Operation
M-Max Series Adjustable Frequency Drive MN04020003E—October 2013 www.eaton.com 53
Operational Data Indicator (Operational)
The start release is done by actuating one of the digital inputs
with +24V:
●
Terminal 8: FWD = Clockwise rotating field (Forward Run)
●
Terminal 9: REV = Counterclockwise rotating field
(Reverse Run)
The control commands are interlocked (exclusive OR) and
require a rising voltage edge.
The start release (FWD, REV) is shown in the top status line
(LCD display) by the arrow ( ) switching from STOP to RUN.
The frequency is shown with a minus sign with a start
release with a left rotating field (REV).
A controlled run-down can be set using parameter P6.8
(STOP function) (P6.8 = 1).
The relevant deceleration time is set in parameter P6.6. The
acceleration time are set in parameter P6.5.
Information on settings and the description of the
parameters used here are provided in “Drives Control (P6)”
on Page 82.
Operation (RUN) via Control Signal Terminal (I/O) with
Left Rotating Field (REV) (for example, –12.34 Hz)
You can now set the output frequency (0–60 Hz) and
therefore the speed of the connected AC motor (0–n
motor
)
with the setpoint value potentiometer via terminal 2
(proportional voltage signal 0–10V). The change in output
frequency here is delayed based on the specified
acceleration and deceleration ramps. In the factory settings,
these times are set to 3 seconds.
The acceleration and deceleration ramps specify the
time change for the output frequency: from zero to
f
max
(FS = 60 Hz) or from f
max
back to zero.
The figure on Page 54 shows a good example of the
process, if the release signal (FWD/REV) is switched on and
the maximum setpoint voltage (+10V) is applied. The speed
of the motor follows the output frequency depending on the
load and moment of inertia (slip), from zero to n
max
.
If the release signal (FWD, REV) is switched off during
operation, the inverter is blocked immediately (STOP). The
motor comes to an uncontrolled stop (see [1] in the figure on
Page 54).
RUN STOP ALARM FAULTREADY
REF
FWD REV I/O KEYPAD BUS
MON
PAR
FLT
RUN STOP ALARM FAULTREADY
REF
FWD REV I/O KEYPAD BUS
MON
PAR
FLT
Display in automatic alternation
By actuating the OK button, you can set the display
mode to stay on the value for the output frequency
(0.00 Hz).
OK
The stop command can also be given via the STOP
button on the operating unit. The STOP button is
active in all operating modes. It can be disabled with
parameter (P6.16 = 0).
RUN STOP ALARM FAULTREADY
REF
FWD REV I/O KEYPAD BUS
MON
PAR
FLT
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