Hardware

MM4A - Electrical distribution and switching unit for growing house

You can use this unit with MM3D or MM5D digital contol and remote device to switch heater, lighting and ventilating of growing house.

Technical data

power voltage:230 V AC 50/60 Hz
auxiliary voltage:230 V AC
max. supply current:max. 16 A
needed protection:16 A fuse or overcurrent breaker
isolation class:Class I
mechanical size:300x400x170 mm
IP protection:IP 54
IK protection:IK 03
material of cover:termoplast (ABS)

Channels

Heating Lighting Ventilating Outdoor lighting Internal socket Wall socket
Controlled yes yes yes no no no
Manual control no yes yes      
External control yes yes yes      
Mode of ext. control* with NO contact      
Uout 230 V AC 230 V AC 230 V AC 230 V AC 230 V AC 230 V AC
Ioutmax** 10 A 6 A 6 A 6 A 6 A 10 A
Protection of outputs overcurrent breaker overcurrent breaker overcurrent breaker overcurrent breaker overcurrent breaker overcurrent breaker
Warning light of protection yes yes yes no yes no
*WARNING! There are 230 V AC between opened contacts!
**The value indicates the load capacity of a given branch, but the sum of the total output currents must not exceed the total current consumption of the device.

  • Heating
    The output of the channel is protected by a F4 circuit-breaker inside the cabinet, and its active status is indicated by the green LED marked Active. The channel cannot be operated manually, it can be activated by a short-circuit to its input. The external thermostat prevents overheating of the growing area due to a malfunction. The off contact disconnects the heaters from the mains (L-N). The red light on the Protection error LED indicates overcurrent protection.
  • Lighting
    The output of the channel is protected by an F5 circuit breaker inside the cabinet, and its active status is indicated by the green LED marked Active. The channel can be switched on manually and by a short circuit to its input. Manual mode is indicated by the yellow LED marked Manual mode. When the contactor is off, the lamps are disconnected from the mains (L-N). The red light on the Protection error LED indicates overcurrent protection.
  • Ventilating
    The output of the channel is protected by an F6 circuit breaker inside the cabinet, and its active status is indicated by the green LED marked Active. The channel can be switched on manually and by a short circuit to its input. Manual mode is indicated by the yellow LED marked Manual mode. When the contactor is off, the ventilators are disconnected from the mains (L-N). The red light on the Protection error LED indicates overcurrent protection.
  • Outdoor lighting
    The channel is used to supply the outside lighting of the growing house, this output is protected by a circuit breaker F1 located inside the cabinet.
  • Wall socket
    The channel is used to power the wall socket inside the growing house, this output is protected by a circuit breaker F2 inside the cabinet.
  • Internal socket
    The channel is used to supply the socket inside the enclosure and the control unit can be connected to it. The output is protected by F3 circuit breaker. The red light on the Protection error LED indicates overcurrent protection.

Manuals

1:Mains - Power switch
2:Mains voltage - presence of mains voltage (white LED)
3:Auxiliary voltage - the presence of auxiliary voltage (white LED)
4:Manual mode - manual mode of lighting and ventilating (yellow LED)
5:Protection error - status of overcurrent protection (red LED)
6:Active - heater output is under voltage (green LED)
7:Active - lighting output is under voltage (green LED)
8:Active - ventilating output is under voltage (green LED)

Internal structure

F1:protection of outdoor socket
F2:protection of wall socket
F3:protection of internal socket
F4:protection of heating output
F5:protection of lighting output
F6:protection of ventilating output
F7:protection of auxiliary voltage
K1:contactor of heating output
K2:contactor of lighting output
K3:contactor of ventilating output
K4:relay of manual mode
K5:relay of overcurrent warning sign
P3:connecting point of protective conductor
P?:connectors

Schematic drawing

Download

name version format note
full documentation in package v190919-1.0tar.gz
Github git clone https://github.com/pozsarzs/mm4a.git

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