MCW102A,C
Time Proportional Rotary Position Controller
BLN-95-9048 |
Issued: March 1995 |
DESCRIPTION
The MCW102A and MCW102C Time Proportional Rotary Posi-
tion Controllers provide automatic grade control on paving, curbing and planing machines. The Controller uses a follower arm riding on a stringline or a ski riding on the prepared surface as a
grade reference. The controllers activate solenoid valves to position a screed, form cutting drum, or steer cylinder.
The MCW102A and C are time proportional devices having valve on - time proportional to grade error. This feature causes the output to the solenoid to be on a greater percentage of the time for larger grade deviations, allowing greater sensitivity to grade deviations than would otherwise be possible. The “A” model is ground-side switched and the “C” model is high-side switched.
FEATURES
• Non-contacting sensing element for long life |
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Rugged aluminum housing |
• Fully burned-in components for added reliability |
• Withstands high vibration and shock |
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• Bright up/down lights for easy nulling |
• Moisture and corrosion resistant |
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• Adjustable deadband sensitivity |
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Easy to mount |
• Run/Standby switch for manual or automatic control |
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Adjustable tracking force |
• Reverse polarity and short circuit protection |
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ORDERING INFORMATION
SPECIFY
1.Model Number MCW102A1005 (ground-side switching) Model Number MCW102C1002 (high-side switching)
2.Valve load to be driven
3.Accessories
4.Service parts
ACCESSORIES
1.KG04003, Right Angle Grade Follower
With breakaway joint. For grade applications only. Follows a stringline. Also used with skate assembly, or skate and ski assembly for following hard reference surface.
4.KG02001, Ski Assembly
For grade applications. Used with right angle grade follower (part number K09274), and skate assembly (part number KG06001) on hard reference surface.
5.Cable Assemblies:
KW01013 – Two-foot coiled cable that extends to ten feet. Has right angle connector on one end and straight connector on the other to make connections between the MCW102 and Bendix Type No. MS3102A18-1P plug (part number K03989).
KW01035 – Two-foot coiled cable that extends to ten feet. Has right angle connector on one end and straight connector on the other to make connections between the MCW102A and the paving machine bulkhead.
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K09274, Right Angle Grade Follower Less Sensing Arm |
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STRAIGHT |
90° |
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For grade applications utilizing the skate and/or skate |
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CONNECTOR |
CONNECTOR |
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and ski assembly. Same as part number KG04003 |
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above, but without the sensing arm and breakaway joint. |
A |
A |
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B |
B |
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3. |
KG06001, Skate Assembly |
C |
E |
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For grade applications. Used with right angle grade |
D |
F |
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follower (part number K09274) on hard reference sur- |
E |
C |
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face. |
F |
D |
© Danfoss, 2013-09 |
BLN-95-9048 |
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ORDERING INFORMATION (continued)
KW01015 – Two-foot coiled cable that extends to ten feet. Has two straight connectors to make connections between the MCW102C and the paving machine bulkhead.
KW01034 – Two-foot coil cable that extends to ten feet, has right angle connector on one end and straight connector on the other end to make connections between the MCW101 and paving machine bulkhead.
STRAIGHT 90°
CONNECTOR CONNECTOR
A A
B B
F E
E F
6.K00702 Lens (service part)
7.K03891 Lamp (service part)
TECHNICAL DATA
ELECTRICAL
SUPPLY VOLTAGE 12 volts
0.5 amps
Does not include output current to load.
MAXIMUM OUTPUT CURRENT @ 14 VDC SUPPLY 2.5 amp with 5 ohm load
The MCW102A has ground-side switching The MCW102C has high-side switching
MAXIMUM REVERSED POLARITY VOLTAGE 50 Vdc for 5 minutes
SHORT CIRCUIT PROTECTION
The controllers are protected against short circuits across the valve coil as well as shorts between the outputs and ground. A short circuit is defined as 1 ohm maximum resistance for 5 minutes maximum.
LOAD DUMP
Protected against load dump per SAE J2.20.97
MECHANICAL
Physical stops limit the rotation to approximately ± 23° from null.
ENVIRONMENTAL
OPERATING TEMPERATURE -18° to 65° C (0° to 150° F)
STORAGE TEMPERATURE -30° to 65° C (-22° to 150° F)
HUMIDITY
After being placed in a controlled atmosphere of 95% humidity at 38° C for 10 days, the controller will perform within specification limits.
RAIN
The controller will withstand exposure to a 15 minute shower with cold water after reaching the maximum storage temperature.
VIBRATION
Withstands a vibration test designed for mobile equipment controls consisting of two parts:
1.Cycling from 5 to 2000 Hz in each of the three axes.
2.Resonance dwell for one million cycles for each resonant point in each of the three axes.
Run from 1 g to 8 g’s. Acceleration level varies with frequency.
SHOCK
50 g for 11 milliseconds. Three shocks in both directions of the three mutually perpendicular axes for a total of 18 shocks.
DIMENSIONS
See the Dimensions Drawing.
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BLN-95-9048 |
DIMENSIONS
1304
Dimensions of the MCW102A, C in Millimeters (Inches).
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BLN-95-9048 |
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