Chapter 4 – Control Operation
4-4 ACH 500 Programming Manual
4 CALCULATED
TORQUE
This parameter displays motor torque in percent of motor rating, as calculated
by the drive. Press [Up Arrow] to move to the next parameter.
5 CALCULATED POWER
This parameter displays motor power in percent of motor rating, as calculated
by the drive. Press [Up Arrow] to move to the next parameter.
6 DC BUS VOLTAGE
This parameter displays DC bus voltage, as measured in the drive. The
voltage is displayed in volts DC and in % (100% = 1.35 x V
N
). Press [Up
Arrow] to move to the next parameter.
7 OUTPUT VOLTAGE
This parameter displays motor voltage as calculated by the drive. Press [Up
Arrow] to move to the next parameter.
8 DRIVE
TEMPERATURE
This parameter displays the temperature of the drive heatsink in degrees
Fahrenheit and degrees centigrade. Press [Up Arrow] to move to the next
parameter.
9 CONTROL LOCATION
This parameter allows you to select the location of the drive controls for start/
stop, speed reference, and rotation direction commands. Press [ * ] to enter
Setting mode. Press [Up Arrow] or [Down Arrow] to change the control
location. Select:
• KEYPAD R1 to operate the drive from the Control Panel keypad.
• EXTERNAL to operate the drive from an external control device connected
to Terminal Block X50, including the HOA switch and speed pot.
• KEYPAD PI to use the Control Panel keypad to change the reference for a
PI -Controller if using PI control.
Press [ * ] to save the setting.
Press [Up Arrow] to move to the next parameter.
10 KEYPAD REF 1
This parameter displays the ACH 500 reference frequency (Hz) used when in
Keypad R1. Press [ * ] to enter Setting mode. Press [Up Arrow] or [Down
Arrow] to change the value of the reference frequency. This parameter can be
set while viewing any of the first eight Operating Data parameters. Press [ * ]
to save the setting. Press [Up Arrow] to move to the next parameter.
11 KEYPAD PI (REF 2)
This parameter displays the ACH 500 keypad reference used when in Keypad
PI. Press [ * ] to enter Setting mode. Press [Up Arrow] or [Down Arrow] to
change the value of the reference. Press [ * ] to save the setting. Press [Up
Arrow] to move to the next parameter.
12 EXT REF 1 OR 2
This parameter allows you to select between two external control locations.
Use this parameter when Parameter 10.2.1 (Ext 1/Ext 2 Select) is set to
KEYPAD, otherwise the external control location is selected by a digital input.
Press [ * ] to enter Setting mode. Press [Up Arrow] or [Down Arrow] to
change the external control location. Press [ * ] to save the setting. Press [Up
Arrow] to move to the next parameter.
13 EXTERNAL REF 1
This parameter is the external frequency reference (Hz) from control location
R1, the cover-mounted speed pot. The signal source selection is made with
Parameter 10.2.2 (External Ref1 Sel). Press [Up Arrow] to move to the next
parameter.
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