Page 36
IronHorse GSD8 DC Drives User Manual – 1st Ed. Rev. A – 10/15/2019
Parameter Parameter Name
Description
GSD8-
240-5C
All other
GSD8
drives
34
Signal Input 1
(S1) Running Stall
Timeout
When the Target Speed is above zero RPM, this Parameter determines
the maximum time in units of 0.1 Seconds that can elapse between S1
pickup pulses before the GSD8 considers itself in a “Stall” Condition. It is
not advisable to set this lower than approximately 10 seconds (a value of
100), or it may be difficult to achieve startup in a low-speed application.
Also note that the S1 Pulses Per Revolution (PPR) must be taken into
account when determining the proper setting for this timeout. A value
of zero defeats this timeout. (Note: This parameter will only work if the
alarm is set for stall on any of the parameters 50, 51, 52, 70, 71, or 72.)
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 GSD8 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 GSD8 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 GSD8 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 GSD8 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 GSD8 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 GSD8 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 GSD8 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.
