Emerson 3402 User Manual

Introduction
Parameter
x.00
Parameter
description format
Keypad and
display
Serial
communications
CT Modbus
RTU
PLC Ladder
programming
CTSoft Menu 0
Advanced parameter
descriptions
Menu 4
Commander SK Advanced User Guide 71
Issue Number: 9 www.controltechniques.com
The maximum for Pr 4.08 and Pr 4.20 is defined by this parameter.
0: OFF Low speed thermal protection mode disabled
1: On Low speed thermal protection mode enabled
See Pr 4.16 on page 68 for details.
Pr 4.26 shows the torque producing current (Pr 4.02) as a percentage of the active torque producing current, but with an additional adjustment above
base speed so that this parameter shows percentage torque. Below base speed, Pr 4.26 is equal to Pr 4.20. Above base speed the percentage
torque producing current (Pr 4.20) is adjusted as follows:
Pr 4.26 = Pr 4.20 x motor rated frequency (Pr 5.06) /post ramp reference (Pr 2.01)
Modification of this parameter may be required when using the drive with a high- speed motor, which inherently has low inductance.
This parameter should only be set to On if OI.AC trips are occurring when the drive is carrying out a mains loss stop or DC injection brake with a high
speed motor.
Only available with drive firmware V01.08.04 onwards (size 2 to 6).
4.24 User current maximum scaling
Coding
Bit SP FI DE Txt VM DP ND RA NC NV PT US RW BU PS
11 1 111
Range 0.0 to TORQUE_PROD_CURRENT_MAX%
Default 165.0
Update rate Background
4.25 Low speed thermal protection mode
Coding
Bit SP FI DE Txt VM DP ND RA NC NV PT US RW BU PS
111
Range OFF(0) or On(1)
Default OFF(0)
Update rate Background
4.26 Percentage torque
Coding
Bit SP FI DE Txt VM DP ND RA NC NV PT US RW BU PS
1 111 1 1
Range ±USER_CURRENT_MAX %
Update rate Background
4.27 Reduce internal current loop response
Coding
Bit SP FI DE Txt VM DP ND RA NC NV PT US RW BU PS
111
Range OFF (0) or On (1)
Default OFF (0)
Update rate Background
NOTE

Emerson 3402 Specifications

General

Brand	Emerson
Model	3402
Category	Controller
Language	English