Rockwell Automation MV SMC Flex Motor Controller (for Series K or later) - Manual (Page 29)

Rockwell Automation Publication 1560E-UM051F-EN-P - June 2013 19
Product Overview Chapter 1
Network inputs can be obtained through proper programming of Option Input
#1 and Option Input #2. (refer to
page 159 and page 163 for available options.)
MV applications have special requirements for isolation and bypass contactors
(or circuit breakers). For Firmware up to and including 5.001 the following
issues must be considered:
1. AUX1 must be used to control the fully-rated bypass contactor.
Parameters #107 will not be displayed, and defaults to “Ext Bypass”. The
functionality of AUX1 is modified for MV operation and behaves similar
to, but different from, the “Ext Bypass” or “Up-To-Speed” function of any
other AUX relay.
2. AUX4 must be used to control the isolation contactor. Parameter #109
must be set to “Normal”. The functionality of AUX4 is modified for MV
operation and behaves similar to, but different from, the “Normal”
function of any other AUX relay.
For Firmware 6.001 and later, the definitions of all AUX relays will be the same,
and for MV applications will perform with the modified MV functionality.
1. AUX1 should be used for bypass contactor control, and must be set for
“Ext Bypass”.
2. AUX4 should be used for isolation contactor control, and must be set for
“Normal”.
Control Options The MV SMC Flex controller offers the control options described below.
Pump Control Option
This option reduces surges during the starting and stopping of a centrifugal pump
by smoothly accelerating and decelerating the motor. The microprocessor
analyzes the motor variables and generates commands that control the motor and
reduce the possibility of surges occurring in the system.
The motor current will vary during the acceleration period, and may be near the
motor rated starting current. The pump algorithm does not limit starting current
since full voltage is needed to reach full speed with a loaded motor.
The starting time is programmable from 0-30 seconds, and the stopping time is
programmable from 0-120 seconds.
Kickstart is available with this option.
IMPORTANT The options listed in this section are mutually exclusive and must be specified
when ordering. An existing controller may be upgraded to another control
option by replacing the control module and possibly other components.
Consult your nearest Rockwell Automation sales office.