Trinity SLM102 User manual

SLM102 – Operational Manual
TRINITY
[1]
USER’S MANUAL
SLM102
0.2 Class Multifunction Power and Energy meter
This document contains the latest technical information about SLM102 which
is a micro-controller based 0.2 Class Multifunction Power and Energy meter.
The unit is tested against latest "MTE" Standard Model PRS400.3 having
basic accuracy of 0.02%, traceable upto International Standards derived using
appropriate ratio techniques.
The product, SLM102 is sophisticated electronic equipment, and the user is
advised to read this User’s Manual carefully before attempting to install or
operate the equipment.
Published on:------
Document Version: 1.0

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Warranty statement
Trinity warrants to the original retail purchaser of the Trinity product enclosed with this
limited warranty statement that the product, if purchased new and used in the India
conforms to the manufacturer’s specifications and will be free from defects in
workmanship and materials for a period of one year from the date of original
purchase, unless expressly stated otherwise by Trinity, in a written format.
Should your Trinity product prove defective during the warranty period, please bring
the product securely packaged in its original container or an equivalent, along with
proof of the date of original purchase, to our Trinity Dealer or Factory. You are
responsible for all costs (shipping, insurance, travel time) in getting the product to the
service location. Trinity will, at its option, repair or replace on an exchange basis the
defective unit, without charge for parts or labor. When warranty service involves the
exchange of the product or of a part, the item replaced becomes Trinity property. The
replacement unit may be new or refurbished to the Trinity standard of quality, and at
Trinity’s option, the replacement may be another model of like kind and quality.
Trinity’s liability for replacement of the covered product will not exceed the original
retail selling price of the covered product. Exchange or replacement products or parts
assume the remaining warranty period of the product covered by this limited warranty.
What This Warranty Does Not Cover:
This warranty does not apply to refurbished or reconditioned products. This warranty
covers only normal use in India. This warranty does not cover damage to the Trinity
product caused by parts or supplies not manufactured, distributed or certified by
Trinity. This warranty is not transferable. This warranty does not cover third party
parts, components or peripheral devices added to the Trinity product after its
shipment from Trinity. Trinity is not responsible for warranty service should the Trinity
label or logo or the rating label or serial number be removed or should the product fail
to be properly maintained or fail to function properly as a result of misuse, abuse,
improper installation, neglect, improper shipping, damage caused by disasters such
as fire, flood, and lightning, improper electrical current, interaction with non-Trinity
products, or service other than by an Trinity Authorized Service.
The warranty and remedy provided above are exclusive and in lieu of all other
express or implied warranties including, but not limited to, the implied
warranties of merchantability or fitness for a particular purpose. In the event,
the remedies above fail, Trinity’s entire liability shall be limited to a refund of
the price paid for the Trinity product covered by this limited warranty. Except
as provided in this written warranty, neither Trinity Energy Systems Pvt. Ltd.
nor its affiliates shall be liable for any loss, inconvenience, or damage,
including direct, special, incidental, or consequential damages, resulting from
the use or inability to use the Trinity product, whether resulting from breach of
warranty or any other legal theory.

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Contents
Introduction ................................................................................................................4
Main Features Available in the Unit ......................................................................4
Technical Specifications ....................................................................................... 7
Installation and Commissioning.............................................................................11
3P4W Installation Mode ......................................................................................11
3P3W Installation Mode ......................................................................................13
Connection Scheme............................................................................................14
RS485 Connection ..............................................................................................15
Operational Details...................................................................................................16
Programming Mode ................................................................................................17
Setting CT-Primary and date according to RTC .................................................17
Setting PT Ratio and Time according to RTC ....................................................18
Setting Log Duration, Demand Window and Unit Address.................................19
Selecting Demand On, Installation type and CT-Secondary ..............................20
Setting Four Alarm Relays, Alarm On, Alarm Value and Alarm Hysteresis .......21
Setting Four Events, Event On, Event Value and Event Hysteresis ..................23
Selecting Baud Rate for RS485 Port and Changing Password..........................24
Setting IP Address .............................................................................................. 24
Setting MAC Address..........................................................................................25
Resetting Demand Manually / Daily/Monthly......................................................27
Resetting Energy.................................................................................................28
Resetting Minimum and Maximum Parameters..................................................28
Resetting KW Demand and KVA Demand .........................................................29
Resetting Log ......................................................................................................30
Resetting Events Logging ................................................................................... 30
Resetting All Parameters ....................................................................................31
Run Mode ...............................................................................................................32
Run Mode Displays .............................................................................................32
Communications......................................................................................................47
MODBUS RTU on RS485 Port ........................................................................... 47
Ethernet TCP/IP Communication........................................................................ 48
SLM102 connected as Mini Web Server to a web browser. .......................48
Data Logging and USB Port................................................................................ 49
Installing the USB Software ................................................................................49
Installation of USB driver .................................................................................... 50
Handling the Logger Window..............................................................................53
Downloading the Logged data ............................................................................53
Exporting the Logged Data including Min/Max Events and Harmonics Data.....54
Graph Representation......................................................................................... 55
Plotting a Graph for Logged data........................................................................ 55
Programming Mode Using USB Utility................................................................57
Control Outputs........................................................................................................59
Alarm Action........................................................................................................ 59
SLM102 as a Demand Management ..................................................................60
Appendix...................................................................................................................61
Address map of RS485 Port for various parameters of both 3P4W and 3P3W. 61

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Introduction
SLM102 is a micro-controller based 0.2 Class Multifunction Power and Energy meter
which not only measures a host of electrical parameters to display three rows of eight
digits, of Red Seven Segment LEDs display along with eighteen LED indicators. The
unit acts as a comprehensive load managing device due to its four numbers of
outputs relay contacts. These outputs are individually field programmable for both
the parameter on which to generate an alarm as well as the values on which to
activate an alarm and deactivate it.
The unit is meant for use in three phase four wire and three phase three wire
systems. The installation type, CT Ratios and PT Ratios are site selectable. The unit
can also be used as Load Manager with its four relay contacts as well as Demand
Controller. The method of Demand calculation i.e. Sliding window, Fixed window can
also be selected at site.
SLM102 has three ports for communication i.e. RS-485 for connection to
SCADA/EMS, USB 2.0 for downloading of logged data and programming of field
parameters, and Ethernet Port with TCP/IP protocol support for connection with
LAN/Internet. It has 2 MB of memory for data logging of all measured parameters,
min-max values and events.
SLM102 is a versatile meter, with all the features needed to implement a robust
electrical load management system. It can be configured to suit most control and
communication needs.
Main Features Available in the Unit
Exceeds class 0.2 revenue accuracy in Power & Energy Metering.
On board Ethernet port supporting TCT/IP protocol. Acts as a small web-
server. Also supports MODBUS TCP/IP.
RS485 port with MODBUS-RTU protocol.
Demand Measurement: Fixed or Sliding for KW or KVA.
Predictive Demand for Fix 30 minutes Window
Harmonics measurement: All six waveforms upto 29th including THD.
Bright Red LED display. Three rows of 8-digits each ensure unbroken display
even large energy register values.
Four relay outputs for Alarm & Trip. Limits are field programmable.
Event definition and logging.
Data logging of all parameters for load pattern analysis. 2 MB memory on-
board.
USB 2.0 port to download logged data.
USB 2.0 port based programming of field selectable parameters.

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Comprehensive and Accurate Measurement:
3ΦVoltage (L-N), 3ΦVoltage (L-L), 3ΦCurrent
KW (3Φand Total), KVAR (3Φand Total), KVA (3Φand Total), PF (3Φand
Total)
Bidirectional KWh, KVAh, KVARh, Frequency, THD and Demand & MD
Advance Measurement Features:
SLM102 also measures the minimum & maximum values and also allows definition
of events, so that the user can define the parameter of interest, event definition value
and related time.
Voltage min/max. -
3ΦL-N
Voltage min/max. - 3ΦL-L (applicable only for 3P3W)
Current min/max. - 3Φ.
Hz min/max.
Active Power min/max. - 3Φ& Σsystem
Apparent Power min/max. - 3Φ& Σsystem
Harmonic Measurement
SLM102 measures the odd harmonics for 3Φvoltages and 3Φcurrents upto 29th,
including THDs for each waveform.
Relay Outputs Options
•Programmable relays for alarm or trip.
•Alarm relays are individually configurable for different parameters.
•Maximum Demand measurement in Sliding Window, or fixed window modes for
effective management of demand
Data Logging
•ON board 2 MB of Memory.
•Logs all Min. /Max. Values. (Voltage, Current, Watt, VA, System Watt, System VA,
PF and Frequency).
•Logs all electrical parameters, real-time and integrated (energies and demands)
and harmonics to get complete Energy system snap-shot.
•Events Logging: 4 Events can be programmed by the user for: Each event log
consists of parameter of interest, date and time of event occurred.

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Communications
•USB port for downloading of logged Data and Programming of field parameters.
•Supports MODBUS-RTU protocol on RS485
•Ethernet (TCP/IP). Also supports MODBUS-TCP/IP protocol
•Acts as a mini web-server
Display
•Easy user interface through four push buttons switches.
•Bright Red LED Display. Three rows of 8-digits each ensure unbroken display of
even large energy register values
•Two LEDs for Active and Reactive Energy (1000 impulse / KWh or KVARh)
SLM102

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Technical Specifications
True RMS Basic Parameters
Parameter Mode
Type Statistics Symbol 3P4W 3P3W
Voltage
(Volts L-N)
Direct Voltage Input
PT Ratio
Range of Reading
Accuracy
: 0 to 300V AC
: Programmable
up to 66KV
: 0.0 to 66KV
: 0.2% of Reading
:(50 < V < 300)
Vr √-
Vy √-
Vb √-
Voltage
(Volts L-L)
Direct Voltage Input
PT Ratio
Range of Reading
Accuracy
: 0 to 450V AC
: Programmable
up to 66KV
: 0.0 to 66KV
: 0.5% of Reading
:(85 < V < 545)
Vry √√
Vbr √-
Vby √√
Current
(Amps
Ir, Iy, Ib)
Secondary Current
Input
CT Ratio
Range of Reading
Accuracy
: 1A or 5A
: Programmable
5A to 5000A
: 0.00 to 5000A
: 0.2% of Reading
(0.02 Ib< I < 1.2 Ib)
Ir √√
Iy √-
Ib √√
Line Frequency 45 to 55 Hz,
Accuracy : 0.5% of Reading Hz √√
Power
Parameter Mode
Type Statistics Symbol 3P4W 3P3W
Active
Power (P)
Accuracy : See Table-1
( 0.5 < COSǾ< 0.8 )
(P) R-Phase √√
(P) Y-Phase √-
(P) B-Phase √√
Reactive
Power (Q)
Accuracy : See Table-1
( 0.5 < SINǾ< 0.8 )
(Q) R-Phase √√
(Q) Y-Phase √-
(Q) B-Phase √√
Apparent
Power (S) Accuracy : 0.3% of Reading (0.01 Ib ≤I < Imax)
(S) R-Phase √-
(S) Y-Phase √-
(S) B-Phase √-
System
Active
Power (P)
Accuracy
: See Table-1
( 0.5 < COSǾ< 0.8 ) ∑-P √√
System
Reactive
Power (Q)
Accuracy : See Table-1
( 0.5 < SINǾ< 0.8 ) ∑-Q √√
Apparent
Power (S) Accuracy : 0.3% of Reading (0.01 Ib ≤I < Imax) ∑-S √√
Power
Factor
0.5 % for 0.5 < |PF| < 0.8,
(0.05 Ib < I < 1.2 Ib)
PF R-Phase √-
PF Y-Phase √-
PF B-Phase √-
System PF √√

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Table 1- Percentage Error Limits for Power
Value of Current Power Factor Percentage Error Limits
0.01 Ib ≤I < 0.05 Ib 1.0 ±0.4
0.05 Ib ≤I ≤Imax 1.0 ±0.2
0.02 Ib ≤I < 0.1 Ib 0.5 Lagging ±0.5
0.8 Leading ±0.5
0.1 Ib ≤I ≤Imax 0.5 Lagging ±0.3
0.8 Leading ±0.3
Energy
Parameter Mode
Type Statistics 3P4W 3P3W
Total Active
Energy (KWh)
Range of reading
Accuracy
: 0 to 9999999.9 MWh
: 0.2S as per IS14697:1999. √√
Total Reactive Energy
(KVARh)
Range of Reading
Accuracy
: 0 to 9999999.9 MVARh
: 0.2S as per IS 14697:1999. √√
Total Apparent Energy
(KVAh)
Range of Reading : 0 to 9999999.9 MVAh
√√
Demand
Parameter Mode
Statistics Symbol 3P4W 3P3W
Active Power
(KW) Demand : Sliding & Fixed Selectable KWDMND √√
Apparent Power
(KVA) Demand : Sliding & Fixed Selectable KVADMND √√
Power Quality
Parameter Mode
3P4W 3P3W
Harmonics for Voltages(3rd to 29th ) √√
Harmonics for Currents(3rd to 29th ) √√
THD for each voltage √√
THD for each current √√

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Minimum-Maximum
Parameter Mode
Type Statistics Symbol 3P4W 3P3W
VOLTS
Min-Max
Volts
(Volts L-N)
(Volts L-L)
Minimum Value of Volt
Vr √-
Vy √-
Vb √-
Vry - √
Vbr - -
Vby - √
CURRENT
Min-Max
Current
(Amps
Ir, Iy, Ib) Minimum Current Value
Ir √√
Iy √-
Ib √√
HZ
Min.–Max.
Line Frequency Minimum Line Frequency Hz √√
WATT
Min.-Max.
Active Power
(P)
Minimum Active Power
(P)
R-Phase √√
(P)
Y-Phase √-
(P)
B-Phase √√
VA
Min.-Max.
Apparent Power (S) Minimum Apparent Power
(S)
R-Phase √-
(S)
Y-Phase √-
(S)
B-Phase √-
SYSTEM
WATT
Min.-Max.
System Active
Power
(P)
Minimum System Active Power ∑-P √√
SYSTE
M
VA
Min.-Max.
System Apparent Power
(S)
Minimum System Apparent Power ∑-Q √√
DEMAND
Max. Demand Maximum Demand Value.
KW
or
KVA
√√
Predictive Demand Fix-30 minutes Window
KW
or
KVA
√√

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Input Specifications
Supply : Three Phases and Neutral of a 3P4W
system / three phases of a 3P3W system
Voltage
Direct Voltage Input : Up to 480V L-L and 300V L-N
PT Ratio : Programmable up to 66KV
Site selectable.
Range of Reading : 1-66KV
Burden : 0.5VA
Current
Secondary Current
Input : 5A or 1A
Range of Reading : 5A – 5000A
Burden : < 1.0VA
Overload : 5A CT = 6A RMS Continuous
1A CT = 5A RMS Continuous
Power Supply:
Self Power. Unit has in-built 3 phase supply with an operating range of 50VAC -
480 VAC, 50-60 Hz.
Output Specifications
Programmable Relay Output
Relay outputs : 4.
Relay rating : 3A @ 230 VAC, Resistive load.

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Installation and Commissioning
The SLM102 supports two installation modes – 3P4W and 3P3W. The installation
processes of these modes are described below:
3P4W Installation Mode
Follow these steps to install / commission the unit.
1. Push the unit into the panel and mount using the clamps provided. The unit is
not required auxiliary supply as unit has in-built 3 phases supply with an
operating range of 50VAC - 480VAC, 50-60 Hz.
2. Connect the three phases with the phase sequence being R-Y-B to the
terminals marked U1, U2 and U3 respectively. Make sure that the three
phases coming to the unit come through control fuses of 1.0 Amp rating. This
will protect the electronics inside from damage due to severe over voltages or
phase faults in the system.
3. Connect the neutral to the terminal marked U4.
4. Connect the two wires from the R-phase CT to terminals marked M1 & L1
such that S1 from CT goes to M1 on the unit. Connect the two wires from the
Y-phase CT to terminals marked M2 & L2 such that S1 from CT goes to M2
on the unit. Connect the two wires from the B-phase CT to terminals marked
M3 & L3 such that S1 from CT goes to M3 on the unit.
5. Switch on the three phase supply as well as Auxiliary supply. The unit will
come alive and display power information such as factory location for about
three seconds and then, it will display the first page of Run Mode.
6. If there is very little current or no current in the CT circuits, the unit may show
PFs as 0.999 or 1.000. This will go away as soon as the current builds up in
the CTs, above 0.4 % of rated CT.

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7. Now, the unit needs to be programmed for the various parameters which are
field programmable. For this refer to next section “OPERATIONAL DETAILS”
8. The unit is ready for operation.

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3P3W Installation Mode
Follow these steps to install / commission the unit.
1. Push the unit into the panel and mount using the clamps provided. The unit is
not required auxiliary supply as it has in-built 3 phase supply with an operating
range of 50VAC - 480 VAC, 50-60 Hz.
2. Connect the three phases with the R phase to terminal U1, B phase to
terminal U3 and Y phase to terminal U4. Make sure that the three phases
coming to the unit come through control fuses of 1.0 amp rating. This will
protect the electronics inside from damage due to severe overvoltages or
phase faults in the system.
3. Connect the two wires from the R-phase CT to terminals marked M1 & L1
such that S1 from CT goes to M1 on the unit. Connect the two wires from the
B-phase CT to terminals marked M3 & L3 such that S1 from CT goes to M3
on the unit.
4. Switch on the three phase supply. The unit will come alive and display power
receiving information such as factory location for about three seconds and
then, it will display the first page of Run Mode.
5. If there is very little current or no current in the CT circuits, the unit may show
PFs as 0.999 or 1.000. This will go away as soon as the current builds up in
the CTs, above 0.4 % of rated CT.
6. Now, the unit needs to be programmed for the various parameters which are
field programmable. For this refer to next section “OPERATIONAL DETAILS”.
7. The unit is ready for operation.

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Connection Scheme

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RS485 Connection

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Operational Details
The load manager SLM102 is a versatile meter, with all the features needed to
implement with a robust electrical load management system. It can be configured to
suit most control and communication needs.
The unit is achieved by making as many parameters field programmable, as much
as possible. There are basically three Modes of operation:
1. Programming Mode
2. Programming Mode using USB Utility
3. Run Mode
For Programming Mode using USB Utility, refer to last section, ”Data Logging and
USB Port”.
After supplying power (50 VAC - 480 VAC) to the three phases, the unit displays
immediately power receiving information such as Factory name, RTC and then,
enters into first page of Run Mode with the following display.
Now, user will enter into Programming Mode to define for all the desire parameters
and can also operate the Run Mode by pressing keys provided with the following:

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Programming Mode
The unit is designed with a default password protection,”1947”. The password is also
changeable from 0 to 9 according to user’s desire (see in the next section,
programmable parameter, “Change Password”). The user will therefore enter a
password before entering into Programming Mode. Now, press key for about 4
seconds and then, the password display will prompt with a four digits of zeroes of
which first zero will be blinking.
To enter the password, press key one time to set for 1; press key to shift into
second digit; Press again nine times to set for 9, press key again to shift into
3rd digit and press key four times to set for 4 and then, press key to shift into
4th digits and press key seven times to set for 7. If any digit entered is wrong and
needs to enter again, press key several times till the digit becomes bilking and
set as above steps. After entering the default password, press key to enter into
Programming Mode (the display is shown in the next section).
Hence, if the unit is in Programming Mode and keys are not operated for about 4
minutes, unit will return into Run Mode.
Setting CT-Primary and date according to RTC
CT-Primary
The CT Primary should be set to give actual current values for CT operated meter
and is also freely programmable from 5A to 5000A.
Date
The date is RTC and can also be set with the format of date, month and year. i.e.,
DD/MM/YYYY format.
To set CT Primary and Date, proceed the following instructions.

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1. After entering the password as before, the unit will prompt with the following
display.
2. In the above first row, CT-Primary displays along with character ‘C’ blinking
that shows the parameter is selected for setting. Press key that will start
blinking with the first digit of a value. Set CT-Primary by pressing and
keys and press key to confirm the setting so that the blinking character will
also return.
3. Press key that starts blinking DATE(dd) in second row which shows
DATE is selectable. Press key that blinks digit (i.e., 10) in third row. Set
DATE by pressing and keys as per current date. Press key to
confirm the setting so that the blinking character will also return.
4. Press key to set MONTH that will start blinking with character (MM) in
second row. press key that will start blinking with digit in third row. Set
MONTH by pressing and keys. Press key to confirm the setting
so that the blinking character will also return.
5. If the setting is completed press key for about four seconds to return into
Run Mode. Otherwise, press key to enter into next programmable
parameter.
Setting PT Ratio and Time according to RTC
PT Ratio
The PT-Ratio should be set so as to give actual voltage for PT-operated meter. The
PT Ratio is selectable from any one of the following: 1, 30, 60, 100, 200, 300 and
600.
Time
The Time is RTC and can also be set with the format of hh.mm.ss.

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To set PT Ratio and Time, proceed the following instructions.
1. In previous programmable parameters, press key till the next display
enters such as shown below.
2. Set PT Ratio and TIME such as previous steps of CT Primary and DATE
setting.
Setting Log Duration, Demand Window and Unit Address
Log Duration
For data logging, the Log Duration can be specified from 1 to 60 minutes. SLM102
has the capability to log data on its own Non-volatile RAM. This data is logged in an
FIFO buffer. Once the buffer (23271 records) is full, the oldest data is discarded and
the newest data is filled into the buffer. This data can then be downloaded by using a
software utility provided by Trinity, into a PC, record by record.
Demand Window
The unit supports two types of demand window for the calculation of demand such
as Fixed window or Sliding window. In case of Sliding Window, the method is
selectable to either 30 minutes interval or 15 minutes interval. In case of Fixed
Window, the method is 30 minutes interval only and hence, Predictive Demand will
also display in Run Mode.
Unit Address
The unit address is for RS485 communication port only. For communicating in
between the unit and host, the same unit address should be set from 1 to 255
accordingly.
To set the Log Duration, Demand Window and Address, proceed the following
instructions.
1. In the previous programmable parameter, press key till the next display
enters such as shown below

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2. In the above first row, Log Duration displays along with character ‘L’ blinking
that shows the parameter is selected for setting. Press key that will start
blinking with first digit. Set Log Duration by pressing and keys and
press key to confirm the setting so that the blinking character will also
return.
3. Press key to set for seond row, Dimand Window that Window will start
blinking with its first character, ‘w’ and now set as above steps of Log duration.
Similalry set Unit Address also.
4. If the setting is completed press key for about four seconds to return into
Run Mode. Otherwise, press key to enter into next programmable
parameter.
Selecting Demand On, Installation type and CT-Secondary
Demand On
Both the two KW Demand and KVA Demand can be set according to user’s desire
for the calculation of Demand to either KVA or KW with an integration period of 30 or
15 minutes.
Installation Types
Unit supports two types of Electrical Installation such as 3P4W and 3P3W. User
should select the installation type accordingly.
CT-Secondary
The CT Secondary can be selected to either 1 or 5 and the user should select the
CT Secondary to give actual current value for CT operated meter.
To set the above parameters, proceed the following instructions