Iq2 Search Head Only Installation - Loma IQ2 User Manual

110
Installing the metal
detector
2
IQ search head only installation
This section describes how to install a Loma metal detector search head to either an existing
conveyor or to a conveyor being built by a customer.
Electrical supply considerations
All Loma equipment is designed to operate under factory conditions, and has been tested to
recognised international standards for mains-borne interference. It is still necessary,
however, to ensure that the equipment is nor subjected to excessive electrical noise via its
supply. The following simple steps should be followed to ensure this:
The unit should have its own dedicated supply, unless the line supply is known to be clean.
Any dedicated supply line should run in its own conduit/trunking away from other noisy
supplies.
Any signal I/O which is connected to the auxiliary connections should be in screened cable,
grounded at the point of entry to the detector control box, and kept free from sources of
electrical noise (eg mains supplies for large electrical machines).
Before starting to install a head
Before starting to install a head on a conveyor, installation personnel are strongly
recommended to read Mounting heads on conveyors, page 112, to thoroughly familiarise
themselves with the installation requirements.
Connecting electrical supplies
In the case of a metal detector search head supplied as a Head, electrical connections are
made to a connector block inside the control box.
Use a clean supply source preferably with a dedicated breaker for both the main supply and
reject power. It is important that the system has a good ground.
When routing the main supply source to your system ensure the cable routing does not pass
through nor run parallel to any electrically noisy enclosures or cables. Do not mix main
supply cables with signal cables.
Use a suitable suppressor to suppress the reject supply coil. This must be fitted as close as
possible to the coil.
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