Electro Industries/GaugeTech Nexus 1250 User manual

Electro Industries/GaugeTech
The Leader In Power Monitoring and Smart Grid Solutions
Doc# E107754 V.1.02QS-1
Nexus® 1250/1252 Meter Quick Start
Hardware Installation
Installing the Meter
Mount the Nexus® 1250/1252 meter against a rm, at surface. Use a #10 screw in each of the four slots on
the ange to insure that the unit is installed securely. For safety reasons, mount the meter in an enclosed and
protected environment, such as in a switchgear cabinet.
Installing an External Display
The Nexus® 1250/1252 meter LED Display Model # P40N+ mounts using a
standard ANSI C39.1 drill plan.
1. Secure the four mounting studs to the back of the panel with the supplied nuts.
2. Insert one end of the supplied RS485 cable into Port 3 of the Nexus® meter
(or to another Port set to a Baud Rate of 9600). Insert the other end of the cable
into the back of the Nexus® P40N+ Display.
NOTE: RS485 communication is viable for up to 4000 feet (1219 meters). If your cable
length exceeds 200 feet you must use a remote power supply, such as EIG’s PSIO.
PC, Connected to RS232/RS485 Connection
External Display, Connected to Port 3
Output Modules, Connected to Port 4
Modem/Ethernet
Option
RJ11 or RJ45
Connection
Ports 1 2 3 4
For Programming
Nexus® 1250/1252 Meter
Connect to Meter

Doc# E107754 V.1.02QS-2
Electro Industries/GaugeTech
The Leader In Power Monitoring and Smart Grid Solutions
Electrical Installation
Installing Optional Output Modules
1. Secure the mounting brackets to the Output module using the supplied screws
(#440 pan-head screws).
2. Secure the brackets to a at surface using a #8 screw with a lock washer.
• Six feet of RS485 cable harness is supplied. Connect the Output module’s
Male RS485 Side Port to connect to the meter’s Port 4 or to another module’s
male RS485 side port.
• If multiple Output modules are connected together, secure a mounting bracket to both
ends of the group. (See gure below.) Connect multiple
Output modules by connecting the Male RS485 port on one module to
the Female RS485 port on the next module. See Chapter 9 of the meter’s
Installation and Operation Manual for additional information.
Female RS485
Side Port
Male RS485
Side Port
Mounting Brackets
I/O Port
4-Wire, 3-Element Wye, with 4 CTs4-Wire, 3-Element Wye, with 3 PTs and 3 CTs
0.25A 0.25A
NOTE: This page and the next show some possible wiring congurations. Refer to the meter’s manual for additional congurations.

Electro Industries/GaugeTech
The Leader In Power Monitoring and Smart Grid Solutions
Doc# E107754 V.1.02QS-3
Programming the Meter through CommunicatorPQATM Software:
1. Using the enclosed CD, install CommunicatorPQATM software on your PC or
laptop.
2. From the CommunicatorPQATM Main screen, click the Connect icon in
the Icon bar at the top of the screen.
3. You will see the Connect screen, shown on the right.
NOTE: The settings on the right are for a Serial connection using RS485. For
instructions on configuring a connection using the Internal Modem (INP2) or
Network (INP200 or INP202) options, see the CommunicatorPQATM Software
User Manual, on the enclosed CD.
4. Click Connect. The software will connect to the meter.
5. Click the Profile icon in the Icon bar at the top of the screen. The Device
Profile screen opens. See the screen shown on the right.
NOTES:
o Instructions for a few basic settings are given in this Quick Start Guide.
Refer to the CommunicatorPQATM Software User Manual, on the
enclosed CD, for additional instructions.
oClick Help>Contents from the Title Bar at the top of the screen to open
the User Manual online.
3-Wire, 2-Element Open Delta with 3 CTs
3-Wire, 2-Element Open Delta with 2 PTs and 2 CTs
0.25A 0.25A

Doc# E107754 V.1.02QS-4
Electro Industries/GaugeTech
The Leader In Power Monitoring and Smart Grid Solutions
CT, PT Ratios and System Hookup
1. From the Device Prole screen, double-click General Settings>
CT, PT Ratios and System Hookup. The current settings are shown on
the screen.
2. Double-click one of the settings to open the CT and PT Ratios screen,
shown on the right.
3. You can enter CT and PT Ratios and select Hookup and Frequency
from the pull-down menu.
4. Click OK to close the screen. Click Update Device from the Device
Prole screen to save your settings.
Communication Settings
1. From the Device Prole screen, double-click General Settings>
Communications. The current settings for the meter’s Ports are
shown on the screen.
2. Double-click one of the Port settings to open the Communications
Settings screen, shown on the right.
3. You can set the settings for both Communication Ports, as well as
the optional Modem and Network settings. Click Help to view
instructions for conguring these settings.
4. Click OK to close the screen. Click Update Device from the
Device Prole screen to save your settings.
Uploading a Device Prole and Naming the Meter
To upload a previously saved Device prole to the meter:
1. From the software's Main screen, click the Device Profile icon.
2. The Device Profile screen opens. Click the Load button at the bottom
of the screen.
3. A window opens showing you any saved Device Profiles (these
are .nps files).
Select the profile you want to load and click Open.
4. The saved Device profile is loaded into the application.
5. To give the meter a unique name, click General Settings>Labels.
6. You will see the sub-menu shown on the right.
Click Meter Designation to open the Labels screen.
7. The Labels screen is shown on the right. Enter a unique name
for the connected meter in the Meter Designation field and
then click OK.
8. You can now click the Update Device button in the
Device Profile screen to upload this Device profile to the
connected meter.
03182020