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IronHorse GSDA-DP-D DC Drives Accessory User Manual – 1st Ed. Rev. A – 11/11/2019
Parameter
Parameter Name
Description
Signal Input #2 Setup Parameters
35
Signal Input 2 (S2) Input
Configuration
This Parameter determines the operating mode of signal input 2 (S2).
• Mode 1: Disabled (Follower Mode)
The S2 input is inactive. This is the required setting for Follower Mode.
• Mode 2: Emergency Stop When S2 High (Not Wired To Common)
When the S2 input is at an electrically high (+5V) state or allowed to float
disconnected, the GSDA-DP-D will enter emergency-stop mode. While in
this mode, the armature output will immediately be turned off. Once the S2
input returns to an electrically low state or wired to the unit’s common, the
output will become active.
• Mode 3: Emergency Stop When S2 Low (Wired To Common)
When the S2 input is at an electrically low state or wired to the unit’s
common, the GSDA-DP-D will enter emergency-stop mode. While in
this mode, the armature output will immediately be turned off. Once
the S2 input returns to an electrically high (+5V) state or allowed to float
disconnected, the output will become active.
• Mode 4: Inhibit When S2 High (Not Wired To Common)
When the S2 input is at an electrically high (+5V) state or allowed to float
disconnected, the GSDA-DP-D will enter inhibit mode. While inhibited,
the armature output will decrease according to the decel setting until zero
output is reached. Once the S2 input returns to an electrically low state or
is wired to the unit’s common, the output will start to accelerate toward the
previous running value.
• Mode 5: Inhibit When S2 Low (Wired To Common)
When the S2 input is at an electrically low state or wired to the unit’s
common, the GSDA-DP-D will enter inhibit mode. While inhibited, the
armature output will decrease according to the decel setting until zero
output is reached. Once the S2 input returns to an electrically high (+5V)
state or allowed to float disconnected, the output will start to accelerate
toward the previous running value.
• Mode 6: (JOG1) Jog When S2 High (Not Wired To Common)
When the S2 input is at an electrically high (+5V) state or allowed to float
disconnected, the GSDA-DP-D will enter JOG1 mode. While in JOG1 mode,
the speed will immediately change to the programmed JOG1 setpoint,
Parameter 36. The unit will start accelerating or decelerating toward the
JOG1 setting at the configured accel and decel rates. Once the S2 input
returns to an electrically low state or is wired to the unit’s common, the
output will start to accelerate or decelerate toward the previous running
value. In Follower Mode, the unit will operate as its own master. This allows
an application to jog by overriding a stopped master.
• Mode 7: (JOG1) Jog When S2 Low (Wired To Common)
When the S2 input is at an electrically low state or wired to the unit’s
common, the GSDA-DP-D will enter JOG1 mode. While in JOG1 mode,
the speed will immediately change to the programmed JOG1 setpoint,
Parameter 36. The unit will start accelerating or decelerating toward the
JOG1 setting at the configured accel and decel rates. Once the S2 input
returns to an electrically high (+5V) state or allowed to float disconnected,
the output will start to accelerate or decelerate toward the previous running
value. In Follower Mode, the unit will operate as its own master. This allows
an application to jog by overriding a stopped master.
36
Signal Input 2 (S2) Setpoint for JOG1
Function
When the S2 configuration, Parameter 35, is set to one of the JOG1 modes, this
Parameter defines the JOG1 setpoint in engineering units. If the GSDA-DP-D
operating mode is set to Follower Mode, then this Parameter is set in RPM
units. This allows a follower control to be jogged when the master is stopped.
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 GSDA-DP-D supports
pickups and encoders from 1 to 9999 pulses per revolution (PPR).
38
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 GSDA-DP-D 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.
