Ceia THS - THS;M - Specific Instructions for Ejector

THS – FI022GB2K8v3 --- V - MAINTENANCE
30
Programming
parameters
Meaning Generally applied setting
THS/STD THS/SL THS/3F THS/G THS/M THS/PH
PL Length of
product pack
_ 5-80cm _
EM Ejection mo
Mode B: halting of the production line and manual elimination of the
contaminated material
Mode F: automatic set-aside of contaminated material with alarm
synchronisation
Mode S: automatic set-aside of contaminated material with photocell
synchronisation
Mode SB: halting of the production line with photocell synchronisation
and manual elimination of the contaminated material
_
ED Distance of
ejector from
probe or
photocell
0-6000mm
Application with photocell: set Dfe parameter (see the following figures)
Application without photocell: set Dse parameter
ET Ejection relay
activation time
0-3200 hundredths of a second
The programming parameters which relate to the ejector are CE, CT, EJ, IE, IL and LF (see Programming section).
Position the ejector E at the exit point of the central electronics unit.
In general, the ejector position is constrained by the following formulas:
Dp
L
PL
F
S
E
N
Dfe
Dse
Dfe
≤ 20 x ( PL + Dp)
Dse > 0.5 x (L + PL)
Fig.II-25: synchronisation with photocell at the entrance to
the probe
Dp
L
PL
F
S
E
N
Dse
Dfe
Dfe
≥ 0.5 x PL
Dse
≤ 20 x ( PL + Dp)
Fig.II-26: synchronisation with photocell at the exit from the
probe
Dp
L
PL
S
E
N
Dse
Dse
≤ 20 x ( PL + Dp)
Dse > 0.5 x (L + PL)
Fig.II-27 synchronisation with Metal Detector
S
probe/electronics unit of the metal detector
L
length of probe
N
conveyor belt
Dfe
distance photocell-ejector
F
photocell
Dse
distance probe-ejector
PL
length of package
Dp
distance between packs
E
ejector
The ejection time ET must be determined by experimentation, as it depends on the type of ejector
To minimise the number of packs rejected at each alarm, it is recommended that Dp is longer than L, so that
only one pack is ejected each time the ejector is activated.
THS/M – Specific instructions for ejector
Rule Note
Dse ≥ PL + 0,5xL +
BS
60
x (ejector response time)
BS: transit speed, in m/min
Dp = 1,2 x (PL + L)
For accurate analysis, the previous product must have left
the tunnel before the next one passes through