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106 Rockwell Automation Publication 1560F-UM001A-EN-P - June 2019

Chapter 4 Programming

Set up Start Profile 2 by using the Dual Ramp parameter set. You can use the

HIM to access Dual Ramp from the <Port 00> DEV PARAM folder (see

Table 11 on page 96

). Use the parameters in Ta b le 18 to program a Dual Ramp

adjustment.

Motor Protection

The Motor Protection Group (see Table 21 on page 110) is used to program

motor and starter protection functions. The Motor Protection Group is accessed

from the HIM using the Port 00 DEV PARAM folder under the File-Group,

File: Motor Protection selection sequence. By using this file group, the SMC-50

control module lets you individually enable, disable, or restart the motor and

starter Faults and Alarms. Each of the 21 different Motor/Starter Protection

Setup groups (for example, Overload, Underload, Jam, Stall, Voltage Unbal, etc.)

has at least one selection for Fault Enable, Alarm Enable, and Restart Enable.

Table 18 - Dual Ramp Start with Stop Parameters

Parameter Name Description Options Default Value

Starting Mode 2 Select the desired starting mode for Profile 2 Soft Start, Full Voltage, Linear

Speed, Torque Start, Current

Limit, Pump Start.

(3)(4)

—

Ramp Time 2 Programs the Profile 2 time period that the controller will ramp the output voltage to

full voltage and motor speed from the programmed Initial Torque value.

0…1000 s 10 s

Current Limit Level 2 The Profile 2 setting limits the current supplied in the motor throughout the Soft

Start, Linear Speed, or Torque Ramp cycle.

(1)

50...600% FLC 350% FLC

Initial Torque 2 Initial Torque 2 The initial reduced output voltage (torque) level for the Profile 2

Voltage Ramp to the motor is established and adjusted with this parameter. The

torque level at which the ramp begins for Profile 2. NOTE: Not used for Torque Ramp.

0…90% LRT 70% LRT

Starting Torque 2 Starting Torque 2 For a Torque Ramp Start, the programmed initial or start torque

point for Profile 2. This parameter is not used for other starting modes.

0…300% RMT 100% RMT

Max Torque 2 For Start Profile 2, the programmed torque end point for a Torque Ramp start. This

parameter is not used for other starting modes.

0…300% RMT 250% RMT

Kickstart Time 2 For Start Profile 2, if required, a boost of current (torque) is provided to motor for this

programmed time period.

(2)

0…2 s 0 s

Kickstart Level 2 For Start Profile 2, if required, this parameter programs the amount of current (torque)

applied to the motor during Kickstart time.

(2)

750, 900, 1000, 1200, 1500,

1800, 3500, 3600 rpm

1800 rpm

(1) Enter a value to limit the current but not low enough to inhibit the start cycle.

(2) Available for Soft Start, Current Limit, and Torque Start modes. Set to zero to disable Kickstart.

(3) Torque Ramp and Linear Speed Starting modes require you to perform a Motor Tuning Cycle. The SMC-50 control module does this automatically the first time the motor is run. You can also force this

manually by setting the Force Tuning, Parameter 194, to TRUE (=1), which is accessed from the File Setup, Group Adv. Tuning or by pressing and holding the SMC-50 controller’s Reset button for 10

seconds with the motor stopped.

(4) You can also program a start delay time and will apply to both Start Profile 1 and Start Profile 2. The Start Delay parameter can be accessed from the Group Starting selection (see Ta bl e 1 1

IMPORTANT The majority of parameters have a Fault and an Alarm setting.