SATEC SA300 ezPAC Operation Manual - Manual (Page 110)

Chapter 9 Totalization Energy and TOU Configuring Summary and TOU Registers
110 SA300 Substation Automation Unit
Chapter 9 Totalization Energy and TOU Registers
The SA300 provides 16 summary energy registers and 16 parallel TOU energy and
maximum demand registers to link to any internal energy source or to any external
pulse source that delivers energy pulses through the device digital inputs.
A total of 64 energy sources can be connected to the summary and TOU registers.
Each summary register can accumulate energies from multiple sources using
arithmetic addition and subtraction. A summary register may be linked to another
summary register to provide more comprehensive energy calculations.
The TOU system provides for each TOU energy register a parallel maximum demand
register that is updated automatically when a corresponding TOU register is
activated. The device supports 16 different tariffs using an arbitrary tariff structure.
The SA300 TOU system technique is based on the currently active TOU annual
calendar that assigns the user-selectable daily profile to each day of the year. The
TOU daily profiles specify daily tariff change points. The SA300 memory stores
calendars for 10 years. A total of 16 types of days are supported with up to eight tariff
changes per day.
By default, the summary registers in your device are not linked to energy sources and
are not operational. To activate a summary energy register, link it to the energy
source(s).
To activate TOU system:
1. Configure the TOU daily profiles for different types of days.
2. Configure the TOU calendars.
3. Link the TOU registers to the corresponding summary energy
registers that are used as source registers for TOU system.
Configuring Summary and TOU Registers
To configure the device summary and TOU registers, select Energy/TOU from the
Meter Setup menu.