R55F Series Fiber-Optic Color Mark Sensors

page

8

www.bannerengineering.com • Tel: 763.544.3164

Remote Programming

The gray wire of the R55F may be connected to a remote switch or to a process

controller to:

- Set sensitivity via either Static or Dynamic TEACH mode

- Set output response via SETUP mode

- Disable the push button functions

A remote programming switch is connected between the gray wire and dc common (see

Hookup diagrams on page 11). The switch may be either a normally-open contact, or an

open-collector NPN transistor with its emitter connected to dc common.

Remote programming is accomplished using a specified sequence of input pulses.

The duration of each pulse is defined as:

0.04 seconds < T < 0.8 seconds (40 ms < T< 800 ms)

Remote Static TEACH Mode

1) Present the Output ON condition to the fiber sensing end and pulse the Remote

TEACH input once.

2) Wait at least 0.8 seconds, present the Output OFF condition, and pulse the Remote

TEACH input once.

If sensing contrast is adequate, the sensor flashes one segment of the signal strength

light bar for 3 seconds to indicate relative contrast, and then enters RUN mode.

If contrast is too low, the sensor flashes five segments of the signal strength light bar

in unison to warn of unacceptably low contrast, and returns to re-teach the Output ON

condition (Step 1).

Remote Static Single-Point TEACH

The single-point TEACH may also be performed using the remote wire. Present the

target and single-click the remote wire. Wait for at least 0.8 second, then double-click

the remote wire. If the TEACH is successful, the sensor will flash the middle two LEDs

of the bar graph, and return to RUN mode.

Remote Dynamic TEACH Mode

1) Hold the TEACH input low for > 2 seconds

2) Continue holding the TEACH input low while presenting light and dark sensing

conditions. Open switch when finished teaching.

If sensing contrast is adequate, the sensor flashes one segment of the signal strength

light bar for 3 seconds to indicate relative contrast, and then enters RUN mode.

If contrast is too low, the sensor flashes five segments of the signal strength light bar

in unison to warn of unacceptably low contrast, and returns to RUN mode with its

previously taught conditions.

Switch Open

Switch Closed

to dc common

0.04 < T < 0.8 sec

Figure 4. Input pulse timing

Present

Output ON

Condition

Present

Output OFF

Condition

> 0.8 sec

TT

Figure 5. Static TEACH mode

Present

Output ON

Condition

Double-Click

> 0.8 sec

TT

T

T

Figure 6. Static Single-Point TEACH mode

> 2 sec

TEACH Light

and Dark

Conditions

Figure 7. Dynamic TEACH mode