Emerson 2402 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 10
Commander SK Advanced User Guide 131
Issue Number: 9 www.controltechniques.com
This parameter is set if the drive output current is larger than 105% of motor rated current (Pr 5.07) and the overload accumulator is greater than 75%
to warn that if the motor current is not reduced the drive will trip on an Ixt overload. (If the rated current [Pr 5.07] is set to a level above the rated drive
current [Pr 11.32] the overload alarm is given when the current is higher than 100% of rated current.)
This flag is set if the IGBT junction temperature calculated from the drive thermal model is above 135°C, or if the heatsink temperature has made the
switching frequency decrease.
The following table indicates how the switching frequency is controlled:
The switching frequency and drive thermal model are updated once per second. Whenever the drive has reduced the switching frequency this alarm
is set, and the display will flash “hot”.
This flag is set if any of the other drive alarms are active, i.e. Drive temperature alarm, Overload alarm or Dynamic brake alarm.
Pr 10.19 = Pr 10.18 or Pr 10.17 or Pr 10.12
Contains the last 10 drive trips. Pr 10.20 is the most recent trip and Pr 10.29 the oldest. When a new trip occurs all the parameters move down one,
the current trip is put in 10.20 and the oldest trip is lost off the bottom of the log. Possible trips for Commander SK are shown in Table 10-17 on
page 132. All trips are stored including HF trips which are numbered from 20 to 30. (HF trips numbered from 1 to 19 are not stored in the trip log.) UU
trips are not stored unless the drive is running when the trip occurs. Any trip can be initiated by the actions described or by writing the relevant trip
number to Pr 10.38. If any trips shown as user trips are initiated the trip string is “txxx”, where xxx is the trip number.
notr indicates that no trip was detected.
10.17 Overload alarm
Coding
Bit SP FI DE Txt VM DP ND RA NC NV PT US RW BU PS
1111
Range OFF(0) or On(1)
Update rate Background
10.18 Drive temperature alarm
Coding
Bit SP FI DE Txt VM DP ND RA NC NV PT US RW BU PS
1111
Range OFF(0) or On(1)
Update rate Background
Drive condition Action
Heatsink > 95°C Trip drive
Heatsink > 92°C Reduce switching frequency to 3kHz
Heatsink > 88°C Reduce switching frequency to 6kHz
Heatsink > 85°C Reduce switching frequency to 12kHz
IGBT temp > 135°C Reduce switching frequency, if it is minimum trip drive
10.19 General drive alarm
Coding
Bit SP FI DE Txt VM DP ND RA NC NV PT US RW BU PS
1111
Range OFF(0) or On(1)
Update rate Background
10.20 Last trip {55}
10.21 Trip 1 {56}
10.22 Trip 2 {57}
10.23 Trip 3 {58}
10.24 Trip 4
10.25 Trip 5
10.26 Trip 6
10.27 Trip 7
10.28 Trip 8
10.29 Trip 9
Coding
Bit SP FI DE Txt VM DP ND RA NC NV PT US RW BU PS
111111
Range 0 to 232
Update rate On drive trip
NOTE

Emerson 2402 Specifications

General

Brand	Emerson
Model	2402
Category	Controller
Language	English