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S3 PROCESS
NOTE
5–26
•
IL1 SWITCH TYPE: This setpoint allows the user to configure the type of switch used
for the programmable switch inputs as normally open (N.O.) or normally closed (N.C.).
When set to N.O. (factory default), if the switch input is closed, it is in the healthy
position; if the switch is open, it is in the unhealthy position. When set to N.C., if the
switch input is open, it is in the healthy position; if it is closed, it is in the unhealthy
position.
•
LOCAL ISOLATOR: The local isolator switch input can be enabled or disabled using this
setpoint. When set to "ENABLE", a local isolator trip will occur whenever the local
isolator switch input is open. The trip will automatically reset when the switch input is
closed.
•
AUTO PERMISSIVE INDICATION: This setpoint determines whether the Auto or Manual
LED is illuminated when in the auto permissive mode. This allows the Auto LED to be
used for auto permissive and serial control, or just for serial control.
•
AUTO MODE: This setpoint can be configured to either 'SERIAL' or 'HARD-WIRED'.
When in the 'SERIAL' mode and the 'AUTO' button is pressed with 'AUTO PERMISSIVE'
switch unhealthy, the MM3 will execute start commands from the RS485 serial link
only. When in the 'HARD-WIRED' mode and the 'AUTO' key is pressed, the MM3 will
execute start commands from the 'AUTO START A' and 'AUTO START B' switch inputs
only.
The 'AUTO PERMISSIVE' switch input must be healthy in order to do auto starts. This
setpoint allows the user to change the control mode from MANUAL to HARD-WIRED AUTO
via the AUTO/MANUAL buttons instead of having it done automatically when the Auto
Permissive switch input is put into the healthy position.
•
SERIAL PERMISSIVE: This setpoint allows serial commands to block all start
commands (serial or manual) until the unblock command is received. This setpoint
must be enabled before serial start block commands are executed. When set to
"DISABLE", any start blocks in effect are automatically unblocked.
•
START BLOCK ALARM: This setpoint can be used to indicate when a start was
attempted while a block was in effect.
•
COMMAND MODE CHANGE WHEN RUNNING: This setpoint allows the active
command mode to be changed while the motor is running. When set to "DISABLE", the
motor must first be stopped before the command mode can be changed (auto or
manual).
•
SWITCH INPUT MONITOR: When assigned, the application of the switch input monitor
feature requires an input to be permanently wired closed via a hardware jumper.
When the Switch Input Monitor feature is assigned to an Interlock, the MM2
continually reads the switches as it normally would and then checks the switch
monitor input to check if it is still healthy. If so, the MM2 updates the switch data with
the new switch read and performs any necessary functions. If not, the MM2 assumes
the unit is in an undervoltage situation and disregards the switch data until the Switch
Input Monitor becomes healthy again. This feature improves the reliability of the
Undervoltage Restart element to successfully restart the motor under very specific
voltage dips and durations (approximately 56 to 62% of nominal 100 ms duration).
•
BYPASS CONTACT: This function is used as a status feedback input for the soft starter.
See Section 9.13: SOFT STARTER on page 9–37 for functionality.
CHAPTER 5: SETPOINTS
MM3 MOTOR MANAGER 3 – INSTRUCTION MANUAL
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