Bender PEM533, Manual

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Application/inputs and outputs
45 PEM533_D00013_00_M_XXEN/06.2015
7. Application/inputs and outputs
7.1 Digital inputs
The device features six digital inputs which are internally operated with DC 24 V.
Digital inputs are typically used for monitoring external states. The switching states
of the digital inputs can be read from the LC display or from connected system
components. Changes in external states are stored as events in the SOE log in 1 ms
resolution.
7.2 Digital outputs
The device features two digital outputs. Digital outputs are typically used for set-
point trigger, load control or remote control applications.
Examples:
1. Can be operated via buttons on the front panel (Chapter 6.8 Setup using the but-
ton at the device)
2. Operation via communications interface
3. Control setpoints: Control actions in case of setpoint exceedance (Chapter 7.5.1
Control setpoints)
4. Control via digital inputs
7.3 Display Energy pulsing
The two LED pulse outputs are used for kWh and kvarh indication, if the function
EN PULSE is enabled. The setting can be carried out in the setup menu using the
buttons on the front or via the communications interface.
The LEDs flash each time a certain amount of energy is converted (1 kWh resp. 1
kvarh).
7.4 Power and energy
7.4.1 Voltage and current phase angles
Phase angle analysis is used to identify the angle relationship between the voltages
and currents of the three phase conductors.