8.2.1.2
Displaying the triggering source of the auxiliary relays
To view the actual triggering source of the two auxiliary relays, press the SET button and use the
up/down arrows to navigate down to the two relay fields (b). Select one of the two relays and press
SET to view the information indicating the cause of the last relay activation (if the relay is presently
activated) or deactivation (if the relay is presently deactivated. The display also shows the logic
combination mode: AND or OR.
To exit the selected relay field, press ESC.
These information fields are visible even if the auxiliary relay ARM-02 see chapter 9.3), is not
connected.
8.2.2 Displaying the operating mode of the equipment (Info n° 15013,15014,15015)
Night: the solar generator voltage (or luminous intensity) is not enough to start the equipment. When
this indication appears during the day, it means a generator fault (wiring).
Charge: the charger operates normally at the maximum power point of the solar generator.
Charge U: the VarioString operates in voltage regulation (absorption, equalization, or floating). In this
status, it is normal to see a current lower than the maximum possible.
Charge I: the VarioString has reached the maximum allowed current fixed by the parameter {14001}
"battery charge current". In this status, the power of the generator is limited to a lower value then
the maximum possible.
Charge T: the maximum permissible temperature of the VarioString is reached and the power is
limited by the temperature. This status is not a problem but may highlight that the system
performances could be enhanced by reducing ambient temperature.
Charge P: the max power of the VarioString is reached (7000W). This mode is also shown if one of the
two MPPT inputs reaches its maximum power in independent mode (3500W).
Charge Ipv: the max current is reached for one of the two MPPT inputs (13A).
Security: the equipment turns off due to a fault normally indicated by a message on the RCC or by
the "error" indicator (3) on the equipment.
Off: the equipment is manually turned off by the operator or using a remote control.
8.2.3 Displaying security errors (Info n° 15049)
When a security error occurs, the device will stop functioning. A short text, limited to 8 characters, will
appear on the display indicating which kind of error it is.
Text
Description
None
No error. The unit is fully functional
GroundBat
The battery grounding mode is different from that chosen in the parameter settings
(chap. 4.4.1.)
GroundPV
The PV grounding in parallel or series mode is different from that chosen in the
parameter settings (chap. 4.4.1).
GroundPV1
The grounding of the MPPT input PV1 is different from that chosen in the parameter
settings (chap. 4.4.1).
GroundPV2
The grounding of the MPPT input PV2 is different from that chosen in the parameter
settings (chap. 4.4.1).
OverTemp
An abnormal high temperature is detected (Alarm 014).
OverV_B
A battery voltage higher than 68V has been detected (alarm 20).
UnderV_B
The battery voltage is too low to start the charger.
OverI_PV
A PV voltage over 600V has been detected in parallel mode, or over 900V in series
mode (alarm 82).
OverI_PV1
A PV voltage over 600V has been detected in the MPPT input PV1.
OverI_PV2
A PV voltage over 600V has been detected in the MPPT input PV2.
OverV_PV
The max input current has been exceeded (series or parallel cabling).
OverV_PV1
The max input current has been exceeded in PV1.
User manual
V 1.0
Studer Innotec SA
VarioString
27
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