Rockwell Automation SA3100 Distributed Power System Drv Config,Program - Manual (Page 66)

3-28 SA3100 Drive Configuration and Programming
Drive Status Register (Continued) 200/1200
Torque / Frequency Reference Saturation Minus Bit 3
In Vector mode, the PMI sets the Torque
Reference Saturation Minus bit when the
system is requesting maximum negative
torque from the drive.
In Volts per Hertz mode, the Frequency
Reference Saturation Minus bit is set when
the current limit option has been selected,
and current feedback is at the negative limit.
Hex Value: 0008H
Sug. Var. Name: TRF_SM@ or
FRF_SM@
Access: Read only
UDC Error Code: N/A
LED: N/A
DC Bus Ready Bit 4
The PMI Regulator sets the DC Bus Ready
status bit in response to the BUS_ENA@
command when the following conditions are
detected: Hex Value: 0010H
Sug. Var. Name: BUS_RDY@
Access: Read only
UDC Error Code: N/A
LED: N/A
• DC bus voltage is greater than the undervoltage threshold value stored in local
tunable UVT_E0% and has reached a steady state
• feedback indicates that the pre-charge contactor has been commanded ON (i.e.,
to close).
Refer to the SA3100 Power Modules instruction manual (S-3058) for more
information about internal DC bus control.
Constant Power Region (Vector with Constant Power) Bit 5
If the drive has been configured to operate
in the Vector with Constant Power mode,
the PMI Regulator will set the Constant
Power Region bit when the drive is
operating in the constant power range (flux
weakening occurs). Hex Value: 0020H
Sug. Var. Name: PWR_RNG@
Access: Read only
UDC Error Code: N/A
LED: N/A
OK Synchronous Transfer* Bit 7
*Reserved for future use.
The PMI processor sets the OK
Synchronous Transfer bit when the drive’s
output voltage, period, and phase are
matched to the external source and
synchronous transfer may be done.
Hex Value: 0080H
Sug. Var. Name: SX_OK@
Access: Read only
UDC Error Code: N/A
LED: N/A