User Manual
2016 v1.0
SMARTRAIL X835-MID
DIN Rail Smart Energy Meter for Single and
Three Phase Electrical Systems
1
Introduction
This document provides operating, maintenance and
installation instructions. This unit measures and displays
the characteristics of Single Phase Two Wire (1P2W), Three
Phase Three Wire (3P3W) and Three Phase Four Wire (3P4W)
networks. The measuring parameters include Voltage (V),
Current (A), Frequency (Hz), Power (kW/KVA/KVAr), Power
Factor (PF), Imported, Exported and Total Energy (kWh/kVArh).
The unit also measures Maximum Demand Current and Power,
this is measured over preset periods of up to 60 minutes.
This particular model accommodates 1A or 5A Current
Transformers and can be configured to work with a wide range
of CTs. It also comes with a complete comms capability with
built in Pulse and RS485 Modbus RTU outputs, configuration
is password protected.
This unit can be powered from a separate auxiliary supply (AC
or DC). Alternatively, it can be powered from the monitored
supply by linking the voltage reference and neutral reference in
to terminals 5 & 6 (Please refer to wiring diagram).
1.1
Unit Characteristics
The SMARTRAIL X835 can measure and display:
• Phase to Neutral Voltage and THD% (Total Harmonic
Distortion) of all Phases
• Line Frequency
• Current, Maximum Demand Current and Current THD% of
all Phases
• Power, Maximum Power Demand and Power Factor
• Imported, Exported & Total Active Energy
• Imported, Exported & Total Reactive Energy
The unit has a Password-Protected set up menu for:
• Changing the Password
• System Configuration - 1P2W, 3P3W, 3P4W.
• Demand Interval Time
• Reset for Demand Measurements
• Pulsed Output Duration
1.2
Current Transformer Primary Current
This unit requires configuring to operate with the appropriate
curren transformer(s), the optional secondary currents are
1A or 5A. It is programmed by inputting the ratio (CT Primary
divided by the CT Secondary). It can be used on primary
currents up to 6000A.
On the MID Version, you can only program
the CT Rate ONCE.
1.3
RS485 Serial – Modbus RTU
This unit is compatible with remote monitoring through RS485
Modbus RTU. Set-up screens are provided for configuring the
RS485 port. Refers to section 4.8.
1.4
Pulsed Outputs
The SMARTRAIL X835 has Two Pulsed Outputs that can be
set for active (kWh) or reactive (kVArh) energy. Terminals 11 &
12 have a fixed output of 3200imp/kWh. Terminals 9 & 10 are
configurable within the setup menu.
2
Start Up Screens
The first screen lights
up all display segments
and can be used as a
display check.
The second screen
indicates the firmware
installed in the unit and
its build number.
The interface performs a
self-test and indicates the
result if the test passes.
*After a short delay, the screen will display active
energy measurements.
3
Measurements
The buttons operate as follows:
Selects the Voltage and Current display
screens. In Set-up Mode, this is the
“Left” (press) or “Escape” (hold 3sec)
button.
Select the Frequency and Power factor
display screens. In Set-up Mode, this is
the “Up” (press) button.
Select the Power display screens.
In Set-up Mode, this is the
“Down” (press) button.
Select the Energy display screens.
In Set-up mode, this is the
“Right” (press) or “Enter” (hold 3sec)
button.
3.1
Voltage and Current
Each successive press of the
button selects a new parameter:
Phase to neutral voltages.
Current on each phase.
Phase to neutral voltage
THD%.
Current THD% for each
phase.
3.2
Frequency and Power Factor and Demand
Each successive press of the
button selects a new range:
Frequency and Power
Factor (total).
Power Factor of each
phase.
Maximum Power Demand.
Maximum Current
Demand.
3.3
Power
Each successive press of the
button select a new range:
Instantaneous Active
Power in kW.
Instantaneous Reactive
Power in kVAr.
Instantaneous Volt-Amps
in KVA.
Total kW, kVArh, kVA.
3.4
Energy Measurements
Each successive press of the
button selects a new range:
Imported active energy
in kWh.
Exported active energy
in kWh.
Imported reactive energy
in kVArh.
Exported reactive energy
in kVArh.
Total active energy in kWh.
Total reactive energy in
kVArh.
Please note the register is 9999999.9 display over two lines.
4
Set Up
To enter set up mode, hold the
button for 3 seconds,
until the password screen appears.
The set up is password-
protected so you must
enter the correct password
(default ‘1000’) before
processing.
If an incorrect password
is entered, the display will
show:
PASS Err (Error)
To exit the set up menu, hold the
for 3 seconds, the
measurement screen will display.
4.1
Set up Entry Methods
Some menu items, such as Password and CT, require a
four-digit number entry while others, such as supply system,
require selection from a number of menu options.
4.1.1
Menu Option Selection
1.
Use the
and
buttons to scroll through the
different options of the set up menu.
2.
Hold the
button for 3 seconds to confirm your
selection.
3.
If an item flashes, then it can be adjusted by the
and
buttons.
4.
Having selected an option from the current layer, hold the
button for 3 seconds to confirm your selection.
5.
Having completed a parameter setting, hold the
button for 3 seconds to return to a higher menu level.
6.
On completion of all setting-up, hold the
button for 3
seconds, the measurement screen will then be restored.
4.1.2
Number Entry Procedure
When setting up the unit, some screens require the entering
of a number. In particular, on entry to the setting up section, a
password must be entered. Digits are set individually, from left
to right. The procedure is as follows:
1.
The current digit to be set flashes and then can be adjusted
using the
and
buttons.
2.
Press the
button to more right to the next digit.
3.
After setting the last digit, hold the
button for 3
seconds to save your selection.
4.2
Change Password
Use the
and
to choose the change
password option.
Hold the
button to
enter the set up menu. The
first digit will start flashing.
Use
and
to set
the first digit and press
to move right. The
next digit will flash.
Repeat the procedure for
the remaining three digits.
After setting the last digit,
Hold the
button to
save your selection.
Hold the
button for 3 seconds to exit the set up menu.
4.3
DIT (Demand Integration Time)
This sets the period (in minutes) in which the Current and
Power readings are integrated for maximum demand
measurement. The options are off; 5; 10; 15; 30 or 60 minutes.
Use the
and
buttons to select the menu
option. The screen will
show the current setting.
Hold the
button to
enter the menu option, the
current selection will flash.
Use the
and
buttons to select the
required option.
Hold the
button to
confirm the selection.
Hold the
button for 3 seconds to exit the set up menu.
4.4
Supply System
The unit has a default setting of 3 Phase 4 Wire (3P4W).
Use this section to set the type of electrical system.
Use the
and
buttons to select the menu
option. The screen will
show the current setting.
Hold the
button to
enter the menu option, the
current selection will flash.
Use the
and
buttons to select the
required option.
Hold the
button to confirm your adjustment. Hold the
button for 3 seconds to exit the set up menu.
4.5
CT Configuration
The CT options set the Secondary Current (CT2 5A or 1A) of
the Current Transformer (CT) that are used with the meter.
Use the
and
buttons to select the menu
option. The screen will
show the current setting.
Secondary CT Setting:
Hold the
button to
set the CT secondary
option: 5A (default) or 1A.
Set the CT Ratio Value:
Hold the
button to
enter the CT Ratio setting
screen. The range is from
0001 to 9999.
The CT Rate is the CT Primary divided by the CT Secondary.
For Example: 200/5A Current Transformers - 200÷5=40, so the
CT Rate would be 0040 and the CT2 would be 5.
On the MID Version, you can only program
the CT Rate ONCE.
4.5.1
CT Reversal
If the CT connections are incorrectly wired, they can be
reversed through the “Set System Continued” menu:
Use the
and
buttons to select the
menu option. Hold the
button to view the
sub-menu.
This screen will display,
you can change “Forward”
to “Reverse” on each
individual CT connection.
Hold the
button to
confirm your adjustment.
You can then move on to
IB or IC using the
and
buttons.
Hold the
button for 3 seconds to exit the set up menu.
4.6
PT
The PT option sets the Secondary Voltage (PT2 100-500V) of the
Voltage Transformer (PT) that may be connected to the meter.
Use the
and
buttons to select the menu
option. The screen will
show the current setting.
The default value is 400V.
Secondary PT Setting:
Hold the
button to
set the PT secondary
option: 100-500V.
Set the PT Ratio Value:
Hold the
button to
enter the PT Ratio setting
screen. The range is from
0001 to 9999.
The PT Rate is the PT Primary divided by the PT Secondary.
For Example: Voltage Transformer - 11000÷110=100, so the
PT Rate would be 0100 and the PT2 would be 110.
4.7
Pulsed Output
Use this section to configure the Pulsed Output Type.
Units: kVArh (default); kWh.
Use the
and
buttons to select the menu
option. The screen will
show the current setting.
Hold the
button to
enter the menu option, the
current selection will flash.
Use the
and
buttons to select the
required option. Hold the
button to confirm the
selection.
Hold the
button for 3 seconds to exit the set up menu.
