User Manual

Page 18
ENS2
www.elektroautomatik.de
[e-mail]
EA Elektro-Automatik GmbH
Helmholtzstr. 31-33 • 41747 Viersen
Germany
Fon: +49 2162 / 3785-0
Fax: +49 2162 / 16230
2.2.4 Wiring of versions „ENS2 10.5kW“ and “ENS2 30kW”
These two versions are delivered with included, mounted and wired contactors which allow for following load:
• Model ENS2 10.5kW (max. 16 A of current, max. 10.5 kW of power):
» up to 3x ELR 9000 device possible
• Model ENS2 30kW (max. 45 A of current, max. 30 kW of power):
» up to 6x ELR 9000 HP / PSB 9000
» up to 3x ELR 9000
» 1x PSB 10000 / ELR 10000
The installer just needs to connect the module to the public grid and the ELR 9000 to the ENS2, via the terminals
according to the print on the rear side of the module.
2.2.4.1 Additionally required material (not included)
• 4-wireor5-wire,inexibleorexiblecableswithacrosssectionmatchingthemax.outputcurrentoftheenergy
recovery system
• Whenusingexiblecables:cableendsleevesmatchingthecrosssection
• Suitable main circuit breakers (type K) for the whole installation
2.2.4.2 Steps to wire version „ENS2 10.5kW“
Also see the wiring schemes in „2.2.2. Types of installation“.
1. Preparethecables(cuttorequiredlength),stripcableends(~11mm)and,ifexiblecablesareused,crimp
cable end sleeves.
2. Loosen the screws in the screw terminals.
3. Connect the device’s AC connector to contactor 2 output on the ENS2 module (see print on the rear side of
ENS2).
4. Connect the ENS2 to mains (see rear view of ENS2, screw terminals on the left side).
5. Tighten the screws in the screw terminals (1.5 Nm).
2.2.5 Commission
1. Switch on main circuit breaker for the entire ENS2 + devices system
2. Switch on extra circuit breakers for the device(s), if there are any.
1. Switch on ENS2 circuit breakers (installed on the rear side of the module). The module will start.
2. Optional settings:
The following two parameters are factory set to certain defaults, but can be changed
if required. In order to do so, a password is needed, which can be requested from the
manufacturer.
a. Selection of the„Countrydata set“: „VDE-AR-N4105“ (german standard) or„CEI-021“ (italian standard)
Fordetailsanddi󰀨erencesaboutbothstandardssee1.8.4.
b. IncaseofCEI-021hasbeenselected:checkingandpossiblychangingtheparameter“Numberofrelays”,
because standard CEI-021 allows for installation of below 20kW to use just one contactor.
For the versions “ENS2 10.5kW” and “ENS2 30kW” this settings must remain “2” or be
set to “2”.
3. Check the display of the ENS2 module:
a. Correct:afteraself-testanda“mainscheck”,itshowsthe„Overview“screen
b. Wrong:afterthe“mainscheck”,itshowsanerror
Possible cause: ENS2 not wired correctly --> check and possibly apply corrections
If mains supply voltage and frequency are within the allowed limits for at least 60 s, the supervision circuit should
switch the contactors on. Only then it is possible for the device(s) to run and also start energy recovery because
thedevicescannotrundi󰀨erently.
4. Switch on power generation device and operate it according to the operating guide.