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Installation
The machine should have its own dedicated supply, unless the line supply is known to be clean. The
earth should be robust, of low impedance and noise free.
Any dedicated supply line should be run in its own conduit / trunking away from other noisy supplies.
The input voltage should not be subject to voltage fluctuations outside the limits (NWML0320):
■
Minus 15% to plus 10% of the nominal supply voltage (230V or 110V).
■
Zero voltage for more than 20mS.
■
50% of nominal voltage for more than 40mS.
■
80% of nominal voltage for more than 100mS.
Operation outside these limits may cause loss of function until the supply condition recovers to within
limits.
The standard metal detector conveyor is fitted with a starter isolator and a 24V ac control circuit. The
supply voltage for the conveyor is indicated on the identification plate that is mounted on the frame.
The following illustration shows the isolator inside a typical electrical services box
The Isolator Switch can be locked in the ‘OFF’ position using a padlock to prevent electrical
power being restored whilst carrying out servicing and maintenance activities.
To connect an electrical supply, proceed as follows:
1. Unlock and open the Electrical Services Box to access the electrical services.
2.
The back of the Isolator Switch is located in the bottom right hand side of the cabinet
when viewed from the rear. Beneath it on the bottom of the cabinet is the cable gland
access for the power cable.
3. Push the supply cable up into the Electrical Services Box through the cable gland.
4.
Split the cable inside the box and cut the wires to suitable lengths. An armoured/braided
cable is recommended when cable conduit is not used. A suitable earth conductor is
also to be fitted.
5.
Crimp connectors onto the wires and connect to the Isolator Switch as specified in the
table below.
6. Check that all connections are secure then refit the metal cover plate and front cover.
46
- Metal Detector User Guide 1
- Table of Contents 3
- Introduction 11
- About this Guide 12
- Organisation 13
- Document Change Control 14
- Document Key 14
- The Loma Group of Companies 16
- About Metal Detection 17
- How a Metal Detector Works 18
- Product Effect and Phasing 18
- Phasing 19
- Tracker Feature 20
- Metal Free Zone 20
- Detector Performance 20
- Types of Metal 22
- Test Frequency 23
- Product Test Samples 23
- Test Wands 24
- Testing Guidelines 24
- Test Records 24
- Learn Feature 25
- Safety First 27
- Safety Awareness 28
- EC Declaration of Conformity 28
- Safety Warnings 29
- Safety Labels 31
- Safety Guards 32
- Safety Measures 33
- Intended Use of the Machine 33
- Noise Levels 34
- End of Life Treatment 34
- Emergency Procedures 34
- Quality Assurance 35
- End User Licence Agreement 36
- Technical Specifications 37
- European Belt Conveyors 38
- Installation 39
- Warnings 40
- Receiving and Unpacking 40
- Moving the Detector Head 40
- Nuisance triggering 45
- Moving Metal 46
- Vibration 47
- Belting 47
- Electrical Interference 47
- Warnings 52
- Moving the Machine 53
- Clearance Requirements 54
- Connecting the Air Supply 54
- Checking Guards 57
- Site Considerations 58
- Radio Frequency Interference 59
- Metal Detector Search Heads 62
- Conveyor Belts 63
- Plastic Modular Belts 64
- Reject Devices 65
- Electrical Services Box 67
- Air Pressure Switch 67
- Optional Equipment 68
- Getting Started 71
- threshold 72
- display 72
- changes 72
- User Access 75
- Logging In and Out 76
- Starting and Stopping 77
- Stopping the Machine 78
- Emergency Stop 78
- Using the Metal Detector 79
- Handling Rejected Products 81
- Getting the Results 82
- Frequency Selection 82
- Operating Instructions 83
- Setting the Language 84
- Setting the Machine ID 84
- Setting Up the Search Head 86
- Setting Up the Conveyor 88
- Setting the VF Balance 92
- Setting the VF Drive 94
- Setting Up the User Options 95
- Setting Up Serial Links 96
- Reject Relay 101
- Reject Timing 101
- Adding a New Product 102
- Learning Products 104
- Full Learn 105
- Update Learn 106
- Learn Messages 107
- Learn Setup 108
- Learn Limits 110
- PQ span? 111
- Using Performance Validation 112
- Logs and Reports 117
- Errors Report 118
- Example Problems 119
- Faults Report 120
- Setup Report 123
- Contaminants Report 124
- Learn Report 125
- Status Report 126
- PV Test Report 126
- Batch Report 127
- Shift Report 128
- Contaminants Log 128
- Errors Log 129
- Faults Log 130
- Printing the Faults Report 131
- Clearing a Fault 131
- Clearing the Log 131
- Batch Log 132
- PVS Log 133
- Shift Log 134
- Maintenance 135
- Cleaning solutions 136
- Belt conveyor versions 136
- Conveyor Belt Maintenance 137
- Adjusting the Reject Devices 138
- Software Upgrades 138
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