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Front Panel
ENA Polarity
ENA Setting
OFF – Default
-
ON
NORM
NORM
REV
REV
2.12.4
Auxiliary Programmed Signals Prog_out_1 and Prog_out_2
The programmed signal Prog_out_1 (J1-21) and Prog_out_2 (J1-20) are open drain, maximum
input voltage 25V and maximum sink current 100mA. Programmed signals can be controlled via
the Front Panel or via communications. Selection of "OFF" via front panel or communication will
result low output signal level ("OFF" - internal FET conducts) and selection of "ON" via front panel
or communication will result high output signal level ("ON" - internal FET does not conduct).
Pin 1 or Pin 2 settings are set as follows:
1.
Press the SYST. Button. SYST (GREEN) LED illuminates.
2.
Rotate the Voltage encoder until PIN 1 OFF or PIN 2 OFF appears.
3.
Rotate Current encoder to select PIN 1 ON or PIN 1 OFF, PIN 2 ON or PIN 2 OFF. Press Current
encoder to accept. The display blinks once to acknowledge the setting.
4.
Exit the SYST menu by pressing the Back button or the SYST button.
Do not connect Prog_out_1 and Prog_out_2 to a voltage source higher than 25V. Always connect
Prog_out_1 and Prog_out_2 to the voltage source with a series resistor to limit the sink current to
less than 100mA.
2.12.5
Power Supply OK Signal
Power Supply OK signal (\PS_OK_OUT) indicates power supply output state (ON/OFF).
It is an open collector signal at J1-3, referenced to COM_SELV at J1-11 (Isolated Interface
Common). When a fault condition occurs or power supply output is Off, \PS_OK_OUT level is high,
maximum input voltage is 30V. When no fault condition occurs or power supply output is On,
\PS_OK_OUT level is low with maximum sink current of 10mA.
The \PS_OK_OUT signal can be delayed via Front Panel setting or via communication. The delay
affects \PS_OK_OUT signal high -> low transition only (power supply output state from OFF to
ON), low -> high (power supply output state from ON to OFF) is not affected.
This function is used to prevent signal rise before output reaches set value.
ENA Input
Power Supply
Output
Open or Short
On
Open Or 2~30V Off
Short Or 0~0.6V On
Open Or 2~30V On
Short Or 0~0.6V Off
Table 2-5: Enable Functions and Settings
CAUTION
39
Alarm LED
Display
Off
Voltage/Current
On
ENA FAULT
Off
Voltage/Current
Off
Voltage/Current
On
ENA FAULT
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