ELECTRICAL SYSTEM 2250 SERVICE/MAINTENANCE MANUAL
3-28
Published 07-19-16, Control # 249-01
DIAGNOSTIC DISPLAY
General
The diagnostic display provides information about the status
of all main crane components as well as the controller inputs
and outputs during operation. Diagnostic screens contain the
following:
• Information about a particular crane function (DRUMS 1
through 9, CRANE SWING, TRACK, ACCUMULATOR,
and MAX-ER 2000)
• Digital outputs (D1) from the controller, digital inputs
(D2) to the controller, control handle inputs (A1) to the
controller, and programmer’s screen (A2)
NOTE: See Figure 3-13
for drum identification.
Drums 1, 2, and 3 (crane load drums)
1. The handle command in percent from neutral (+ raise, –
lower). For certain operating conditions the handle
command is set to neutral by the controller even if the
handle is not in neutral.
2. The pump command in percent from neutral (+ raise, –
lower)
3. The motor command in percent (0% max displacement,
100% min displacement)
4. The measured drum speed in rpm (+ raise, – lower)
5. The command to park brake (1 release, 0 apply)
6. The command to clutch (1 disengage, 0 engage)
7. The measured pump system pressure (port A) in psi
8. The measured pump charge pressure in psi
NOTE: X = The corresponding drum number appears.
Drum 4 (boom hoist)
1. The handle command in percent from neutral (+ raise, –
lower). For certain operating conditions the handle
command is set to neutral by the controller even if the
handle is not in neutral.
2. The pump command in percent from neutral (+ raise, –
lower)
3. The motor command in percent (0% max displacement,
100% min displacement)
4. The measured drum speed in rpm (+ raise, – lower)
5. The command to park brake (1 release, 0 apply)
6. The measured pump system pressure (port B) is in psi
NOTE: X = The corresponding drum number appears.
Drum 5 (luffing or auxiliary hoist)
1. The handle command in percent from neutral (+ raise, –
lower). For certain operating conditions the handle
command is set to neutral by the controller even if the
handle is not in neutral.
2. The pump command in percent from neutral (+ raise, –
lower)
3. The motor command in percent (0% max displacement,
100% min displacement)
4. The measured drum speed in rpm (+ raise, – lower)
5. The command to park brake (1 release, 0 apply)
6. The measured pump system pressure (port B) in psi
NOTE: X = The corresponding drum number appears.
Drum 9 (MAX-ER 2000 load drum)
1. The handle command in percent from neutral (+ raise, –
lower). For certain operating conditions the handle
command is set to neutral by the controller even if the
handle is not in neutral.
2. The pump command in percent from neutral (+ raise, –
lower)
3. The motor command in percent (0% max displacement,
100% min displacement)
4. The measured drum speed in rpm (+ raise, – lower)
5. The command to park brake (1 release, 0 apply)
6. The measured pump system pressure (port B) in psi
NOTE: X = The corresponding drum number appears.
DRUM
X
1
5
2
6
3 4
78
FIGURE 3-14