“PulsLen=20.000mm” Pulse length in mm for each received tacho pulse.
Default value is 20.0mm which corresponds to an S-E-G tacho type F-25 with a 25
hole pulse disc installed with drive unit CF. The circumference of the CF measuring
wheel is 500mm divided with 25 pulses/tacho revolution.
If the tachometer is driven in any other way and the pulse length is not known, this
value may be set to zero (0) and instead the beltlength entered at the next step.
“BeltLen=” Conveyor beltlength in metres.
This will automatically be calculated during the next step, if a value for pulse length
have been entered for “PulsLen=” above..
If pulse length above is set to zero (0), the beltlength corresponding to 1 belt
revolution has to be entered here at this point, before proceeding to the next step.
“Run Belt” Automatic counting of the corresponding number of tacho pulses for one belt
revolution, system tare out, limits for zero setting and recording of belt profile will be
calculated at this point.
When started, the automatic sequence will be as described below:
When belt sensor position is sensed the first time, tare sequence is restarted.
The next time belt position is sensed, belt length and average standard tare is saved
and belt profile recording started. When 3:rd belt position is sensed, belt profile is
saved and auto zero is enabled.”
NOTE 1 If a previous start-up already has been carried out, new limit values for zero
setting of belt will not be calculated. If new values are desired, the parameter values
for “CutOff” and “AutNMax” must be zeroset before “Run belt” is performed.
New values will also be calculated when desired if zeroset before initiating a
“SysZero” from inside the menusystem.
NOTE 2 If a belt revolution sensor has not
been installed, step 1-7 on the next page
must be carried out instead.
“Save” Saves all entered values and selections and exits to operation mode.
Auto zero is being started, and after successsfully finished, the belt profile
compensation is being activated. If the belt position sensor signal is lost for 4 belt
revolutions in a row, belt profile compensation will be deactivated (”Signal Error”) and
the previously recorded average tare will be used in the same manner as for a
standard beltscale (Equal to model H14). If the belt position sensor later is regained,
the belt profile compensation can be activated again if a “SysZero” is enabled from
the menu system.
The controller is now set up, but a few important issues remain to handle and consider before finally taking the
beltscale into operation:
1. In order to take full advantage of the belt profile compensation, the calculated limit value for parameter “CutOff”
needs to be reduced. It is recommended to reduce the limit to at least 50% of the current value. In most cases the
limit can be reduced further, improving accuracy even more.
2. Remember to engage the backup battery. Refer to section 3.4. If not, all preset parameters will be lost
when power is being disconnected.
3. It is highly recommended to make an additional memory backup
of all settings by enabling this function under
the “SYSTEM DATA” menu. A snapshot of all settings will be stored in the permanent memory for future retrieval
in case of a backup battery failure.
4. If the coneyor is inclined, put in the angle of inclination for parameter “Angle=” under the “SYSTEM DATA”
menu for compensation of weight sensing errors caused by inclination.
NOTE! If an optional “inclination compensator” is connected to the controller, this value will be adjusted for
automatically.
5. If it is possible after the set up to perform an actual weight verification, you will achieve greater accuracy,
correcting for mechanical errors. Refer to section 6.2 “SPAN ADJUST”
18-08-16 S44-H15E 4-4
S-E-G SYSTEM A2-H15 INSTRUCTION
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