Magnum Energy ME-MR Series Owner's Manual page 33

Stak CLK appears on the LCD and
the FAULT (red) LED is on. The INV
(green) LED's is off.
Figure 5-25, StackClock Fault
5.3.3.3 Stacking Fault Messages – A fault condition may occur when
two inverters are stacked in series - using the stacking interface to provide
120/240VAC output - that is not possible on a single inverter installation.
Refer to the following fault messages to help troubleshoot the inverters.
• StackClock 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, this is a custom made cable). 2. Inspect
the stacker cable and reconnect at both ends (listen and make sure
you hear an audible "click" from the connectors at both inverters).
Info: This fault has been known to occur when a Magnum Energy
accessory is plugged into the Stack Port, but the installation is not
using multiple inverters in a stacked confi guration. If this occurs,
perform an inverter reset (see section 6.2).
StakMode appears on the LCD and
the FAULT (red) LED is on. The INV
(green) LED's is off.
Figure 5-26, Stack Mode Fault
• Stack Mode Fault - This unit has detected a problem with the "other"
stacked inverter, check that unit for a fault condition.
Remedy: This fault will automatically clear when the fault with
the other inverter is corrected.
StkPhasL appears on the LCD and
the FAULT (red) LED is on. The INV
(green) LED's is off.
Figure 5-27, StackPhase Fault
• 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
relay is bad; or 4.The inverter's AC input circuit breaker may be open.
Remedy: If this fault doesn't clear after checking these four recom-
mendations; perform an inverter reset (see section 6.2).
©2009 Magnum Energy Inc.
Operation
E R R O R!
S ta k C L K
E R R O R!
S ta K M o d e
E R R O R!
S tkP hasL
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