Eriez 1250 ANALOG, Инструкции по установке, эксплуатации и обслуживанию

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14
A. START-Up
Before turning on the system, locate the switches
and lights on the door panel and the controls inside
the cabinet.
• The power switch is located on the lower left­
hand corner of the door panel. Place it in the
“ON” position. The green “ON” indicator should
light at this time.
• If the green “ON” indicator does not come on
return the power switch to the “OFF” position
and inspect the light bulb and fuses; also check
the power and wiring for proper connections.
• Approximately 5 seconds after power “ON”, the
No. 1 Status indicator (power supply located
on the front panel of the Electronic Module will
light (reference Figure 2). This indicates that
the power supply is fully operational and all the
electronics are enabled.
If the power supply L.E.D. status indicator or the
“ON” indicator does not light, refer to Trouble-
shooting Flow Diagram #1 for instructions. Until
the power supply L.E.D. is lit, calibration of the unit
cannot begin.
B. MAIN DETECTOR UNIT METAL
SENSITIvITy CALIBRATION
Before proceeding with the calibration procedure
obtain a sample of tramp metal to be used during
calibration. The piece should be the minimum size
to be detected.
It is important that the clip time L.E.D. No. 7 is not
lit during the calibration. This results in erroneous
data. Calibration adjustments are to be performed
using controls on the Electronic Module in the fol-
lowing manner:
1. Set the “Metal Sensitivity” control knob, located
on the from panel of the Electronic Module, to the
middle of the dial (reading of 5).
2. The Detector discriminates between interference
and a signal given off by tramp metal. The tramp
metal must enter the sensing coil at the direction
and speed of normal belt flow, before the Detector
will arm. However, the “Metal Signal” L.E.D. No 2,
will light anytime moving metal is in the sensing
field. When calibrating the system, be careful not
to introduce extraneous metal into the field in the
form of rings, belt buckles, keys, steel-toed shoes,
etc. When calibrating the system, it is best to set
the metal to be detected on a cardboard box (with
no staples) at the appropriate height and pass at
the speed and direction of belt flow.
If the Detector does not trip on the sample, turn the
“Metal Sensitivity” control knob to a higher sensitivity
(in direction of ascending numbers), so the Detector
will trip just as the metal is passed between the coils.
In the event that the unit doesn’t trip with the “Met-
al Sensitivity” control knob on 10, check to see if
the metal signal L.E.D. No. 2 lights as the metal
is passed through the field. If the L.E.D. does not
light as the tramp metal is passed through the field,
additional sensitivity may be required. In this case,
please refer to Section 4.2.
If L.E.D. No. 2 flashes, but the Detector does not
alarm, pass the metal through in the opposite direc-
tion of normal belt flow. If the unit trips, then switch
the (+) and (-) receiver terminal wires at the Interface
Module. This will program the Detector to trigger on
tramp metal traveling in the correct direction
3. Repeat step (2) until the system trips on the
piece or metal. When the final setting is deter mined,
note the number on the control knob for future ref-
erence.
If this number is greater than 8 increase the gain
of the Detector as discussed in Section IV.B. If the
number is less than 3, decrease the gain of the
system as discussed in Section IV.B
C. CLIp DETECTOR CALIBRATION
(If AppLICABLE)
Refer to this section if the clip detector is set for the
desensitization mode rather than the disable mode
• Turn the “Clip Override” control knob fully clock­
wise to position 10 on the dial. This knob is locat-
ed on the front panel of the Electronic Module
as shown in Figure 2.
part III - Start-up & Calibration