 SERVICE/MAINTENANCE MANUAL
3-30
Published 07-19-16, Control # 249-01
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 9 072 kg
(20,000 lb). 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 145 bar
[2100 psi] more than other side)
128 = Piston pressure transducer out of range (below
0.6 or above 9.0 volts)
5. 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.
6. Right strap cylinder rod side pressure (0 to 207 bar [0 to
3,000 psi])
7. Left strap cylinder rod side pressure (0 to 207 bar [0 to
3,000 psi])
8. Strap cylinder piston side pressure (0 to 207 bar [0 to
3,000 psi])
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:
• Handle 1—Right rear or front load drum
• Handle 2—Left rear or rear load drum
• Handle 3—Boom/luffing/mast hoist
• Handle 5—Right track
• Handle 6—Left track
• Handle 4—Swing
• Handle 7—Auxiliary load drum or luffing hoist with
independent pump
A2 (programmer’s screen)
1
6
2
7
3 4 5
A1
FIGURE 3-22
A2
Disregard information in this screen.
For factory programmer’s use only
FIGURE 3-23

Manitowoc 2250 Specifications

General

Brand	Manitowoc
Model	2250
Category	Construction Equipment
Language	English