PROGRAMMING
...
LINE FUNCTION
ACTUAL SPEED
2 SPEED SETPOINT
3 ERROR COUNTER
4 ERROR GAIN
5 RAMP RATE
6 ERROR ALARM
7 FULL SCALE SPEED
8 FEEDBACK TEST
9 FULL SCALE FREQ.
DESCRIPTION
RUN
MODE
Tachometer display calibrated
in
user units, with decimal point. Actual Speed is calculated
as:
(Feedback Frequency"," Full Scale
Frequency)
x Full Scale
Speed
and is updated once per second.
Desired Speed in user units, with decimal point. Can be changed while running using the
Right cursor, Increment, and Decrement key (see page
5)
if Front Panel Lock (line 10) is
set
to
Off. The Speed Setpoint will not be allowed to go above the Full Scale Speed value.
Value of the Error Counter shows difference between internally generated speed reference
and
actual feedback device. Reset to zero when Trim Reset input is active (open loop operation).
Amount of Errorapplied-to output to correct for differences between Speed Setpoint and
Actual
Speed. Correction is (±Error Counts X Gain),
in
units of 0 to A bits (10 mV/bit).
PROGRAM MODE
------------
Entered by pressing the RUN/PGM Key when the PGM DIS switch is Off (down position).
Accel and Decel rate for changes to the Speed Setpoint and for Run/Stop transitions.
Ramp
is
in
units of Speed LSDs per second. (For example, changing the Speea Setpoint from 850
to
875, a change of 25 RPMs, will take 5 seconds if the Ramp Rate is set to 5 RPMs
per
second.)
Value of Alarm Setpoint
in
feedback pulses. When the Error Counter
2:
Error Alarm, the
Error
Alarm output
is
turned on. May be used to indicate excessive lag or loss of feedback.
(To
test
the Error Alarm output, set the Alarm to zero; the output should turn on immediately.)
Maximum running speed,
in
user units, which corresonds to full output applied to drive. (To
provide operating headroom, set the Full Scale Speed about
10%
higher than what is actually
needed -e.g. set to 1980 for an 1800 RPM range.) Decimal Point setting for speed
displays
is also selected on this line.
Allows drive and encoder checkout by applying a voltage to the drive and monitoring the
feedback frequency. The Right cursor selects the 0 to A function, which can be ramped
from
0
to 99% output. The next Right cursor displays the feedback frequency in Hz.
Maxmimum feedback encoder frequency when full output is applied to the drive.
(To
provide
headroom, measure the frequency when
90%
output is applied.) This number can also be
calculated by [ (maximum encoder shaft RPM + 60) X (encoder resolution in PPR)
].
10
FRONT PANEL LOCK Front Panel changes to the Speed Setpoint and Error Gain are disabled by selecting On,
or
enabled by choosing Off with the Right cursor. Does not effect Program Mode editing.
These
lines appear on the MAXjr Speed 3 only
11
ADJUST INPUT Select type of external setpoint adjustment. Set to Up/Down for use with Increase and
Decrease contacts for ramping the setpointup or down;
or
Bidirectional for connection
to
a
quadature output Panelcoder (provides incremental up and
down
changes).
12
ADJUST
RATE
DIAGNOSTICS
13
INPUTS TEST
14
FRONT PANEL TEST
15
DIGITS TEST
16
SEGMENTS TEST
Page
6
Set to determine resolution and speed of the external setpoint adjustment device. Each
quadrature cycle will change the Speed Setpoint by
4X
the Adjust Rate (Pot operation).
The
Speed Setpoint will change
by
the Adjust Rate amount for each second the Increase
or
Decrease contacts are active (Mop operation).
These features provide an easily accessible method of checking the operation of the
product
and external connections for proper operation. The error codes listed on page 3 diagnose
additional problems which may not be permanent malfunctions.
Display of active signal and control inputs. The indicators
Rand
b are given when the
Signals A and
B,
respectively, are driven with a high input. The prompts f and 2 are
given
when Inputs 1 and
2,
Ramp Hold and Trim Reset, respectively, are driven with a low input.
Display of active keyboard buttons. The indicators
',d,
P,
and [ are present when the
Increment/On, Decrement/Off, Run/Program, and Reset/Clear keys, respectively, are pressed.
The display shows a constant pattern to verify that each display digit is functioning.
All display digits and annunciators are illuminated to verify proper operation.
