Keypad of the Drive
H-Max HVAC Drives
MN04008004E—September 2011 www.eaton.com
5
Editing Values on Graphical Keypad
HOA Control Button
The HOA (Hand-Off-Auto) button is used for two functions:
to quickly access the Control page and to easily change
between the Hand (Keypad), Off, and Auto (Remote) control
places.
Control Place
The
control place
is the source of control where the drive can
be started and stopped. Every control place has its own
parameter for selecting the frequency reference source. In
the HVAC drive, the
Hand control place
is always the keypad.
The
Auto control place
is determined by parameter P2.1.1
(Keypad, I/O Terminal, I/O three-wire, or Fieldbus CTRL). The
selected control place can be seen on the status bar of the
keypad.
Local Control
The keypad is always used as control place while in hand
control. Hand control has higher priority than auto control.
Therefore, if, for example, bypassed by parameter P2.1.17
through digital input while in
Remote
, the control place will
still switch to Keypad if
Hand
is selected. Switching between
Hand, Off, and Auto Control can be done by pressing the
HOA button on the keypad.
Changing Control Place
Change of control place from
Hand
to
Auto
(keypad).
1. Anywhere in the menu structure, push the HOA button.
2. Push the
arrow up
or the
arrow down
button to select
Hand/Off/Auto
and confirm with the OK button.
3. On the next display, select
Hand
,
Off
, or
Auto
and again
confirm with the
OK
button.
4. The display will return to the same location as it was
when the
HOA
button was pushed. However, if the
Remote control place was changed to Hand (Keypad)
you will be prompted for keypad reference.
STOP READY I/O
STOP READY I/O
STOP READY I/O
OK OK
OK
STOP READY I/O
STOP READY I/O
OR:
BACK
RESET
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