IS2020RKPSG3A GE MKVI, POWER SUPPLY-Colletplc

Description:

The IS2020RKPSG3A is a VME Power Supply Module that serves as part of the Mark VI system.  This abbreviation for the VME Rack Power Supply is RKPS. Information regarding this power supply can be found in GE Industrial Systems manual GEH-6421E.

The  IS2020RKPSG2A is designed as a stand-alone module.  It has a front faceplate that includes three LEDs (yellow, red, green,) and a switch component.  The faceplate is labeled “Power supply,” and also has a location to record the revision number, GE catalog number, and serial number for easy reference.  The side of the module is designed with many metal fins. This side of the module functions as a large heat sink component. The top edge of the module has two connectors (PSA and PSB) and the bottom has four additional connectors (PS125 or PS24, PS335, PS28, and PSSTAT.)

It is important to note the VME rack power supply has seven major variations.  The IS2020RKPSG3A has an input voltage of 125VDC and an output rating of 400 W.  Outputs (mentioned above) includes five +28V outputs, one remote +28V output, a PS335 output, and a status ID output.   

Fault conditions that happen within the  IS2020RKPSG3A module will require reset action, will transiently shut down one of the outputs, or will require the replacement of the entire supply. These are the only types of faults that occur.

The VME Rack power supply has only one user control, the power switch, and three status LED indicators. The power switch provides front control of the power supply output voltages and when toggled serves as a fault reset. The yellow, red and green LEDs indicate the status of the input power, fault presence and normal operation.

Power Switch:
The front panel power switch is a locking type that must be pulled out to change position. This switch is a low voltage control to enable or disable the output voltages. If the red LED is ON indicating a fault condition the power switch can be toggled OFF and then back ON again to clear the fault. The fault will only be cleared if the condition the caused it no longer exists.

Yellow LED:
When the power switch is OFF the yellow LED will indicate the status of the input power. If this LED is ON there is power present on the supply input connector. For the newer design, the yellow LED will only turn ON if the input voltage is above the input under voltage fault threshold.

Red LED
This LED will only be ON if there is input power, the power switch is ON and a fault has been detected.

Green LED/Status Output:
If there is input power, the power switch is ON, and there are no detectable faults, the Green LED will be ON. The newer designs also have a status output that mimics the status of this LED. The status output is a NO solid state relay contact that will be CLOSED when the green LED is ON.

Datasheet Link:

IS2020RKPSG3A GE MKVI, POWER SUPPLY Datasheet General Electric