MRH Çatı Fanları

Elektrik bağlantısı

Diagram 1 (connection of electric motor in the fan`s service switch)

Electric motor with P2<=4 kW in Y or D connection

Lock the switch in position ON to prevent unintended switch OFF (lock is not in scope of delivery)

Diagram 2 (connection of actuator in the actuator`s service switch)

* 24VDC (+30/-20%)

** NO/NC are intended to control position of actuator`s service switch (ON - OFF)

Warning: the control voltage 24VDC to open or close hatch cover should apply max. 6 minutes.

This is to ensure by control system (use actuator`s internal floating limit switches as indication of cover position to cut off the control voltage). More see instructions (current, intermittence).

The connection cable to service switch calculate with max. 1V voltage drop at max. load!

Operating mode for peak load at 25°C ambient: S2 1 min

Operating mode for continuous load at 40°C ambient: S3 5% (example: open in 30s, then wait 9min 30s)

Max. current of actuator(s) at SL 1000 (rated MRH load):

MRH 400-630: 4A

MRH 710-800: 6A

MRH 1000: 8A

MRH 1120-1250: 2x8A=16A

Diagram 3 (connection of actuator`s internal floating limit switches in the actuator`s service switch)

*** drawn position - closed hatch

1-2 opened, 2-3 closed in closed hatch position

1-2 closed, 2-3 opened in opened hatch position

1-2 closed, 2-3 closed in any intermediary position of the hatch cover

1-2, 4-5 opened, 2-3, 5-6 closed in closed hatch position (MRH 1120-1250 only)

1-2, 4-5 closed, 2-3, 5-6 opened in opened hatch position (MRH 1120-1250 only)

1-2, 4-5 closed, 2-3, 5-6 closed in any intermediary position of the hatch cover (MRH 1120-1250 only)

Potentialfree NC contacts, load capacity 24VDC/1A

Functions of the actuator`s service switch:

Position 0: stop (NO - opened contact, NC - closed contact) - SAFETY POSITION

Position 1: open hatch cover (NO - closed contact, NC - opened contact) - WARNING!

Position 2: close hatch cover (NO - opened contact, NC - closed contact) - DANGER!