Chapter 4 – Control Operation
ACH 500 Programming Manual 4-3
*) Visible only when PI-Control macro or P&F Autom. macro is selected.
**) Visible only when P&F Autom. macro is selected.
You may change the values of some parameters to fit the needs of your
application. For example, to control the ACH 500 from the keypad rather than
the HOA switch and speed pot or external devices:
1. Press [Left Arrow] or [Right Arrow] until the LCD Display displays any
one of the Operating Data Parameters listed in Table 4-1.
2. Press [Up Arrow] or [Down Arrow] until 9 CONTROL LOCATION
displays. EXTERNAL displays on the second line of the LCD Display.
3. Press [ * ] to enter the Parameter Setting mode. This displays square
brackets [ ] around the EXTERNAL display.
4. Press [Up Arrow] or [Down Arrow] to change the EXTERNAL display
to KEYPAD R1.
5. Press [ * ] to save the selection and exit Setting mode.
This procedure, together with some other modifications, allows you to operate
the ACH 500 from the keypad.
Parameter Selection
The following procedures describe the Operating Data parameters, how to
change values, and how to advance through the parameters.
1 OUTPUT FREQUENCY
This parameter displays the ACH 500 frequency (Hz) to the motor. Press [Up
Arrow] to move to the next parameter.
2 SPEED
This parameter displays a calculated speed based on load and slip
compensation. With no slip compensation, motor speed decreases as load
increases. As default, the speed is displayed in motor RPM. The scaling of
this display is set by Start-up Data Parameter E (User Display Scale). The
speed display can be scaled to show % or any other scaled value up to 10,000.
This will allow the ACH 500 to display the process speed, i.e., cans per
minute. Press [Up Arrow] to move to the next parameter.
3 MOTOR CURRENT
This parameter displays motor current. Long motor cables can cause an
inaccurate current display. Press [Up Arrow] to move to the next parameter.
21 APPL BLOCK OUTPUT * Hz PI-Controller output signal.
22 ACTUAL VALUE 1 * % Feedback signal for the PI Controller.
23 ACTUAL VALUE 2 * % Feedback signal for the PI Controller.
24 LAG MOTORS RUNNING ** 0 – 3 Number of lag motors running in Pump and Fan
Control.
25 CONTROLLER OUTPUT % PI-Controller output signal.
26 CONTROL DEVIATION % Difference between reference and actual signal.
27 ACT VALUE 1 (PFC) Engineering Units Actual (feedback) signal 1.
28 ACT VALUE 2 (PFC) Engineering Units Actual (feedback) signal 2.
Parameter Range/Unit Description
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