164 Rockwell Automation Publication 750-PM001N-EN-P - February 2017
Chapter 3 Drive Port 0 Parameters
DIAGNOSTICS
Fault/Alarm Info
960 Alarm Status B
Alarm Status B
RO 32-bit
Integer
Indicates the occurrence of conditions that have been configured as alarms.
Bit 0 “IGBT OT” – Indicates the transistor (IGBT) junction temperature reached the alarm level, which is 10 °C (50 °F) below the maximum (fault level) junction
temperature.
Bit 1 Heatsink OT” – Indicates the heatsink temperature reached the alarm level, which is 10 °C (50 °F) below the maximum (fault level) heatsink temperature.
Bit 2 “Waking” – The Sleep /Wake function is in the Waking condition.
Bit 3 “StartOnPwrUp” – The Start on powerup feature is active.
Bit 4 “Drive OL” – Indicates overload condition has reached the alarm level and P940 [Drive OL Count] has reached 50%.
Bit 5 “CurLmt Reduc” – Indicates the transistor (IGBT) junction temperature reached the level of current limit fold back, which is 5 °C (41 °F) below the maximum
(fault level) junction temperature.
Bit 6 “PWMFrq Reduc” – Indicates the transistor (IGBT) junction temperature reached the level of PWM frequency fold back, which is 10 °C (50 °F) below the
maximum (fault level) junction temperature. Or the instantaneous rising of junction temperature exceeded 60 °C (140 °F).
Bit 7 “Profile Actv” – Indicates the profile function is active, P1213 [Profile Command] Bit 12 “Prof Run Alarm” is set.
Bit 8 “Homing Actv” – Indicates the homing function is active, P731 [Homing Control] Bit 5 “Homing Alarm” is set.
Bit 9 “Not Home Set” – Indicates the profile function has executed without first executing the homing function, P1213 [Profile Command] Bit 11
“HomeNotSetAlarm” is set.
Bit 10 “Gnd Warning” – The value set in P467 [Ground Warn Lvl] has been exceeded.
Bit 11 “OW Level” – The value set in P1171 [TorqAlarm Level] has been reached.
Bit 12 “OW Alarm TO” – The value set in P1172 [TorqAlm Timeout] has been reached.
Bit 13 “PumpOff Alrm” – The pump off condition is active.
Bit 14 “N-1 Operate” – Indicates the parallel drive is in operation mode.
Bit 15 “DB Res OT” – Indicates the dynamic brake resistor has exceeded its maximum operating temperature.
File
Group
No. Display Name
Full Name
Description
Values
Read-Write
Data Type
Options
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
DB Res OT
N-1 Operate
(1)
(1) 755 Frame 8 drives and larger only.
PumpOff Alrm
(2)
OW Alarm TO
(2)
OW Level
(2)
(2) 753 drives only.
Gnd Warning
Not Home Set
(3)
Homing Actv
Profile Actv
(3)
(3) 755 drives only.
PWMFrq Reduc
CurLmt Reduc
Drive OL
StartOnPwrUp
Waking
Heatsink OT
IGBT OT
Default00000000000000000000000000000000
Bit 313029282726252423222120191817161514131211109876543210
0 = Condition False
1 = Condition True