Will Burt 711990491, Operating Instructions Manual, Page: 35 / 114

S
TILETTO
AL O
PERATING
I
NSTRUCTIONS
TP-5418901-F Original Instructions 1-21
August 2020
1.7.2 Universal Control Box (P/N: 4453901)
This section describes the standard Universal Control Box. Additional options are available.
Contact The Will-Burt Company for additional information.
Stiletto AL masts are designed to work with Control boxes operating version 3.0 or later
software. These Control Boxes will indicate if the connected mast is a Stiletto AL or Stiletto HD.
Old-style Control Boxes will not give this indication. Subsequently, an old-style Control Box will
result in an incorrect height readout and permit possible voltage back-feed into the control box
which could cause electrical damage. Only operate the mast with version 3.0 or later software.
The standard Universal Control Box (Figure 1-16):
•
Combines customer input, power input, sensor input, and power output to allow the
customer to extend and retract the mast without running past sensor or software limits
•
Contains power MOSFETs to control Motor direction and to dynamically brake the
Motor. When a directional command is terminated, the Universal Control Box
automatically shorts the Motor leads for a second or two to dynamically brake the Motor.
The normally-engaged brake on the Motor also engages to lock the mast and prevent
back driving when the mast is not moving (powered or unpowered).
•
Can be factory-set to show the intermediate extension height in metric or US customary
units.
•
Is wired to allow for an optional Hand-Held Remote Control or PC Interface
•
Has some self-diagnosis capability (errors and warnings)
•
Is housed in an aluminum NEMA 4X box
•
Is vacuum-sealed at the factory. Opening the Universal Control Box will void the
warranty.
Figure 1-16 Universal Control Box