ETS-Lindgren 2090 Controller User Manual

Page 50

Model 2090 Parameter List

Model 2090 Multi-Device Controller

S1-S8

Refers to the eight possible preset speed settings for variable speed
devices. Each of these parameters can be set to any value from 0 to
255, with the resulting device speed being given approximately by
the formula:

Speed = N (MaxSpeed – MinSpeed) / 255 + MinSpeed

Where N is the speed setting from 0 to 255.

Each speed setting has its own individual overshoot compensation
value to provide proper overshoot correction for each speed selection.
However, the new ramp control provided by the 2090 and the
enhanced MB-IV motor base firmware will normally make overshoot
compensation unnecessary. The device will decelerate prior to
reaching the target value and creep in at the minimum speed.

NOTE: It is the nature of variable speed drives that there is a
minimum speed at which the motor will operate. All ETS-Lindgren
variable speed devices are factory adjusted to insure that the device
will be able to operate properly in this range under normal load
conditions. However, under heavy load or other unexpected
conditions, it may be necessary to increase the minimum speed
settings. Below this setting, the motor will not be able to cause
rotation, but will be active until a Motor Not Moving error (E002)
occurs. WARNING: Never operate any device in a stalled
condition. Doing so can cause damage to the drive unit and will
invalidate the warranty! Always insure that the minimum speed
setting specified in the S0-S8 parameters is above the minimum value
at which the device will operate under normal load.

These parameters are only visible for variable speed devices.

PCLr

Invokes the Parameter Clear menu option. Pressing the ENTER key
will display

SURE

in the display. Pressing ENTER a second time

will clear the parameters for this device to their factory defaults.
Pressing any other key will abort the operation and perform the
associated action.

WARRANTY

Revision G– P# 399199