Fronius Signal Card - Handbuch (Seite 26)

12
Technical data
Fronius Signal Cards may be used with inverters from serial number
14330071.
A hardware update is required for older inverters. Please contact your
installation engineer for further information.
Applications
Special fea-
tures
(continued)
Fronius Signal Card
Supply voltage: 5 V DC (through solar modules)
Dimensions (l x w x h): 140 x 100 x 26 mm
Maximum relay switching characteristics
- U(DC):
50 V
- I(DC): 1 A
- U(AC): 250 V
- I(AC): 4 A
Maximum cable cross-section: 1.5 mm² / cable
Recommended connection cable: 3-pin 0.75 mm² sheathed cable
- The buzzer only sounds while the inverter is being supplied with
power from the solar modules.
- The relay remains in its switched position, even when the DC supply
is terminated due to the onset of darkness.
- A service code can only be acknowledged (and the relay reset) when
the DC supply is available.
- The buzzer sounds briefly while the inverter is starting up - this is a
standard part of the initialisation routine and does not indicate a mal-
function.
ON/OFF switch