Siemens SENTRON PAC3120, Руководство пользователя, Страница: 25 / 160

Description
2.3 Average values and counters
PAC3120 and PAC3220
Equipment Manual, 10/2019,
L1V30425208F-01
23
2.3.4 History of active energy consumption
Based on selected recordings of energy consumption over time, users can perform a
targeted analysis of their energy consumption for the purpose of optimizing their energy
usage. The power monitoring devices have a daily energy counter and a monthly energy
counter.
● The daily energy counter records the active energy for each day of the preceding two
months.
● The monthly energy counter records the active energy for each month of the preceding
two years.
This function is available only in conjunction with communication interfaces. A list of
available measured values can be found in chapter Active energy history with Modbus
function code 0x14 (Page 147).
2.3.5 Configurable universal counter
The devices provide one configurable counter. The following counting options are available:
● Pulse counting via the digital input for kWh/kvarh
● Status changes at the digital input (rising edge only)
● Status changes at the digital output (rising edge only)
● Limit violations
2.3.6 Operating hours counter
The operating hours counter is used for monitoring the runtime of a connected load (only
functions when energy counting is implemented).
2.3.7 Limits
The power monitoring devices have a function for monitoring up to six limit values. These
can be monitored for violation of the upper or lower limit. If a limit value is violated, specific
actions can be triggered.
In addition, the limit values can be combined with each other using a logic operation. The
result of the logic operation can also be used to trigger specific actions in the same way as
the individual limit values.
The limit violations are shown on the display.