Hobut MultiPower M850-LTHN-1 Owner's manual

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M850-LTHN
MultiPower
Installation and Operation Manual
(Revision 1.0.0
July 201

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Table of Contents
Chapter 1: Meter Overview and Specifications
1.1
Hardware Overview
4
1.1.1
Voltage and Current Inputs
5
1.1.2
Model Number
plus Option Codes
6
1.1.3
Measured Values
7
1.2
Specifications
7
1.3
Compliance
10
Chapter 2: Mechanical Installation
2.1
Introduction / Cut
-
Out Details
11
2.2
Panel Mounting Procedure
11
2.3
Terminal Block Notes
12
Chapter 3: Ele
ctrical Installation
3.1
Considerations When Installing Meters
13
3.2
Voltage and Power Supply Connections
14
3.3
Terminations to Meter
15
3.4
Electrical Connection Diagrams
15
Chapter : Communications
4.1
Overview
, Optional USB to RS485
adapter, Pulse output card
16
4.2
Using the Communications Software
17
4.2.1
Software Installation
using RS485 to USB
17
4.3
Measurement Logging with MultiView
19
4.4
Network Description
21
4.5
Measurement Registers (3X and 4X
21
4.5.1
3X Re
gisters
23
4.5.2
4X Registers
29
4.6
M850
-
LTHN
-
RS
Communications and Programming Overview
30
Chapt
er 5: Using the M850
-
LTHN
Meter
5.1
Introduction
32
5.1.1
Meter Face Elements
32
5.1.2
Display Screens
33
5.2
Settings Menu
includin
g abbreviations as seen on screen
34
5.2.1
Supply (SUPP Sub
-
menu
35
5.2.2
Communications (COMMS
RS485
Sub
-
menu
37
5.2.3
Demand (DT Sub
-
Menu
38
5.2.4
Energy (ENGY Sub
-
Menu
39
5.2.5
Relay (RLAY Sub
-
Menu
40
5.2.6
Code (CODE Sub
-
Menu
41
5.2.7
EEPROM (STOR Sub
-
Menu
41
5.2.8
End (END Sub
-
Menu
41

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Chapter 6:
Configuring the M850
-
LTHN
Using the Front Panel
6.1
System Type Programming
42
6.2
Configure CT Ratio Settings
43
6.2.1
CT Ratio Programming
43
6.3
Configure VT Ratio
Settings
44
6.3.1
VT Ratio Programming
45
6.4
Configure Max Demand Time Setting
46
6.4.1
Max Demand Time Setting
47
Appendix A: Modbus Registers
A.1
3X and 4X Registers
48
A.2
Register Addresses and Modes
49
Appendix B: M850
-
LTHN
Q
uick Start Guide
50
Appendix C: Programming Screens
C.1 Main menu screen
C.2 Supply programming screen
C.3 Communications programming screen
C.4 Demand programming screen
C.5 Energy programming screen
C.6 Relay programming screen
C.7 Code programming screen
C.8 Store programming screen
C.9 End programming screen
52
52
52
52
53
53
54
54
55
55
Appendix D: Ethernet Card Installation and Set
-
Up
56
(when used with M850
-
THD
-
ET

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Chapter 1: Meter Overview and Specifications
1.1
Hardware Overview
The
M850
-
LTHN
Mult
iPower is a complete 3 phase
digital, universal metering system in a standard 96 x
96 mm DIN case. It is a cost-effective replacement
for traditional panel meters. This multi-function
power meter is suitable for low, medium and high
voltage control panels, gensets, load banks,
building management systems and power
management systems.
The M850-LTHN can be used on single phase or a
single phase 3-wire system; 3-phase 3-wire
balanced or unbalanced systems, as well as 3-phase
4-wire balanced or unbalanced systems.
With optional extra RS485 (MODBUS protocol and
pulsed output options can be purchased with the
M850-LTHN MultiPower meter. The RS485 and
Pulse output will be built in the unit to enables
remote reading of up to 32 MultiPower units on a
single 2-wire bus using MODBUS protocol. The
RS485 option is compatible with PC, PLC, RTU, data
loggers and SCADA programs.
The
M850
-
LTHN
MultiPower:
Complete single phase and 3
-
phase digital universal metering system. Covers a majority of applications
without any modifications
Measures a standard range of
19
different parameters. Easy to use and easy to program from the front
panel.
CT ratios
, PT ratios and calibration
data
are
stored in non
-
volatile EEPROM memory. In power
-
loss
conditions, the data is retained.
Four, easy
-
to
-
access, front control buttons are used for scrolling up or down through the parameters.
Unique
LCD
FSTN
display
allows the user to select back lighting color options of white, green or blue.
RS485 option and a pulsed
output option can be ordered with the
M850
-
LTHN MultiPower unit, this will
then make the part number M850-LTHN-RS-PO.
The RS485 (
MODBUS
protocol unit enables remote reading of up to 32 MultiPower meters
on a single
,
2
-
wire bus.
Pulsed output option
is v
ia a
relay and can be assigned to W.h. and VAR
.
h.
Free software for monitoring and logging
available on request
or visit
http://www.hobut.co.uk/images/HOBUT-MViewV02.zip
M850
-
LTHN
MultiPower
AC Meter

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The four front control buttons are used for scrolling up or down through the parameters being measured and
displayed. These buttons also allow programming of different current and voltage transformer ratios, demand
times, baud rates, etc.
The M850-LTHN MultiPower is housed in a 96 mm x 96 mm DIN style case. The case is constructed of black
polycarbonate and is compliant with UL 94VO. The front panel of the case has an enclosure code of IP52.
1.1.1
Voltage and Current Inputs
Voltage inputs allow measurement from 28V to 330V line-to-neutral and 48V to 600V line-to-line. This insures
proper meter safety when wiring directly to high voltage systems. The M850-LTHN has an input overload rating of
800V, AC continuous. The aux power required is 100 to 440V AC / 100 to 420V DC power systems. A separate unit
have an auxiliary voltage supply of 19 to 69V DC is available as optional extra. The M850-LTHN MultiPower operates
at 45-65Hz standard; another unit is available for 400Hz applications.
General Specifications:
Accuracy
Volts/Amps:
0.5% of reading ± 2 digits
Frequency:
0.1Hz ± 1 digit
Reactive Power:
1% of reading ± 2 digits
Apparent Power:
1% of reading ± 2 digits
Power Factor:
1% of reading ± 2 digits
Energy:
IEC 1036 Class I
Rated Un
28V to
330V
(L
-
N and 48V to 570
V (L
-
L
Un Overload
800V continuous
Burden
0.5VA
per phase
Rated In
0.5 to 6
A
(via CT
Input Overload
10 x In for 1 second
Input Burden
0.5VA per phase
Frequency
45
–
65 Hz
; 400Hz available
as separate unit
Auxiliary Voltage
100
to 440V,AC /
100 to 420V,DC
(19 to 69V,DC optional
The auxiliary supply can be connected in parallel with the measuring input voltage, but this restricts the measuring
range of the input voltage to ± 15% of nominal. If the auxiliary is separate the measuring range of the voltage input
is 10-120%.
Current Transformers:
The M850-LTHN MultiPower can be supplied as 5 Amps, 1 Amp or 0.333mV unit. The current circuit is designed for
connection to the secondary of external CT. These transformers should conform to at least accuracy class 1 or
preferably ANSI C57.13 or equal.
The secondary of these external transformers must have the same nominal current input as that specified on the
data label on the M850-LTHN. For example, if the M850-LTHN has a current ratio specified as 500/5A, then the CT
could be changed to 800/5A (or any ratio with secondary 5A and used once the current ratio has been programmed
into the M850-LTHN.

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But if the ratio change was 800/1A, the M850-LTHN would have to be returned to the factory to have the internal
circuits changed to 1 Amp at a cost or purchase a new unit.
Warning: The secondary of a current transformer must never be allowed to be in an
open circuit condition when the primary is energized. In the open circuit condition high
voltage may be present. Each current transformer secondary should be short-circuited
when not connected to the meter.
Voltage (Potential) Transformers:
Connection of voltages higher than the rated voltage that is specified on the M850-LTHN data label, is possible using
external voltage (potential transformers. These transformers must be at least Class 1 accuracy.
The secondary of these transformers must have the same nominal voltage as that programed into the meter
otherwise the reading will be incorrect.
1.1.2
Model Number for Additional M850 Units plus Option Codes
Part Number
Description
M850
-
LTHN
Standard
MultiPower AC meter; Input: 25
-
300V (L
-
N @ 5A,AC; 45
-
65Hz;
Aux: 100-440V,AC/100-420V,DC. LCD Display.
M850
-
LTHN
-
1
Standard
MultiPower AC meter;
Input: 25
-
300V (L
-
N @ 1A,AC; 45
-
65Hz;
Aux: 100-440V,AC/100-420V,DC. LCD Display.
M850
-
LTHN
-
MV
Standard MultiPower AC meter with current clamp inputs of 333mV,AC
, 45
-
65Hz; Aux: 100-440V,AC/100-420V,DC. LCD Display.
M850
-
LTHN
-
00
Standard MultiPower AC meter;
; Input: 25
-
300V (L
-
N @ 5A,AC; 400Hz;
Aux: 100-440V,AC/100-420V,DC. LCD Display.
M850
-
LTHN
-
DC
Standard MultiPower AC meter; Input: 25
-
300V (L
-
N @ 5A,AC; 45
-
65Hz;
Aux: 19-69V,DC LCD Display
M850
-
LTHN
-
RS
-
PO
Standard Mult
iPower AC meter; Input: 25
-
300V (L
-
N @ 5A,AC; 45
-
65Hz;
Aux: 100-440V,AC/100-420V,DC. LCD Display. Complete with RS485 and
Pulse output
M850
-
LTHN
-
RS
-
PO-1
Standard MultiPower AC meter; Input: 25
-
300V (L
-
N @ 1A,AC; 45
-
65Hz;
Aux: 100-440V,AC/100-420V,DC. LCD Display. Complete with RS485 and
Pulse output
M850
-
LTHN
-
RS
-
PO-MV
Standard MultiPower AC meter with current clamp inputs of 333mV,AC
Aux: 100-440V,AC/100-420V,DC. LCD Display. complete with RS485 and
Pulse output
M850
-
LTHN
-
RS
-
PO- 00
Standard Multi
Power AC meter; Input: 25
-
300V (L
-
N @ 5A,AC; 400Hz;
Aux: 100-440V,AC/100-420V,DC. LCD Display. Complete with RS485 and
Pulse output
M850
-
LTHN
-
RS
-
PO-DC
Standard MultiPower AC meter; Input: 25
-
300V (L
-
N @ 5A,AC; 45
-
65Hz;
Aux: 19-69V,DC complete with RS485 and Pulse output
M850
-
THD
-
ET
Standar
d MultiPower AC meter with
Total Harmonic Distortion
with Ethernet
connection
M850
-
BAC
Plug
-
in option for RS485
BACnet protocol
(to work with M850
-
THD only

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1.1.3
Measured Values
Phase Power L-L (V) Instantaneous Demand Amp
Phase to Neutral L-N (V) Instantaneous Demand Apparent Power
Phase Current (I) Maximum Demand Amps
Frequency (Hz) Maximum Demand Active Power
Active Power (W) Maximum Demand Apparent Power
Reactive Power (VA) Maximum Active Power Demand
Active Energy (W.h.) Maximum Reactive Power Demand
Reactive Energy (VAR.h) THD Current
Power Factor (P.F.) THD Voltage
1.2
Specifications
Input
Range:
28V to 330V (L
-
N ; 48V to 57
0V (L
-
L
Burden
:
<
0.5 VA per phase
In:
0.5A to 6A via current
transformer
Frequency:
45
–
65Hz standard; 400Hz unit also available
Secondary of CT’s must e connected to earth
Overload
UN:
800V (L
-
L continuous
IN:
10 In for 1 second
10 x In
Accuracy
Voltage
(V
:
0.5% ± 2 digits
Current
(I
:
0.5% ± 2
digits
Power (W,
VAr, VA
:
1.0% ± 2 digits
Power Factor
(PF
:
1% of range
(reading ± 2 digits
Frequency
(Hz
:
0.1 Hz
± 1 digit
Energy
(kWh, VARh
:
IEC 1036 Class 1
Auxiliary Voltage
Range:
100V to 440V,AC (45 to 65Hz
/
100V to 420V,DC
Burden:
<10VA
Display
Digits:
3 lines
,
9999
,
+
1 line 99999999, multi
colour LCD
Screen
Digit Size:
3 lines of 14.2mm, 7
segment
1 line of 6mm, 7 segment (for kW.h or kVar.h
Update Time:
1 second

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Insulation
Installation Category:
III (480V,AC L
-
L
Degree of Pollution:
2
Rated Impulse Withstand
Voltage:
IEC 60947
-
1
-
V imp: 4kV
Meters Front:
Class II
Electrical Security:
IEC 61010
-
1
Environment
Working Temperature:
32
o
F to +140
o
F (
0
o
C to +60
o
C
(Extended ranges available
Storage Tempe
rature:
-
40
o
F to +185
o
F (
-
40
o
C to +85
o
C
Relative Humidity:
0
-
95% non
-
condensing
Shock:
30G in 2 planes
Faceplate Rating:
IP52 Fron
t Panel
Enclosure
Standard DIN case:
96 mm x 96 mm x 60 mm
Panel Mounting:
4 retaining clips
Cutout:
92.8 mm x 9
2.8 mm
Applied Standards
Immunity to:
-
Electrostatic discharges:
IEC 61000
-
4
-
2
-
Level III
-
Radiated radio
-
Hz fields:
IEC 61000
-
4
-
3
-
Level III
-
Electrical fast transient /
bursts:
IEC 61000
-
4
-
4
-
Level III
-
Impulse waves:
IEC 61000
-
4
-
5
-
Level III
-
Conduct
ed disturbances:
IEC 61000
-
4
-
6
-
Level III
-
Voltage dips & short
interruptions:
IEC 61000
-
4
-
11
Emissions to:
-
Conducted a
n
d radiated
CISPR11
-
Class A
Safety:
IEC 1010; BSEN 601010
UL:
File No.
E337752
Options
:
RS485
(
M
ODBUS
protocol
Pulsed output (for W.h or VAR.h
BACnet protocol on request with M850
-
THD
Communication Format
RS485
(
MODBUS
:
Port: through back plate
Baud Rate: 38400, 19200, 9600, 4800, 2400
Parity: Odd, even, no parity
Address: 1 to
247
Data Format: 8 bi
t
Protocols:
MODBUS
(
RTU,
MODBUS
, BACnet MS/TP

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Ethernet
module
:
Supported Protocols:
When used with M850
-
THD
Telnet
Port 23
MODBUS
TCP/IP
Port 502
MODBUS
TCP
Port 4000
HTML
Port 80
A cross
-
over CAT5 Ethernet cab
le should be used if the
network card does not automatically swap lines to suit the
cable’s terminations.
Controller: Incorporates 10/100 Base-T
Factory Default Setting of module:
IP = 192.168.92.123
Subnet = 255.255.255.0
Gateway = 192.168.92.254
Mechanical Parameters
Dimensions:
Across front panel: 96mm high x 96mm wide
Depth: Front screen depth: 19mm
Meter body to edge of terminal block: 61mm
Meter body to edge of plug
-
in module: 82mm
Weight:
0.66 lbs.
Dimensions of the M850-LTHN-RS-PO
(shown in mm)

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1.3
Compliance
Compliance Standard
Applicable to
ANSI C37.90A
Insulation Surge Withstand
BS4753
Insulation Protection
, Class II
BS4889
General C
onstruction
BSEN601010
Safety
BSEN60688
General C
onstruction
CISPR11 Class
A
Conducted and radiated emissions compatibility
DIN 57411
Insulation Protection
, Class II
EN 55020 HF
Insulation Impulse Test
IEC 1010
Safety
IEC 255
-
4
Insulation Interference
IEC 348
Insulation Protection
, Class II
IEC 359
General C
onstruction
IE
C 688
General C
onstruction
IEC 801
Insulation Surge Withstand
IEC 10
36 Class I
Energy Accuracy
IEC 61000
-
4
-
2
-
Level III
Electrostatic discharge immunity level
IEC 61000
-
4
-
3
-
Level III
Radiated radio
-
Hz field immunity level
IEC 61000
-
4
-
4
-
Level III
Electr
ical fast transient / burst immunity
IEC 61000
-
4
-
5
-
Level III
Impulse wave immunity level
IEC 61000
-
4
-
6
-
Level III
Conducted disturbances immunity level
IEC 61000
-
4
-
11
Voltage dips and short interruptions immunity level
VDE
Insulation Protection
, Class I
I
(UL
E337752
UL file number
UL94 VO
Case / Enclosure

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Chapter 2: Mechanical Installation
2.1
Introduction / Cut-out Details
The M850-LTHN MultiPower is designed for panel mounting and uses a standard 96mm x 96mm DIN case. It fits
into standard 96mm DIN openings.
Panel Cutout and Dimensions
of the M850-LTHN & M850-LTHN-RS-PO
(shown in mm)
2.2
Panel Mounting Procedure
To install the M850-LTHN:
1. Remove the 4 retaining clips from the corners of the unit.
2. Insert the M850-LTHN from the front of the panel.
3. Slide the retaining clips back onto each corner of the meter and secure it to the back of panel. Push the clips
until tight.

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2.3
Terminal Block Notes:
Terminal screws are tightened using a flat-head screwdriver. It is recommended that the terminal screws be
tightened by hand initially. When re-tightening with pneumatic screwdrivers, use a maximum torque of 0.5-1.0
Newton meters (Nm or 1.1 in.-lbs.
Force greater than the recommended tightening torque will damage the terminal block and connection.
Connections
of the M850-LTHN-RS-PO
L1, L2 and L3
current connections
Voltage, relay, RS485
and aux connections
! " # " $ " %
& '
(
)
* +
(
)
(
)
* + * +
,
- . / 0 1
2 '
3 4 . 5
6 7 6 8 6 9 :
; < = > ? @ A B C D D A E >
6 7 6 8 6 9
F G H
I J K I L
I J K M L
N O P Q R
I J K I L S T U
I J K M L S T U
V W X Y Z [ \ ] ^ _ ` a Z _ Z b c d W ` ^ Y ` b Z d W _ Z b W ` ^ ^ e f ] W W Z f _ Z [
gZ f ] W [ ` b e ] h i j Y c X Y _ k Z f ] W W Z f _ Z [ _ ] Z ` b _ l

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Chapter 3: Electrical Installation
3.1
Considerations When Installing Meters
It is recommended that wherever possible any/all equipment be installed, serviced,
repaired or replaced in de-energized conditions. If this is not possible, then installation
of the M850-LTHN must be performed by qualified personnel who follow all required
safety precautions and procedures. They must have appropriate training, experience
and/or professional certifications (where required with high voltage devices.
Appropriate personal protective safety equipment to meet all relevant standards is
required by OSHA.
•During normal operation, dangerous voltages are present on parts of the M850 including: terminals and any
connected current transformers (CTs and potential transformers (PTs , all input and output modules and
their circuits. All primary and secondary circuits should be regarded as capable of producing lethal voltages
and currents. Avoid contact with any energized parts.
•DO NOT use the M850-LTHN for primary protection or in an energy-limiting capacity. The M850-LTHN is a
power meter. DO NOT use the meter for applications where failure of the meter may cause harm or death.
DO NOT use the M850-LTHN for any application where there may be a risk of fire.
•All meter terminals must be inaccessible to personnel in normal operation.
•DO NOT apply more than the maximum voltage the meter or any attached device can withstand. Refer to
the M850-LTHN meter and/or device labels or see section 1.2 for meter specifications.
•DO NOT Hipot/dielectric test any outputs, inputs or communication terminals.
NOTE:
IF THE EQUIPMENT IS USED IN A MANNER NOT SPECIFIED BY THE MANUFACTURER,
THE PROTECTION PROVIDED BY THE EQUIPMENT MAY BE IMPAIRED.
•NOTE: THERE IS NO REQUIRED PREVENTATIVE MAINTENANCE OR INSPECTION NECESSARY FOR SAFETY.
HOWEVER, ANY REPAIR OR MAINTENANCE SHOULD BE PERFORMED BY THE FACTORY.

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3.2
Voltage Current and Power Supply Connections
All inputs are connected to the back of the unit via high contact pressure terminal blocks. The connectors
accommodate up to AWG#12 / 2.5mm wire.
m n o p q r m s t u v w x o y p z n { | } ~ y ~ o p q
APPLICABLE ELECTRIAL SYSTEMS
The M850-LTHN can be used on the following measured systems without any changes apart from wiring and
programming configurations:
Auxiliary Supply Note:
On models powered with AC auxiliary supply, the auxiliary supply can be connected in parallel with the measuring
AC input voltage, but this restricts the measuring range of the input voltage to ± 15% of nominal. If your application
has a very wide range of AC measurement, the auxiliary supply should be from a different source.
Available auxiliary voltages on the M850-LTHN are:
•100 to 440V,AC / 100 to 420V,DC (as standard
•19 to 69V,DC (optional extra
Auxiliary voltage is rated from 45 to 65Hz (AC , with a burden of <10VA (AC or DC .
If the M850-LTHN is to be used on 400Hz system, then all connections to the meter has to be 400Hz, this meter will
not work if Auxiliary supply is at 50Hz but the monitoring voltage and CT’s are working at 400Hz.
•
Single Phase
•
3 Phase, 3 Wire balanced
•
3 Phase, 4 Wire balanced
•
Single Phase, 3 Wire
•
3 Phase, 3 Wire unbalanced
•
3 Phase, 4 Wire unbalanced
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³ ´ µ
¶ · ¸ ¶ ¹
¶ · ¸ º ¹
» ¼ ½ ¾ ¿
¶ · ¸ ¶ ¹ À Á Â
¶ · ¸ º ¹ À Á Â
Ã Ä Å Æ Ç È É Ê Ë Ì Í Î Ç Ì Ç Ï Ð Ñ Ä Í Ë Æ Í Ï Ç Ñ Ä Ì Ç Ï Ä Í Ë Ë Ò Ó Ê Ä Ä Ç Ó Ì Ç È
ÔÇ Ó Ê Ä È Í Ï Ò Ê Õ Ö × Æ Ð Å Æ Ì Ø Ç Ó Ê Ä Ä Ç Ó Ì Ç È Ì Ê Ç Í Ï Ì Ù

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3.3
Terminations to Meter
CURRENT TRANSFORMER CONNECTIONS:
Internally the M850-LTHN-RS-PO is either a 5 Amp, 1 Amp or 0.333mV rated. Current transformers must be
attached externally. The current circuit is designed for connection to the secondary of external current
transformers. These transformers should conform to at least Class 1 accuracy, or preferably ANSI C57.13 or equal.
Warning: The secondary of a current transformer must never be allowed to be in an open
circuit condition when the primary is energized. In the open circuit condition high voltage may
be present. Each current transformer secondary must be short-circuited when not connected to
the meter.
VOLTAGE CONNECTIONS:
The secondary of these transformers must have the same nominal voltage as that specified on the data label on the
side of the M850-LTHN.
The M850-LTHN standard input voltage is 28-330V,AC (L-N and 48-570V,AC (L-L .
All connections must be made as shown ensuring all starts and finishes of current and voltage transformers are
connected as shown.
3.
Electrical Connection Diagram
Current Transformer and Wiring Connections
Of the M850-LTHN
Ú
Û Ü
Û Ý
Û Þ
ß à á à â
ã ä
å æ ç æ è æ é
ê ë
ì
í
Û Ü
Û Þ
Û Ý
î ï
ì
í
ì
í
î ï î ï
ð
ä
ñ ò ó ô õ
ö ë
÷ à ø ò ù
ú û ú ü ú ý þ
ÿ
ú û ú ü ú ý
! " # $ % # & ' ( $ " $ & ( # & $ " " ) * ! * #
+ * ! $ & ) ! , - . ' # / * ! * # # ! $ & # 0

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Chapter : Communications
.1
Communications Overview
The M850-LTHN-RS-PO has an internal RS485 (MODBUS communications card, as well as a pulsed output relay.
The RS485 communications card enables remote reading of up to 32 M850 units on a single 2-wire bus using the
MODBUS protocol. The RS485 MODBUS protocol allows the M850-LTHN-RS-PO to be used with PC, PLC, RTU, Data
loggers and SCADA programs.
If your system configuration requires communications with an Ethernet protocol, please use the M850-THD meter
with the Ethernet plug-in option.
.1.1
Optional USB to RS 85 Adapter
Wire in the RS485 to USB adapter following the diagram in figure 4. Please note we do not supply the RS485 to USB
coverters.
.1.2
Pulsed Output Card
A pulsed output relay is also available. Pulses are supplied via a N/O Form A relay. The pulsed output can be
assigned to W.h. or VAr.h. The relay can be set up via a sub-menu within the meter.
The pulse length of the relay can be set from a list provided in the menu (from 0 to 200 milliseconds . Pulses per
hour (PPH are modified using the decimal point positioning from the main screen.
Figure 4

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.2
Using the Communications Software
Software is available for use with the M850-LTHN-RS-PO via our website
Follow the instructions on the installation software.
.2.1
Installation of USB- 85 Device:
There are many types of USB to RS 85 convertors in the market, most of the cheaper devices do not work, so
make sure you select the correct one.
The device you have selected, will come with software or will be just plug and play, either way, follow the
instruction provided to install all drivers necessary to operate the device.
Multiview and Multilog software:
1. Download and install the files
http://www.hobut.co.uk/images/HOBUT-MViewV02.zip for MultilogV02
http://www.hobut.co.uk/images/MLogV2002.exe for MultiView.
2. When starting the software, set the COM port and communications settings to the virtual COM port that
was installed with the USB485 drivers.
3. The MultiView software should start communications with the M850 automatically if correct COM, the
standard set-up screen for MultiView is shown below:
MultiView software will assist you in logging and downloading the electrical parameters captured with the M850-
LTHN-RS-PO.
MultiLog software gives you the ability to view your voltage, current and power calculations with graphs and charts.
To access the MultiLog software, double-click the MultiLog icon that appears on your computer’s desktop (or select
it from your computer’s hard drive. Double clicking with the left mouse button on a graph will enlarge it or, if it’s
already full screen, will tile it. The right mouse button will enable a short-cut menu (below .

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The first tab on the Project set up screen allows all the details of a project to be entered. Some of this can be
displayed beneath the graphs.
The second tab is used to enter the logging parameters of a project to be entered.
The Graph Setup screen enables the user to tailor the graph screens. Logging screens can be mixed with Real Time
screens provide you with up to 12 graphs, each having 3 traces.
The time base ranges from 5 to 600 seconds in real-time mode or 5 to 600 samples (minimum 1 second in logging
mode. Up to 7200 samples can be stored.
The Y axis can be relative 0-120% to enable displaying mixed signals, for example, 5A and 2000V on the same graph
or absolute.
The Port Settings screen sets up the connection to the meter. NOTE: Ensure that the network settings are the same
as those of the meter. If the meter’s Comms Lock is disabled, successive tries to connect will result in the meter’s
network settings being changed.
The logged data can be exported as a comma separated variable file (.csv for Excel to load. Emailing the saved file is
also possible but the recipient must have a copy of MultiLog to view it.

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.3
Measurement Logging with MultiView
The measurements displayed in the Monitor/Log area of the MultiView program can be captured and saved to files.
A choice of 1 to 6 channels can be selected from the drop-down menu, ‘Measurements’. The order of the registers
can be altered to make this set up more effective. See Register Order Function if none of the Trigger Points are
enabled, all of the selected measurements are logged at the user-defined time period.
Trigger points can be set up (Over, Under and Window to provide further flexibility and can be enabled or disabled
using the associated ‘Enabled’ check box. When triggering is enabled, a further choice of whether to save only the
triggering measurements (the measurements that fall outside the trigger points or to record all the measurements
regardless of which point caused the triggering.
The files saved will be Tab Separated Variable types suitable for pasting directly into Excel or similar program.
There is no limit on the number of the files saved except for available disc space. (NOTE: this is not checked .
A file will have a base name, chosen by the user, and be limited in size to approximately 60,000 bytes.
Subsequent files will also be limited to 60,000 and have a ‘-‘ and a consecutive number attached before its
extension identifier. For example, if the file name selected for the log file is ‘SystemVoltage.log’, additional files will
be System Voltage -2.log, System Voltage -3.log etc.
NOTE: The data will always be APPENDED to the last file of the specified name if the file or sequence of files already
exists.
Logging Examples
All 6 values are logged at approx. 1 sec intervals.
No trigger points enabled.
Response Time = 300ms, Logging Period = 3, Measurements = 6
May 16 2003 13:23:39 V 1 230.0 V 2 230.0 V 3 230.0 I 1 500.0 I 2 500.0 I 3
500.0
May 16 2003 13:23:40 V 1 230.0 V 2 230.0 V 3 230.0 I 1 500.0 I 2 500.0 I 3
500.0
May 16 2003 13:23:41 V 1 230.0 V 2 230.0 V 3 230.0 I 1 500.0 I 2 500.0 I 3
500.0
The first 4 values are logged at approx. 1 sec intervals.
No trigger points enabled.
Response Time = 300ms, Logging Period = 3, Measurements = 4
May 16 2003 13:30:19 V 1 230.0 V 2 230.0 V 3 230.0 I 1 500.0
May 16 2003 13:30:20 V 1 230.0 V 2 230.0 V 3 230.0 I 1 500.0
May 16 2003 13:30:21 V 1 230.0 V 2 230.0 V 3 230.0 I 1 500.0
V1, V2 and I1 trigger points are enabled and sampled at approx. 1 sec intervals.
Response Time = 300ms, Logging Period = 3, Measurements = 4, No triggering occurred.
V1, V2 and I1 trigger points are enabled and sampled at approx. 1 sec intervals.

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Response Time = 300ms, Logging Period = 3, Measurements = 4
Triggering occurred on V1 (over and all measurements logged.
May 16 2003 13:53:41 V 1 242.0 V 2 242.0 V 3 242.0 I 1 500.0
May 16 2003 13:53:42 V 1 242.0 V 2 242.0 V 3 242.0 I 1 500.0
May 16 2003 13:53:43 V 1 242.0 V 2 242.0 V 3 242.0 I 1 500.0
Triggering occurred on V2 (under and all measurements logged.
May 16 2003 13:54:13 V 1 210.0 V 2 210.0 V 3 210.0 I 1 500.0
May 16 2003 13:54:14 V 1 210.0 V 2 210.0 V 3 210.0 I 1 500.0
May 16 2003 13:54:15 V 1 210.0 V 2 210.0 V 3 210.0 I 1 500.0
Triggering occurred on I1 (window-over and all measurements logged.
May 16 2003 13:59:40 V 1 230.0 V 2 230.0 V 3 230.0 I 1 610.0
May 16 2003 13:59:41 V 1 230.0 V 2 230.0 V 3 230.0 I 1 610.0
May 16 2003 13:59:42 V 1 230.0 V 2 230.0 V 3 230.0 I 1 610.0
Triggering occurred on I1 (window-under and all measurements logged.
May 16 2003 13:59:57 V 1 230.0 V 2 230.0 V 3 230.0 I 1 100.0
May 16 2003 13:59:58 V 1 230.0 V 2 230.0 V 3 230.0 I 1 100.0
May 16 2003 13:59:59 V 1 230.0 V 2 230.0 V 3 230.0 I 1 100.0
V1, V2 and I1 trigger points are enabled and sampled at approx. 1 sec intervals.
Response Time = 300ms, Logging Period = 3, Measurements = 4
Triggering occurred on V1 (over and only error measurements logged.
May 16 2003 14:03:55 V 1 242.0
May 16 2003 14:03:56 V 1 242.0
May 16 2003 14:03:57 V 1 242.0
Triggering occurred on V2 (under and only error measurements logged.
May 16 2003 14:04:11 V 2 210.0
May 16 2003 14:04:12 V 2 210.0
May 16 2003 14:04:13 V 2 210.0
Triggering occurred on I1 (window-over and only error measurements logged.
May 16 2003 14:04:30 I 1 610.0
May 16 2003 14:04:31 I 1 610.0
May 16 2003 14:04:32 I 1 610.0
Triggering occurred on I1 (window-under and only error measurements logged.
May 16 2003 14:04:41 I 1 100.0
May 16 2003 14:04:42 I 1 100.0
May 16 2003 14:04:43 I 1 100.0
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