Emerson E300 Series - Page 362

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362 E300 Design Guide
Issue Number: 1
See Monitor Temperature Select 1 (J74).
See Monitor Temperature Select 1 (J74).
Inverter Temperature (J77) shows the estimated junction temperature of the hottest power device within the drive inverter. If this temperature exceeds
the switch down threshold defined for the power stage the switching frequency is reduced.
Percentage Of DC Link Thermal Trip Level (J78) gives the percentage of the maximum allowed temperature as estimated by the thermal model of the
d.c. link components.
Source xx y zz
Control system 00 0 01: Control board thermistor 1
Control system 00 0 02: Control board thermistor 2
Control system 00 0 03: I/O board thermistor
Control system 00 1 00: Inverter thermal model
Control system 00 3 00: Braking IGBT thermal model
Power system 01 0 zz: Thermistor location defined by zz in the power system
Power system 01 Rectifier number zz: Thermistor location defined by zz in the rectifier
J75 Monitor Temperature Select 2
Mode Open-Loop, RFC-A, RFC-S
Minimum 0 Maximum 1999
Default 1002 Units
Type 16 Bit User Save Update Rate Background read
Display Format Standard Decimal Places 0
Coding RW
J76 Monitor Temperature Select 3
Mode Open-Loop, RFC-A, RFC-S
Minimum 0 Maximum 1999
Default 1 Units
Type 16 Bit User Save Update Rate Background read
Display Format Standard Decimal Places 0
Coding RW
J77 Inverter Temperature
Mode Open-Loop, RFC-A, RFC-S
Minimum -250 Maximum 250
Default Units °C
Type 16 Bit Volatile Update Rate Background write
Display Format Standard Decimal Places 0
Coding RO, ND, NC, PT
J78 Percentage Of DC Link Thermal Trip Level
Mode Open-Loop, RFC-A, RFC-S
Minimum 0 Maximum 100
Default Units %
Type 8 Bit Volatile Update Rate Background write
Display Format Standard Decimal Places 0
Coding RO, ND, NC, PT