Cleveland Motion Controls Classic Series DIN Rail Amplifier with Isolated Output MWI-13467 REV CA - Manual (Page 22)

C LASSIC S ERIES A MPLIFIER W / I SOLATED O UTPUTS MAN-13467 REV CA
Page 22 of 30
3.3 S AFETY C ONSIDERATIONS
Don’t let safety be an afterthought. Before beginning calibration of transducers, review and follow applicable
policies and procedures to ensure worker safety. Machinery must be in a safe state, and you should be aware of
additional hazards that can arise when calibrating higher force transducers.
The following points are important to remember:
•
When dead weights are used to produce a force, always wear steel-toed shoes.
•
When manually handling weights, use safe lifting practices to avoid injury.
•
Size any cordage or straps with an ample safety factor to reduce the chances of failure and falling
weights.
•
Consider where the cords and weights will travel should a failure occur.
•
Check that all hardware is mounted with the appropriate fasteners (thread size and pitch, fastener
grade, length of thread engagement).
3.4 C ALIBRATION
The following sections describe the calibration process for establishing particular voltages at the +/- 10V analog
output. If you intend to use only the damped meter output, then make that output the focus of your calibration
efforts.
3.5 C HECKING T RANSDUCER M OUNTING
Before preparing to apply force to the transducer(s) and calibrating the amplifier you should check to be sure that the
load cell is orientated and mounted in accordance to the transducer installation instructions. Common problems
include:
•
Failure to orient the transducer on a flat (machined) surface.
•
Poor shaft alignment that exceeds allowable limits.
•
Excessive or insufficient fastener torque.
•
The transducer is not oriented correctly and the sensing-axis is not true to the applied force vector
(bi-sector of the wrap-angle).
•
The roll shafts are mounted without allowance for shaft expansion or contraction.
•
The transducer is positioned in the web path where the wrap angle is not constant.
For more information about proper practices for applying calibration, refer to section 3.7 in this document.