Q3E – ELECTRICAL PANEL

Metal casing painted with RAL7035, 120 micron thickness, suitable for outdoors installation
Protection class IP65
Working temperatures: -40°C/40°C
Power supply: 3~ 400V / 50Hz +PE
Main switch
Protected by automatic switches (circuit breakers) connected to groups of fans
Controller mounted inside the box
Fan speed regulation controlled by MODBUS
Free contact for unit powered indicator
Free general fan alarm contact
Warning light to signal system is powered
General alarm warning light
Quick power connectors for fans directly on panel
Quick signal connector for fans directly on panel
Execution in compliance with CE regulations
Internal heating element suitably sized for ambient temperatures up to -40°C

CONTROLLER Em – EC-MANAGER:

• 2 MODBUS RS485 connections (COM 0 on PC side & COM 1 on fan side);

• Regulation mode MASTER (temperature or pressure probes) or SLAVE (0-20mA, 4-20mA, 0-5V, 0-10V);

• Min. and Max. fan speed setting.

Auxiliary contacts – available contacts:

• S1 – direct mode – reverse;

• SP – selection of setpoints 1 or 2;

• S5 – night speed limitation;

• S2 – controller ON-OFF;

• S6: max. spray speed enable;

• TK – contact for connection of the thermal motor protection (by default FANS ON with NC contact; FANS OFF with NO contact).

3 programmable relays: RL1 – general controller alarm; RL2 – fan alarm; RL3 – relay for heat exchanger cleaning start.2 programmable analog outputs (for fan regulation or spray activation).

Advanced functions:

• Emergency fan speed – fan rotation speed in the case of a control system fault (only on request);

• Overspeed – possibility to increase the speed setpoint above the max. fan speed value (by-pass MAX RPM limit);

• Speed-off – possibility to reduce the speed setpoint below the min. fan speed value (by-pass MIN RPM limit); Low capacity – is used to switch off groups of fans in the case of low temperatures, high temperature variations between day and night;

• Anti-lock – is used to start the fans if they are supposed not to operate for a long time;

• Washing – is used to program a washing cycle of the heat exchanger (start, frequency, duration), including reverse fan rotation and activation of the RL3 relay for washing system start-up;

• Cleaning – is used to program a washing cycle of the heat exchanger (start, frequency, duration, rotation speed), including reverse fan rotation;

• Reverse fan rotation – possibility to operate the fans in reverse rotation.

Q3E Electrical Panel