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SO signal level
(J1-1 – J1-11)
2-30V or Open
0-0.6V or Short
2.12
Rear Panel (J1 Connector) Functions
2.12.1
Interlock Function - Analog On/Off (Enable/Disable)
Interlock signal (\ILC_IN) serves as power supply output enable control via a switch or relay.
Use the Interlock function to enable or disable the output as emergency shutoff or door open
switch. It is an isolated signal from the power supply output. Connection to the signal is made via
pin J1-19 (\ILC_IN) and pin J1-11 (COM_SELV).
The ILC function can be enabled or disabled via communications or the Front panel as follows:
1.
Press the SYST button. SYST (GREEN) LED illuminates.
2.
Rotate the Voltage encoder until ILC OFF appears.
3.
Rotate Current encoder to select ILC ON or ILC OFF. Press Current encoder to accept. The
display blinks once to acknowledge the setting.
4.
Exit SYST menu by pressing the Back button or the SYST button.
Front Panel ILC
Setting
OFF – Default
ON
To prevent possible damage to the unit, do not connect any of the Enable /Disable inputs to the
positive or negative output potential.
Safe Start mode - If the Interlock fault condition clears while units are in the Safe Start mode, the
power supply returns to Output Off mode.
Auto-Restart mode - The output will automatically return to the previous setting.
The following faults will require \ILC_IN recycle: UVP, OVP or Foldback.
Power Supply Output DAISY_Out Level
(J1-2 – J1-11)
On
High
Off (SO FAULT)
Low
Table 2-3: Daisy_In Signal Definition
ILC Input
Open or Short
Open Or 2~30V
Short Or 0~0.6V
Table 2-4: Interlock Functions and Settings
CAUTION
NOTE
37
PS_OK Level
(J1-3 – J1-11)
Low
High (Open Collector)
Power Supply
Display
Output
On
Voltage/Current
Off
ILC FAULT
On
Voltage/Current
Alarm LED
Off
On
Off
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