Mitsubishi MR-S11 Servo Drives Sales and maintenance process

Our factory supplies various Mitsubishi MR-S11 Servo Drives in stock,MR-S11-300-E01 etc.

The following is Repair Process for Mitsubishi MR-S11 AC Servo Drives.

Visual Overview
When conducting a visual check, the technician inspects the drive for any mechanical damage to the drive itself and any printed circuit boards (PCB). The technician then proceeds to verify connections are tight and
correct inside the drive and there are no loose screws, wires or debris. Additionally, the unit is checked for any burn marks on the components, PCBs or chassis. During the visual inspection, excessive dirt on
cooling components is noted as well as the functionality of the heat sink.

Basic Static Check
On the MR-S11 and MR-S12 units, the control board and gate board are required to be removed in order to static check the unit. We do not recommend doing this unless the person checking is experienced as improper
handling can result in damages.

DC Bus Capacitor Check
Upon removal of the control and gate board, this opens up a board with many screws connecting to different components. The DC bus capacitor has a round, dashed outline with two screws labeled ‘+’ and ‘-‘. This
can be checked using a multimeter set to the capacitance setting. This value will need to be verified with the value printed on the capacitor itself.

Diode Bridge Check
The diode bridge is denoted with a sort of ‘U’ shaped screw layout and has 5 terminal screws on it. This is located near the bus capacitor. This can be checked using the diode check function on a multimeter. The
layout of the screws will show which screw terminals relate to the positive and negative. It will look like two rows or columns based on how it is viewed, and one set will have 3 screws back to back whereas the other
will have a screw with a space and then another screw. The row/column with the space will be the positive and negative terminals which can be used to check the diodes with the multimeter. Using the positive or
negative lead with the respective screw and then using the other lead on each of the 3 screws on the other row should result in roughly a 0.45V reading, if the components are good.

Output Module Check
The output modules on these units can be tested by use of a digital multimeter with diode checking capabilities. Our technicians are also equipped with huntron devices further verify their integrity.