4
MULTI-FUNCTION
INDICATOR (RED,
GREEN, AMBER)
POWER
INDICATOR
(GREEN)
Apply Power
When power is applied, the green LED indicator is continuously ON.
When initially powered up, the DS71/DS72 controller displays the firmware version
number by flashing the
multi-function/multi-color
LED indicator, first
red
then
green
(See FIRMWARE VERSION later in this document on page 8). When troubleshooting
with Prime Controls, it is helpful to know the version number. The controller then
checks for a valid probe. If a fault is detected, it could be one of the following problems:
a) the probe is not connected; b) there is an open connection in the cable to the probe;
c) weak or no magnetic signal present. The multi-function indicator will flash red at a
rate of 10Hz until the fault is cleared. If no fault is detected the controller goes into
normal the sensing operation. Normal indicator colors are covered on page 8. If the
magnetic field signal is strong the multi-function indicator will be off. (this assumes the
probe face was mounted within 50mm of the magnetic conveyor.)
PUSHBUTTON OPERATION
The small pushbutton mounts flush with the
face of the unit to insure no inadvertent
bumping can cause a calibration mistake.
In addition to calibration, the pushbutton is
used to control two other operational modes.
They modes are:
1. During operation, pressing and holding the pushbutton for three seconds more,
initiates meter mode.
2. From meter mode, pressing the pushbutton once exits meter mode.
3. From error mode, pressing the pushbutton once retries calibration.
4. From calibration mode, pressing and releasing once within 3 seconds, initiates
calibration on a single thickness of metal.
5. From calibration mode, pressing the pushbutton twice within 1.0 second, initiates
two-sample calibration mode and records the first point. A third tap records the
second calibration point, installs the new calibration and exits calibration mode.
