Parameters
M-Max Series Adjustable Frequency Drive    MN04020003E—October 2013    www.eaton.com 61
Display Unit
The following shows the display unit (LCD display with all 
display elements).
LCD Display (Areas)
The display unit consists of a backlit liquid crystal display 
(LCD). It is divided into four areas.
Areas of the LCD Display
General Information on Menu Navigation
By applying the specified supply voltage to the connection 
terminals L2/N and L3 (MMX11), L1 and L2/N (MMX12) or 
L1, L2/N and L3 (MMX32, MMX34), the frequency inverter 
automatically runs the following functions:
●
The lighting of the LCD display is switched on and all 
segments are actuated briefly
●
After the self-test, the top status line of the LCD display 
indicates that the device is ready to start and proper 
operation by an arrow   under READY. The arrow under 
STOP indicates that there is no start command (FWD or 
REV)
●
The arrow   in the bottom status line shows the actuation 
via control signal terminals with the factory setting on I/O 
Control (Control Input/Output). The arrow over FWD 
(Forward) indicates the basic rotational direction (phase 
sequence for a clockwise rotating field) on the output 
terminals U/T1, V/T2 and W/T3)
●
Display for the operating data M1.1 and 0.00 Hz (output 
frequency) in automatic alternating sequence. The arrow 
 in the left-hand status line indicates menu level MON 
(Monitor = Operating data display)
Operational Data Indicator (Operational)
The frequency inverter is ready for operation and can be 
started via the control signal terminal with the specified 
values from the factory settings when connecting the 
allocated motor output (see “Commissioning with Control 
Signal Terminals (Factory Setting)” on Page 52).
Area Description
1 Status 
indicator
The arrowheads ( ) on the top border show 
information regarding the drive:
READY = Ready to start
RUN = Operating notification
STOP = Stop, stop command activated
ALARM = Alarm message activated
FAULT = The drive has been stopped due to an error 
message
2 Plain text 
display
Two 14- and three 7-segment blocks for displaying:
AL = Alarm message
F = Error messages
M = Measurement value (operating data)
P = Parameter numbers
S = System parameter
- = Anticlockwise field of rotation (REV)
The respective units of measurement are displayed in 
the bottom line
3 Menu level The arrow   shows the selected main menu:
REF = Reference value input (reference)
MON = Operational data indicator (monitor)
PAR = Parameter levels
FLT = Fault log (Fault)
4 Control 
commands
The arrowhead   points to the selected rotating field 
direction and the active control level:
FWD = Clockwise rotating field (forward run)
REV = Counterclockwise rotating field (reverse run)
I/O = Via control terminals (input/output)
KEYPAD = Via control unit
BUS = Via fieldbus (interface)
RUN STOP ALARM FAULTREADY
REF
FWD REV I/O KEYPAD BUS
MON
PAR
FLT
1
4
23
By actuating the OK button, you can set the 
alternating display mode to stay on the output 
frequency (0.00 Hz).
RUN STOP ALARM FAULTREADY
REF
FWD REV I/O KEYPAD BUS
MON
PAR
FLT
Display in Automatic Alternation
RUN STOP ALARM FAULTREADY
REF
FWD REV I/O KEYPAD BUS
MON
PAR
FLT
OK