Motor relays for greenhouses

RO901, RO902 & MR906 motor relays

Motor relays with built-in overload switch

RO901 and RO902 are master relays for 1 or 2 gear motors intended for shading or for ventilation systems. The relays can be used for manual operation of the gear motor and as power relays for control from, for example, climate computers. RO901 and RO902 have built-in overload switches as well as an intermediate relay which makes the control current very low (approximately 10 mA).

The relays can be extended with our MR102 fire relays.

They are control units which will force the screens or windows to open or close when activated by an external signal from smoke or fre alarm. Both relays are supplied in DGT by Senmatic’s well known splash-proof plastic box. RO901 and RO902 can be delivered for various voltages with overload switches up to 10 Amps. The 115 V relay is UL and C-UL approved.

Motor relay for reversing tube motors
MR906 is a control unit especially made for single phase 230 V reversing tube motors, as used for roller screens. On each unit, a built-in time delay of approximately two seconds protects the tube motor. The fre relay is integrated in MR906. MR906 can be built into control cabinets or delivered with six units in the normal relay box with power supply built-in.

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What's in it for you?

Control of shading or ventilation

Manual operation of gear motor

Can be delivered for various voltages

Overload switches up to 10 Amps

Further functions Download product sheet Technical specifications
Further functions

Further essential functions

  • Power Relay for control from, for example, climate computers
  • Master relays for 1 or 2 gear motors
  • RO901 and RO902 be extended with MR102 Fire Relay
  • MR906 made for single phase 230 V reversing tube motors
  • Fire Relay is Integrated in the MR906
Download product sheet

Download product sheet

Technical specifications

Specifications

RO901 & RO902 

  • Input: 2 x 400 V AC ±10 % (or 3 x 230 V AC)
  • Output: 3 x 400 V AC, max. 2.2 kW (3HK), 3 x 230 V AC, max. 1.5 kW (2HK), 1 x 230 V AC, max. 6 Amp.
  • Limit switch: Potentialfree switch normally closed, 24 V DC, 10 mA
  • Control input: Potentialfree switch 24 V DC
  • Dimensions L x W x D: 200 x 300 x 100 mm (8 x 12 x 4")
  • Weight: 3.8 kg (8.4 lb)

 

North America RO901 and RO902

  • Input: 3 x 208 V AC ±15 % (or 1 x 115 V AC)
  • Output: 3 x 208 V AC, max. 0.75 kW (1HK), 1 x 115 V AC, max. 6 Amp.
  • Limit switch: Potentialfree switch normally closed, 24 V DC, 10 mA
  • Control input: Potentialfree switch 24 V DC
  • Dimensions L x W x D: 200 x 300 x 100 mm (8 x 12 x 4")
  • Weight: 3.8 kg (8.4 lb)

MR906

  • Input: (6 x MR906): 1 x 230 V AC + N, +10 / -15 % (or 1 x 115 V AC + N). MR906: 24 V DC, max. ripple 500 mV
  • Output: Max. 230 V AC - 2 A, max. 0.23 kW (0.3HK). Max. 115 V AC - 2 A, max. 0.23 kW (0.3HK)
  • Control input: Potentialfree switch 24 V DC
  • Dimensions L x W x D: 200 x 300 x 100 mm (8 x 12 x 4")
  • Weight: 2.4 kg (5 lb)
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Climate Control

Get visual information of the different options for getting an optimal climate control of your greenhouse.