3
FI002K0018v1530hUK – THS/21 Instruction manual for installation, use and maintenance
INSTALLATION
60 ORIGINAL
INSTRUCTION
3.1.2.8 Ejection
area
If an ejector with moving metal parts is installed in the ejection area, the distance from the Detection Probe must comply
with the instructions in paragraph 3.1.2.2.
The position of the ejection area
E
, located at the Probe exit, is constrained by the following
conditions:
Synchronization with photocell at the entrance to the Probe (EM=S/SB)
N
:
conveyor belt;
S
:
electronics unit;
F
:
photocell;
PL
:
length of package;
E
:
ejection area;
DW
:
length of Probe;
ED
:
distance photocell-ejector
(6m max);
Dp
:
distance between packs.
PD + DW + PL <
ED
< 62 x ( PL + Dp )
Synchronization with photocell at the exit from the Probe (EM=S/SB)
N
:
conveyor belt;
S
:
electronics unit;
F
:
photocell;
PL
:
length of package;
E
:
ejection area;
DW
:
length of Probe;
ED
:
distance photocell-ejector
(6m max);
Dp
:
distance between packs.
PL <
ED
< 62 x ( PL + Dp )
Without synchronization photocell (EM=F/B)
N
:
conveyor belt;
S
:
electronics unit;
PL
:
length of package;
E
:
ejection area;
DW
:
length of Probe;
ED
:
distance Probe-ejector;
Dp
:
distance between packs.
0.5 x DW + PL <
ED
< 6m
For high speed applications, the response time of the photocell, Metal Detector and ejector can be not negligible.
It is suggested to always verify by experiments the correct ejector actioning during the final detection verifications of
metallic samples, eventually increasing the distance of the ejector from the Probe.
The distancew between packs
Dp
shall be compatible the Ejection System activation and deactivation times, in order to
grant the correct ejection of two or more consecutive packs.
