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DLM 600W Series Isolated Remote Analog Interface Operation
M51A Option 2-5
2.3.1 ISOLATED ANALOG INTERFACE Functions
The following sections describe the functions of the various signals of the ISOLATED ANALOG
INTERFACE. Pin numbers correspond to the connector pinout of Table 2–2.
Digital Control Input Signals
ANALOG-CONTROL: Pin-1, enables remote analog programming with an active-high logic
level of 3-15VDC. An internal 100kΩ pull-down resistor is provided. When ANALOG-
CONTROL is asserted, the power supply will power-up with the analog interface in control of the
output voltage. Signal is referenced to Pin-6. Circuit is SELV, and has electrical isolation from
the output of the unit.
EXTERNAL-OFF: Pin-14, disables the output when asserted. Active logic level could be
selected with the INTFC SETUP switch to be high (3-30VDC) or low. An internal 100kΩ pull-
down resistor is provided. Signal is referenced to Pin-2. Circuit is SELV, and has electrical
isolation from the output of the unit.
Digital Control Output Signals
VOLTAGE-MODE: Pin-5, nominal 5VDC logic level indicates operation in constant-voltage
mode. Source resistance is 2kΩ. Signal is referenced to Pin-6. Circuit is SELV, and has
electrical isolation from the output of the unit.
OVP: Pin-17, nominal 5VDC logic level indicates that the output has been disabled because of
overvoltage protection. Source resistance is 2kΩ. Signal is referenced to Pin-6. Circuit is
SELV, and has electrical isolation from the output of the unit.
FAULT: Pin-18, nominal 5VDC logic level indicates that the output is disabled because of
overtemperature or summary fault. Source resistance is 2kΩ. Signal is referenced to Pin-6.
Circuit is SELV, and has electrical isolation from the output of the unit.
Analog Monitor Signals
VOLTAGE MONITOR, 0-5/10V: Pin-19, readback of the output voltage is provided with a
0-5VDC or 0-10VDC signal (user selectable with INTFC SETUP switch) indicating
0-100% of full scale output. Signal is referenced to Pin-2. Circuit is SELV, and has electrical
isolation from the output of the unit.
VOLTAGE MONITOR, 4-20mA: Pin-4, readback of the output voltage is provided with a
4-20mA signal indicating 0-100% of full scale output. Signal return for the 4-20mA current is
Pin-6. Circuit is SELV, and has electrical isolation from the output of the unit.
CURRENT MONITOR, 0-5/10V: Pin-7, readback of the output current is provided with a
0-5VDC or 0-10VDC signal (user selectable with INTFC SETUP switch) indicating
0-100% of full scale output. Signal is referenced to Pin-2. Circuit is SELV, and has electrical
isolation from the output of the unit.
CURRENT MONITOR, 4-20mA: Pin-24, readback of the output current is provided with a
4-20mA signal indicating 0-100% of full scale output. Signal return for the 4-20mA current is
Pin-6. Circuit is SELV, and has electrical isolation from the output of the unit.