Parameter Section - Emerson Unidrive M700 User Manual

4

Parameter section

For Low voltage DC mode there are a number of parameters within the drive which support
configuration of the drive, these include settings for the Low voltage DC supply, UPS and Brake
control. The following section details the user parameters within the drive which are used for
configuration of the Low voltage DC mode.
Parameter Description
Active supply
Pr 06.044
Pr 06.072 User supply select
Pr 06.065 Standard under voltage threshold
Pr 06.066 Low under voltage threshold
Pr 06.067 Low under voltage threshold select
Pr 06.068 Low voltage supply mode enable
Pr 06.069 Under voltage system contactor output
Pr 06.070 Under voltage system contactor closed
Pr 06.071 Slow rectifier charge rate enable
Pr 06.048 Phase loss input detection level
Pr 06.073 Braking IGBT lower threshold
Pr 06.074 Braking IGBT upper threshold
Pr 06.075 Low voltage braking IGBT threshold
Pr 06.076 Low voltage braking IGBT threshold select
Parameter
Short description
Minimum
Default
Type
Display Format
Coding
If Pr 06.068 - Low Voltage Supply Mode Enable = Off (0) then Pr 06.044 - Active Supply = Off 0).
If Pr 06.068 - Low Voltage Supply Mode Enable = On (1) then Pr 06.044 - Active Supply = Off (0)
when the DC Bus voltage is above the Pr 06.065 - Standard Under Voltage Threshold otherwise
Pr 06.044 - Active Supply = On (1).
In Regen mode Pr 06.044 - Active Supply is always = Off (0).
Parameter
Short description
Minimum
Default
Type
Display Format
Coding
The power for the drive control system is either taken from the external user 24 Vdc supply or the AC
supply (i.e. derived from the power circuit DC Bus). For drive frame sizes 7 and above a diode OR
system is used to select the required power supply, therefore this is done automatically in hardware.
Note the external user 24 Vdc supply connection is made to the Power Stage drive frame sizes 6 and
larger and Control PCB with drive frame sizes 3 and larger.
If Pr 06.072 - User Supply Select = Off (0, Pr 06.068 - Low Voltage Supply Mode Enable = Off (0),
P a g e | 23
Pr 06.044 Active Supply
Indicates when the low voltage DC supply mode is enabled and the DC Bus
voltage is below the Pr 06.065 - Standard Under Voltage Threshold
Off (0)
n/a
1 Bit Volatile
Standard
RO, ND, NC, PT
Pr 06.072 User Supply Select
Set = On (1) to select supply from external user 24 Vdc supply
Off (0)
Off (0)
1 Bit User Save
Standard
RW
Notes
Power supply status
External user 24 Vdc supply
Low voltage DC operation using Low under
voltage threshold select
Full Low voltage DC operation with internal
under voltage threshold select and output
contactor control
Slow rectifier charge to preserve battery
lifetime during power up
Disable input phase loss for operation with
single phase UPS
Brake control voltage setup and low
voltage braking select.
Maximum
Units
Update Rate
Decimal Places
Maximum
Units
Update Rate
Decimal Places
On (1)
Off (0) or On (1)
Background write
0
On (1)
Off (0) or On (1)
Background read
0