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78M6612-DB/OMU-USB

P1-P3P4-P6P7-P9P10-P12P13-P15P16-P18P19-P21P22-P24P25-P27P28-P30P31-P33P34-P36P37-P39P40-P42P43-P45P46-P48P49-P51P52-P54P55-P57P58-P58
6612_OMU_S2+2_URT_V1_14 Firmware Description Document UG_6612_017
40 Rev. 1.0
6 Configuration Parameter Entry
6.1 MPU Parameters
Table 8 lists the MPU parameters configurable by Firmware 6612_OMU_S2+2_URT_V1_14.
Table 8: MPU Parameters
MPU
Parameter
Location
(hex)
LSB Default Comment Example
VMAX A A0 mVrms +471.500
External rms voltage
corresponding to 250 mVpk at the
VA input of the 78M6612. It must
be set high enough to account for
overvoltages. Usually set to
471.500 V (471.500d).
If only using a 120V
system, the user can set
VMAX A to about 2x the
maximum voltage for added
resolution. Set VMAX A to
270V:
)A0=+270.000<CR>
Starting IA A1 mArms +0.007
Minimum current value to be
measured on the IA input.
Currents below this value will be
ignored. Also known as CREEP
IA.
Default setting is 7 mA. If
start current on channel A
desired is 10 mA:
)A1=+0.010<CR>
IMAX A A2 mArms +52.000
External rms current
corresponding to 250 mVpk at the
IA input of the 78M6612.
The default is set to 52
Amps for overhead. For
added margin, in a system
using current shunts IMAX
could be changed as
follows:
IMAX= (Vpk/√2)/R
shunt
For a 4 mΩ current shunt
IMAX=44.19 Amps
To set IMAX A:
)A2=+44.190<CR>
Starting IB A3 mArms +0.007
Minimum current value to be
measured on the IB input.
Currents below this value will be
ignored. Also known as CREEP
IB
Default setting is 7 mA. If
start current on channel B
desired is 10 mA:
)A3=+0.010<CR>
IMAX B A4 mArms +52.000
External rms current
corresponding to 250 mVpk at the
IB input of the 78M6612.
The default is set to 52
Amps for overhead. For
added margin, in a system
using current shunts IMAX
could be changed as
follows:
IMAX= (Vpk/√2)/R
shunt
For a 4 mΩ current shunt
IMAX=44.19 Amps
)A4=+44.190<CR>
Unused A5 – – Unused
UG_6612_ 017 6612_OMU_S2+2_URT_V1_14 Firmware Description Document
Rev. 1.0 41
MPU
Parameter
Location
(hex)
LSB Default Comment Example
Temperature
Nominal
A6 – +0
Temp_raw_x reading at 22 °C.
Needed to enable temperature
compensation.
Temp _raw_x is obtained
from the CE:
]71?<CR>
This value is then entered
here:
)A6=+value in decimal
Also, the command:
>CLT<CR>
Will do the same as the
steps above.
Reserved A7 – Reserved
PPMC A8 ppm/°C -668 ppm per °C.
Do not change the default
setting.
PPMC
2
A9
ppm/°C
2
-341
ADC temperature compensation
ppm per °C
2
.
Do not change the default
setting.
Cost/kWh AA mUnits +0.150
Cost per kWh (kilowatt hour) in
milliunits.
If the cost per kWh is to be
10 units:
)AD=+10.000<CR>
Units of Cost AB N/A USD
4-byte string describing unit of
cost
(e.g. USD, EURO etc.). There
must be 4 characters. If entering
US dollars, USD, there needs to
be a space after the D to make it a
four character string.
To enter US Dollars:
)AB=”USD “<CR>
To enter Euros:
)AB=”EURO”<CR>
Relay
Configuration
AC – 0
Bit 1 (Relay Polarity)
0 = Normal Polarity
1 = Inverted Polarity
Bit 0 (Relay Type)
0 = non-latched
1 = latched
Sequence
Delay
AD 0.1s +0.1 Time delay between relays.
If the user desires a 1
second delay between the
closing of the first and
second relays and also a
one second delay between
the opening of the first and
second relays, then enter
the following:
>)AD=+1<CR>
Energize
Delay
AE ms +0.000
Parameter given in relay
manufacturer’s data sheet is
entered here. The amount of
delay will be 1 ms plus the value
entered in )AE.
If the user desires 8 ms of
delay then enter the
following:
>)AE=+0.007<CR>
De-Energize
Delay
AF ms +0.000
Parameter given in relay
manufacturer’s data sheet is
entered here. The amount of
delay will be 1 ms plus the value
entered in )AF.
If the user desires 8 ms of
delay then enter the
following:
>)AF=+0.007<CR>
Reserved B0 - BC ppb 0 Reserved Reserved
6612_OMU_S2+2_URT_V1_14 Firmware Description Document UG_6612_017
42 Rev. 1.0
MPU
Parameter
Location
(hex)
LSB Default Comment Example
Additional
Status
BD – 1
Bit 0 – Reserved.
Bit 1 – WPULSE Disable.
Bit 2 – VCal Failure.
Bit 3 – ICal1 Failure.
Bit 4 – WCal1 Failure.
Bit 5 – ICal2 Failure
Bit 6 – WCal2 Failure
Unused BE
–
Tolerance on
Phase
BF
0.001°
0.100°
Measured value to fall within this
set tolerance of the target value
(Calibration Current entry) for the
calibration to be complete.
If the tolerance to the target
phase is desired to be more
coarse, to within 0.5°, the
user can enter the
following:
>)BF=+0.500<CR>
Reserved C0 – 0 Reserved Reserved
Calibration
Voltage
C1 mVrms +120.000
Target line voltage (rms) used for
calibration.
If the target line voltage for
calibration is 220V, enter
the following:
>)C1=+220<CR>
Calibration
Current
C2 mArms +1.000
Target load current (rms) used for
calibration.
If the target load current for
calibration is 2A, enter the
following:
>)C2=+2<CR>
Calibration
Phase
C3 0.1° +0
Target Phase (voltage to current).
Normally set to zero.
Tolerance on
Voltage
C4 mVrms +0.010
Measured value to fall within this
set tolerance of the target value
(Calibration Voltage entry) for the
calibration to be complete.
If the tolerance to the target
voltage is desired to be
more coarse, to within
0.1V, the user can enter the
following:
>)C4=+0.100<CR>
Tolerance on
Current
C5 mArms +0.010
Measured value to fall within this
set tolerance of the target value
(Calibration Current entry) for the
calibration to be complete.
If the tolerance to the target
current is desired to be
more coarse, to within
0.1A, the user can enter the
following:
>)C5=+0.100<CR>
Average
Count for
Voltage
C6 1 +3
Number of voltage measurements
taken and averaged to be
compared to the target value
(Calibration Voltage entry).
If the amount of averaging
for the voltage
measurement is desired to
increase to 10 enter the
following:
>)C6=+10<CR>
Average
Count for
Current
C7 1 +3
Number of current measurements
taken and averaged to be
compared to the target value
(Calibration Current entry).
If the amount of averaging
for the current
measurement is desired to
increase to 10 enter the
following:
>)C7=+10<CR>
P1-P3P4-P6P7-P9P10-P12P13-P15P16-P18P19-P21P22-P24P25-P27P28-P30P31-P33P34-P36P37-P39P40-P42P43-P45P46-P48P49-P51P52-P54P55-P57P58-P58

78M6612-DB/OMU-USB

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Buy 78M6612-DB/OMU-USB
Manufacturer:
Maxim Integrated
Description:
Power Management IC Development Tools Omu Demo Kit
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