SOLAR controls WATTrouter Mx series User manual

WATTrouter Mx - user manual
How to fit and setup the device
Page 1 from 82
WATTROUTER MX - USER MANUAL
FOR MODELS:
WATTROUTER MX (WRMX 01/08/17 AND WT 02/10)
WATTROUTER MX 100A (WRMX 01/08/17 A WT 03/11)
HOW TO FIT AND SETUP THE DEVICE
Document version: 1. 1
Last revision: 10. 9. 2018
Company: SOLAR controls s.r.o.

WATTrouter Mx - user manual
How to fit and setup the device
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TABLE OF CONTENTS
General information................................................................................................................................................ 4
Description of basic function .................................................................................................................................. 5
Packaging contents ................................................................................................................................................. 7
Safety warning ........................................................................................................................................................ 8
Fitting the device..................................................................................................................................................... 9
Inserting the SC-Gateway module .................................................................................................................... 19
Device configuration ............................................................................................................................................. 20
USB driver installation....................................................................................................................................... 20
WATTconfig Mx control software installation .................................................................................................. 22
Setting up main function................................................................................................................................... 23
Setting up CombiWATT mode ........................................................................................................................... 26
Setting up time schedules ................................................................................................................................. 27
ANDI input configuration .................................................................................................................................. 27
Wireless comunication settings ........................................................................................................................ 27
Finishing the configuration ............................................................................................................................... 28
Description of WATTconfig Mx items ................................................................................................................... 29
Main window .................................................................................................................................................... 29
Measured parameters and statuses ............................................................................................................. 30
Input settings tab .......................................................................................................................................... 33
Output settings tab ....................................................................................................................................... 35
Time schedules tab ....................................................................................................................................... 40
Other settings tab ......................................................................................................................................... 42
Statistics tab .................................................................................................................................................. 46
Log tab........................................................................................................................................................... 48
Options and buttons ..................................................................................................................................... 49
USB/COM driver configuration window............................................................................................................ 50
LAN/UDP driver configuration window............................................................................................................. 50
LED statuses .......................................................................................................................................................... 52
Configuration examples ........................................................................................................................................ 53
Example No. 1 –one load only.......................................................................................................................... 53
Example No. 2 –6 loads, control mode = sum of all phases ............................................................................. 55
Example No. 3 –7 loads, control mode = each phase independently .............................................................. 57
Example No. 4 –5 loads, control mode = each phase independently .............................................................. 59

WATTrouter Mx - user manual
How to fit and setup the device
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Ethernet network configuration ........................................................................................................................... 61
Local network connection settings ................................................................................................................... 61
Setting up Internet access................................................................................................................................. 62
Description of web interface and XML communication........................................................................................ 63
Troubleshooting .................................................................................................................................................... 72
Maintenance and repairs ...................................................................................................................................... 78
Technical specifications......................................................................................................................................... 79
Recycling ............................................................................................................................................................... 81
Declaration of conformity ..................................................................................................................................... 82

WATTrouter Mx - user manual
How to fit and setup the device
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GENERAL INFORMATION
WATTrouter Mx is a programmable controller to optimize self-consumption of energy produced by
photovoltaic or wind power plant (hereinafter referred to as PV-plant). It is a smart home energy management
system. After correct installation and configuration, the controller perfectly optimizes self-consumption of
energy produced by your PV-plant. WATTrouter Mx consists of a current sensing module and the regulator
itself.
WATTrouter Mx offers the following functionalities:
Three-phase indirect current measurement.
Single phase detection of voltage necessary to determine the power direction in phase L1, for other
phases it is determined by software.
Evaluation of active power outputs in individual phases, necessary to determine the surplus of
produced electric power.
Regulation based on the sum of power outputs (summary surplus) from all three phases or based on
surplus in each phase.
Switching for up to 8 outputs (2 relays and 6 external solid state relays SSR) based on configured
priorities.
Optimal use of surplus energy produced by PV-plant on SSR outputs through the application of
proportional synchronous regulation of resistive loads, compliant to European standards EN 61000-3-2
and EN 61000-3-3. This regulation modulates connected load's power exactly according to the
available surplus energy.
Very short average dynamic response of the controller (up to 10 s)
Optional CombiWATT function used for switching loads under a combined mode where energy is
taken both from PV-plant and public grid (especially suitable for water heating and also for swimming
pool filtering system).
Input for low tariff signal (nightly low price electricity) for CombiWATT. This is for households where
double tariff rates will apply.
4 multi-purpose ANDI inputs for connection of external current transformers, impulse outputs of
external energy meters, and analog temperature sensors of type NTC or PT1000.
DQ input to connect up to 4 digital temperature sensors of type DS18x20.
Separated current sensing module and regulator for easy installation into existing household wiring.
WATTconfig software designed for Microsoft Windows, Linux and MAC OS X, provides comfortable
controller configuration and monitoring via USB, Ethernet or RS485 interfaces.
Integrated web interface allows comfortable controller configuration and monitoring using regular
Internet browser.
Real-time module backed with a lithium battery for advanced management of outputs and
CombiWATT function.
Daily, weekly, monthly and annual statistics.
Integrated MicroSD card.
Firmware update.

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How to fit and setup the device
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DESCRIPTION OF BASIC FUNCTION
The current sensing module measures electric current in real time and on all phases. The regulator evaluates
the measured electric currents and if it determines the available surplus energy produced by the PV-plant, it
will switch on connected loads according to adjustable priorities, while constantly trying to maintain zero
energy flow through the current sensing module, the so called "virtual zero" (the sum of active power outputs
on all three phases = 0) or optionally, on each phase separately, so called "phase zero".
Switching according to priorities is done in the following way:
By default (during night), all loads are turned off. If surplus energy generated by PV-plant is determined in the
morning, the output with the first (highest) priority is switched on.
The switching time is different according to selected output function.
SSR/PWM outputs (proportional outputs) are switched on almost immediately after surplus energy is
detected and the controller is gradually (synchronous control or PWM modulation) maintaining
"virtual zero" or "phase zero", according to the control settings.
Relay outputs are switched on only if the surplus energy exceeds the preset load‘s nominal power.
Alternatively, relay outputs may be operated in "prepend" mode if there is sufficient power at any
proportional output with nearest higher priority. This allows for maximum utilization of the produced
surplus power even for relay outputs - refer to the "Prepend before SSRs" function.
When load with 1st priority is switched on (for proportional output it means switching on the maximum
power), the system waits until the power output of PV-plant increases again (beginning of dawn). If electric
production is determined even when this load is switched on, load with second priority in the same mode is
switched on as well.
If the power output of PV-plant is still increasing, additional connected loads are switched on in the same
mode.
If the power output of the PV-plant decreases, or if another load - not connected to the WATTrouter device is
switched on, the switched (active) outputs are disconnected - again according to preset priorities but in reverse
order (the load with lower priority is disconnected first).
For relay outputs there may be set a minimum switching time. If, simultaneously with a relay output the
proportional output with higher priority is switched on, and the available surplus energy is reduced, then this
proportional output will reduce the power output of the of the load (even down to zero) in order to maintain
virtual zero or phase zero on the current sensing module, if possible.
Except for the situation specified in the paragraph above, the controller never violates the established
priorities.
The above specified principle applies only to standard connection of the current sensing module, connected
right behind the facility’s main energy meter, so the WATTrouter device uses only the actual PV-plant surpluses
(recommended settings). However, WATTrouter controller is versatile device and can be connected according
to your needs. For example, you can place the current sensing module just next to the PV inverter and then you
can maintain the virtual or phase zero on that line.
The above specified basic control mode may be combined with another mode of output switching, provided
that low tariff signal (double tariff rate) is available (CombiWATT mode), or with switching based on preset time
conditions (time schedules).

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This device is not designed for precise active power measurement (it is not a replacement for a
wattmeter or electricity meter). Active power is measured with sufficient precision in order to
maintain all control functions.

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How to fit and setup the device
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PACKAGING CONTENTS
Contents of packaging:
1 WATTrouter Mx regulator
1 WATTrouter Mx current sensing module
1 USB cable
1 short manual with links to this manual, software and firmware updates.

WATTrouter Mx - user manual
How to fit and setup the device
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SAFETY WARNING
When you receive your package, inspect the packaging unit for damages. After opening
your package, inspect the regulator and the current sensing module for damages. Do not fit
the regulator or the current sensing module if you see signs of mechanical damages!
Always have the regulator and the current sensing module fitted by a person with the
necessary electrical certificate and qualifications. It is necessary that you read this manual
thoroughly and observe all safety warnings and requirements specified herein.
The regulator and the current sensing module must be fitted in a dry room without
excessive dust level. The room must be protected from direct sunlight and the ambient
temperature must be maintained within the range mentioned in chapter Technical
specifications. Do not place the regulator or other electronic components of this system
near flammable objects!
When power SSRs are connected to SSR outputs, it is absolutely necessary to fit these into a
distribution box equipped with adequate heat dissipation system (with ventilation grid or
vents)!
Make sure that unauthorized persons, mainly children, cannot access the location where
the controller is fitted. There is a serious risk of electric shock!
Only connect outputs of the controller to electrical loads which have been designed for this
operation mode and for which the manufacturer does not explicitly prohibit connection via
switching element!
The manufacturer is not liable for any damages occurred due to improper fitting or
operation of the device! The owner is fully responsible for operation of the entire system.

WATTrouter Mx - user manual
How to fit and setup the device
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FITTING THE DEVICE
WATTrouter Mx regulator may be fitted in a regular electrical distribution box onto a 35 mm DIN rail or
attached to a wall using 2 screws with round or countersink head and with diameter up to 6 mm.
WATTrouter Mx current sensing module may be fitted in a regular electrical distribution box onto a 35 mm DIN
rail.
Measuring inputs of the current sensing module may be connected as single, double, or triple-phase
connections.
The recommended maximum distance of the current sensing module and the regulator is 2 meters. Bigger
distance is acceptable, but it will slightly affect the measuring accuracy.
If CYKY or other thick and hard cables cannot pass through current transformers easily, use flexible cables to
extend the existing connections. When fitting the current sensing module do not press hard on it. You may
damage the module.
Tip: Individual phase wires may pass through the current sensing module from either direction. The direction of
currents may be configured in the control software.
To connect power supply to the regulator (L1 and N) use wires with a minimum cross-section of 0.5 mm2, for
example CYKY 1.5.
To connect loads to the relay outputs use wires with adequate cross-section corresponding with the power
ratings of the connected loads.
To connect loads to the power SSRs again use wires with adequate cross-section corresponding with the power
ratings of the connected loads.
To interconnect the current sensing module and regulator (inputs Y and ILx) use 4-wire cable with cross-section
from 0.5 to 1.5 mm2. If these wires are longer than 2m or are placed in a cable tray together with other power
cables/wires, we recommend using a shielded cable. Similar recommendation applies for connecting external
current transformers to the ANDI inputs.
To interconnect power SSR control inputs and/or 0-10VDC control signals with SSR outputs use wires with
cross-section from 0.5 to 1.5 mm2. If these wires are longer than 2m or are placed in a cable tray together with
other power cables/wires, we recommend using a shielded cable.
To interconnect S0 impulse signals from external energy meters with ANDI inputs use 2-wire cable with cross-
section from 0.5 to 1.5 mm2, connected between GND and respective ANDI terminal. If these wires are longer
than 2m or are placed in a cable tray together with other power cables/wires, we recommend using a shielded
cable.
To interconnect analog temperature sensors with ANDI inputs use 2-wire shielded cable with cross-section
from 0.5 to 1 mm2, connected between GND and respective ANDI terminal.
To interconnect digital temperature sensors of type DS18x20 to DQ bus use 3-wire shielded cable with cross-
section from 0.5 to 1 mm2, connected between GND (ground), +5V (power supply) and DQ terminal (data bus).
When connecting other sensors to the DQ data bus always connect shielding. Total length of the bus including
all branches should not exceed 50m.
Connect shielding of all shielded cables to the GND terminal as close as possible to the regulator.
If you use shielded cables then use for each type of signal a standalone shielded cable, i.e. do not mix signals
from analog and digital sensors in one cable, especially when making the cables longer. There might be
crosstalk which will decrease measurement accuracy.

WATTrouter Mx - user manual
How to fit and setup the device
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Figure 1: Connector and LED description (top view).
Regulator terminals - description:
Top left terminal block (this only accepts voltage from public grid!):
L1 –regulator power supply and voltage detection L1, 230VAC/50Hz (must always be connected)
N –neutral wire (must always be connected)
R1_1 –relay output 1 –terminal 1
R1_2 –relay output 1 –terminal 2
R2_1 –relay output 2 –terminal 1
R2_2 –relay output 2 –terminal 2
Top right pluggable terminal block:
GND –signal ground
S1-–external output for SSR 1 –negative electrode (open collector)
S2-–external output for SSR 2 –negative electrode (open collector)
S3-–external output for SSR 3 –negative electrode (open collector)
S4-–external output for SSR 4 –negative electrode (Sallen-Key filter)
S5-–external output for SSR 5 –negative electrode (Sallen-Key filter)
S6-–external output for SSR 6 –negative electrode (Sallen-Key filter)
+12V –external SSR outputs –common positive electrode (+12V with respect to GND)
+5V –power supply for digital temperature sensors DS18x20 (+5V with respect to GND)
Left bottom communication connectors:
USB –USB interface connector (USB B)
LAN –Ethernet interface connector (RJ45, 10/100 Mbit/s)
Left bottom pluggable terminal block:
RS485 A –non-inverting RS485 line
RS485 B –inverting RS485 line
DQ –data bus for digital temperature sensors of type DS18x20
Right bottom pluggable terminal block:
Y –common wire coming from the current sensing module (must always be connected)
IL1 –electric current measuring input L1 from the current sensing module (must always be connected)
IL2 –electric current measuring input L2 from the current sensing module
IL3 –electric current measuring input L3 from the current sensing module
ANDI1 –multi-purpose ANDI 1 input
ANDI2 –multi-purpose ANDI 2 input
ANDI3 –multi-purpose ANDI 3 input
ANDI4 –multi-purpose ANDI 4 input
LT –low tariff signal detection (0V or +5V)
LED description:
PWR –regulator power on light (green)

WATTrouter Mx - user manual
How to fit and setup the device
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USB –communication light - USB interface (yellow)
ERR –error status light (red)
S1–external output for SSR 1 - activity indication light
S2–external output for SSR 2 - activity indication light
S3–external output for SSR 3 - activity indication light
S4–external output for SSR 4 - activity indication light
S5–external output for SSR 5 - activity indication light
S6–external output for SSR 6 - activity indication light
R1–relay output No. 1 - activity indication light
R2–relay output No. 2 - activity indication light
RJ45 connector –Ethernet connection indication light (left yellow LED –carrier frequency, right green
LED - connection speed)
Wireless PWR –SC-Gateway power LED (optional accessories)
Wireless LINK –SC-Gateway link LED (optional accessories)
Other connectors:
Micro SD –slot with integrated MicroSD card
Figure 2: Connection terminals of current sensing module WT 02/10 (for WATTrouter Mx ) and WT 03/11 for WATTrouter Mx 100A. The
GND terminal of the WT 03/11 module must be connected to the Y terminal of the controller.
Current sensing module terminal description (the terminals are described directly on the motherboard of the
Mx 100A module):
Y–common wire (must always be connected), on the WT 03/11 module it is marked as GND.
I_L1 –current measuring output L1 (must be always connected)
I_L2 –current measuring output L2
I_L3 –current measuring output L3
Connect the controller according to sample connection diagrams shown on figures below. If you observe basic
principles, connections may be combined in various ways. You may connect any number of loads to any
outputs; in certain cases you may remove certain phase cable from the measuring, etc.
GND I_L1 I_L2 I_L3

WATTrouter Mx - user manual
How to fit and setup the device
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Figure 3: Three-phase connection with low tariff signal circuit for CombiWATT mode, or time schedules. Current sensing module is
placed at the facility’s supply cable coming from the distribution box where main energy meter is located. The connected loads use only
real surpluses produced by PV-plant. 5 loads are connected, 3 of them through the recommended SSRs, RGS1A series manufactured by
Carlo Gavazzi.
Figure 4: Single-phase connection with optional low tariff signal circuit for CombiWATT mode, or time schedules. Current sensing
module is placed at the facility’s supply cable coming from the distribution box where main energy meter is located. The connected
loads use only real surpluses produced by PV-plant. Only 1 load is connected through the recommended SSR, RGS1A series
manufactured by Carlo Gavazzi.
L1
Current sensing module
N
Regulator
IL1 IL2 IL3 B DQ
Y
LT
ANDI3 ANDI4 ANDI2
R2_1 R2_2
L1
N
ANDI1
R1_1 R1_2
IL3 IL2 IL1
Y
Load 1
(only resistive)
House wiring
+ PV plant
PE
PE
Public grid connection point (main energy meter)
Wire goes through
current transformer
Relay 230VAC
LT (low tariff signal)
I > I >
Load 2
(only resistive)
M
1
Load 4
(e.g. motor*)
M
1
Load 5
(e.g. motor*)
Load 3
(only resistive)
I >
B6A
USB
LAN
micro
SD
GND
S2- S1- S4- S3- S6- S5-
+12V
+5V
A
RS485
*) Always use separated contactor
for motors and loads with cos(φ)<>1!
L2
L3
L1
N
L2
L3
L1 T1
A1+
A2-
RGS1A60D..
L1 T1
A1+
A2-
RGS1A60D..
L1 T1
A1+
A2-
RGS1A60D..
L1
Current sensing module
N
Regulator
IL1 IL2 IL3 B DQ
Y
LT
ANDI3 ANDI4 ANDI2
R2_1 R2_2
L1
N
ANDI1
R1_1 R1_2
IL3 IL2 IL1
Y
Load 1
(only resistive)
House wiring
+ PV plant
PE
PE
Public grid connection point (main energy meter)
Wire goes through
current transformer
Relay 230VAC
LT (low tariff signal)
I >
B6A
USB
LAN
micro
SD
GND
S2- S1- S4- S3- S6- S5-
+12V
+5V
A
RS485
L2
L3
L1
N
L2
L3
L1 T1
A1+
A2-
RGS1A60D..

WATTrouter Mx - user manual
How to fit and setup the device
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Figure 5: Three-phase connection with 2 current sensing modules and with low tariff signal circuit for CombiWATT mode, or time
schedules. This connection is necessary if the PV-plant output is connected directly to a sealed distribution box, accessible only to the
electricity provider. This may be the case for PV-plants made originally only for feed-in tariff, without self-consumption possibility.
Current sensing module 1 is connected to the household wiring branch; current sensing module 2 is connected to PV-plant branch. The
accuracy of measurement is reduced down to ± 10% in this connection because of the finite impedance of current transformer
secondary winding. Caution: Current flow through current sensing modules must always be subtracted in this connection (marked with
arrows on the picture). The same phase sequence must be observed in the regulator and in both current sensing modules!
Figure 6: Three-phase connection of WATTrouter Mx with 2 regulators and with low tariff signal circuit for CombiWATT mode, or time
schedules. Using this connection you may extend the number of outputs up to 16. Current sensing module is placed at the facility’s
supply cable coming from the distribution box where main energy meter is located. Connected loads use only the actual surpluses
L1
Current sensing module 1
N
Regulator
IL1 IL2 IL3 B DQ
Y
LT
ANDI3 ANDI4 ANDI2
R2_1 R2_2
L1
N
ANDI1
R1_1 R1_2
IL3 IL2 IL1
Y
Load 1
(only resistive)
House
wiring
PE
PE
Wire goes through
current transformer
Relay 230VAC
LT (low tariff signal)
I > I >
Load 2
(only resistive)
M
1
Load 4
(eg. motor*)
M
1
Load 5
(eg. motor*)
Load 3
(only resistive)
I >
B6A
USB
LAN
micro
SD
GND
S2- S1- S4- S3- S6- S5-
+12V
+5V
A
RS485
*) Always use separated contactor
for motors and loads with cos(φ)<>1!
L2
L3
L1
N
L2
L3
L1 T1
A1+
A2-
RGS1A60D..
L1 T1
A1+
A2-
RGS1A60D..
L1 T1
A1+
A2-
RGS1A60D..
Public grid
connection point
(main energy meter)
Only accessible to
provider, PV plant
connected inside.
L1
L2
L3
N
Current flow
Current sensing module 2
IL3
IL2
IL1
Y
L1
N
PV plant
PE
L2
L3
Current flow
Wire goes through
current transformer
L1
Current sensing module
N
Regulator L1
IL1 IL2 IL3 B DQ
Y
LT
ANDI3 ANDI4 ANDI2
R2_1 R2_2
L1
N
ANDI1
R1_1 R1_2
IL3 IL2 IL1
Y
Load 1 (L1)
(only resistive)
House wiring
+ PV plant
PE
PE
Public grid connection point (main energy meter)
Wire goes through
current transformer
Relay 230VAC
LT (low tariff signal)
I > I >
Load 2 (L2)
(only resistive)
M
1
Load 4 (L1)
(eg. motor*)
M
1
Load 5 (L2)
(eg. motor*)
Load 3 (L3)
(only resistive)
I >
B6A
USB
LAN
micro
SD
GND
S2- S1- S4- S3- S6- S5-
+12V
+5V
A
RS485
*) Always use separated contactor
for motors and loads with cos(φ)<>1!
L2
L3
L1
N
L2
L3
L1 T1
A1+
A2-
RGS1A60D..
L1 T1
A1+
A2-
RGS1A60D..
L1 T1
A1+
A2-
RGS1A60D..
Regulator L2+L3
IL1 IL2 IL3 B DQ
Y
LT
ANDI3 ANDI4 ANDI2
R2_1 R2_2
L1
N
ANDI1
R1_1 R1_2
USB
LAN
micro
SD
GND
S2- S1- S4- S3- S6- S5-
+12V
+5V
A
RS485
I >
B6A

WATTrouter Mx - user manual
How to fit and setup the device
Page 14 from 82
produced by PV-plant. To make things simple, again only 5 loads are connected, but you may use all 16 outputs. Similarly, you may also
connect 3 regulators to 1 current sensing module. In such scenario, each regulator works on one phase and you will get 24 outputs.
Figure 7: Increasing of current measurement range of the device for facilities where main circuit breaker is larger than 3x40A.
Transformers 200/5A, or even 400/5A may be used, based on the main circuit breaker value. Secondary coil of current transformers is
shorted through the current sensing module (the secondary circuit passes through measuring transformers in the current sensing
module). Additional increase of current measurement range may be done if you take the secondary circuit of the current transformer
and make several turns through the measuring transformer in the current sensing module (for transformers 200/5A, the best option is
to make 4 turns in order to reach optimum transfer ratio 200/20A). For this purpose we recommend using lines, which are not overrated
for the nominal secondary current, just to be able to make more turns through the hole of measuring transformer. When connected
through external current transformers, the conversion ratio must be set correctly in the control software - see the item Conversion ratio
of external CT‘s in the main window of the WATTconfig software.
L1
Current sensing module
N
Regulator
IL1 IL2 IL3 B DQ
Y
LT
ANDI3 ANDI4 ANDI2
R2_1 R2_2
L1
N
ANDI1
R1_1 R1_2
IL3 IL2 IL1
Y
House wiring
+ PV plant
PE
PE
Public grid connection point (main energy meter)
Wire goes through
current transformer
LT (low tariff signal)
I >
B6A
USB
LAN
micro
SD
GND
S2- S1- S4- S3- S6- S5-
+12V
+5V
A
RS485
L2
L3
L1
N
L2
L3
TR
200/5A
Improving range for
current transformer to 200/20A
(make 4 turns through our CT)
TR2
200/5A
TR1
200/5A
TR3
200/5A
L1
Current sensing module
N
Regulator
IL1 IL2 IL3 B DQ
Y
LT
ANDI3 ANDI4 ANDI2
R2_1 R2_2
L1
N
ANDI1
R1_1 R1_2
IL3 IL2 IL1
Y
Load 1
(only resistive)
House wiring
+ PV plant
PE
PE
Public grid connection point (main energy meter)
Wire goes through
current transformer
LT (low tariff signal)
I >
B6A
USB
LAN
micro
SD
GND
S2- S1- S4- S3- S6- S5-
+12V
+5V
A
RS485
L2
L3
L1
N
L2
L3
L1 T1
A1+
A2-
RGS1A60D..
TR
Wire goes through
current transformer

WATTrouter Mx - user manual
How to fit and setup the device
Page 15 from 82
Figure 8: Connection of an external current transformer (marked as TR, this may be another current sensing module or other compatible
current transformer) to measure the current flow through the appliance. The secondary transformer circuit is connected between the Y
terminal and any ANDIx input, which must be configured correctly in WATTconfig. In this example, ANDI1 function must be set to power
measurement and the Measurement Source option must be set to SSR1. It is also possible to use an external impulse output meter and
connect this output to the ANDI input, which must then be set to the S0 pulse counter function.
Figure 9: Connection of external meter with S0 impulse output. The meter can measure, for example, the energy produced from the PV
plant. The S0 output of the meter is connected between the GND terminal and the ANDIx input, which must be further configured
correctly in WATTconfig. In this example, the ANDI1 input must be set to the S0 pulse counter function, and the Measurement Source
option must be set to one of the Lx items if the meter measures the PV power produced.
Figure 10: Connection of supported types of temperature sensors to the regulator. The DS18x20 digital sensors are connected three-wire
to the GND, DQ and +5V terminals, analog sensors are connected two-wire between the GND terminals and the corresponding ANDIx
input, which must be correctly configured in WATTconfig. In this example, ANDI3 must be set to NTC and ANDI4 to PT1000.
L1
Current sensing module
N
Regulator
IL1 IL2 IL3 B DQ
Y
LT
ANDI3 ANDI4 ANDI2
R2_1 R2_2
L1
N
ANDI1
R1_1 R1_2
IL3 IL2 IL1
Y
House wiring
+ PV plant
PE
PE
Public grid connection point (main energy meter)
Wire goes through
current transformer
LT (low tariff signal)
I >
B6A
USB
LAN
micro
SD
GND
S2- S1- S4- S3- S6- S5-
+12V
+5V
A
RS485
L2
L3
L1
N
L2
L3 Auxilliary energy meter
with S0 impulse output
L1
Current sensing module
N
Regulator
IL1 IL2 IL3 B DQ
Y
LT
ANDI3 ANDI4 ANDI2
R2_1 R2_2
L1
N
ANDI1
R1_1 R1_2
IL3 IL2 IL1
Y
House wiring
+ PV plant
PE
PE
Public grid connection point (main energy meter)
LT
I >
B6A
USB
LAN
micro
SD
GND
S2- S1- S4- S3- S6- S5-
+12V
+5V
A
RS485
L2
L3
L1
N
L2
L3
DS18x20
NTC
PT1000

WATTrouter Mx - user manual
How to fit and setup the device
Page 16 from 82
Figure 11: Example for 0-10V signal output from the regulator. The corresponding SSR outputs must be set to the PWM function, and the
desired PWM modulation frequency must be set. The outputs SSR 4 to 6 generate the desired signal directly (but the signal may have a
significant output ripple at slow PWM modulation), SSR outputs 1 to 3 generate only PWM, so you must use external PWM/0-10V
converter to get the desired signal.
Figure 12: Connection of positive SSR anodes (typically A1 +) to an external DC source + 12V when the internal power supply of the
controller is heavily loaded. SSR control circuit can be normally powered by + 12V or + 5V terminals. We recommend the + 12V (must be
used if the control voltage >5V is required). However, using the two built-in relays, the voltage at the + 12V terminal can drop to + 8V
and will not fully drive the SSR 4 to SSR 6 outputs in the PWM / 0-10V function, and some of the built-in relays does not need to be
switched on. In this case, connect all SSRs to an external power source as shown in the figure. Firmware since version 1.5 already checks
the voltage drop at + 12V terminal and also enables software optimization of the built-in relay consumption. For details, see chapter
Measured parameters and statuses and chapter Other settings tab.
L1
Current sensing module
N
Regulator
IL1 IL2 IL3 B DQ
Y
LT
ANDI3 ANDI4 ANDI2
R2_1 R2_2
L1
N
ANDI1
R1_1 R1_2
IL3 IL2 IL1
Y
House wiring
+ PV plant
PE
PE
Public grid connection point (main energy meter)
LT
I >
B6A
USB
LAN
micro
SD
GND
S2- S1- S4- S3- S6- S5-
+12V
+5V
A
RS485
L2
L3
L1
N
L2
L3
0-10V
+12V
GND
PWM+ PWM-
+
-
0-10V
(through converter)
+
-
0-10V
(direct output)
PWM function
PWM function
L1
Current sensing module
N
Regulator
IL1 IL2 IL3 B DQ
Y
LT
ANDI3 ANDI4
ANDI2
R2_1 R2_2
L1
N
ANDI1
R1_1 R1_2
IL3 IL2 IL1
Y
Load 1
(only resistive)
House wiring
+ PV plant
PE
PE
Public grid connection point (main energy meter)
Wire goes through
current transformer
Relay 230VAC
LT (low tariff signal)
I > I >
Load 2
(only resistive)
M
1
Load 4
(e.g. motor*)
M
1
Load 5
(e.g. motor*)
Load 3
(only resistive)
I >
B6A
USB
LAN
micro
SD
GND
S2- S1- S4- S3- S6- S5-
+12V
+5V
A
RS485
*) Always use separated contactor
for motors and loads with cos(φ)<>1!
L2
L3
L1
N
L2
L3
L1 T1
A1+
A2-
RGS1A60D..
L1 T1
A1+
A2-
RGS1A60D..
L1 T1
A1+
A2-
RGS1A60D..
12VDC

WATTrouter Mx - user manual
How to fit and setup the device
Page 17 from 82
The controller may be connected only to 230VAC, 50 Hz public electric grids. Regulator must be
protected with a circuit breaker - recommended rating is B6A - and connected loads must also be
adequately protected! Installation may only be done when the facility’s main circuit breaker is
turned off!
Upon completion of the installation process make sure to check thoroughly the connection of the
regulator and the current sensing module. Also check connection of all pluggable terminal blocks,
where NO power grid voltage or voltage outside of tolerances specified in the chapter Technical
specifications may be connected! NO other than resistive (heating) loads may be connected to
power SSRs! Regular relays CANNOT be connected to SSR outputs! It is prohibited to connect
loads with higher than the maximum allowed nominal power! If you fail to observe these rules it
is almost guaranteed that you will damage the regulator and lose your warranty!
For the correct operation of the controller, it is absolutely necessary to ensure proper phasing of
the measured currents with the internal voltage detector. This can be done by selecting the
appropriate phase in the Input Settings tab. It is strongly recommended to connect the controller
so that the phase conductor fed to terminal L1 corresponds to the phase conductor wired
through the measuring transformer corresponding to the IL1 input, which will allow the
measurement to match the default settings of the controller (and therefore the same as required
for older models). The IL2 and IL3 current inputs can be connected arbitrarily, the respective
phases for these inputs must be set up correctly in the WATTconfig control software.
We strongly advise you to protect your loads connected to the power SSRs with fuses suitable for
protection of semiconductors, rather than regular circuit breakers. Please note that SSRs
damaged by overcurrent or short-circuit most likely cannot be claimed under warranty. Make
sure that solid state relays are correctly connected, as required by their user manual.
No electronic devices (various measuring and protective elements, such as sub-meters and
residual current circuit breakers) may be installed between the SSRs and the appliance, since
they may be damaged by impulse power! Always install these devices on the line between the
fuse and the solid-state relay where constant power is available.
If your facility is located in an area with higher risk of overvoltage spikes due to atmospheric
discharge (lightning), we strongly recommend fitting a suitable overvoltage/lightning protection
between the distribution box with the main energy meter and the current sensing module!
If any sensors are connected to the ANDI multi-purpose inputs, it is imperative to properly
configure their function, otherwise these and/or even the ILx inputs may not work properly!
The current sensing module supplied with the WATTrouter Mx controller is fully compatible with
the current sensing module supplied with older types of WATTrouter CWx, WATTrouter CWx
SSR, WATTrouter ECO, WATTrouter M and vice versa. The current sensing module installed with
these controllers can be used with the WATTrouter Mx controller (and vice versa). However,
please note: The terminal marked GND for these older measuring modules must be connected to
the Y terminal of the Mx controller, not to the GND terminal!
If the regulator is constantly connected to PC via USB interface (mostly if long cable is used), we
strongly recommend using an USB isolator!

WATTrouter Mx - user manual
How to fit and setup the device
Page 18 from 82
Note: It is allowed to connect only pure resistive loads to power SSRs. These loads cannot be fitted with own
electronic control system nor with built-in motors (e.g. fans - see the note below). These loads may only have
regular mechanically controlled thermostats and indication LEDs or neon lamps. Almost any regularly produced
boilers, immersion heaters, infra radiators, heating floor pads, motor-free dryers (infra dryer), oil heaters,
cartridge heaters in a solar tanks, etc. may be used.
Note: Each SSR output is capable of providing power to heating loads with built-in fan for longer time (such as
hair dryer, heat radiator). These loads are fitted with a built-in thermal protection, which, if synchronous SSR
control mode is used for that load, will disconnect the load for low power of SSR output (in this scenario, the
built-in fan’s power is not sufficient to cool down the heating element of the load). Therefore, consider fitting
these loads to SSR outputs carefully.
Note: Heating loads connected via residual-current circuit breaker may be connected to SSR outputs.
Note: Heating loads with nominal power up to 2 kW may be connected to relay outputs directly, without using
external contactor.
Carefully examine connection of the controller and then turn off all circuit breakers and deactivate fuse
switches for connected loads. Then turn on the main circuit breaker and the regulator circuit breaker (L1 power
supply). The LED PWR lights up (power on indication). If the light is off, or if it does not shine permanently, or if
the LED ERR starts to flash (error status), proceed according to instructions specified in the Troubleshooting
chapter. In default status no output is active and therefore, no load will be turned on.
Now the controller is fitted and ready for configuration.

WATTrouter Mx - user manual
How to fit and setup the device
Page 19 from 82
INSERTING THE SC-GATEWAY MODULE
The SC-Gateway module is an optional accessory that provides wireless communication with wireless end-
points. Insert the module to sockets in the regulator according to the images below. Before insertion you must
lift the regulator cover with a small screwdriver or similar tool.
Make sure the regulator is turned off before inserting the module!
Keep the proper orientation of the module. Reverse orientation can damage the module!
Insert the module gently, without unusual force!
Figure 13: Insert the module to sockets on regulator
mainboard, use vertical movement as the arrow indicates.
Figure 14: Resulting position of the module inside the regulator.
After regulator power on, the blue LED on the module must indicate the module initialization sequence, refer
to chapter LED Statuses. In case that does not happen, refer to chapter Troubleshooting.

WATTrouter Mx - user manual
How to fit and setup the device
Page 20 from 82
DEVICE CONFIGURATION
You will need notebook or regular PC (placed closely enough to the regulator) with USB interface (hereinafter
referred to as a computer only). The controller is configured using the WATTconfig Mx control software. The
installation package for this software is available on manufacturer’s web pages. Before installing the
WATTconfig Mx control software you need to install the driver for USB interface.
In order to connect to the USB interface, it is necessary - due to safety reasons - to turn off the
entire distribution box before manipulation.
Tip: After you configure Ethernet network connection you may perform all settings including firmware update
over the Ethernet interface. You do not need to use the USB interface at all, provided that the parameters of the
connected LAN are the same as the default controller parameters (see below), and if there is no conflict
between IP addresses or conflict between physical MAC addresses.
Tip: The controller can be monitored and configured via the RS485 interface using the WATTconfig Mx software.
An appropriate USB/RS485 converter is required to connect to this interface using a PC. The RS485 interface is
reserved for various other protocols (such as MODBUS RTU) which might be implemented in future.
If you cannot continue with the settings (due to any reasons), proceed according to instructions specified in the
Troubleshooting chapter.
USB DRIVER INSTALLATION
The installation procedure is described for Windows XP, English locale. The procedure is similar for newer
systems, or it is much simpler (Windows 7).
1. Insert the attached USB cable to the USB connector of the regulator and then to the computer.
2. Turn on the controller. The green LED PWR must light up (power on indication). Also the yellow LED
USB light will or should flash briefly (communication process indication) as the USB device will start to
register in your computer.
3. After a moment, following window must appear confirming that a new device was found: