Ceia THS/21 - Timing and Signal Management

3
FI002K0018v1530hUK – THS/21 Instruction manual for installation, use and maintenance
INSTALLAZIONE
134 ORIGINAL INSTRUCTION
3.9.10.2 Without change of Detection Mode or Band between two products
L
S
Dp
BR
N
Dsbr
Distance between the
packs
Distance between the
barcode reader and the
THS/21 Probe
D
p
 L + 300 mm D
sbr
 300 mm
S: Probe/electronics unit of the Metal Detector; L: length of Probe; N: conveyor belt; BR: Barcode reader;
Dsbr: Distance THS/21 Probe-barcode reader; Dp: Distance between the packs of different products
These distances are indicative and also depend on the speed of transit of the products involved.
3.10 Timing
This section describes the timings for the signals activated after an alarm occurred with product
transport activated.
For systems fitted with a Conveyor Control System or Control Power Box with encoder, the
timings are based on the actual speed of the conveying system.
For systems with a Control Power Box without encoder, the timings are based on the speed set
in the BS parameter and do not take into account any transit stoppages after an alarm or during
ejection. In applications with intermittent product conveying, we therefore recommend synchronizing
with the conveyor signal (for details see paragraph 3.10).
On the following timings the status of Inputs and Outputs, that together with the Alarm determine the ejection cycle, are
represented graphically. (high level: line activated; low level: line deactivated).
The activation of the Ejection relay (EJECT RELAY) entails the simultaneous activation of the EJECT NO output and
deactivation of the EJECT NC output, used for the direct driving of the ejector.