Danfoss MCW101A, MCW101 B Installation guide
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.
MCW101A, B
Time Proportional Level Controller
BLN-95-8967-4 Issued: March 1992
FEATURES
• Rugged aluminum housing
• Adjustable deadband varies sensitivity
• RUN/STANDBY switch permits operator to switch to
manual control
• Dual clockwise/counterclockwise tilt lamps show deviation from setpoint in RUN and STANDBY modes.
• Proportional output suitable for driving on-off solenoids
ORDERING INFORMATION
SPECIFY
1. Model Number MCW101A or B.
2. Voltage, 12 or 24 Vdc
3. Accessories
TABLE A.
• Reverse polarity and short circuit protected
• Moisture and corrosion resistant
• Withstands vibration and shock
• Accepts remote slope setpoint
• Models for both 12 and 24 Volt systems
ACCESSORIES
1. Q625A or MCQ101, Remote Setpoint
2. KW01015, two foot coiled cable for power and output
3. KW01001, two foot coiled cable for panel-mount Remote
Setpoint
ORDER NUMBER VOLTAGE TYPE OF OUTPUT
MCW101A1023 12 Vdc Hot Side Switching
MCW101A1031 24 Vdc Hot Side Switching
MCW101B1006 12 Vdc Ground Side Switching
MCW101B1014 24 Vdc Ground Side Switching
© Danfoss, 2013-09 BLN-95-8967-4 1
TECHNICAL DATA
BLN-95-8967-4
ELECTRICAL
OPERATING VOLTAGE
12 Volt Model: 11 to 15 Vdc
24 Volt Model: 22 to 30 Vdc
SUPPLY CURRENT
0.6 amps maximum, not including output current to the
valve
BLOCK DIAGRAM - High Side Switching
Microsyn
V
440Hz
t
MAXIMUM VOLTAGE DROP (3 amp load current)
3.5 Vdc
CURRENT OUTPUT
3 amps, maximum
REVERSE POLARITY PROTECTION
200 Vdc, maximum
SHORT CIRCUIT PROTECTION
Full, with 0.5 ohm maximum resistance
V
3Hz
t
+
-
f
V
V
+
Gain
potentiometer
DIMENSIONS
F
Battery
Voltage regulator
V
-+
t
V
1605
1158
Dimensions of the MCW101 in Millimeters (Inches).
2
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