SMA POWER PLANT CONTROLLER - Manual (Page 59)

SMA Solar Technology AG 13 Appendix
Operating Manual PPC-BE-P7-en-13 59
13.4 Output Value Specification Under Fault Conditions
If transmission of the setpoints under fault conditions is not possible via Modbus protocol, the Power Plant Controller uses
a substitution value or the last transmitted value. This is set for each specific system by SMA Service.
Basically, three communication errors are possible:
Once the error in transmitting the setpoints of the Power Plant Controller via Modbus protocol has been eliminated,
transmission of the output values calculated by the Power Plant Controller to the devices of the PV system automatically
recommences.
13.5 Directive for Secure Passwords
To protect the Power Plant Controller from unauthorized access, you must select a secure password.
SMA Solar Technology AG recommends choosing the password in accordance with the following directives:
• The password has at least five characters.
• The password consists of letters, at least one number, and at least one special character.
• The password does not contain umlauts.
13.6 Type Label
The type label clearly identifies the product. There are two type labels attached to the Power Plant Controller. The type
labels are located on the right-hand inside panel and on the right-hand outside panel of the Power Plant Controller.
You will find the following information on the type label:
• Device type
• Option code
• Serial number
• Production version
• Device-specific characteristics
You will require the information on the type label to use the product safely and when seeking customer support from the
SMA Service Line.
Error type Control of the
Power Plant Controller
Parameterization
The operator setpoints are not
received by the
Power Plant Controller.
The output values are calculated with
the last valid setpoint or with a
substitution value.
Parameterization is carried out at the
Power Plant Controller.
Actual values from the network
analyzer are not received by the
Power Plant Controller.
New output values cannot be
calculated. The controller switches to
manual operation and transmits the
last valid output value or a substitution
value.
Parameterization is carried out at the
Power Plant Controller.
Output value transmission to the
devices is disturbed
Depending on the parameterization,
the connected devices work with the
last valid output values received or
with a substitution value.
Parameterization is carried out at the
connected devices.