VERTIV POWERDIRECT PSS5033 (01) PDF Document

The VERTIV POWERDIRECT PSS5033 50 VDC Power System is an integrated power system containing power supply units (PSUs), a DC shelf, and a power monitoring module (PMM). This system can contain up to eight (8) shelves (4+4 Redundancy Configuration) that can be configured into a single system. Each shelf contains one (1) PMM and up to six (6) PSUs. The capacity of a single shelf is 33kW/50Vdc.

To inspect the equipment for your VERTIV POWERDIRECT PSS5033, follow these steps:

1. Check the packing slip to ensure all components ordered were received. Report any missing items to the carrier and your local sales representative immediately.

2. Inspect equipment for obvious damage. If damage is visible, do not proceed and follow local practices for reporting and handling damaged goods.

Follow these steps to install the Rack Mounting Rail Kit for the VERTIV POWERDIRECT PSS5033:

1. Find the related OpenU marking number of the desired location on the rack.

2. Install one side of the mounting rail kit by orienting the rail as shown in the figure. Align mounting rail tabs to the corresponding cutout in the IT rack frame according to the desired OpenU number.

3. Slide the mounting rail in until the mounting rail tabs fit into the cutouts.

4. Pull the mounting rail latching clip toward the center of the rack while sliding the mounting rail into position.

5. Release the mounting rail latching clip to secure the rail to the rack.

6. Repeat the procedure for the other side mounting rail.

The components of the rack mounting rail kit are detailed below:

To install the DC shelf into the rack for your VERTIV POWERDIRECT PSS5033, follow these steps:

1. Partially slide the DC shelf into the front of the rack, resting the bottom of the DC shelf on the rack mounting rails.

2. Slide the mounting levers located on each side of the DC shelf in towards the center of the shelf.

3. Slide the DC shelf completely into the rack.

4. Release the mounting levers to secure the DC shelf to the rack.

5. Verify that the shelf’s DC output connector mates properly with the vertical DC busbar set in the rear of the rack.

The electrical connections for the VERTIV POWERDIRECT PSS5033 are made as follows:

Power System Frame Grounding Connection:

Connect the end of the factory-installed frame-grounding network lead cable to a suitable ground.

50 VDC Output Connection:

DC output is provided via a DC output connector located on the back of the DC shelf (connection 018). This connector is compatible to mate with the vertical DC busbar set in an Open Compute Project version 3 HPR rack. WARNING: Observe proper polarity when making output connections.

AC Input Connections:

AC input is connected to the AC Input #1 (connection 016) and AC Input #2 (connection 017).

Below is a description of the connection points:

Parallel shelves are connected using specific cables for communication. The connections for the Power Monitoring Module (PMM) are as follows:

• Modbus connection cable: Used for Modbus communication.

• PSU ishare cable: Used for communication between PSU shelves.

• BBU ishare cable: Used for communication between BBU shelves.

The PMM has four ports with the following functions:

• Port 1: Modbus input

• Port 2: Modbus output

• Port 3: ishare cable, input

• Port 4: ishare cable, output

For CAN bus connections, a 120 ohm termination is required. For Modbus, a 120 ohm termination is also required. No CAN BUS termination is needed for PSU shelves.

There are two kinds of network cable for parallel operation: P/N 0411B749 (short) and P/N 0411C205 (long). The default configuration uses the short network cable. If the distance between two shelves in the rack exceeds 250 mm (9.84 inches), you must order the long network cable (P/N 0411C205). NOTE: When using a single shelf, you still need to configure the Daisy Chain Jumper.

The PSU is hot swappable and can be removed or installed with the system operating without affecting the output bus. Follow these steps for installation:

1. Insert the module: Unpack the PSU. Partially slide the PSU into the shelf.

2. Retract the latch mechanism: Push the spring latch handle (Item 019) located on the front of the PSU. The securing latch (Item 020) on the side of the PSU will retract.

3. Secure the PSU into the shelf: Slide the PSU completely into the shelf and release the spring latch handle. The securing latch located on the side of the PSU will pop into a notch in the shelf to secure the PSU to the shelf.

4. Repeat: Repeat the above steps for each PSU being installed.

NOTE: PSUs are ready for operation immediately after they are installed in the mounting assembly and power is supplied to them.

CAUTION: The rectifier contains double pole fusing; parts of the equipment that remain energized might represent a hazard during servicing after operation of the fuse.

The PMM is hot swappable and can be removed or installed with the system operating without affecting the output bus. Follow these steps for installation:

1. Insert the module: Unpack the PMM. Partially slide the PMM into the shelf.

2. Release the latch mechanism: Push the spring latch handle (Item 026) located on the front of the PMM to the right. This will retract the securing latch (Item 027) located on the side of the PMM.

3. Secure the PMM into the shelf: Slide the PMM completely into the shelf and release the spring latch handle. The securing latch located on the side of the PMM will pop into a notch in the shelf to secure the PMM to the shelf.

The components of the PMM are detailed below:

After installing the Power Monitoring Module (PMM), verify the system operation as follows:

1. If the system is operating, wait for the PMM to finish booting.

2. Verify that the system operates normally and ensure there are no alarms.

3. Check for alarms. Ensure there are no local or remote alarms active on the system. NOTE: Alarms are not available until after the PMM is installed.

Communication to the PMM is via modbus over RS485. Refer to the user manual for details.