Siemens SENTRON PAC3100, Manual, Page: 23 / 152

Description
3.5 Digital inputs and outputs
SENTRON PAC3100
Manual, 07/2009, A5E02385159B-01
23
3.4.2 Energy counters
Energy counters
SENTRON PAC3100 has energy counters for counting
●
Active energy import
● Active energy export
● Reactive energy import
● Reactive energy export
The device also calculates the energy balance
●
Active energy balance
● Reactive energy balance
The energy balance is calculated from: Import minus export.
Availability
Two of the 6 variables can be represented on the display and read out via the interface. The
selection can be made when parameterizing the device.
3.4.3 Behavior in the case of power failure and power restore
After a power failure, the device starts back at zero with the calculation of the power demand
of the total active power and total reactive power.
Counter statuses and maximum/minimum values are written from the volatile to the non-
volatile memory at the following intervals:
Counter values Every 5 mins.
Maximum/minimum values Every 5 secs., if available
3.5 Digital inputs and outputs
The SENTRON PAC3100 has:
●
2 digital inputs
● 2 digital outputs