Maxim Integrated 6612_OMU_S2+2_URT_V1_14 - Manual (Page 28)

6612_OMU_S2+2_URT_V1_14 Firmware Description Document UG_6612_017
28 Rev. 1.0
Table 4 lists the narrowband measurement outputs for Outlet 2.
Table 4: Outlet 2 MPU Outputs for Narrowband Method
Output
Location
(hex)
LSB Comment Example
Delta
Temperature
40 0.1 °C
Temperature difference from 22° C.
Note: Duplicate of address 0x00
(see Table 2 ).
If external temperature is 32 °C
)40?
Returns:
+10.0
Line
Frequency
41 0.01 Hz
Line Frequency
Note: Duplicate of address 0x01
(see Table 2 ).
If the line frequency is 60 Hz:
)41?
Returns:
+60.00
Alarm Status 42
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.
Bit 14 – MAXIB_WB – maximum
wideband current exceeded on
Outlet 2.
Bit 15 – PFB_NB negative –
Narrowband Power Factor
Negative Threshold Alarm for
Outlet 2. Only available is )F2 bit 2
is 1.
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.