• SIGNA™ Hero 3.0T Service Methods
  • 5852800-8EN Revision 1.0
  • Object ID: 00000018WIA3076FE20GYZ
  • Topic ID: id_13106418 Version: 3.0
  • Date: Aug 29, 2019 1:47:34 AM

Emergency Stop and Off Check

Prerequisites

Table 1. Personnel requirements
Required personsPreliminary requirementsProcedureFinalization
1Not ApplicableNot ApplicableNot Applicable

About this task

This document provides the procedure for checking:

  • The EMERGENCY STOP function of the Power Distribution Unit (PDU) for the Gradient subsystem, and RF subsystem.

  • The EMERGENCY OFF function of the power for the entire system.

The PDU EMERGENCY STOP buttons are located on the Operator Workspace Keyboard and on the Magnet Enclosure front cover (two buttons, left and right). An SYSTEM OFF button is located on the System Main Disconnect Panel. The other EMERGENCY OFF buttons are located by the customer.

Topic ID: id_SL1780959-1178739

ICN and Host PC Shutdown

Procedure

  1. If system is login as root, power off the ICN. Refer to ICN On/Off Procedure
    Note: Proceed “Powering Down from Root Level” in referenced procedure.
  2. From the Common Service Desktop, select Utility > System Shutdown and click [Shutdown] to shutdown the PC and ICN.
    Note: If system is login as root, perform the following steps.

    1. Right click and select Logout. Then, click Yes.

    2. At Menu, select Shutdown.

    3. Select Turn Off Computer.

Topic ID: id_SL1780961-1178739

Emergency Stop

Procedure

  1. Press one of the EMERGENCY STOP buttons shown in the following illustration.
    Figure 1. Emergency Stop Buttons
  2. Verify the power to the Gradient subsystem and RF subsystem is shut off.
    1. Gradient verification: Look at the SSSPS (Gradient Power Supply) Control Board and confirm the Enable LED is off (see Figure 2).
      Figure 2. SSSPS LEDs
    2. RF Amplifier Verification: Look at the bank on the front of the RF Amp and confirm that the AC Power LED is off. (See Figure 3).
      Figure 3. AC Power LED
      Note: Activation of the Emergency Stop Button for the ISC will remove the high voltage from the gradient power supply and the RF Amplifier. However, be aware that the PDU voltage will stay enabled in the ISC after the Emergency Stop Button is pressed.
  3. On the PDU, press the EMO Reset Button to return power to all affected cabinets. See Figure 4 for ISC PDU.
    Note: When you press the EMO Reset button, you should hear the contactor engage. This is another indication that the E-Stop was pressed and is active.
    Figure 4. Emo Reset and Input Test Points
  4. Repeat the steps in this section for each of the other EMERGENCY STOP buttons.
Topic ID: id_SL1780973-1178739

Emergency Off

About this task

The AC power for the Magnet Monitor is not controlled by the Emergency Off button.

Procedure

  1. Make sure the ICN and Host PC is shutdown. See ICN and Host PC Shutdown.
  2. Turn off the breakers for the Host PC and ICE/ICN Breaker at ISC PDU.
    Note: If you do not turn off the breakers, the Host will restart when power is enabled again, and you will need to wait for them to boot before you can test the additional Emergency Off buttons.
  3. Press one of the EMERGENCY OFF buttons (the location of buttons is determined by the customer). Verify that power was removed from the PDU by checking the input voltage test points or viewing the PDU power indicator lights.
  4. On the System Main Disconnect Panel, press the SYSTEM ON button.
  5. Reset the On switch.
  6. On the PDU, press the EMO RESET button.
  7. Repeat Step 3 through Step 6 for the other EMERGENCY OFF buttons. (This includes pressing the SYSTEM OFF button on the MDP). Normal locations for Emergency Off buttons are in the magnet room and in the operator room.
  8. Turn on the breakers for the ICE/ICN and HOST PC at ISC PDU.
  9. On the PDU, press the EMO RESET button.
Topic ID: id_14952708

What to do next

Finalization

Confirm that Host PC boots properly.