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Upgrade Firmware

3

 

5

1

 

Attach 

FUT

 to 

Unit’s Firmware Upload 

port. The update begins automatically.

Ground RMU and Ground Connections to Earth Ground

1

 

Do not 

ground the RMU if unit is inside rectifier or attached to the external 

rectifier case. 

 

If RMU is attached on another pole (not inside or attached to external 

rectifier case)

, ensure the RMU’s ground is connected to a 

common ground 

point

 on the rectifier chassis.

2

  Ground connection to earth ground.

a

 

If there is a ground rod, check connection and ensure it is connected to rectifier 

chassis.

b

 

If there is no ground rod, install one if possible. If one cannot be installed, make a 

note in records that no ground rod is installed.

 

2

 

LED lights on the 

FUT

:

Status

 LED light indicates when 

FUT

 is updating or complete. 

Activity

 LED light flashes during the verification and update process. 

IMPORTANT:

 Unit must complete packet transmission to complete the update. If 

packet transmission is not successful, repeat the firmware update process.

IMPORTANT:

 

 Do not turn off the unit during the update process. 

3

 

When the 

Completed

 status light turns on and the 

Activity

 light turns off, 

disconnect the 

FUT

.

4

  LED lights on the 

Unit

:

The 

Acquiring Signal

 light flashes to indicate 

Unit

 is searching for satellite 

signal.

The 

Packet Queue

 light flashes to indicate 

Unit 

is transmitting. The light 

turns off when Bullhorn Web receives the packet.

Unit

 automatically sends a packet when update is complete.

Install DC Surge Suppressor

1

 

Replace existing 

surge suppressor on

 

DC

 side of stack with 

DC

 

Surge Suppressor

 

from kit.

NOTE:

 For 

JA rectifiers

 

 

 black/red leads = DC side of stack; yellow/white leads = AC 

side of stack. You will need to replace the 

Surge Suppressor

 for 

DC 

side of stack.

4

Common Ground Location 

on Rectifier Chassis

DC Surge Suppressor

5

  Connect to unit using the USB cable. Open 

Bullhorn Tools

 and complete the following:

a

  Verify that firmware was updated to version 

4.7

.

b

 

Ensure the 

Alarm Measurement Interval

 field is set to 240 minutes.

c

 

Ensure 

Channel 5

 is enabled and the 

accumulator 

is turned on.

d

 Ensure 

Channel 6

 is enabled.

c

 

Ensure 

all 

ground connections are installed to single point on rectifier chassis, including 

DC Lightning Arrestor

ground rod, and potentially the RMU. A 1/4" bolt can be installed on rectifier chassis that connects ground rod to 

the bolt via a copper wire (externally) and all internal ground connections (internally).

IMPORTANT:

 

I

f unit’s firmware version is 

4.7

 or later, skip this step. You can check firmware version through your 

Bullhorn Web

 account or by connecting the unit to 

Bullhorn Tools

. Be sure to 

disconnect from Bullhorn Tools 

before beginning the upgrade process.

© 2020 American Innovations, Ltd. 

Lightning Arrester Surge Kit Installation Quick Reference Guide

For additional information or questions, please contact Technical Support at 1-800-229-3404 or [email protected]

RM4011 Port, Switch, and LED Lights

Part No. 122248-000 Rev. 1

2 of 2

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