Verkada AC42 Door Controller Installation Guide

: June 10, 2024
: Verkada

Verkada AC42 Door Controller

Product Information

The AC42 Door Controller is a device manufactured by Verkada Inc. for access control purposes. It supports a 100-240VAC (50/60Hz) power supply and can be connected to the network using the Ethernet port located at the bottom of the controller. The controller is compliant with UL294 Performance Levels and CAN/ULC-60839-11-1 Grade I. It also complies with Part 15 of the FCC Rules and ISED’s license-exempt RSSs.

Levels of Access Control

Attack Level/Grade: Level 1
Endurance Level/Grade: Level 1
Line Security Level/Grade: Level 1
Standby Power Level/Grade: Level 1

What’s in the Box?

AC42 Door Controller
Wall Mount
Mounting Template
AC Cable
4x Plywood Screws
Screwdriver
2x Keys

Caution

Installation and/or maintenance of this product shall be performed by trained professionals only.

Firmware

The firmware version can be verified on Verkada Command command.verkada.com.

Appendix: AC42 Compliance

This equipment is for use in an indoor and a restricted access area.

Product Usage Instructions: AC42 Door Controller

Connect the AC42 Door Controller to your network using the Ethernet port located at the bottom of the controller.
Connect the AC42 power supply into your power outlet. The controller supports a 100-240VAC (50/60Hz) power supply.
Ensure that you have a working internet connection, a smartphone or laptop, a #2 Phillips head and power drill, and a level.
After connecting the AC42 to the network and power, visit verkada.com/start for further instructions.
To access detailed installation instructions, visit verkada.com/support.

Controller LED Behavior

Solid Orange: Controller is on and booting up
Flashing Orange: Controller is updating the firmware
Flashing Blue: Controller is managing doors, but cannot reach the server
Solid Blue: Controller is managing doors and connected to the server
Flashing Pink: Identity

Other LED Behavior

Door: On – Door unlocked
AUX Out: On – Relay in a triggered state
REX / DPI / AUX In: On-Circuit closed
FAI: On – FAI in a triggered state

Compliance

FCC Statement

This device complies with Part 15 of the FCC Rules. Operation is subject to the following two conditions:

This device may not cause harmful interference, and
This device must accept any interference received, including interference that may cause undesired operation.

This equipment has been tested and found to comply with the limits for a Class A digital device, pursuant to part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference when the equipment is operated in a commercial environment. This equipment generates, uses, and can radiate radio frequency energy and, if not installed and used in accordance with the instruction manual, may cause harmful interference to radio communications. Operation of this equipment in a residential area is likely to cause harmful interference in which case the user will be required to correct the interference at his own expense.
FCC Caution: Any changes or modifications not expressly approved by the party responsible for compliance could void the user’s authority to operate this equipment.

IC Statement

This device complies with ISED’s license-exempt RSSs. Operation is subject to the following two conditions:

This device may not cause harmful interference, and
This device must accept any interference received, including interference that may cause undesired operation.
This equipment is for use in an indoor and a restricted access area.

Introduction

What’s in the box

AC42 Door Controller
Wall Mount
Mounting Template
AC Cable
4x Plywood Screws
Screwdriver
2x Keys

What you’ll need

A working internet connection
A smartphone or laptop
A #2 Phillips’s head and power drill
A level

Introduction

Overview 1/2

Solid Orange
The controller is on and booting up
Flashing Orange
The controller is updating the firmware
Flashing Blue
The controller is managing doors, but cannot reach the server
Solid Blue
The controller is managing doors and is connected to the server
Flashing Pink
Identify
Door: On
Door unlocked
AUX Out: On
Relay in a triggered state
REX / DPI / AUX In: On Circuit closed
FAI: On
FAI in a triggered state

Overview 2/2

Controller highlights

Ports for: AUX.
Ports for: Doors 1 to 4. All door ports function the same. 3 Ports for Fire Alarm Interface(FAI).
Ports for: Ethernet, USB, UPS, Door Tamper.

Recommended Testing

To ensure ongoing functionality of AC42, it is recommended to check the following interfaces every 6 months:

Short each input to its adjacent GND port and verify that LED illuminates.
Use multimeter to confirm expected impedance across relay outputs.
- Closed across NC and COM
- Open across NO and COM
Use multimeter to verify correct voltage is supplied at 12V AUX output, Relay Contact outputs, and reader power outputs.
Check the shielding cables of the readers and other AUX wiring, if any, for proper connection to the grounding screw/s on the chassis.
If a back-up battery is in use, follow installation, maintenance, and other safety guidelines and recommendations from the battery manufacturer

AC42 Technical Specifications

Power Consumption| 60W maximum|
---|---|---

AC Power Input

| 100-240VAC

50/60Hz

1.5A maximum

|

Inputs

| 2x REX dry inputs per door 1x DPI dry input per door 2x auxiliary dry inputs|

Readers

| 1x reader port (Verkada/RS-485 or Wiegand) per door Reader current consumption must be < 250mA per reader

Note: max of 4 readers can be powered simultaneously

|

Relay Outputs

| 1x wet or dry relay per door

Wet relay switch-selectable power:

● 12V operation 700mA max

● 24V operation 350mA max

Dry relay max pass-through power:

● 24VDC @ 2A (resistive load)

2x auxiliary dry relays

Humidity

Compliance

| FCC Part 15 Class A, ICES-3 Class A, CE, UKCA, RCM, VCCI, UL 294, CAN/ULC 60839-11-1, UL 62368-1, CSA C22.2 No. 62368-1,

IEC 62368-1, NDAA

Mounting 1/4

Use the paper mounting template from the hardware box to get a sense of the wall space AC42 will occupy. Use the mounting template to drill pilot holes for the mount plate.

Please Note Leave at minimum 2” clearance on the left side of the enclosure in order for the door to open and close without hindrance.

Use the supplied screws to install the mount plate onto the wall. Once attached, the enclosure will extend down roughly 16” (~40cm), from the top of the mount plate.

Please Note The supplied screws are intended for plywood installations. For other wall materials, ensure proper load-bearing fasteners are used.

Mounting 2/4

Unlock and open the enclosure door with the supplied key. Remove the protective cardboard from the inside of the door.

Remove the door by sliding it upwards.

Mounting 3/4

Carefully slot the enclosure onto the mount plate.

Secure the enclosure onto the wall using the thru holes on the bottom side of the enclosure. Verkada

Mounting 4/4

Reattach the door to the enclosure

Connect the grounding cable from the enclosure to the door

Recommended Wiring

Verkada AC42 is capable of supporting Verkada Readers over RS-485 and standard Wiegand readers. The following diagram shows the wire types that are recommended for use with the Verkada AC42.

Signal	AWG	Twisted Pair	Conductor	Shielded	Max Length
Reader Option 1 (22 AWG)	22	Yes		Yes	250 ft
Reader Option 2 (20 AWG)	20	Yes		Yes	300 ft
Reader Option 3 (18 AWG)	18	Yes		Yes	500 ft
Power (22 Gauge)	22		Yes	Yes	600 ft
Power (18 Gauge)	18		Yes	Yes	1500 ft
Request-to-Exit	22/18		Yes	Yes	1500 ft
Door Contact	22		Yes	Yes	1500 ft

We recommend using one twisted pair for power (+/-) and one twisted pair for the data (D0/D1 or A/B). Wiring methods shall be in accordance with National Electrical Code, ANSI/NFPA 70.

Shield Wiring and Grounding

You must use shield wiring with the AC42, particularly for the card reader:

Connect the drain wire (bare metal) from the reader cable bundle to the drain wire in the shielded cabling. Then, connect the drain wire at the other end of the shielded cabling to Earth ground.
Improper grounding and shielding may result in unintended product behavior. It is recommend to connect one of the chassis grounding screws to the building ground at the installation site.

Required Network Settings
An Ethernet connection with DHCP must be used to connect the AC42 to the Local Area Network (LAN). You also need to configure firewall settings to communicate with the AC42.

TCP port 443
UDP port 123 (NTP time synchronization)

Connecting a Door 1/5

The door ports’ Form C relays can be driven dry or wet. AC42 is rated to power 12V locks up to 700mA and 24V locks up to 350mA.
None/Dry
The AC42 does not provide power to the locking hardware (typically used with external power supplies).
Wet
The AC42 provides 12V or 24V power to the locking hardware.
Warning: Ensure power is disconnected from the
AC42 and locking hardware before wiring, removing or inserting readers, locks or any other peripherals.

Wiring Fail Secure and Fail Safe
Locking Hardware Fail secure and fail safe are ways of configuring locking hardware:

Fail secure hardware locks when power is interrupted. Usually uses NO (Normally Open Configuration)
Fail safe hardware unlocks when power is interrupted. Usually uses NC (Normally Closed configuration)

Connecting a Door 2/5

Connect the Lock (Dry)
When using an external power supply which uses a dry contact, ensure that “NONE” is selected on the door power selection switch

Connect the Lock (Wet)
In a Wet configuration, ensure that power selection for each door is set to the correct voltage as outlined by the locking hardware specifications.

Set it to “12VDC” for 12 volt locking hardware
Set it to “24VDC” for 24 volt locking hardware The AC42 is rated to power 12V locks up to 1A and 24V locks up to 500mA.

Warning: When connecting the lock in the WET configuration, ensure the negative of the lock goes into the COM port as shown in the diagrams below.

Fail-Safe: LOCK (+) positive goes into NC LOCK (-) negative and ground wire goes into COM
Fail Secure: LOCK (+) positive goes into NO LOCK (-) negative and ground wire goes into COM

Connecting a Door 3/5

Connecting the Reader
The AC42 is rated to power readers at 12V up to 250mA via the + (VIN) and – (GND) connection. Standard Wiegand readers use the top 4-port inputs (powered from + and – of the bottom port) while Verkada/RS-485 readers use the bottom 4-port inputs. The drain wire of the shielded cable should be secured to the nearest AC42 chassis ground.

Verkada/RS-485 Reader

Wire Color	Signal
Red	12V Power+
Black	12V Power-
White	A
Green	B

Wiegand Reader

Wire Color	Signal
Red	12V Power+
Black	12V Power-
Green	Data 0
White/Gray	Data 1
Brown	Red LED
Orange	Green LED

Connecting a Door 4/5

Connecting the Inputs
Both the DPI (Door Position Indicator) and the Request-to-Exit (REX) inputs are dry contacts. Installing these inputs is optional. They can be configured in Verkada Command.

Door Position Indicator
Verkada AC42 expects the DPI to be NORMALLY CLOSED (NC)
Request-to-Exit (REX)
Verkada AC42 expects the REX to be NORMALLY CLOSED (NO)The REX can be configured in Verkada Command to release the lock; this is most commonly seen in electromagnetic locks. The REX unlock time can also be configured.

Connecting a Door 5/5

Wiring the REX With the Door Strike
For safety-related applications, wire the REX in parallel with the Door Strike. You can wire additional REX switches and sensors to the door cassette if needed.

Wiring the REX With an Electromagnetic Lock
For safety-related applications, wire the REX directly to the mag lock. You can wire additional REX switches and sensors to the door cassette if needed.

AUX

AUX Inputs
The Verkada AC42 has two AUX inputs. The AC42 expects by default both AUX inputs to be NORMALLY OPEN (NO) however this behavior can be changed to NORMALLY CLOSED (NC) in command.

With the AC42’s AUX inputs you can hook up devices such as intercoms and panic buttons. All associated events will be logged in Command. The AUX Inputs can be programmed in Command to initiate a lockdown or unlock a door (or a set of doors). We will be expanding support for more auxiliary devices in the future.
Example AUX Intercom Wiring Diagram

AUX Outputs
Additionally, the AC42 has two AUX Form C relays. These two AUX relays can be programmed to trigger an output during a lockdown. This allows you to activate a dialer, strobe light, sounder, etc. when a lockdown is initiated.

FAI set up 1/2

Normally Closed Input

A normally closed fire alarm input from an FACP should be wired across FAI- and FAI_P.
A jumper wire must be connected across FAI- and FAI P.
When the contact is open, this activates the FAI in the AC42 which disables 12V/24V power to all 4 relay outputs.
In other words all wet locks will be effectively dry while the FAI is triggered.

Important: FAI+ and FAI_P must be locally jumpered in this configuration.

Normally Open Input
A normally open fire alarm input from an FACP should be wired across FAI+ and FAI-.
When the contact is closed, this activates the FAI in the AC42 which disables 12V/24V power to all 4 relay outputs. In other words, all wet locks will be effectively dry while the FAI is triggered.

FAI set up 2/2

Latching
An optional latching input from the FACP may be connected in a normally closed configuration across L and L. When latching is enabled, FAI is active; it will remain active until reset. A reset is achieved if FAI is deactivated and the latching input is temporarily open.

Daisy Chaining
Two AC42 FAI may be daisy chained. The FAI (and latching states) from the primary AC42 will be repeated in the secondary (daisy chained) unit.

Connect
Connect the AC42 to your network using the Ethernet port located at the bottom of the controller. Connect the AC42 power supply to your standard power outlet (100-240VAC).
To add the AC42 to your Verkada Command account, enter the serial number printed on the AC inlet (or the order number) to the “Add Device” page: command.verkada.com/add-device

Battery backup (Optional)

A 12 volt 4.5Ah battery can be connected to the female F2 connectors located in the AC42. You can place one battery at the bottom-right of the AC42 enclosure. We recommend to use and sell a 12 volt 4.5Ah sealed lead acid rechargeable battery that is UL1989 recognized.

Important
While connecting the battery leads, be sure to isolate the positive battery terminal (red wire) during installation.

Secure the black wire in the AC42 to the negative terminal of the lead acid battery.
Secure the red wire in the AC42 to the positive terminal of the lead acid battery.
Ensure both wires are securely connected to their respective battery terminals. Failure to properly connect the battery may damage the device.

Appendix

Support
Thank you for purchasing this Verkada product. If for any reason you’re experiencing issues or need assistance, please contact our 24/7 Technical Support Team immediately. Sincerely,
The Verkada Team verkada.com/support.
Verkada Inc. 406 E 3rd Ave, San Mateo, CA 94401 sales@verkada.com.
All specifications are subject to change without notice Copyright © 2023 Verkada Inc. All rights reserved.

Connect

Connect the AC42 to your network using the Ethernet port located at the bottom of the controller. Connect the AC42 power supply to your power outlet.
Supports 100- 240VAC (50/60Hz).
After connecting the AC42 to the network and power, visit: verkada.com/start
For detailed installation instructions, visit: verkada.com/support