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IronHorse GSD8 DC Drives User Manual – 1st Ed. Rev. A – 10/15/2019
Parameter Parameter Name
Description
GSD8-
240-5C
All other
GSD8
drives
11
Display Intensity
This Parameter adjusts the intensity of the LED display digits in the front
panel of the unit. The values of 0 – 31 correspond to a gradual change
from very dim to very bright. This is often useful when the GSD8 is used
in the same panel as other pieces of equipment with LED displays and a
uniform display brightness is desired. Simply adjust the GSD8 to match
its surroundings.
12
Display Mode
This Parameter selects what the GSD8 will show on its display during
Run Mode. Note that it can “toggle” between whatever the Display
Mode is set to and its “opposite” by briefly pressing and releasing the
ENTER button (does not apply to GSD8-240-5C). For example, if this
Parameter is set to 1 (Target Speed/Time), pressing the ENTER button
will briefly show the Actual (Tach) Display (and illuminate the “Tach” LED
Annunciator). Conversely, if this Parameter is set to 2 or 3 (Main Tach or
Leader Tach, respectively), pressing the ENTER button will briefly show
the Target Speed/Time.
The following Display Modes are available for the GSD8:
• Mode 1 – Target Speed/Time Display
In Rate Mode, the GSD8 displays the Target Speed in user-defined rate
Engineering Units such as RPM, Gallons per Hour, or Feet per Second.
In Time Mode, the GSD8 displays the Target Time in time units using
the format AA:BB. In Follower Mode, the GSD8 displays the Target
Speed in percentage units, where 1000 equals 100.0 percent of the
Master rate.
• Mode 2 – S1 (Main Pickup) Actual Speed (Tach) Display
In Rate Mode, the GSD8 displays the Actual Speed in user-defined rate
Engineering Units such as RPM, Gallons per Hour, or Feet per Second.
In Time Mode, the GSD8 displays the Actual Time in time units using
the format AA:BB. In Follower Mode, the GSD8 displays the Actual
Speed in percentage units, where 1000 equals 100.0 percent of the
Master rate.
• Mode 3 – S2 (Leader) Actual Speed (Tach) Display
Mainly useful for diagnosing and setup of Master-Follower
applications, selecting this Mode shows the Leader Speed (on the S2
Input) in RPM Units (only).
13
Decimal Point (DP)
Position (used in
Rate and Follower
Modes Only)
This selects the format of the display with respect to the decimal point’s
position. This Parameter does not effect the value entry for other
Parameters. For example, if the user desires to display 10.00 at 300RPM,
then Parameter 30 would be set to 1000, Parameter 31 would be set to
300, and Parameter 13 would be set to 2.
• Mode 0: Fixed XXXX
• Mode 1: Fixed X.XXX
• Mode 2: Fixed XX.XX
• Mode 3: Fixed XXX.X
• Mode 4: Fixed XXXX.
14
Keypad Mode
This Parameter selects the operating mode of the front-panel push
buttons. In some applications, increasing or decreasing the scroll
rate provides the user more controllability when entering settings.
Parameters 14 and 15 affect only the Up and Down buttons when the
user interface is in Running Mode. These settings also apply to remote
Up / Down buttons which are attached via the -1 option board.
• Mode 1: Linear, Constant Rate
In linear mode, pressing and holding the Up or Down buttons will
cause the display to continuously change value in the requested
direction until either the Display Minimum or Display Maximum is
reached. The displayed value will scroll at a constant rate which is
specified using Parameter 15.
• Mode 2: Non-linear, Accelerating Rate
In non-linear mode, pressing and holding the Up or Down buttons
will cause the display to continuously change value in the requested
direction until either the Display Minimum or Display Maximum is
reached. The displayed value will initially scroll at a slow rate and
increase in speed until the maximum scroll rate is achieved. The initial
scroll rate is specified using Parameter 15.
15
Keypad Scroll Delay
This Parameter sets the scroll speed for the front-panel push buttons.
The function of this Parameter varies slightly depending on the Keypad
Mode. See Parameter 14 for more details.
