Delta RPI M50A_120 User Manual

91
Installation and Operation Manual for RPI M50A
10. Error messages and trouble shooting
EN
Message Possible cause Solution
Solar1 High ● Actual Solar1 voltage is over
1000 V
DC
.
● Modify the solar array setting, and
make the Voc less than 1000 V
DC
.
● Detection circuit malfunction. ● Check the detection circuit inside
solar inverter.
Solar2 High ● Actual Solar2 voltage is over
1000 V
DC
.
● Modify the solar array setting, and
make V
DC
less than 1000 V
DC
.
● Detection circuit malfunction. ● Check the detection circuit inside
solar inverter.
10.2 Warnings
Message Possible cause Solution
Solar1 Low ● Actual Solar1 voltage is under the
limit.
● Check the Solar1 voltage connection
to solar inverter terminal.
● Some devices were damaged inside
solar inverter if the actual Solar1 volt-
age is close to “0”.
● Check all switching devices in boost1.
● Detection circuit malfunction. ● Check the detection circuit inside
solar inverter.
Solar2 Low ● Actual Solar2 voltage is under the
limit.
● Check the Solar2 voltage connection
to solar inverter terminal.
● Some devices were damaged inside
solar inverter if the actual Solar2 volt-
age is close to “0”.
● Check all switching devices in boost2.
● Detection circuit malfunction. ● Check the detection circuit inside
solar inverter.
10.3 Faults
Message Possible cause Solution
AC Current High ● Surge occurs during operation. ● Call Delta Support.
● Driver for inverter stage is defective. ● Check the driver circuit in inverter
stage.
● Switching device is defective. ● Check all switching devices in inverter
stage.
● Detection circuit malfunction. ● Check the detection circuit inside
solar inverter.
Bus Unbalance ● Not totally independent or parallel
between inputs.
● Check the inputs connections.
● PV array short to ground. ● Check the PV array insulation.
● Driver for boost is defective or discon-
nected.
● Check the driver circuit for boost
inside solar inverter.
● Detection circuit malfunction. ● Check the detection circuit inside
solar inverter.

Delta RPI M50A_120 Specifications

General

Brand	Delta
Model	RPI M50A_120
Category	Inverter
Language	English