MCW101A, B
Time Proportional Level Controller
BLN-95-8967-4 |
Issued: March 1992 |
DESCRIPTION
The MCW101 Time Proportional Level Controller provides automatic transverse-axis control on paving, curbing and trenching machines by switching an on/off solenoid. Together with the Q625A or MCQ101 Remote Setpoint Unit it senses the difference between setpoint and actual slope with respect to a gravity reference, and provides control signals to reduce either plus or minus errors.
Two modules are housed in the case of the Controller. The slope sensing module electromagnetically measures the deviation between a gravity reference and the equipment it is mounted on. The amplifier module accepts the signal from the sensor and produces a voltage output to drive solenoid valves which, on a typical paving machine, operate lift cylinders to position the tow point of a floated screed. Within the amplifier’s proportional band, the percent of time the output is on is proportional to slope error.
The MCW101A and B are the same with three exceptions: First, the “A” unit is switched on the hot side while the “B” unit is switched on the ground side. Second, the “A” has an internal grade/slope switch and the “B” has an external left/right side switch. Third, on the “A” model the deadband adjustment is a multiple turn trim potentiometer, while on the “B” model it is a single turn trim potentiometer.
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FEATURES |
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Rugged aluminum housing |
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Reverse polarity and short circuit protected |
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Adjustable deadband varies sensitivity |
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Moisture and corrosion resistant |
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RUN/STANDBY |
switch permits |
operator to switch to |
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Withstands vibration and shock |
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manual control |
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Accepts remote slope setpoint |
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Dual clockwise/counterclockwise tilt lamps show devia- |
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tion from setpoint in RUN and STANDBY modes. |
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Models for both 12 and 24 Volt systems |
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Proportional output suitable for driving on-off solenoids |
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ORDERING INFORMATION |
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SPECIFY |
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ACCESSORIES |
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1. |
Model Number MCW101A or B. |
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1. |
Q625A or MCQ101, Remote Setpoint |
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2. |
Voltage, 12 or 24 Vdc |
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KW01015, two foot coiled cable for power and output |
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Accessories |
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KW01001, two foot coiled cable for panel-mount Remote |
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TABLE A. |
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Setpoint |
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ORDER NUMBER |
VOLTAGE |
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TYPE OF OUTPUT |
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MCW101A1023 |
12 Vdc |
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Hot Side Switching |
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MCW101A1031 |
24 Vdc |
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Hot Side Switching |
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MCW101B1006 |
12 Vdc |
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Ground Side Switching |
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MCW101B1014 |
24 Vdc |
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Ground Side Switching |
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© Danfoss, 2013-09 |
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BLN-95-8967-4 |
1 |
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TECHNICAL DATA
ELECTRICAL |
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MAXIMUM VOLTAGE DROP (3 amp load current) |
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3.5 Vdc |
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OPERATING VOLTAGE |
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12 Volt Model: 11 to 15 Vdc |
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CURRENT OUTPUT |
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24 Volt Model: 22 to 30 Vdc |
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3 amps, maximum |
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SUPPLY CURRENT |
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REVERSE POLARITY PROTECTION |
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0.6 amps maximum, not including output current to the |
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200 Vdc, maximum |
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valve |
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SHORT CIRCUIT PROTECTION |
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Full, with 0.5 ohm maximum resistance |
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BLOCK DIAGRAM - High Side Switching |
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V |
3Hz |
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t |
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+ |
V |
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- + |
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Microsyn |
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Gain |
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potentiometer |
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V |
440Hz |
f |
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V |
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t |
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F |
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Voltage regulator |
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V |
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V |
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+ |
- |
t |
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Battery |
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1605 |
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DIMENSIONS
1158
Dimensions of the MCW101 in Millimeters (Inches).
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BLN-95-8967-4 |
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