Can I create a negative output from the Xgen?
Yes. All outputs in the Xgen are fully isolated outputs. They can be referenced to a common point creating either a positive or negative output voltage. To create a negative 5 V output for example, the +Vout terminal of the module should be connected to the common return (chassis ground, earth ground etc.). The –Vout terminal will then deliver the -5 V output. All outputs have 500 V output-output isolation and 500 V output-ground isolation.
Can I connect two or more power supplies in parallel for higher current?
Yes. Xgen power supplies can be parallel connected for higher power and current applications. The maximum Earth Leakage Current varies depending on the application. The total leakage current from the power supplies is calculated by adding the individual Maximum Earth Leakage of each power supply. Earth Leakage current varoes with input line voltage. Advanced Energy measures Earth Leakage at the worst case voltage of 250 VAC. Other components in the system can contribute to Earth Leakage current and should be considered when calculating the maximum system Earth Leakage current.
Can I use an Xgen in my medical equipment?
Yes. The Xmite, Xrite, Xvite, and Xzite provide medically approved power supplies from 200 to 1340 W.
Are Advanced Energy low voltage products RoHS compliant?
Yes. All Advanced Energy low voltage products meet the requirements of the RoHS (Reduction of Hazardous Substances) Directive.
Can I remotely switch ON/OFF the Xgen?
Yes. The Xgen has global Inhibit/Enable function that allows users to remotely switch ON/OFF the power supply using a digital or analog signal. The isolated outputs can also be individually Inhibited/Enabled allowing users to sequence outputs and controls system start-ups.
Can I parallel connect power supplies for an N+1 redundancy system?
Yes. Parallel connecting powers supplies for operation in redundant mode is an acceptable and often necessary practice. To ensure correct operation, each power supply must be capable of providing the full system load. The the power supplies should have their outputs connected in parallel via diodes. The diodes permit one power supply to fail without affecting the other.
I have a number of PowerMods in parallel. I want to use the remote sense option. Do I need to bring out all of the sense lines to my load?
All of the sense lines need to be connected to the load. The wiring complexity can be reduced by connecting all of the sense lines locally and bringing out one pair of sense lines to the load.
I notice the Xg8 is a dual output. If I have an unbalanced load, will it affect cross regulation?
No. Both outputs are fully floating and are isolated from each other. They have independent regulation which is not effected by the adjacent output.
I notice that when I connect the sense pins, the output voltage drops, even at no load. Is this what you would expect?
Yes. Due to the voltage ratio of the feedback divider chain, when the sense lines are connected, we expect to see approximately 200 mV drop once the remote sense lines are connected.
I have a battery charging application; do you recommend the use of a blocking diode?
The Xgen is designed to sink and source current to maintain its regulation setpoint. If excessive energy returns from the load, it has negative current limit to prevent damage to the freewheel fet. In a battery charging application, where energy is sufficiently high, this may be a source for potential damage. A blocking diode for any battery charging application is best practice.
Can I use a combination of units in parallel and in series to meet voltage and power requirements?
Yes. The Xgen series is highly flexible.
Where is the voltage setpoint measured on a configured Xgen?
For powerMods Xg1 to Xg5, the output voltage is set at the positive and negative sense pins. For powerMod Xg7, the output is set at the +Vout (Pin2) and -Vout (Pin 1) of the J4 connector. For powerMod Xg8, the output is set on the +Vout and -Vout pins for each output (i.e., Pin 4 through to Pin 1 respectively of the connector J4).
Are the fans always on and are they at a constant speed?
Yes. The Xgen powerPac consists of a fan-cooled, semi-enclosed chassis. An always-on consent speed fan is used to enable power densities of 1 5 W/in3 and the 90% plus efficiencies up to the 1340 W available. To increase fan life the Global Inhibit can be used to turn off the power supply under no load conditions. For acoustic sensitive applications, the Xgen series is available in a low acoustic noise versions.
Can I use a DC-input voltage with the Xgen series?
Yes. A universal input voltage range from 85 to 264 VAC and 120 to 380 VDC input also work with Xgen platform.
How do I set the voltage on individual powerMods when they are being used in parallel?
First, ensure that the powerMods DIPswitch I Share is set to ON for reach powerMod. Then attach the negative parallel link. Adjust the output voltage on powerMod 1 to the required output. Measure the voltage difference between the positive terminals of powerMod 1 and powerMod 2. Adjust the powerMod 2 voltage to minimize the delta and then attach the positive parallel links. Repeat this for each subsequent powerMod.
Is the OVP (Over Voltage Protection) latching or non-latching ?
Over Voltage Protection (OVP) is implemented as a two-level scheme. Level One OVP is initiated when the output is between 110 to 115% of the Vset, this is non-latching. Level Two OVP is fixed relative to Vmax. If the output voltage rises to between 110 to 125% of Vmax, the OVP is initiated. This is a latching protection and it is reset by removing and reinstating the input power.
Download our AC/DC Modular Designer Manual for more information.