Dell 3750W, 4200W, H952N, J730N, J739N, K804N, K805N

Additional UPS Features |

Table 8. RS-232 Communication Port Pin Assignment

Pin Signal Name Function Direction from the UPS

1 Unused —

2 Tx Transmit to external device Out

3 Rx Receive from external device In

4 Unused —

5 GND Signal common (tied to chassis) —

6 Unused —

7 Unused —

8 Unused —

9 Unused —

*Unused pins must be left free on all models.

Contents

Main Notes and Warnings S Table of Contents 1 Introduction 2 Safety Warnings 3 Installation 4 Operation 5 Additional UPS Features Page Introduction Page Finding Information NOTE: NOTE: Safety Warnings IMPORTANT SAFETY INSTRUCTIONS SAVE THESE INSTRUCTIONS S S S S Page Page Installation Inspecting the Equipment Unpacking the Cabinet Page Installation Identifying the UPS Rear Panels Figure 4. 3750W, 208V Rear Panel This section shows the rear panels of the Dell Online Rack models. Figure 5. 3750W, 230V Rear Panel Figure 6. 4200W, 208V Rear Panel Installation Figure 7. 4200W, 230V Rear Panel Figure 8. The Dell Online Rack UPS Front Panel Identifying the UPS Front Panel Rackmount Setup Page Page Page Page Page Installing the EBM Installing the UPS Installing Remote Emergency Power-off Page Hardwiring the UPS Input S S S S S S S Page UPS Initial Startup Page Operation UPS Startup and Shutdown Starting the UPS Starting the UPS on Battery UPS Shutdown Control Panel Functions S S S Changing the Language Display Functions Startup Screen Screen Locked UPS Status Page Page Event Log Measurements Control Screens Table 5 describes the available control screens. Identification Settings Page Page Page Transferring the UPS Between Modes S S Transferring from Normal to Bypass Mode Transferring from Bypass to Normal Mode Setting Power Strategy Retrieving the Event Log To retrieve the Event Log through the display: 1Press the button for one second to go to the main menu selection and scroll down to the Event Log menu using the button. Behavior on Overload Configuring Load Segments Controlling Load Segments Through the Display Configuring Automatic Start Delay S S S S Configuring Automatic on Battery Shutdown Configuring Battery Settings Configuring the UPS for an EBM Running Automatic Battery Tests S S S S Configuring Automatic Restart Additional UPS Features S S S RS-232 and USB Communication Ports Page Dell Network Management Card (Optional) Dell UPS Management Software UPS Maintenance S S S S S UPS and Battery Care Transporting the UPS Page Storing the UPS and Batteries When to Replace Batteries Testing Batteries S S S Updating the UPS Firmware Specifications S S S S S S NOTE: Page Page Troubleshooting Accessing Alarms and Conditions S S UPS Status Menu S Typical Alarms and Conditions Page Page Page Silencing the Alarm

Dell - page 55

Models: 3750W 4200W H952N J730N J739N K804N K805N