WATTrouter ECO - user manual
www.solarcontrols.cz
How to fit and setup the device
Page 33 from 66
sunrise zenith, 90° 50' is used. Sunrise time is used to reset energy counters ("Supplied energy"-fields)
in the main window, provided that the applicable mode in the field "CombiWATT – Energy counter
reset" is selected.
Day of week – (since firmware version 1.7) shows the current day of week, which is obtained from the
controller date.
Serial number- displays serial number and it is unique for each regulator.
Firmware version – displays actual regulator firmware version.
Date (regulator) – it indicates the real time running inside the regulator (date part).
Time (regulator) – it indicates the real time running inside the regulator (time part).
Note:
Regulator real time is backed up with a built-in lithium battery, so it runs even if the regulator power
supply is turned off.
Date (client) – it displays the real-time running on the PC (date part).
Time (client) – it displays the real-time running on the PC (time part).
INPUT SETTINGS TAB
In this tab you may set measuring inputs and the FB input.
Measuring input settings:
Current orientation - it is used to change the sign of measured powers, if the current sensing module is
fitted in inverted position, or in cases for example, when it is desirable to pass the wire through the
module in inverted direction.
Phase - it is used to set the physical phase to given input when its function is set to power
measurement. Assign the phase so that the measured currents are in phase with voltage. Check the
assignment using a control oscilloscope and a purely resistive (thermal) load on the given phase.
Note:
The Phase parameter replaces the "Phase Order Setting" menu from older WATTrouter models
and allows you to set any phasing for all inputs with the power measurement function.
Ratio for external CTs - set this ratio only if you use additional external current transformers (CTs),
whose secondary coils are shorted with a wire passing through measuring coils of the current sensing
module. If you use standard connection for WATTrouter device that is, the facility or household supply
wire is passing directly through measuring coils, then this ratio should be 1:1 (however, this ratio can
also be used to calibrate current measurement even in the case of standard wiring without external
measuring transformers). External current transformers can extend the measuring range of the
controller up to any value, depending on the conversion rate of the external current transformer.
Example:
Let us say you want to use WATTrouter ECO in a facility where the main circuit breaker is
rated up to 3x400A. In this case you have to buy external current transformers with ratio 400A:5A.
Connect/short-cut their secondary terminals using a wire, and at the same time, pass it through
measuring coils of the current sensing module (see figure 7). Now set the conversion rate to 400:5.
However, in order to use the full range of the built-in A/D converter, it is recommended to make 4
turns around the measuring coils to get optimum conversion rate of 400A:20A. Then, set the
conversion rate to 400:20.
