Emerson PACMotion VFD Series - Page 60

60 PACMotion VFD AC Variable Speed Drive User Guide GFK-3111A
Par Parameter Name Minimum Maximum Default Units
P2-35 Analog input AI2 offset -500.0 500.0 0.0 %
Sets an offset, as a percentage of the full scale range of the input, which is applied to the analog input signal.
P2-36 Start mode select / automatic restart See Below Auto start %
Denes the behaviour of the drive relating to the enable digital input and also congures the Automatic
Restart function.
Edge triggered start Following Power on or reset, the drive will not start if Digital Input 1 remains closed.
The Input must be closed after a power on or reset to start the drive.
Auto start
Following a Power On or Reset, the drive will automatically start if Digital Input 1 is closed.
Auto start, 1 reset Following a trip, the drive will make up to 5 attempts to restart at 20 second intervals.
The drive must be powered down to reset the counter. The numbers of restart
attempts are counted, and if the drive fails to start on the nal attempt, the drive will
fault with, and will require the user to manually reset the fault.
Auto start, 2 reset
Auto start, 3 reset
Auto start, 4 reset
Auto start, 5 reset
DANGER! “Auto” modes allow the drive to Auto-start, therefore the impact on system/Personnel safety
needs to be considered.
P2-37 Keypad start mode 0 7 1 -
This parameter is only active when P1-12 = 1 or 2. When settings 0 to 3 are used, the drive must be started
by pressing the Start key on the keypad. When settings 4 – 7 are used, the drive starting is controlled by the
enable digital input.
0 Minimum speed,
keypad start
Following a stop and restart, the drive will always initially run at the
minimum speed P1-02.
1 Previous speed,
keypad start
Following a stop and restart, the drive will return to the last keypad
setpoint speed used prior to stopping.
2 Current speed,
keypad start
Where the PACMotion VFD is congured for multiple speed references
(typically Hand / Auto control or Local / Remote control), when switched
to keypad mode by a digital input, the drive will continue to operate at
the last operating speed.
3 Preset speed 8,
keypad start
Following a stop and restart, the PACMotion VFD will always initially run
at Preset Speed 8 (P2-08).
4 Minimum speed,
terminal start
Following a stop and restart, the drive will always initially run at the
minimum speed P1-02.
5 Previous speed,
terminal start
Following a stop and restart, the drive will return to the last keypad
setpoint speed used prior to stopping.
6 Current speed,
terminal start
Where the PACMotion VFD is congured for multiple speed references
(typically Hand / Auto control or Local / Remote control), when switched
to keypad mode by a digital input, the drive will continue to operate at
the last operating speed.
7 Preset speed 8,
terminal start
Following a stop and restart, the PACMotion VFD will always initially run
at Preset Speed 8 (P2-08).
P2-38 Mains loss reaction 0 3 0 -
0 Mains Loss Ride Through The PACMotion VFD will attempt to continue operating by recovering
energy from the load motor. Providing that the mains loss period is
short, and sufcient energy can be recovered before the drive control
electronics power off, the drive will automatically restart on return of
mains power.
1 Coast To Stop The PACMotion VFD will immediately disable the output to the motor,
allowing the load to coast or free wheel. When using this setting with
high inertia loads, the Spin Start function (P2-26) may need to be
enabled.
2 Fast Ramp To Stop The drive will ramp to stop at the rate programmed in the 2nd
deceleration time P2-25.
3 DC bus supply mode This mode is intended to be used when the drive is powered directly via
the +DC and –DC Bus connections. Refer to your Emerson Sales Partner
for further details.
P2-39 Parameter lock 0 1 0 -
0 Unlocked All parameters can be accessed and changed.
1 Locked Parameter values can be displayed, but cannot be changed.
P2-40 Extended menu access code 0 9999 101 -
Denes the access code which must be entered in P1-14 to access parameter groups above Group 1.