M-Maxâ„¢ Series Adjustable Frequency Drive - Eaton Corporation

Operational Data Indicator (Operational)
REF
MON
PAR
FLT
OK
READY
RUN STOP ALARM FAULT
FWD REV I/O KEYPAD BUS
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).
Operation (RUN) via Control Signal Terminal (I/O) with
Left Rotating Field (REV) (for example, –12.34 Hz)
REF
MON
PAR
FLT
READY
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).
RUN STOP ALARM FAULT
FWD REV I/O KEYPAD BUS
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.
REF
MON
PAR
FLT
READY
RUN STOP ALARM FAULT
FWD REV I/O KEYPAD BUS
Operation
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).
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 80.
The acceleration and deceleration ramps specify the
time change for the output frequency: from zero to
fmax (FS = 60 Hz) or from fmax back to zero.
The figure on Page 52 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 nmax .
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 52).
M-Max Series Adjustable Frequency Drive MN04020003E—April 2011 www.eaton.com 51