Chapter 4 – Control Operation
4-2 ACH 500 Programming Manual
Table 4-1 Operating Data Parameters
Parameter Range/Unit Description
1 OUTPUT FREQUENCY Hz Frequency to motor.
2 SPEED rpm/%/no units Calculated speed, either motor RPM, %, or a scaled
speed display. Displayed value is based on
frequency minus slip.
3 MOTOR CURRENT A Motor current, (10% accuracy).
4 % RATED TORQUE % Calculated motor torque. 100 is the motor nominal
torque rating, (15% accuracy).
5 % RATED POWER % Calculated motor power. 100 is the motor nominal
power rating, (15% accuracy).
6 DC BUS VOLTAGE V / % Intermediate circuit DC voltage displayed in VDC
and % of full voltage.
7 OUTPUT VOLTAGE V Calculated motor voltage, (5% accuracy).
8 DRIVE TEMPERATURE degrees C and F Temperature of the heatsink.
9 CONTROL LOCATION KEYPAD R1/KEYPAD PI/
EXTERNAL
Control location selection (R1 = Referenced,
PI = Closed loop controller).
10 KEYPAD REF 1 Hz Frequency reference from Control Panel.
11 KEYPAD PI (REF 2) % Frequency reference (controller reference for PI)
from Control Panel.
12 EXT REF 1 OR 2 REF1/REF2 External control place selection.
13 EXTERNAL REF 1 Hz External frequency reference.
14 EXTERNAL REF 2 % External controller reference.
15 RUN TIME h/min Elapsed time meter.
16 KILOWATT HOURS kWh kWh meter.
17 LAST-RECD FAULT – The latest fault and warning indication.
18 SECOND-RECD FAULT – The previous fault and warning indication.
19 FIRST-RECD FAULT – The oldest fault and warning indication.
20 PARAMETER LOCK OPEN xxx/LOCKED xxx
OPEN/LOCKED
Parameter software lock (xxx = 358 to unlock).
Lock from Digital Inputs.
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