Knowledge Base › Wiring guide: DoorKing 9150

Wiring guide: DoorKing 9150

This guide shows where each wire from the Nimbio terminal strip lands on the DoorKing 9150’s 4602 control board, and which switch setting the relay needs. Gate Status: wired on the main board. Sense 1 and SC connect across the board’s dry relay contact, and Nimbio maps the relay’s two states to the labels shown in the app.

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, not to the operator board. Terminal 3 (24 VAC) is limited to 250 mA for everything connected to it and the manual warns that drawing more can overheat the board’s transformer, so do not power the Nimbio from it. The Nimbio accepts 6.5 to 24 V AC or DC; either supply lead can go to either PWR terminal. C lands on Low Voltage Common, terminal 18.
You need a small screwdriver for the terminal screws.

Nimbio terminal strip (left) to the 4602 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	Do not power from the operator board — see “Before you start.”
PWR-	Supply –	–	Separate power supply
Sense 2	Not used	—	—	Not used. Terminals 15 and 16 are the two sides of one relay contact, and one contact reports one state.
SC	Dry Relay Contact	16	4602 control board	Sense common; the other side of the dry relay contact from Sense 1.
Sense 1	Dry Relay Contact	15	4602 control board	Dry relay contact; behavior set with SW 1 switches 4 and 5.
NC	Not used	—	—	Not used: the operator input is wired to NO and C.
C	Low Voltage Common	18	4602 control board
NO	Full Open	4	4602 control board

PWR+

Operator terminal: Supply +Number: +Board: Separate power supplyNote: Do not power from the operator board — see “Before you start.”

PWR-

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

Sense 2

Operator terminal: Not usedNumber: —Board: —Note: Not used. Terminals 15 and 16 are the two sides of one relay contact, and one contact reports one state.

Operator terminal: Dry Relay ContactNumber: 16Board: 4602 control boardNote: Sense common; the other side of the dry relay contact from Sense 1.

Sense 1

Operator terminal: Dry Relay ContactNumber: 15Board: 4602 control boardNote: Dry relay contact; behavior set with SW 1 switches 4 and 5.

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

Operator terminal: Low Voltage CommonNumber: 18Board: 4602 control boardNote:

Operator terminal: Full OpenNumber: 4Board: 4602 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

The dry relay contact’s behavior is chosen with SW 1 switches 4 and 5 on the 4602 board. The manual’s four options are: relay active when the gate is fully open; when the gate is not closed; when the gate is opening and open; when the gate is opening and closing. Confirm the setting for your site with Nimbio support during installation.

Gate Status

Gate Status: wired. Sense 1 (terminal 15) and SC (terminal 16) connect across the dry relay contact. The relay switches on the gate condition selected with SW 1 switches 4 and 5, and Nimbio maps its 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.

Frequently asked questions

Does the DoorKing 9150 need an expansion board for Gate Status? +

No. Sense 1 and SC land on the dry relay contact of the main 4602 board, terminals 15 and 16.

Which Nimbio terminals open the gate on the DoorKing 9150? +

NO and C, wired to Full Open (terminal 4) and Low Voltage Common (terminal 18). The Nimbio relay closes NO to C, which the 9150 reads as a full-open command.

Why is Sense 2 not used on the DoorKing 9150? +

Terminals 15 and 16 are the two sides of one relay contact. One contact reports one state, so Sense 1 and SC across it is the complete connection; a second sense line on the same contact would only mirror the first.

Is the Nimbio NC terminal used on the DoorKing 9150? +

No. The operator input takes the NO and C pair, so NC stays empty.