Magnum Energy ME-MR Remote - Manual (Page 39)

©2013 Magnum Energy, Inc. 33
5.0 Operation
5.3.3.2 Stacking Fault Messages
A fault condition may occur when multiple inverters are connected together
(i.e., stacked)—that is not possible on a single inverter installation.
FAULT !
Stak CLK
Stak CLK appears on the LCD and
the FAULT (red) LED is on. The INV
(green) LED is off.
Figure 5-31, Stack Clock Fault
StakMode appears on the LCD and
the FAULT (red) LED is on. The INV
(green) LED is off.
FAULT !
StakMode
Figure 5-32, Stack Mode Fault
StckPhas appears on the LCD and
the FAULT (red) LED is on. The INV
(green) LED is off.
Figure 5-33, Stack Phase Fault
FAULT !
StckPhas
• Stack Mode Fault – A problem with the ‘other’ stacked inverter has
been detected, check that unit for a fault condition.
Remedy: This fault automatically clears when the fault with the
other inverter is corrected.
• Stack Phase Fault – 1. The AC input wiring is incorrect; or, 2. One phase
was lost from the AC input source; or, 3. One of the inverter’s internal transfer
relays is bad; or, 4. The inverter’s AC input circuit breaker may be open.
Remedy: If this fault doesn’t clear after checking the above recom-
mendations, perform an inverter reset (see Section 6.2).
• Stack Clock Fault – There is a stacker cable problem, or one inverter
is losing synchronization with the other inverter.
Remedy: 1. Ensure you are using a Magnum stacking cable (this
is not a telephone/data cable, it is custom made). 2. Inspect the
stacker cable and reconnect at both ends (ensure you hear an au-
dible “click” from the connectors at both inverters).
Info: This fault may occur when a Magnum Energy accessory is
plugged into the Stack port, but the installation is not using mul-
tiple inverters in a stacked confi guration. If this occurs, perform an
inverter reset (see Section 6.2).