Digital Inputs 2-67
start the drive or change direction by using the terminal
block digital inputs programmed for both Run and
Direction control (i.e. Run/Fwd).
Important: Because an open condition (or unwired condition) commands
Forward, the terminal block seeks direction ownership as soon
as this input function is configured, which may happen at
power-up. In order for the terminal block to actually gain
ownership, the masks must be set up correctly (see above) and
no other device can currently have direction ownership. Once
the terminal block gains direction ownership, it will retain it
until shutdown, until the [Direction Mask] or [Logic Mask] bits
for the terminal block are cleared, or until this input function is
no longer configured
• Jog
Jog is essentially a non-latched “run/start” command. An open to closed
transition while drive is stopped causes drive to start (jog) in the current
direction. When the input opens while drive is running (jogging), the
drive will stop.
The drive will not jog while running or while the “Stop - Clear Faults”
input is open. Start has precedence.
The terminal block bit must be set in the [Jog Mask] and [Logic Mask]
parameters in order for the terminal block to cause the drive to jog using
this input function.
• Jog Forward, Jog Reverse
An open to closed transition on one input or both inputs while drive is
stopped will cause the drive to jog unless the “Stop - Clear Faults” input
function is configured and open. The table below describes the actions
taken by the drive in response to various states of these input functions.
If one of these input functions is configured and the other one isn’t, the
above description still applies, but the unconfigured input function
should be considered permanently open.
!
ATTENTION: If a normal drive start command is received while
the drive is jogging, the drive will switch from jog mode to run
mode. The drive will not stop, but may change speed and/or change
direction.
Jog Forward Jog Reverse Action
Open Open Drive will stop if already jogging, but can be started by other
means. Terminal block relinquishes direction ownership.
Open Closed Drive jogs in reverse direction. Terminal block takes direction
ownership.
Closed Open Drive jogs in forward direction. Terminal block takes direction
ownership.
Closed Closed Drive continues to jog in current direction, but terminal block
maintains direction ownership.
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