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Additive Feeders Chapter 5: Program Parameter Descriptions 37 of 55
Parameter 31 – Signal Input 1 (S1) Reference RPM
This is the reference RPM at which the Display Reference value should be displayed. In Rate
and Time Modes, this value represents the RPM of the encoder to which the Display
Reference corresponds. In Follower Modes, this value is not used.
Parameter 32 – Signal Input 1 (S1) Pulses per Revolution
This is the number of pulses per revolution for the signal input 1 (S1). The drive supports
pickups and encoders from 1 to 2048 pulses per revolution.
Parameter 33 – Signal Input 1 (S1) Deadband (Follower Mode Only)
When in Follower Mode, it is often desirable for the follower unit to continue to slowly
make-up the small pickup pulse differential between the master and follower's position. In
some applications, it is not necessary for the follower to continue to slowly seek the master's
exact pulse position when the master rate is at zero. In these cases, the Deadband parameter
can be set above zero to force the drive to stop driving the motor slowly and cause it to inhibit
until the master starts rotating again. At that point, the follower will automatically make-up
the pulse differential as it starts to rotate. The deadband is disabled by setting it to zero
seconds.
Parameter 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
drive 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 drive 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
drive 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 drive 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.