Rockwell Automation SB3000 AC Power Modules - Manual (Page 46)

4-8 SB3000 Power Modules (Rittal)
4.3.2.1 DC Bus Overvoltage Warning
The DC Bus Overvoltage bit (bit 0) is set in the Warning register (203/1203) if the DC
bus voltage exceeds the overvoltage threshold value stored in local tunable
OVT_E0%.
4.3.2.2 DC Bus Undervoltage Warning
The DC Bus Undervoltage bit (bit 1) is set in the Warning register (203/1203) if the DC
bus voltage drops below the under voltage threshold value stored in local tunable
UVT_E0%.
Table 4.4 – SB3000 Warning Register 203 /1203
Bit
Suggested
Variable
Name Description Summary
0 WRN_OV@ The DC Bus Overvoltage fault bit is set if the DC bus voltage exceeds the
overvoltage threshold value stored in local tunable OVT_E0%.
1 WRN_UV@ The DC Bus Under Voltage bit is set if the DC bus voltage drops below the under
voltage threshold value stored in local tunable UVT_E0%.
2 WRN_GND@ The Ground Current Warning bit is set if the ground current exceeds the ground
fault current level stored in local tunable GIT_EI%.
3 WRN_PL@ The Phase Lost Warning bit is set if a phase loss occurs in the AC line.
4 WRN_RIL@ The Reference in Limit Warning bit is set if the UDC reference value (register
102/1102) is less than the minimum value or greater than the maximum value
allowed. In the Bridge Test mode, this bit is used to indicate an illegal test code.
6 WRN_SHR@ The Load Sharing Warning bit is set if a current sharing problem develops
between parallel SB3000 Power Modules.
7 WRN_OT@ The Overtemperature Warning bit is set if the warning level thermal switch (78° C
(172.4
o
F)) in the SB3000 Power Module opens.
8 WRN_BGD@ The Bad Gain Warning bit is set when a tunable variable is changed to an illegal
value when the UDC task is running.
9 WRN_OL@ The Power Module Overload Warning bit is set if the continuous current rating of
the SB3000 Power Module is exceeded for
approximately five minutes and does not decrease and maintain the continuous
current rating for at least 45 minutes.
10 WRN_PWR@ The Power Lost Warning bit is set if the power dip ride-through feature of the
SB3000 Power Module has been enabled.
12 WRN_FAN@ The PMI Fan Loss Warning bit is set if there is no airflow detected through the
PMI rack.
13 WRN_RAL@ The Rail Communication Warning bit is set if a rail communication problem
occurs and is logged in registers 4, 10, 16, or 22.
14 WRN_CLK@ The CCLK Not Synchronized Warning bit is set if the CCLK counters in the PMI
Processor and UDC module are
momentarily unsynchronized.
15 WRN_COM@ The PMI Communication Warning bit is set if a fiber-optic communication error
occurs between the PMI Processor and the UDC module.