Danfoss AK-SM 850 - Page 60

Conguration -> Control -> ENERGY [Danfoss Supported
Power meter]
This example highlights a Danfoss supported meter WattNode +
Modbus. Having already dened the power meter as ‘WN Plus/
MB’ under the control page, navigate to the Conguration-
>Control->Energy page. Under type, select WattNode MB
(Modbus).
The physical connection to the Modbus network should keep the
polarity (+ terminal should be to the + terminal on the Wattnode)
Using the drop down list, the WattNode +
meter has been selected.
Name: Enter custom description for meter
Amperage: Select the amperage of the CT’s connected to the
Wattnode +.
Collect History: Select yes to collect history from this meter
Power Update: Interval to which power is measured.
Energy Update: The interval over which energy (the integral of
power over time) is calculated.
Reactive Update: The interval over which reactive compo-
nents are recalculated.
Demand Period: The interval over which demand is calculated.
Demand is dened as average power over a specied time
interval.
Demand Subintervals: The # of divisions of the demand
period used when calculating a “rolling demand” using a
“sliding window.”
After the relevant Energy control questions have been cong-
ured, the meter must have the address correctly congured. To
add the WattNode + modbus meter to the AK-SM network,
ensure all network wiring is in place and that power has been
applied to the WattNode + meter. Navigate to the addresses
tab and then enter the same address that is already set in the
meter. Perform a network scan to bring the WattNode + meter
on line.
Select the address tab to enter the address
which has been assigned in the Wattnode
meter (bit switches)
Remember to correctly wire and use the
appropriate modbus port on the AK-SM.
60 User Guide Lit. no. USCO.PI.R1.E1.02 © Danfoss 07-2013 AK-SM 850