Rockwell Automation 7763 Medium Voltage OneGear SMC Flex Motor Controller (10-15 kV) - Manual (Page 134)

134 Rockwell Automation Publication 7760-UM001D-EN-P - October 2014
Appendix B SMC Flex Module Parameter Information
Linear List
High Eff Brake
(SMB)
38
% of
Stopping
Time
0…99 0
This parameter is used to extend the SMB braking
time by a percentage of the typical stopping time.
The need to adjust this parameter can occur when
braking is applied to high efficiency motors and
relates to the counter EMF produced by these
motors. This setting should never really exceed
50%. Nuisance overload faults will likely occur if set
incorrectly.
Preset SS/
Accu-Stop
Slow
Speed Sel 39 SS Low SS High SS High
When this option is used, this parameter provides
the user the ability to select between the “Low” and
“High” settings for both the Preset Slow Speed and
Accu-Stop control options.
Preset SS/
Accu-Stop
Slow Speed Dir 40 SS FWD SS REV SS FWD
Provides the user the ability to program the motor’s
direction of rotation. Note that with the Preset Slow
Speed option, the controller has the capability to
operate the motor in the reverse direction during
slow speed operation without the use of a reversing
contactor.
Preset SS/
Accu-Stop
Slow Accel Cur 41 %FLC 0…450 0
Provides the user the ability to program the current
to slow speed operation for both the Preset Slow
Speed and Accu-Stop control options. This setting is
typically load dependent.
Preset SS/
Accu-Stop
Slow Running Cur 42 % FLC 0…450 0
Provides the user the ability to program the
operating current of slow speed operation for both
the Preset Slow Speed and Accu-Stop control
options. This setting is typically load dependent.
Accu-Stop Stopping Current 43 %FLC 0…400 0
Provides adjustment capability for the braking
intensity from slow speed operation to the
“stopped” condition for the Accu-Stop control
option.
Basic Set Up/
Overload
Overload Class 44
Disable
Class 10
Class 15
Class 20
Class 30
Class 10
Allows the user to select the time-to-trip for the
built-in overload. This selection is based on the type
of motor being used and the application it is being
applied to.
Basic Set Up/
Overload
Service Factor 45 0.01…1.99 1.15
This motor nameplate value is used to determine
the ultimate overload trip current.
Basic Set Up/
Overload
Motor FLC 46 A 1.0…2200.0 1.0
Sets the base current for use with all the current
based protection features (jam, over / under load,
motor overload). The motor nameplate FLA is to be
used.
Basic Set Up/
Overload
Overload Reset 47 Manual Auto Manual
Allows the user to select between an auto and
manual reset mode for all Overload faults.
Linear List OL Shunt Time 48 Sec 0…999 0
This parameter prevents the overload from
accumulating or incrementing the Motor Thermal
Usage (%MTU) during the programmed “shunt”
time. This function is allowable under some
electrical codes for loads which have long
acceleration times (i.e. High inertia). As a general
rule of thumb, this time should never exceed the
programmed start time. Setting this parameter
longer than necessary can result in motor
overheating that is not being accounted for in the
thermal model.
Linear List
OL Trip Enable/
Disable
49
0= Disable
1= Enable
Enable
This parameter disables the overload from tripping
during slow speed, pump stopping, and braking
maneuvers. Motor Thermal Usage (%MTU)
continues to increment during these maneuvers.
Setting this parameter to disable can result in motor
overheating or potential damage.
Group Parameter
Name Parameter
Number Units Min./ Max. Default Settings Parameter Description User Settings