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Diagnostics Optimization CT MODBUS RTU Technical Data
406 E300 Design Guide
Issue Number: 1
Power Stage Identifier (L78) is used to show power stages which require changes to the drive user parameters (i.e. visibility, range of defaults). It
should be noted that this parameter does not identify the rating of the power stage.
Control Board Identifier (L79) identifies the main control board software and hardware in the form S.HHH, where S is the software as given in the
table below, and HHH is the control board hardware identifier.
L78 Power Stage Identifier
Mode Open-Loop, RFC-A, RFC-S
Minimum 0 Maximum 255
Default Units
Type 8 Bit Volatile Update Rate Power-up write
Display Format Standard Decimal Places 0
Coding RO, ND, NC, PT, BU
Power Stage Identifier (L78) Power Stage
0 Standard Unidrive M
1 Unidrive M with no braking IGBT
L79 Control Board Identifier
Mode Open-Loop, RFC-A, RFC-S
Minimum 0.000 Maximum 65.535
Default Units
Type 16 Bit Volatile Update Rate Power-up write
Display Format Standard Decimal Places 3
Coding RO, ND, NC, PT, BU
Control Board Identifier (L79) Control board
0 Standard Unidrive M
L80 Switching Frequency
Mode Open-Loop, RFC-A, RFC-S
Minimum 0 Maximum 6
Default Units kHz
Type 8 Bit Volatile Update Rate Background write
Display Format Standard Decimal Places 0
Coding RO, TE, ND, NC, PT
Value Text
02
13
24
36
48
512
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