Operating instructions

Protect PV.600/800 OD Series - Operating Instructions
8000041160 BAL Page 35 of 100
5.1.2 "Waiting for Feed Conditions" Status
In this status, the Protect equipment continuously checks the DC
voltage from the PV cells that is present.
The voltage and frequency of the incoming mains are also
checked regularly and compared with the monitoring values. It is
not yet fed into the mains.
Change of status:
(1) If the DC voltage rises above a certain limit value for a certain
time and the mains voltage and mains frequency are within a
certain setpoint range, the control system switches to the "Op-
eration" status. The inverter stack is switched on for a start-up
attempt. If the DC voltage collapses too dramatically during
this, the INV stack is switched off again and there is a delay
until the next start-up attempt is made. The equipment will not
switch to the "Operation" status until any dip in the DC voltage
that occurs during a start-up attempt is within acceptable limits.
(2) If the DC voltage falls below a certain value for a certain time,
the equipment switches to the "Night" status.
(3) If a deactivating or self-acknowledging fault is triggered, the
equipment switches to the "Fault" status.
(4) The status can be switched from "Waiting for feed conditions"
to "OFF" using the "Off" control command.
5.1.3 "Operation" Status
The mains supply is established if all conditions for operation are
met in the start routine with no deactivating or self-acknowledging
faults. The set monitoring values are regularly checked.
Output contactor K7 is closed for the mains supply.
Change of status:
(1) If the power generated falls below a limit value for a certain
time, the operating conditions are no longer met and the
equipment switches to the "Waiting" status.
(2) If a deactivating or self-acknowledging fault is triggered, the
equipment switches to the "Fault" status.
(3) The status can be switched from "Operation" to "OFF" using
the "Off" control command.
5.1.4 "Waiting" Status
If the power fed in falls below a limit value when the equipment is
in "Operation", the equipment switches to the "Waiting" status. If
the DC voltage is too low to convert, the feed conditions for the
"Waiting for feed conditions" status are retained.
So that the inverter does not switch back on again immediately,
thereby subjecting the output contactor K7 to unnecessarily high
load due to frequent switching, after the "Operation" status the
equipment initially switches to the "Waiting" status. This status is
maintained for a certain time and is only then switched to the
"Waiting for feed conditions" status.