Safeline STANDARD SERIES, Инструкция по эксплуатации

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tm3[G] TIMER
The tm3[G] is a variable speed version of the tm2[G)
timer,
The tm2[G] timer has four time clock controlled functions
that will provide an accurate reject action on a fixed
speed conveyor.
The tm3[G] timer has three of these functions controlled
by a speed sensor attached to the conveyor, which
enables an accurate ”reject action to be maintained over
a wide range of speeds.
The speed sensor provides a number of digital pulses in
relation to the distance moved by the conveyor. The
incremental distance moved between pulses is known as
the SHIFT distance.
Customers fitting/producing their own speed sensor
should refer to Appendix A.
Setting Up Timer
Before making any adjustments the following points a)
through to c) should be noted, and to ensure accurate
rejection of alI sizes of metal contamination in any
position within the pack these procedures must be
rigorously applied.
a) The same small metal test piece should be used to
make the following settings.
For loose product it can be placed on the belt, for
packaged products it is convenient to position the metal
test piece always on top of the pack at the front or rear
edge and pass it down the centre line of the conveyor.
b) The sensitivity should be adjusted such that the
metal test piece is only just detected, i.e. 2 or 3 red bars
illuminated on the bar graph display.
c) The metal test piece has to pass through the
aperture along the same axis for every test, i.e. the same
distance from the top of the aperture or nearest surface
of the detectors aperture.
Setting Up Timer Type tm3[G] – Non Gated
Mode
To set up the timer use the following procedure:
1) If inspecting individual products prepare a
sample pack containing a small metal contaminant
positioned at the rear/trailing edge.
If product is loose use smallest detectable metal test
sample available.
2) Enter the Engineers access code
3) If inspecting individual products pass the
sample pack containing the small metal contamination
through the detector and adjust the sensitivity so that the
bar graph indicates 2 to 3 red bars.
If product is loose place metal sample on belt and adjust
sensitivity in a similar manner.
4) Press ’ETC’ soft key and display reads Select Timer
A/B/C
5) Select timer A B or C, display now reads Timer ’x’
Update Yes/No Note: ’x’ represents the selected
timer A B or C
6) Select ’Yes’ display now reads Timer Type
tm1/tm2(G)/tm3(G)
7) Select ’tm3(G)’ if previously set to gated mode
display will read
Gated Timer Still Required Yes/No
If not set previously, display will be as shown in 8)