Local Operation
3-36 M370430-01 Rev B
Interlock Function
The Interlock function can be used to wire an external shutoff switch
that can be used to enable or disable the power supply output. When the
switch is closed, the power supply will operate normally. If the switch is
opened, the power supply will trigger the interlock alarm. The output
will be disabled, the display will blink , and the ALARM LED
will illuminate. This alarm will automatically clear when the switch
closes again, and the output will automatically be restored to its
pre-alarm state (either enabled or disabled). The interlock function can
only be enabled or disabled (defined) using a SCPI command (cannot be
masked or latched through the alarm protection mechanisms.). Common
applications include an emergency shutoff switch or a door switch.
Connect the switch between pins J3.14 and J3.15 on the AUX Output
and Isolated Analog Programming Connector.
Defining the Interlock Mode
The Interlock mode is controlled via SCPI commands. There is no front
panel access for enabling or disabling the Interlock functionality. See
“Interlock Enable/Disable” on page 5-70.
The SCPI command for setting the Interlock mode to On or Off is:
[:]SENSe[<channel>]:PROTection:INTerlock[:STATe]
Output Protection
The output voltage and the output current can be programmed (preset) to
automatically start at zero Volts and zero Amps upon power-up and
upon output enable. Also, each can be reprogrammed to disable the
autotmatic reset to zero.
Note: With the M10 Option, the power supply voltage output is
preset to 0 Volts.
Programming Voltage Output Preset
To Enable/Disable automatic reset to 0 Volts:
1. Turn the rotary Adjust/Enter control to PRT and press.
2. Turn again until is displayed.
3. Press to display .
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