frako EML 1101 User manual

Safety Instructions
Important: Read Before Commissioning
• The user must ensure that all operators are familiar with this operating manual and follow it at all
times.
• The operating manual must be read carefully before the instrument is mounted, installed and
commissioned.
• All actions taken must follow the operating manual.
• Installation and commissioning may only be carried out by appropriately qualified personnel with
due regard for all rules and regulations that are in force.
• When the instrument is connected to mains voltage, it must not be opened.
• If the instrument is visibly damaged, it must not be installed, wired up or commissioned.
• If the instrument does not work after commissioning, it must be disconnected from the mains.
• Any further laws, standards, guidelines, etc. relevant to this product must be complied with.
Additional information on EML 1101 Maximum Demand Controller
• Loads which may cause damage or danger when disconnected by EML1101 must not be
connected to the load channels.
• The responsibility for correct load settings, such that proper operation is guaranteed and no
damage or danger arises, remains 100% with the customer.

Contents PRELIMINARY User Manual EML1101
Contents
Section Page
1 Quick Start 5
1.1 Programming via Front Fascia................................................................................................5
2 Description 7
2.1 FRAKO System options S, M and L........................................................................................8
3 Installation 8
3.1 Mounting .................................................................................................................................8
3.2 Electrical Connections ............................................................................................................8
3.2.1 Power Supply Voltage ........................................................................................................8
3.2.2 Connecting Inputs...............................................................................................................9
3.2.3 Connecting Load Channels ................................................................................................9
3.2.4 Alarm Contact for Hardware Error ......................................................................................9
3.2.5 Alarm contact......................................................................................................................9
3.3 Installing the OPT-SW software........................................................................................... 10
3.3.1 Hardware requirements: .................................................................................................. 10
3.3.2 Software requirements:.................................................................................................... 10
3.3.3 Installation........................................................................................................................ 10
4 Commissioning 11
5 Response in exceptional conditions 11
5.1 Self Monitoring ..................................................................................................................... 11
5.2 Restarting............................................................................................................................. 11
5.3 Memory ................................................................................................................................ 11
6 Operation 12
6.1 Keyboard.............................................................................................................................. 12
6.2 Programming mode.............................................................................................................. 12
6.2.1 Selecting program items.................................................................................................. 12
6.2.2 Activating programming mode......................................................................................... 12
6.2.3 Setting parameters .......................................................................................................... 12
6.2.4 Accepting settings............................................................................................................ 12
6.3 Menu Structure..................................................................................................................... 13
7 Basic Settings 14
7.1 Target maximum demand P1, P2, P3 and P4 ..................................................................... 14
7.2 . Current target maximum demand P1, P2, P3 and P4.................................................... 14
7.3 . Initial value target maximum demand P1, P2, P3 and P4.............................................. 14
7.4 . Upper limit target maximum demand P1, P2, P3 and P4 .............................................. 14
7.5 Peak power P1, P2, P3 and P4 ........................................................................................... 15
7.6 Control delay ........................................................................................................................ 15
7.7 Control Application Point...................................................................................................... 15
7.8 Emergency mode activated at XX% of total sheddable load power .................................... 15
7.9 Other settings....................................................................................................................... 15
7.9.1 Measuring period ............................................................................................................. 15
7.9.2 Counter constant ( P_act1, P_act2) ............................................................................ 16
7.9.3 Current transf. ratio Ip/Is: (P_act1, Q, P_act2) ........................................................... 16
7.9.4 Voltage transf. ratio Vp/Vs: (P_act1, Q, P_act2) ........................................................ 16
7.9.5 Average over (P_act1, Q, P_act2).............................................................................. 16
7.9.6 Counter constant (Q) ....................................................................................................... 16
7.9.7 Cosphi Alarm at cosphi <XX............................................................................................ 16
7.9.8 Bus address..................................................................................................................... 16
7.9.9 Auto summer/winter time changeover ............................................................................. 16
7.9.10 Options............................................................................................................................. 16
7.9.10.1 Number of Profiles Used 16
7.9.10.2 Highest EMD Address 16
7.9.10.3 Type of profile switching 17
7.9.10.4 Active Pulse Monitoring Alarm 19
7.9.10.5 . Group 19
7.9.10.6 Units 19
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User Manual EML1101 Contents
8 Load settings 20
8.1 Load name ........................................................................................................................... 20
8.2 Priority .................................................................................................................................. 20
8.3 Power ................................................................................................................................... 21
8.4 Preference............................................................................................................................ 21
8.5 Channel Status..................................................................................................................... 21
8.6 Minimum OFF time............................................................................................................... 21
8.7 Maximum OFF time.............................................................................................................. 21
8.8 Minimum ON time ................................................................................................................ 22
8.9 . Group.............................................................................................................................. 22
8.10 Changing load settings of group channels........................................................................... 22
8.11 Output................................................................................................................................... 22
8.12 Function testing.................................................................................................................... 22
9 Printer routines 23
9.1 Printing basic settings .......................................................................................................... 23
9.2 Printing load settings............................................................................................................ 23
9.3 Power failures ...................................................................................................................... 23
9.4 Errors.................................................................................................................................... 23
9.4.1 Error list............................................................................................................................ 24
9.4.2 Resetting error counters .................................................................................................. 24
9.5 Printing present day's power curve...................................................................................... 24
9.6 Printing previous day's power curve .................................................................................... 24
9.7 Power maxima of the last 50 days ....................................................................................... 25
9.8 Power maxima of the last 48 months................................................................................... 25
9.9 Event list............................................................................................................................... 25
9.10 Deleting printer queue.......................................................................................................... 26
10 Add-on stations 26
10.1 Activating/deactivating stations............................................................................................ 26
10.2 Displaying stations ............................................................................................................... 26
10.3 Virtual add-on units .............................................................................................................. 27
10.4 Activating virtual EMD .......................................................................................................... 27
11 External synchronisation 27
12 Setting time 28
13 Counters 28
14 Write protect 28
15 Info device 28
16 Technical Data 29
17 Troubleshooting 30
17.1 Checking programmed values ............................................................................................. 30
17.2 Control on the instrument..................................................................................................... 30
17.3 Printout from a directly connected printer ............................................................................ 30
17.4 Checking the system when running..................................................................................... 30
17.4.1 Standard display .............................................................................................................. 30
17.4.2 Display of switching channels.......................................................................................... 30
17.5 Sources of error ................................................................................................................... 31
18 Application instructions 33
18.1 Bus cable longer than 1 km ................................................................................................. 33
18.2 Shielding .............................................................................................................................. 33
18.3 Target Maximum Demand ................................................................................................... 33
18.4 Operating OPT-SW via modem ........................................................................................... 34
18.5 Technical terms/Glossary .................................................................................................... 34
19 Annex 36
19.1 Instrument software.............................................................................................................. 36
19.1.1 EML software update....................................................................................................... 36
19.1.2 Update preparation .......................................................................................................... 36
19.2 Table of settings................................................................................................................... 40
19.3 Form for Basic Settings........................................................................................................ 42
19.4 Form for load settings .......................................................................................................... 45
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Quick Start PRELIMINARY User Manual EML1101
19.5 Terminal assignments.......................................................................................................... 46
19.6 Connection diagram............................................................................................................. 47
19.7 Dimensions .......................................................................................................................... 48
20 Appendix 49
20.1 Glossary of Terms................................................................................................................ 49
20.2 Preference............................................................................................................................ 50
20.2.1 Power preference ............................................................................................................ 50
20.2.2 Time preference............................................................................................................... 50
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User Manual EML1101 Quick Start
1 Quick Start
The instrument is commissioned as follows:
a) Copy and fill out Form for Basic Settings (page 42)and Form for Load Settings (page 45)
before commissioning.
b) Remove stoppers from the PG cable glands and connect the EML 1101 as shown in Figure 1 on
page 47. Please observe the directions in chapter 3 page 8.
c) Switch on power supply. The EML 1101 then performs a self-test.
d) Check if the inputs are functioning correctly:
− Active pulse input: The status display for Active pulse blinks.
− Time pulse input: The remaining time is reset and the next measuring period starts when a time
pulse is received. ‘No time pulse’ should not appear in the third line at the end of a measuring
period.
e) Carry out the settings procedure. This means programming of basic settings and load settings
using buttons on the front fascia or over a PC using OPT-SW software supplied. The second
option makes the configuration easier to understand. For this reason it is recommended to use the
PC software when installing for the first time. Refer to online help in OPT-SW if you require further
information.
Installation:
Start the program OPT-SW under Windows(e.g. Win 95 with the ‘Start’ button and the
menu item ‘run’, then enter >A:\setup.exe< A:\SETUP in the dialog box).
1.1 Programming via Front Fascia
1) Fascia keys:
- Use ‘arrow’ keys to choose menu items/Numbers.
- ‘CR’ key confirms menu item choice/Changes to next digit.
- ‘Menu’ key changes one menu level back/Accept choices.
2) Choose the menu item Basic settings.
3) The sub-menu item Target maximum demand P1 is displayed.
Select this by pressing CR button.
Target maximum demand P1:
6500.0kW
To prevent unauthorised use or accidental changes to
the instrument, a prompt is given for ID number. This
is shown only if no data has been entered for more
than 1 hour. The last four characters of the serial
number are to be entered as ID number. These are
given on the label on the top face of the terminal
compartment. Use the ‘arrow’ keys to choose numbers. Change to next number with the ‘CR’ key.
When ID is entered (e.g. 0631), press ‘Menu key’. If the ID is correct an underscore appears in the
display.
1) Enter values for target maximum demand and peak power according to Form for Basic
Settings.
2) Peak power is the maximum permissible active power. Enter a peak power value that is high
enough to prevent short high active power from causing a shut off.
3) To set measuring period, select menu item Basic settings | Other settings | Measuring period.
Measuring periods of 10, 15, 30 or 60 minutes can be chosen using cursor buttons.
4) List of settings in this sub-menu:
− Measuring period
− Maximum target demand P1,P2,P3, and P4
− current target maximum demand P1,P2,P3, and P4
− Current transf. ratio Ip/Is: (P_act1, Q, P_act2)
− Voltage transf. ratio Vp/Vs: (P_act1 ,Q, P_act2)
− Counter constant (P_act1, P_act2)
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Description PRELIMINARY User Manual EML1101
− Counter constant (Q)
− Average over (P_act1, Q, P_act2)
− Cosphi alarm when cosphi < XX%
− Bus address
− Auto summer/winter time changeover
Note: Settings made are immediately adopted by control system. Please note that when a new
Target maximum is selected, this value comes in effect immediately.
Load settings listed below can be set individually for every load channel and for every profile.
Load settings Values Description
Power 0 – 6500.0 Value in kW or MW
0 Load is always switched on
1 – 3 Load is only included in control system during
emergency mode
4 – 98 Load is included in control system
Priority
99 Load is always switched off
Channel status Always ON
Always OFF
Controlled
Selected state for all profiles
Output status NC
NO
Inverting of the contact state ON/OFF
Minimum OFF time 0 – 999:59 Value in minutes:seconds
Maximum OFF time 0 – 999:59 Value in minutes:seconds
Minimum ON time 0 – 999:59 Value in minutes:seconds
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User Manual EML1101 Description
2 Description
Customers with a power consumption above typical values of about 30 kW are charged not only
according to their consumption for energy, but also according to the maximum power they draw.
In this context the term consumption refers to an average that is determined over a measuring period.
Usually the average is determined over a period of 10, 15, 30 or 60 minutes. The beginning and the
end of a measuring period are sent to the EML1101 by the energy supplier via pulse output on the
counter.
If a measuring period of 15 minutes is defined, the energy supplier subdivides every day into 24 x 4 =
96 measuring periods. At the beginning of each measuring period, an energy meter is set to zero.
The amount of consumed energy at the end of each measuring period is divided by ¼ of an hour and
thus becomes the mean power drawn during that particular measuring period.
There are various methods of charging maximum demand, but they all use a monthly basis of
calculation. In a 30 day month there are 96 x 30 = 2880 maximums, the highest of these mean power
values is charged by the utility. At the end of each month, maximum demand in kW is charged at a
certain rate of $ x / kW.
Example: Monthly maximum demand: 110 kW
Rate: $ 8.00 per kW per month
Maximum demand charge: $ 880.00
A very frequent example for charging maximum demand on a yearly basis: The 3 highest values over
a 12 month period are determined, These 3 values are then averaged and the result is charged with,
for example, $ 102.00/kW/year.
The relay outputs of the EML 1101 can be used to switch loads off. The EML 1101 has 4 switching
channels and an emergency channel for shedding loads. Extension stations with 8 switching channels
each can be connected over a 2 wire bus connection .
There are further outputs on the EML 1101 which will, however, not be dealt with in this introductory
chapter.
The EML 1101 is supplied with all relevant data for automatic maximum demand control over the
inputs. A trend is calculated with the current power used and the remaining time in the measuring
period. If this trend is higher than the set target maximum demand, channels are switched off, in as
much as their min/max times are maintained. If a trend is lower than the set target maximum demand,
deactivated channels with appropriate power demand can be switched on again
Time pulse rate: 1 per measuring period.
kWh pulse rate: dependent on counter constants, current and voltage
transformer ratios
Example: 15 Imp/kWh
W_max = P_max/T
Prognosis at t = t1: No need of action.
Prognosis at t = t2: Need of action: Loads are switched off until the
trend falls below W_max.
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Installation PRELIMINARY User Manual EML1101
2.1 FRAKO System options S, M and L
The EML 1101 is available in the following system options:
EML 1101
S4/S12/S20
- Bus prepared
- max. 2 EMD ( 4+2•8 = 20 channels)
- Output inversion
EML 1101 Additionally:
- FRAKO Starkstrombusavailable
- + 2 EMD (Max. 4)
- 3 Active pulse inputs with summation
- Target maximum demand
adjustment
EML 1101
Additionally:
- + 6 EMD (Max. 10)
- Grouping
Upgrades to higher system options are carried out with a PC is not necessarily require the assistance
of a service technician.
For ease of understanding the FRAKO system options are differentiated in the text as follows:
Function as of FRAKO system option:
Function as of FRAKO system option
3 Installation
3.1 Mounting
The EML 1101 is vertically screw mounted.
3.2 Electrical Connections
All cable connections are connected with plug-in terminal blocks. Connections are as shown in
Figure 1 Connection diagram. page 47. Stoppers should be left in PG cable glands which are not in
use.
3.2.1 Power Supply Voltage
Power supply voltage should be 230 VAC, 50/60 Hz. The device is protected by an internal fine-wire
fuse ( 250 mA slow-blow ).
Important:
The connections for power supply must be externally protected by a 2 A semi-time lag
fuse. When working on EML 1101, the unit must be switched off. If the alarm contact
is also used to signify power failures, then the alarm circuit must be protected
separately otherwise any failure of the 2 A fuse cannot be monitored.
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User Manual EML1101 Installation
3.2.2 Connecting Inputs
The inputs for active pulse, time pulse and profile switching complies to S0 definition. The power
supply required is provided by the inputs. Both potential free contacts and electronic contacts can be
connected.
There are two inputs for profile switching, thus allowing 4 profiles to be selected.
Status of profile input 1 Status of profile input 2 Selected profile Counter
open open P1 1
close open P2 2
open close P3 1
close close P4 2
As can be seen from the table above, one of the 2 counters is chosen simultaneously with profile input
1. Profile input 2 does not influence the counter.
Caution:
No external voltages are to be applied to contacts 7 to 14 as this can destroy the input
circuit.
Important:
When working on EML 1101, ensure that the unit is disconnected from mains. Although
the EML 1101 is disconnected from mains, the circuits leading to switch contacts may
still be connected to power voltage.
3.2.3 Connecting Load Channels
EML 1101 load channels consist of switching contacts which consist of a normally open (NO) and
normally closed(NC) contact.
The NC part of the switching contacts takes on the following states in the listed operation conditions of
EML.
Load on: NC of the relay is closed
Load off: NC of the relay is open.
No power supply: NC of the relay is closed
Every channel of the add-on stations of the EMD1101 have only NC contacts. These can be used
either as NO or NC contact in the load settings. The position of the relay in emergency/power off can
be set with a DIP switch row on the EMD.
3.2.4 Alarm Contact for Hardware Error
The alarm contact for hardware error is a potential-free contact. The relay is open in normal operation
and energises if the processor of EML 1101 fails.
Important:
The switching and alarm contacts may only have a maximum rating of 250 V / 4 A.
3.2.5 Alarm contact
The contact is a potential free switching contact. The relay reacts when one of the following errors
occur:
- Target maximum demand exceeded
- Peak power exceeded
- Cosphi exceeded (too small)
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Commissioning PRELIMINARY User Manual EML1101
- EMD error/add-on bus error
- FRAKO Starkstrombusdefect
- No time pulse
- No pulse in input 1 (only with activated active pulse control)
- No pulse in input 2 (only with activated active pulse control)
- No pulse in input 3 (only with activated active pulse control)
- Mains power off
- Error in clock component
- Error writing to EEPROM
The relay remains in this condition until the error has been corrected. If there is an error, contact 29/30
is closed.
3.3 Installing the OPT-SW software
3.3.1 Hardware requirements:
• IBM compatible computer with CPU 80386/33MHz or higher
• 4 MB RAM
• 3½" 1.44 MB floppy disk drive
• Hard disk with at least 40 MB
• Serial communication ports COM1 and COM2 or COM 1 and PS2
• VGA graphics card and mouse
• Modem (optional)
3.3.2 Software requirements:
• Windows 98/NT/2000/XP
• Basic knowledge of Windows
3.3.3 Installation
 Select File | Run in Program Manager
Windows 95/98/NT
 Press Start button on the bottom left of the screen
 Select Run
 Enter A:\SETUP to start installation
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