Fronius Eco 25.0-3-S, Operating Instructions Manual

Page: 34 / 196

34
Energy Manager
(under Relay
menu item)
The "Energy Manager" (E-Manager) function can be used to activate the floating switch
contact in such a way that it functions as an actuator.
Thus, a consumer that is connected to the floating switch contact can be controlled by
specifying a switch-on or switch-off point that depends on the feed-in power (effective pow -
er).
The floating switch contact is automatically switched off:
- If the inverter is not feeding any power into the grid
- If the inverter is manually switched to Standby mode
- If the effective power is set to < 10% of the nominal output of the inverter.
GAF As soon as GAF mode is selected, the relay is switched on. The relay
opens as soon as the power stage set registers an error and goes from
normally feeding energy into the grid to being in an error state. This
means that the relay can be used for fail-safe functions.
Application example
It may be necessary to perform phase compensation when using a sin -
gle-phase inverter at a multiphase site. If an error occurs on one or
several inverters and the connection to the grid is broken, the other in -
verters must also be disconnected to maintain the phase balance. The
"GAF" relay function can be used in conjunction with the Datamanager
or an external protection device to recognise or signal that an inverter
is not feeding in or is disconnected from the grid and to then discon -
nect the remaining inverters from the grid using a telecontrol com -
mand.
Active output:
ON: The floating NO contact is on all the time the inverter is in operation
(as long as the display is not dark or is displaying something).
OFF: The floating NO contact is off.
Energy Manager:
E-Manager: Further details on the "Energy Manager" function may be found in the
"Energy Manager" section.
Relay test
Function test to determine whether the floating switch contact switches
Switch-on point (only if "Energy Manager" function is activated)
for setting the effective power limit beyond which the floating switch contact is switched on
Factory setting 1000 W
Setting range Set switch-off point up to the maximum nominal output of the in -
verter (W or kW)
Switch-off point (only if "Energy Manager" function is activated)
for setting the effective power limit beyond which the floating switch contact is switched off
Factory setting 500
Setting range 0 to the set switch-on point of the inverter (W or kW)
To activate the Energy Manager function, select the "E-Manager" item and press the "En -
ter" key.
When the "Energy Manager" function is running, the "Energy Manager" symbol will ap -
pear in the top left corner of the display: