2. Product Overview

PDU & Maintenance

Bypass Switch Module

Quick Guide

Wall

V. 2.0

1. Introduction

The product is used as an external power distribution unit in conjunction with UPS systems or large-scale voltage regulators. It allows to manually transfer the connected equipment to utility power via a bypass switch, permitting scheduled maintenance or UPS replacement without power interruption. Combined power distribution feature and the master-controlled design, it provides maintenance bypass function and power saving within a rack mechanism.

Rack Mount/Wall Mount the Unit

The module can be mounted to a 19” enclosure or wall. Please follow below chart for rack/wall mount installation.

Master output receptacle

(for connecting a computer)

Slave output receptacles

Bypass switch

AC input

Circuit breaker

(for connecting peripherals)

Socket to UPS output

Master/Slave function switch

δ

Power LED

ε

Slave On LED Socket to UPS input

3. Installation and Operation

Inspection

Remove the unit from the shipping package and inspect it for damage that may occur during transportation. Notify the carrier and place of purchase if any damage is found. The shipping package contains:

Maintenance bypass switch module x 1

Quick guide x 1

Mains power cord x 1

Screws and mounting ears

Connect to the Wall Outlet

Plug the input power cord of the unit to the wall outlet. The Power LED will light up when the mains is normal. The Power LED will be off while power failure.

Chart 1: Rack mounting Chart 2: Wall mounting

Connect UPS

Connect a power cord from UPS input to UPS input socket on the unit. Use one power cord to connect UPS output to UPS output socket on the unit.

Online UPS

16A/16A or

16A/10A

Connect Equipment

There are two types of output receptacles: Master, and Slave.

To save power consumption, the unit is equipped with Master and Slave output receptacles.

The Master output receptacle will sense if master device (computer) is on. If the master device is no longer drawing current, it will automatically shut down the power to the Slave output receptacles. Please refer to below charts for detailed equipment connection.

Plug computer into Master Output Receptacle

Plug peripherals into Slave Output Receptacle

Computer

Monitor Printer

Switch

NOTE: When the computer is turned off, the Master output receptacle shuts off power to the slave output receptacles. However, when the computer goes into “sleep mode” or the power consumption of connected device to Master output receptacle is below 20 W, the Master output receptacle may not properly recognize the reduced power level.

4. Operation

Transfer to Maintenance Bypass

Before transferring to maintenance bypass, make sure the Power LED is lighting. Transfer the rotary bypass switch from “Normal” to “Bypass”. At this time, all connected devices are powered by the utility power directly. You may turn off the UPS and disconnect two cables connecting to UPS. Then you may now service the UPS.

Transfer to UPS Protection

After maintenance service is done, make sure the UPS operation is normal. Then, reconnect

UPS to the unit by following Installation Section. Verify the Power LED is lighting. Then transfer the rotary bypass switch from “Bypass” to “Normal”. Now, all connected devices are protected by UPS.

Master/Slave Function Operation

After connecting all devices to the unit, press “Master/Slave switch” to enable status ( ).

The Slave On LED will light up when connecting load on master output is above 20W. Press

“Master/Slave switch” to disable status ( ), the function is disabled and the Slave On LED will be on.

Status & Indicator Table

Status

1.

Utility is normal.

2.

Utility fails but UPS is providing power.

Utility fails

Master/Slave function is enabled and the connecting load on master output is above 20W.

Master/Slave function is enabled and the connecting load on master output is below 20W.

Master/Slave function is disabled.

Indicator

Power LED (Green) on

Power LED (Green) off

Slave On LED (Yellow) on

Slave On LED (Yellow) off

Slave on LED (Yellow) on

5. Important Safety Warning (SAVE THESE INSTRUCTIONS)

To safely operate this unit, please read and follow all instructions carefully.

Read this manual thoroughly before attempting to unpack, install, or operate.

You may keep this quick guide for further reference.

CAUTION: The product must be used indoor only.

CAUTION: Do not place the unit near liquid or in an excessively damp environment.

CAUTION: Do not place the product directly in the sun or near a hot source.

CAUTION: Do not let liquid or foreign objects enter the product.

CAUTION: Ground the product using a 2P + ground sockets.

CAUTION: When installing the product, ensure that the sum of the leakage currents of the product and the devices it supplies not exceed 3.5mA.