W894A
Proportional Level Controller
BLN-95-8974-5
Issued: March 1992
DESCRIPTION
The W894A Proportional Level Controller provides auto-
matic slope control of paving, curbing, grading and similar
mobile equipment. The Controller measures deviation from
a gravity reference and supplies a two-wire output for driving
a servovalve such as the MCV113. The W894A operates in
12 Volt electrical systems.
Two modules are housed in the case of the Controller with
plug-in electrical interconnections. The transducer sensing
module electromagnetically measures the deviation of the
equipment it is mounted on from a gravity reference. The
amplifier module accepts the signals from the slope sensing
module and uses the deviation to provide a corrective output
to keep the equipment at the prescribed slope.
FEATURES
•
Rugged aluminum housing
•
Adjustable sensitivity
•
RUN/STANDBY switch permits operator to switch to
manual control
•
Deviation meter with zero center shows deviation from
setpoint in RUN or STANDBY positions
•
Reverse polarity and short circuit protection
•
Moisture and corrosion resistant
•
Accepts a remote slope setpoint adjuster
•
Withstands vibration and shock
ORDERING INFORMATION
SPECIFY
1. Model Number W894A. See Table A.
2. Accessories
TABLE A.
ACCESSORIES
Order the necessary parts from the list below:
1. MCV113 Servovalve
2. Q625A Remote Setpoint (hand-held setpoint with inte-
gral coiled cord and MS connector).
3. Q625A Remote Setpoint (panel-mount setpoint with ter-
minal strip).
4. KW01001 Cable (two-foot coiled cable that extends to
ten feet. Has straight connector on one end and spade
lugs on the other. Mates with the five-pin W894A connec-
tor and the panel-mount Q625A Remote Setpoint)
5. KW01013 Cable (two-foot coiled cable that extends to
ten feet. Has right angle connector on one end and
straight connector on the other. Mates with the ten-pin
W894A connector and an MS3102A18-1P plug).
6. KW01012 Cable (four-foot coiled cable that extends to
twenty feet. Has right angle connector on one end and
straight connector on the other. Mates with the ten-pin
W894A connector and an MS3102A18-1P plug).
ORDER NUMBER
DESCRIPTION
W894A1053
12Vdc, Drives MCV113
Hot Side Switching
© Danfoss, 2013-09
BLN-95-8974-5
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