Allen-Bradley A-B QUALITY DL20 Series User Manual page 173

Description
120 VAC Parallel Input Converters
The 110/120V AC Parallel Input Converters connect to the parallel port of a
DL20 one, two, or four line display. Input converters allow AC connections
to the DL20 parallel port which normally accepts DC voltages from 5–30
volts. The Parallel Input Converter converts the AC signal to either pulsating
or constant 5V DC depending upon which series converter you use:
Series A and B Parallel Input Converters accept 120V AC 10%, 60 Hz
input signals and convert them to a pulsating 5V DC input signal to the
DL20 parallel port.
Series C and later Parallel Input Converters accept the same AC input
signals, but convert them to a constant 5V DC input. An external power
supply is not needed when the Parallel Input Converter is installed.
Appendix D shows the converter dimensions.
Appendix
H
A–B
H–1