Operating Manual CMGZ433
14
8.6
Mounting the distance sensor
If the control loop is operated with external pilot control (processing of reel diameter), the
actual reel diameter has to be transmitted to the electronic unit. For this purpose the actual
reel diameter is detected with a distance sensor and the distance signal is fed to the analog
diameter input (terminals d6 / d8 resp. 7 / 8).
It has to be ensured that the measuring axis of the distance sensor is straight radial to the
reel (refer to fig. 1 and 9).
Optical distance sensor CMGZ581934
FMS recommends to use the optical distance sensor CMGZ581934 because its accuracy
and signal output is adapted to the FMS measuring amplifiers and Tension Controllers.
fig. 9: Mounting of the distance sensor CMGZ581924
E411012e
The distance sensor operates with the 3-beam-correction principle. It is considerable
insensible to secondary light and changes of the surface colour of the detected object. But
while mounting it must be ensured that the sensor is mounted in „horizontal“ position
(fig. 9).
The output signal is proportional to the reel radius: Small radius = small signal; large
radius = large signal.
Technical data distance sensor CMGZ581934
Type
HT77MGV80, Infrared light 880nm
Measuring range
1000mm [40“]
Ø Measuring distance
800mm [32“]
Min. measuring distance
300mm [12“]
Max. measuring distance
1300mm [51“]
Resolution
0.2...30mm [.008...1.2“] depending on width of spot
Reaction time
10ms
Linearity 2%
Temperature drift
0.5mm / K [.01“ / °F]
Supply voltage
18...30VDC / 70mA
Temperature range
–10...+60°C [14...140°F]
Protection class
IP67
Summary of Contents for CMGZ433 Series
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