Maxim Integrated 6612_OMU_S2+2_URT_V1_14 - Manual (Page 24)

6612_OMU_S2+2_URT_V1_14 Firmware Description Document UG_6612_017
24 Rev. 1.0
Output
Location
(hex)
LSB Comment Example
Phase
Angle_nb A
Max
1D –
Outlet 1 maximum narrowband
phase angle measured.
If the maximum narrowband phase
angle measured on Outlet 1 is 70
degrees
)1D?
Returns:
+70.000
Reserved 1E – Reserved Reserved
Reserved 1F – Reserved Reserved
Table 3 lists the wideband measurement outputs for Outlet 1.
Table 3: Outlet 1 MPU Outputs for Wideband Method
Output
Location
(hex)
LSB Comment Example
Delta
Temperature
20 0.1 °C
Temperature difference from 22° C.
Note: Duplicate of address 0x00
(see Table 2 )
If external temperature is 32 °C
)20?
Returns:
+10.0
Line
Frequency
21 0.01 Hz
Line Frequency
Note: Duplicate of address 0x01
(see Table 2 )
If the line frequency is 60 Hz:
)21?
Returns:
+60.00
Alarm Status 22
Bit 0 – Minimum Temperature
Alarm.
Definition for Status Register
Bit 1 – Maximum Temperature Alarm.
Bit 2 – Minimum Frequency Alarm.
Bit 3 – Maximum Frequency Alarm.
Bit 4 - SAG Voltage Alarm.
Bit 5 – MINVA – under minimum
voltage on VA input.
Bit 6 – MAXVA – over maximum
voltage on VA input.
Bit 7 – MAXIA_NB – maximum
narrowband current exceeded on
Outlet 1.
Bit 8 – MAXIA_WB – maximum
wideband current exceeded on
Outlet 1.
Bit 9 – PFA_NB negative –
Narrowband Power Factor Negative
Threshold Alarm for Outlet 1. Only
available is )F2 bit 2 is 1.
Bit 10 – PFA_NB positive –
Narrowband Power Factor Positive
Threshold Alarm for Outlet 1.
Bit 11 – PFA_WB negative -
Wideband Power Factor Negative
Threshold Alarm for Outlet 1. Only
available is )F2 bit 2 is 1.
Bit 12 – PFA_WB positive –
Wideband Power Factor Positive
Threshold Alarm for Outlet 1.
Bit 13 – MAXIB_NB – maximum
narrowband current exceeded on
Outlet 2.
Alarms become “1” when
thresholds exceeded.
Note: Additional Status Alert is
Located at addr 0xBD (see Table 8 )
Note: When AC voltage input is less
than or equal to 10 V
RMS
,
•
Only MINVA alarm is active.
•
All measurements are forced
to 0 except power factor,
which is forced to 1.
Note: The frequency measurement
is forced to 0 as long as the SAG
voltage alarm is active.