Red-lion LEGEND Manuel d'utilisateur télécharger pdf (Page 57)

DIP SWITCH SET-UP

The DIP switches are accessible through the side of the Legend Plus. The

DIP switch positions and their functions are shown below:

NOTES:

1. SENSOR VOLTAGE AND CURRENT

The +12 VDC (in/out) terminal can supply voltage to a sensor within a

±25% variation, due to line and internal load variations. All RLC sensors

will accommodate this variation.

HI/LO FRQ SELECTION

The HI/LO FRQ selection switch must be set on “LO FRQ” when switch

contacts are used to generate count input signals. The “LO FRQ” modealso

provides very high immunity against electrical noise pickup. It is

recommended that this mode also be used, when possible, with electronic

sensor outputs. The “LO FRQ” mode can be used with any type of sensor

output, provided count pulse widths never decrease below 10 msec, and the

count rate frequency does not exceed 50 cps.

3. When shielded cable is used, the shield should be connected to “COMM.”

at the unit and left disconnected at the sensor end.

4. Inputs A and B can accept source pulses from other circuits up to +28 V in

amplitude. For voltages above +28 V, a limiting resistor and zener diode

should be used to limit the voltage at the input.

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Red-lion LEGEND Manuel d'utilisateur Page 57