Control Techniques Digitax ST Advanced User's Manual page 107

Parameter Keypad and
Parameter x.00
structure display
Threshold for reducing the
Drive size
switching frequency or Oht1 trip
DST1201
DST1202
DST1203
DST1204
DST1401
DST1402
DST1403
DST1404
DST1405
7.35 Drive thermal protection accumulator
Bit SP
Coding
Range 0 to 100 %
Update rate Background write
In addition to monitoring the IGBT junction temperatures the drive includes a thermal protection system to protect the other components within the
drive. This includes the effects of drive output current and DC bus ripple. The estimated temperature is displayed as a percentage of the trip level in
this parameter. If the parameter value reaches 100% an Oht3 trip is initiated.
7.36 Power circuit temperature 3
Bit SP
Coding
Range -128 to 127 °C
Update rate Background write
This parameter shows the temperature of the rectifier heatsink. See 7.04, 7.05 and 7.06 on page 101.
Digitax ST Advanced User Guide
Issue Number: 1
Parameter
description format
o
C
145
145
145
145
145
145
145
170
170
FI DE Txt VM DP ND
1 1
FI DE Txt VM DP ND
1
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Advanced parameter Serial comms
descriptions protocol
RA NC NV PT US RW BU
1 1
RA NC NV PT US RW BU
1 1
Electronic
Performance
nameplate
PS
1
PS
Menu 7
107