3
Probe Installation
Mount the probe so that the metal passes between the probe face and the magnetic
source (conveyor). We recommend the initial probe gap to conveyor belt should be
12mm (.5”) or less. Do not hard mount the probe bracket at this time. With no metal
present the probe must detect at least 100 gauss from the magnetic conveyor. It is wise
to leave the probe mounting loose until the ideal location is determined using the
Meter
Mode
feature cover on page 5.
The Models DS71 and DS72 with the Model PN18 Single probe Double Sheet Detector
can operate without the probe touching the target metal. It uses the residual magnetic
field that attracts the metal to the conveyor. The magnet acts like a transmitter in a dual
probe detector. The Magnetic field will permeate through the metal blank. The
thickness of a non metallic belt will not adversely affect the magnetic strength as long as
it is blank is held closely to the belt surface. The unit must be calibrated after the gap is
established. If the gap is too large, the unit will not calibrate. Use the meter mode
(page 5) to determine the maximum gap.
We recommend you always locate the sensor to achieve maximum coverage of the target metal
blank when calibrating. Calibration at a location where the maximum field is not blocked may
cause false doubles. During production the metal may move to a point where more flux is
covered. This is especially true when the shape of the blank varies. Typically the blank should
cover the magnetic to the PN18 for approximately 50 mm (2”). If the target is smaller than
50mm, then locate it where the maximum coverage is located using the meter mode. Calibrate at
that position.
Electrical Wiring
The connection between the probe and the controller requires a Prime Controls adapter
cable model CBL110-2. The cable has a connector at either end and does not require
external wiring. Probe and control separation should be within the 2 meter cable length.
Power to the controller and the outputs connect through an industrial standard male,
four-pin, 12mm connector. For noise immune connection use Prime Controls specified
Model CBL104-3 cable.
The CBL104-3 pin-out is as follows and the connected individual wire colors:
Pin 1 -
Power
Brown wire on standard cable
Pin 2 -
Single Output
White wire on standard cable
Pin 3 -
Common
Blue wire on standard cable
Pin
4
- No-double
Output Black wire on standard cable
Cable shields should not be strip from wires more than 50mm or 2 inches to maintain
noise immunity. Route the cables away from any high power wiring and machinery to
maintain noise immunity. Make sure the Pin 3 Common (blue) is uninterrupted to the
common of the source power supply.
