Page 37
IronHorse GSD8 DC Drives User Manual – 1st Ed. Rev. A – 10/15/2019
Parameter Parameter Name
Description
GSD8-
240-5C
All other
GSD8
drives
37
Signal Input 2 (S2)
(“Leader”) Pulses
per Revolution (for
Follower Mode Only)
When in Follower Mode, this is the number of pulses per revolution for
the signal input 2 (S2) used as the “Leader” input. The GSD8 supports
pickups and encoders from 1 to 9999 pulses per revolution (PPR).
38
Front Panel Double-
Click Mode
When this parameter is set to a value of 1, Parameter 35, (input S2) and/
or Parameter 40, (input UIN1) in Mode 4 or 5 (Inhibit), have no effect;
instead, “clicking” the ENTER Button twice in rapid succession (“Double-
Clicking”) will TOGGLE the GSD8-240-5C drive in and out of “Inhibit”
mode. When in DoubleClick mode, the Motor will decelerate to a stop,
and the Display will show 4 dashes “----” DoubleClicking again will cause
the motor to accelerate up to the Target speed/time, and the Display to
return to its normal condition. When set to a value of Zero, the Inhibit
function is controlled exclusively by the signal level on the S2 and/
or UIN1 Input(s), and the setting of Parameters 35 and/or 40, and the
“DoubleClick” function will have no effect. Note also that the DoubleClick
Inhibit is only enabled in “Run” mode.
Signal Input 2 (S2)
(“Leader”) Stopped
Timeout (for Follower
Mode Only)
When the Target Speed (percentage) is above zero, this Parameter
determines the maximum time in units of 0.1 seconds that can elapse
after the last S2 (Leader) pickup pulse before the GSD8 considers the
Leader as “stopped”. Setting this value too low may result in unstable
low-speed “following”. Setting it too high may result in Follower “run-
on”. A value of zero defeats this timeout.
39
Disable Signal Input
2 (S2) in Manual
Mode
When setting this parameter to a value of 1, the S2 will be disabled when
the unit is put into manual mode. If the value is set to 0 then the S2 will
work in both manual and auto modes.
