Sorensen.Source

Code author: Kevin Kennedy <protonyx@users.noreply.github.com>

class labtronyx.drivers.Sorensen.Source.d_XFR(resource, **kwargs)

Driver for Sorensen XFR Series DC Power Supplies

disableProtection()

Disable the protection circuitry.

getCurrent()

Get the output current level

Returns:float

getError()

Read any pending error codes with accompanying information

Returns:str

getProtectionState()

This command is used to query the executing state of the protection circuitry. If one of the states has tripped, the protection state can be reset by turning the output off and then back on.

Returns:tuple (OVP, OCP)

getTerminalCurrent()

Get the measured current from the terminals of the instrument

Returns:float

getTerminalPower()

Get the measured power from the terminals of the instrument

Returns:float

getTerminalVoltage()

Get the measured voltage from the terminals of the instrument

Returns:float

getVoltage()

Get the output voltage level

Returns:float

powerOff()

Disables the output power connections.

powerOn()

Enables the instrument to power the output

setCurrent(current)

Set the output current level

Parameters:current (float) – Current (in Amps)

setLocalControl()

Set Local Control Mode

setProtection(voltage=None, current=None)

Enable the protection circuitry. If any of the parameters is zero, that protection is disabled.

Parameters:

• voltage (float) – OVP Setting (in Volts)
• current (float) – OCP Setting (in Amps)

setRemoteControl()

Enable Remote Control Mode

setVoltage(voltage)

Set the output voltage level

Parameters:voltage (float) – Voltage (in Volts)

setVoltageSlewRate(step, interval)

Set the voltage slew rate as a function of change in the output voltage and a given time interval. The maximum slew rate is 1% rated voltage/150us. The slew rate is saved upon power off and restored at power on. Output ON/OFF and shutdown are not affected by the programmable slew rate. These functions have a slew rate of 1%/20ms.

The range of output voltage is 5% - 0.1% of rated voltage. The range of time interval is 1.5 s - 150 us. The negative slew rate is limited by the discharge rate of the output capacitors.

During current share, slaves operate with their default slew rate. The master operates at its programmed slew rate. Hence a programmable slew rate for the system is achieved. However, this slew rate is limited by the speed of the control loop. The slaves will return to their programmed slew rate when they exit current share slave operation.

The slew rate error increases as the slew rate increases.

Example:

Set a slew rate of 100V/10s. This slew rate is 1V/0.1s, which is
within the acceptable range.

>>> setVoltageSlewRate(1, 0.1)

Note:

Check both the voltage step and the interval to ensure that you get
the required slew rate

Parameters:

• step – voltage-step (units of Volts)
• current (float) – time interval (seconds)

trigger()

Trigger the instrument