Delios DLS 300 - Earth Connection (MANDATORY); Energy Meter Connection; External Control Signals Connection

DLS / DLS-C Series
59
Cod.: 240.010.0042
5.6 Earth Connection (MANDATORY)
The DLS inverter is equipped with two earthing contacts which must be simultaneously connected
to the protective conductor. The two earthing contact are provided by the GRID IN and AC OUT terminal
blocks.
See the connection instructions shown in Figure 14.
5.7 Energy Meter Connection
The DLS inverter uses an external energy meter to monitor the energy ows between the home loads and
the distribution grid to implement the available operating modes.
To ensure the correct operation of the system, it is necessary to connect the energy meter to the inverter
otherwise the system will enter into protection mode disabling the operation and signaling the failure to
communicate with the device.
The DLS inverter can operate only with the approved energy meter models. Contact the DELIOS s.r.l. or
consult the website www.delios-srl.it to identify compatible models.
See the connection instructions shown in Figura 15.
5.8 External Control Signals Connection
The EXTERNAL ALARM signal provides an isolated logic control suitable for operating external indica-tors
to return to the remote area the alarm conditions detected by the DLS monitoring device and indi-cated by
the LCD display.
The EXTERNAL ALARM signal is available at the following terminals:
• Terminal 3 → GND (COMMON)
• Terminal 4 → AL_EXT (EXTERNAL ALARM)
The EXTERNAL ALARM signal is enabled with the following logic levels:
• AL_EXT = 0V → Alarm condition
• AL_EXT = +15V → Normal operation
The external indicator monitoring port must have an input impedance of Ri ≥ 100kΩ.
The TELEDISTACCO and SEGNALE ESTERNO are relevant only in Italy (CEI-021).
The TELEDISTACCO and SEGNALE ESTERNO signals are available at the following terminals:
• Terminal 3 → GND (COMMON)
• Terminal 5 → T_D (TELEDISTACCO)
• Terminal 6 → S_E (SEGNALE ESTERNO)
The TELEDISTACCO e SEGNALE ESTERNO are enabled at low logic level (GND).
The NTC BATT + and NTC BATT - are only for internal use not used for the congurations described in this
manual.