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ATD 50 Actuator
®
Operating Instructions
Page 6
3811 N. Holton Street • Milwaukee, WI • 53212 •USA • Phone • 414-906-4000 • Fax 414-906-4100 • www.MPCovers.com
2.3 General Information (cont.)
The purchaser, designer, and/or installer is responsible to insure the correct and
safe application of the ATD 50 Actuator
®
. These personnel must insure that all
Federal, State, and Local laws and regulations regarding workplace safety are
observed. OSHA and other safety regulations must be observed when completing
an installation.
Milwaukee Protective Covers is not responsible for incidental and/or consequential
damages resulting from the use or application of the ATD 50 Actuator
®
. Our
maximum liability under warranty is for only the cost of the product sold. Milwaukee
Protective Covers makes no claims for merchantability or fitness of use for specific
machine guarding applications. The purchaser, designer, and/or installer of the
ATD 50 Actuator
®
must decide if the drive is applicable to a given machine
application. In addition, Milwaukee Protective Covers specifically declines any
responsibility for damage or injury resulting from unauthorized changes to the drive,
including software parameter changes. No employee of Milwaukee Protective
Covers is authorized to modify this warranty without the specific written approval of
a company officer.
3 Theory of Operation
The ATD 50 Actuator
®
is controlled using a built-in microprocessor computer. The
microprocessor is programmed to provide optimum motion control and safe
response to obstructions. Internal parameters can be changed by authorized
service personnel to customize the installation. The software can be modified for
each installation.
The ATD 50 Actuator
®
is completely self-calibrating. Upon power-up, the unit
automatically adjusts to the opening width of the machine. During the OPEN and
CLOSE motion, the unit finds the end-stop positions of the door. Therefore, the
door width is not limited in any way.
The internal drive motor is operated by a variable frequency converter which
provides the optimal speed and torque for each movement. The motor speed and
torque are continuously monitored thereby providing a sensitive and accurate
electronic reversing feature ( see Section 11.3).