Red-lion LEGEND Manuel d'utilisateur télécharger pdf (Page 47)

NOTES:

1. SENSOR VOLTAGE AND CURRENT

The +12VDC (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.

2. 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” mode also

provides very high immunity against electrical noise pickup. It is

recommended that this mode also be used, whenever 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 +28V in

amplitude. For voltages above +28V, 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 47