Detecto PD100 Instructions d'exploitation télécharger pdf (Page 6)

CONFIGURATION SWITCHES AND JUMPERS

A two position switch is located on the main control circuit board in the opening between the

two connectors. These switches are for future expansion and currently have not effect on the

operation of the PD100.

Each of the logic inputs (CAL and RESET) has associated with it a two position jumper plug

located under the front cover and immediately behind its associated connector. These jumpers

allow the inputs to be driven by a sinking (NPN) or sourcing (PNP) device. When the jumper

plug is installed on the pins closest to the connector, the input is set up for a sourcing driver.

When installed on the two pins farthest from the connector (factory setting), the input is set up

for a sinking driver, or dry contact between the input and COM. Both inputs are active low.

CALIBRATION

The detector may be calibrated via the push-button switch on the front cover or remotely through

a switch connected between the CAL and COM terminals of the right terminal block.

In calibrating, the objective is to establish a threshold, a position, such that if the probe moves

across the threshold and away from the target, the PD100 output relay switches to indicate the

separation. Conversely, if the separation of the probe and the target is less than or equal to the

separation at calibration, the PD100 output relay is in the state indicated on the PD100 front

panel.

Thus, to establish the threshold position, simply position the probe and the target at the desired

separation and press the CALIBRATE push button on the front panel of the PD100.

Alternatively, a remote push button connected across the CAL input may be used.

Note that the actual threshold is offset by the amount indicated in the adjacent graph. After the

CAL push button is pressed, the

system always indicates OK. The OUT

indication comes on if the probe is

backed away from the target by the

back-off distance. The smallest back-

off distance is realized if the probe is

calibrated while in contact with the

target. For maximum back-off,

calibrate with a gap between the target

and the probe as indicated in the graph.

The steel target should be at least

0.060” thick.

0.00 0.01 0.02 0.03 0.04 0.05 0.06 0.07 0.08 0.09

Gap at Calibration (in.)

0.001

0.003

0.005

0.007

0.009

0.011

0.013

0.015

0.017

0.019

0.021

Probe Backoff Distance (in.)

PM4 Backoff Distance

PM10 Backoff Distance

PM15 Backoff Distance

Probe Backoff Distances vs Gap at Calibration

1 2 3 4 5 6 7 8 9 10

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Detecto PD100 Instructions d'exploitation Page 6

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