Knowledge Base › Wiring guide: Mighty Mule (GTO) SW4000XLS

Wiring guide: Mighty Mule (GTO) SW4000XLS

This guide shows where each wire from the Nimbio terminal strip lands on the GTO SW4000XLS’s control board. Gate Status: wired via the AUX RLY relay, which reports whether the gate is moving or at rest, not whether it is open or closed.

Printable version (PDF)

Note: This operator cannot supply enough continuous power for Nimbio. Use a separate 12–24V AC or DC power supply.

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- go to a separate power supply. This operator’s control board has no accessory power output; the manual describes only a battery-charging transformer. The Nimbio accepts 6.5 to 24 V AC or DC.
You need a small screwdriver for the terminal screws.

Nimbio terminal strip (left) to the SW4000XLS control board (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+	Supply +	—	Separate power supply
PWR-	Supply –	—	Separate power supply
Sense 2	Not used	—	—	Not used. AUX RLY is a single contact reporting motion vs. rest; a second sense line on it would only mirror Sense 1.
SC	AUX RLY	—	SW4000XLS control board	Sense common; the other side of the AUX RLY dry contact from Sense 1.
Sense 1	AUX RLY	—	SW4000XLS control board	Dry contact; closed only while the gate is moving.
NC	Not used	—	—	Not used: the operator input is wired to NO and C.
C	COM	—	SW4000XLS control board
NO	EXIT OPEN	—	SW4000XLS control board

PWR+

Operator terminal: Supply +Number: —Board: Separate power supplyNote:

PWR-

Operator terminal: Supply –Number: —Board: Separate power supplyNote:

Sense 2

Operator terminal: Not usedNumber: —Board: —Note: Not used. AUX RLY is a single contact reporting motion vs. rest; a second sense line on it would only mirror Sense 1.

Operator terminal: AUX RLYNumber: —Board: SW4000XLS control boardNote: Sense common; the other side of the AUX RLY dry contact from Sense 1.

Sense 1

Operator terminal: AUX RLYNumber: —Board: SW4000XLS control boardNote: Dry contact; closed only while the gate is moving.

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

Operator terminal: COMNumber: —Board: SW4000XLS control boardNote:

Operator terminal: EXIT OPENNumber: —Board: SW4000XLS control boardNote:

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

No operator setting is changed by this guide.

Gate Status

Gate Status: wired. Sense 1 and SC connect across the AUX RLY relay, a dry contact that closes only while the gate is moving and opens once it is at rest. With AUX RLY wired this way, Sense 1 reports whether the gate is moving or at rest, and Nimbio maps those two 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.