14
Power Supply Connections
Main connector PL1
Main Connector
Line F1
Neutral
Earth
Earth
Neutral
Line
Reject
Reject F2
Reject
Fault
Fault
F3
Input / Output 1
Input / Output 1 F4
Input / Output 2
Input / Output 2 F5
L
N
E
E
N
L
1
2
3
4
5
6
7
8
9
Mains
Supply
Special Function
Input/Output
Devices
Fault Output
Reject Output
RL1
RL2
RL3
RL4
Figure 14
Mains Supply
Connect the supply line to, L-Live, N-Neutral, E-Ground (Earth).
Either 110 or 220 volts single phase can be used to power the metal detector. A selection switch ( SW1 )on the power supply
board will switch between voltages. The metal detector can operate on either 50 or 60 Hertz, 55 va.
Fuses
Fuses F1 to F4 are 1 Amp 250 volt fast acting fuses, only use fuses with the same rating for replacements. Secondary fuses F6
and F7 are 2 Amp 250 volt slow blow, use only same rating for replacement.
Reject Output
When metal is detected or detector power is turned off dry contacts 1 and 2 close, 2 and 3 open. Terminal 2 is fused 1 Amp 250
volt fast acting fuses. To supply typical reject device (e.g.: solenoid), connect jumper from L to 2, connect solenoid to 1, N and
E, or 3, N, E, depending on action required.
NOTE: DAMAGE may occur if wrong voltage is applied to relays !
Solid state relays are available. Check power unit lid for description of relay type. Mechanical relays are AC or DC -
only terminals 2 and 3 are used for reject.
Fault Output
During a fault condition or when power is turned off terminals 4 and 5 will close. These connections can be connected to an
external alarm to indicate a fault condition. Terminal 5 is fused at 1 Amp 250 volt fast acting fuses.
Note: It is advised that the fault output be connected to either a fault alarm e.g. horn, or to the reject device.
Special Function Input / Output Devices
Terminals 6, 7, 8, 9 are for use with special options. Terminals 7 and 9 are fused at 1 Amp 250 volt fast acting fuses.
Note: I/O devices are not normally fitted. DO NOT connect to these terminals if it is unclear of the type or voltage rating of
devices fitted. Permanent damage may occur if incorrect voltage is applied.
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