Knowledge Base › Wiring guide: Beninca BRAIN 24

Wiring guide: Beninca BRAIN 24

This guide shows where each wire from the Nimbio terminal strip lands on the Beninca BRAIN 24 control unit, and which logic setting Gate Status needs. Gate Status: wired. Sense 1 and SC connect across the SCA contact (terminals 9-10), and Nimbio maps the relay’s two states to the labels shown in the app.

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Before you start

Power the operator down at its supply before touching any terminal.
The Nimbio terminal strip has eight terminals: PWR+, PWR-, Sense 2, SC, Sense 1, NC, C and NO. This guide wires Sense 1 and SC; Sense 2 is not used (see “Connections”).
Power: PWR+ and PWR- land on terminals 11 and 12 (24 Vac/dc accessory power, 500 mA maximum). The Nimbio board draws 40 to 70 mA and accepts AC or DC.
You need a small screwdriver for the terminal screws.

Nimbio terminal strip (left) to the BRAIN 24 control unit (right). Wire tags name the destination terminal. On a phone, scroll the diagram sideways or pinch to zoom; the Connections list below has every wire.

Connections

Nimbio terminal	Operator terminal	Number	Board	Note
PWR+	24 Vac/dc (+)	11	BRAIN 24 control unit	24 Vac/dc accessory power, 500 mA maximum.
PWR-	24 Vac/dc (-)	12	BRAIN 24 control unit
Sense 2	Not used	—	—	Not used. SCA is a single N.O. contact, and one contact reports one state.
SC	SCA	10	BRAIN 24 control unit	Sense common; the other side of the SCA contact from Sense 1.
Sense 1	SCA	9	BRAIN 24 control unit	SCA contact; open-gate indicator when 2Ch logic is OFF.
NC	Not used	—	—	Not used: the operator input is wired to NO and C.
C	COM	13	BRAIN 24 control unit
NO	OPEN	21	BRAIN 24 control unit

PWR+

Operator terminal: 24 Vac/dc (+)Number: 11Board: BRAIN 24 control unitNote: 24 Vac/dc accessory power, 500 mA maximum.

PWR-

Operator terminal: 24 Vac/dc (-)Number: 12Board: BRAIN 24 control unitNote:

Sense 2

Operator terminal: Not usedNumber: —Board: —Note: Not used. SCA is a single N.O. contact, and one contact reports one state.

Operator terminal: SCANumber: 10Board: BRAIN 24 control unitNote: Sense common; the other side of the SCA contact from Sense 1.

Sense 1

Operator terminal: SCANumber: 9Board: BRAIN 24 control unitNote: SCA contact; open-gate indicator when 2Ch logic is OFF.

Operator terminal: Not usedNumber: —Board: —Note: Not used: the operator input is wired to NO and C.

Operator terminal: COMNumber: 13Board: BRAIN 24 control unitNote:

Operator terminal: OPENNumber: 21Board: BRAIN 24 control unitNote:

When the wiring is done, restore power at the supply. A Nimbio support team member then calls to test the gate before you close the panel.

Settings on the operator

SCA (terminals 9-10) is an open-gate indicator only when 2Ch logic is set to OFF in the control-unit menu; this guide requires that setting. With 2Ch logic ON, the same terminals instead follow the receiver’s second radio channel. Confirm the setting for your site with Nimbio support during installation.

Gate Status

Gate Status: wired. Sense 1 (terminal 9) and SC (terminal 10) connect across the SCA contact, with 2Ch logic set to OFF. The contact is closed while the gate is open, pulses during movement, and is open while the gate is closed; Nimbio maps its states to the labels shown in the app. Sense-line polarity does not depend on the wiring. Nimbio maps each sense line’s triggered and untriggered state to an Open or Closed label after installation. If Gate Status shows the opposite of the physical gate, contact Nimbio support to have the labels switched; no rewiring is needed.

No suitable output on your operator? A magnetic gate switch can report the gate’s position instead: wire its two leads to Sense 1 and SC for fully closed, or to Sense 2 and SC for fully open. The switch must be a dry contact that puts out no power of its own; if yours puts out power, add a relay that turns it into a dry contact.