Emerson SP5401 - T5;6 Analogue Input 1 Current Loop Loss; T5;6 Analogue Input 1 Offset; T7 Analogue Input 2 Current Loop Loss; T9 Analogue Output 1 Control

Safety
Information
Introduction
Product
information
System
design
Mechanical
installation
Electrical
installation
Getting
started
Optimisation
Parameters
Techn i cal
data
Component
sizing
Diagnostics
Unidrive SP Regen Installation Guide 129
Issue Number: 2 www.controltechniques.com
If an analogue input is used with 4-20mA or 20-4mA current loop modes the respective bit (Pr 7.28 - analogue input 2 and Pr 7.29 -3) is set to one if
the current falls below 3mA. If the current is above 3mA with these modes or another mode is selected the respective bit is set to zero.
An offset can be added to each analogue input with a range from -100% to 100%. If the sum of the input and the offset exceeds ±100% the results is
limited to ±100%.
This offers a simple control of Pr 7.19 to change the source for the analogue output for use from Menu 0. When this parameter is set to 0 or 1 the
drive constantly writes Pr 5.01 or Pr 4.02 to Pr 7.19 respectively.
The IGBT junction temperature is calculated using Stack 1 temperature (Pr 7.04) and a thermal model of the drive power stage. The resulting
temperature is displayed in this parameter. The calculated IGBT junction temperature is used to modify the drive switching frequency to reduce losses
if the devices become too hot (see Pr 5.18 on page 109).
7.28 T5/6 analogue input 1 current loop loss
7.29 T7 analogue input 2 current loop loss
Drive mode Regen
Coding
Bit SP FI DE Txt VM DP ND RA NC NV PT US RW BU PS
1111
Update rate Background
7.30 T5/6 analogue input 1 offset
Drive mode Regen
Coding
Bit SP FI DE Txt VM DP ND RA NC NV PT US RW BU PS
211
Range Regen ±100.00 %
Default Regen 0.00
Update rate Background
7.31 T7 analogue input 2 offset
7.32 T8 analogue input 3 offset
Drive mode Regen
Coding
Bit SP FI DE Txt VM DP ND RA NC NV PT US RW BU PS
111
Range Regen ±100.0 %
Default Regen 0.0
Update rate Background
7.33 T9 analogue output 1 control
Drive mode Regen
Coding
Bit SP FI DE Txt VM DP ND RA NC NV PT US RW BU PS
1 111
Range Regen 0 to 2
Default Regen 2
Update rate Background
Parameter value Parameter string Action
0 Fr Write Pr 7.19 = Pr 5.01
1 Ld Write Pr 7.19 = Pr 4.02
2 AdV No action
7.34 IGBT junction temperature
Drive mode Regen
Coding
Bit SP FI DE Txt VM DP ND RA NC NV PT US RW BU PS
111
Range Regen ±200 °C
Update rate Background