Red Lion C48C - Manual (Page 16)

-10-
Various Sensor Output Connections
SENSORS WITH CURRENT SOURCE OUTPUT (PNP O.C.)
(COUNT ON TURN-OFF)
2 WIRE PROXIMITY SENSORS - CURRENT SOURCE CONNECTED
(COUNT ON CURRENT FALL)
OLDER STYLE SENSORS WITH E-F OUTPUT - CURRENT
SOURCE CONNECTED (COUNT ON FALLING EDGE)
SENSORS WITH CURRENT SINK OUTPUT (NPN O.C.)
(COUNT ON TURN-ON)
CURRENT SINK CONNECTED (COUNT ON CLOSING)
INTERFACING WITH CMOS CIRCUITRY (B TYPE)
NOTES:
1. SENSOR VOLTAGE AND CURRENT
The DC OUT/IN terminal can supply +12
VDC @ 100 mA max. within a
±15%
range, due to line and internal load
variations. Most RLC sensors will
accommodate this range.
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 does not exceed 50 Hz.
3. When shielded cable is used, connect the
shield to “COMM.” at the counter and
leave it disconnected at the sensor end.
4. Inputs A and B can accept source pulses
from other circuits up to +30 V in
amplitude. For voltages above +30 V, a
limiting resistor and zener diode should
be used to limit the voltage at the input
terminal.
INTERFACING WITH TTL
COUNT SWITCH OR ISOLATED TRANSISTOR OUTPUTS
CURRENT SOURCE CONNECTED (COUNT ON OPENING)