Energy-Saving Mode - Pfannenberg DTT 6201 Serie Instrucciones De Servicio

ENG
3.4.9

Energy-saving mode

Fig. 10: Temperature sensor - TS2
Cooling units with Multi-Controllers (MC) are equipped with an energy-saving module.
The Multi-Controller (MC) therefore has a connection for a second TS2 temperature sensor (1).
The TS2 temperature sensor (1) is installed externally on the cooling unit and monitors the switch cabinet interior temperature.
Functional description:
• In the delivery condition, the energy-saving mode is activated when cooling mode is not activated for 30 minutes. The
control panel then shows "En", see section "Controller", Page 17.
• If the switch cabinet interior temperature exceeds the temperature setpoint during active operation, a cooling request is
sent and the energy-saving mode is interrupted.
• The cooling mode always remains active until the temperature setpoint minus hysteresis is reached. The energy-saving
mode is always activated 30 minutes after reaching the temperature setpoint.
• If the external TS2 temperature sensor (1) measures a drop below the temperature setpoint in the energy-saving mode,
the evaporator fan (internal) switches off. The temperature setpoint is measured minus the hysteresis.
• If the external TS2 temperature sensor (1) measures exceeding of the temperature setpoint, the evaporator fan (internal)
switches on. The value of the temperature setpoint is measured plus hysteresis.
• If no fault occurs, the fault indication output in energy-saving mode is closed.
NOTE
• For details about the electrical connection, see chapter "External temperature sensor TS2", Page 47.
Operating Manual | Roof-mounted Cooling Unit | Multi Controller (MC) – 400 V, 2~ | 086100031c 23/80