CX-33 Advanced Logic Relay

This Package Includes:

• 2 - #6 x 3/4" Self Tapping Screws
• 1 - 1-1/2" x 1-1/2" Velcro
• 1 - 50Ω, 1W Resistor

1. General Description

The CX-33 is the latest generation multi-purpose logic control, designed for versatility and user-friendliness with easy-to-understand terminology and adjustments. Its 15 different operating modes make it suitable for nearly every automatic door or security application.

It features 5 inputs (4 dry, and 1 wet or powered), offering flexibility for various activating devices. The wet or powered input is useful for connecting to 3-terminal radio receivers, telephone entry systems panels, or for motors used as a Lock-out Relay.

Programming is made easy with 3 buttons (including separate UP and DOWN buttons) and a large 3-segment display for clear viewing.

The unit includes 3 heavy-duty 3 amp relays for varied sequencing applications. For example, the third relay is ideal for "Occupied" or "In Use" signage in restroom applications.

(Note: Outputs are dry, not powered.)

2. Installation

IMPORTANT: Do not apply power to the unit until you have read the instructions fully and made the required adjustments.

Mounting

The CX-33 should be mounted in a clean, dry location, protected from the elements. Suitable locations include inside a metal enclosure, an operator header, or above a false ceiling.

The display and LEDs are visible through the clear plastic case, which also has cutouts for programming buttons and terminal strips. Once wired and adjusted, the unit can be tucked into the operator header or affixed using the supplied Velcro or two sheet metal screws.

Wiring

Wiring depends on the desired mode, but general connections are as follows:

The unit operates on 12 or 24 volts, AC or DC. Connect to Terminals 1 & 2, which are non-polarity sensitive.

NOTE: A regulated power supply is highly recommended for certain modes, such as barrier-free washroom applications where strike power may be maintained for extended periods. Camden offers the CX-PS13 regulated power supply.

General Programming Instructions

To enter program mode, press the MENU button. The current operating mode will display. Pressing MENU cycles through all options:

Use UP and DOWN buttons to change values. Holding a button increases scrolling speed.

The unit returns to Operating Mode after 10 seconds of inactivity. Returning within 10 minutes resumes programming; otherwise, it restarts from the first menu item.

Factory Default Values:

Table 1

Programmable Inputs

Dry and Wet Inputs can be programmed for Normally Open (N/O) or Normally Closed (N/C) contacts. Table 1 shows default settings.

Input changes are saved across power cycles. If a mode is changed, inputs revert to that mode's defaults. Changing back to a previous mode restores its default input settings.

Wet Input: Activates at 4.5V AC/DC, deactivates at 2.8V AC/DC. Older panels might have stray voltage (over 3V) that prevents deactivation. Use the provided 50Ω, 1W resistor in series with the Wet Input in such cases.

3. Set-Up Instructions

The CX-33 offers 15 distinct modes for various applications:

Mode 1: 3-Relay Switching Network

Sequences all 3 relays in one direction using "mixed mode triggering." Applications include basic strike and operator installations, smoke evacuation, stairwell doors, or latching applications.

Wiring: Refer to Diagram 1 (Page 11). For momentary devices, use DRY 1 or WET 1. For maintained devices to hold relay 1, use DRY 3. For maintained devices to hold relays 2 & 3, use DRY 2. Input 4 is for latching applications, toggling relays 2 & 3 with each closure.

Diagram Description: The CX-33 is connected to a 12-24V AC/DC power source. Momentary switches connect to Input 1. A powered signal (e.g., RF Receiver) connects to Dry 1. Maintained signals connect to Dry 2 and Dry 3. A FIRE input connects to Dry 4. Outputs connect to a Door Operator and a Fail-Secure Electric Strike. A momentary input can latch Relays 2 & 3, releasing them with a second signal.

After wiring, program the unit per General Programming Instructions and walk-test. Adjust timing as needed. The "Delay-on-activate" feature (Step 8) can be used for nuisance delay; set to 0.0 if not needed.

Mode 2: 2-Door Timed Airlock

Ensures only one door in an airlock is open at a time, using door position switches (e.g., Camden CX-MDC). Each output hold time is adjustable from 1-50 seconds. Allows one door to have an electric lock and operator, or just locks.

Wiring: Refer to Diagram 2 (Page 12). Wire activating devices for Door #1 to DRY 1 and Door #2 to DRY 2. Connect door contact switches to Inputs 3 & 4 (circuit closed when door is closed).

Diagram Description: Two doors are shown, each with an activating switch (Door 1 to DRY 1, Door 2 to DRY 2) and a magnetic contact switch (Door 1 to Input 3, Door 2 to Input 4). Outputs connect to Door 1 Operator, Door 2 Operator, and an optional Electric Lock for Door #1. The diagram notes that if an electric lock isn't used, H1 and D1 timers should be set to zero, and D2 is not used.

If a lock is not used, set H1 & D1 timers to 0.0; Relay 1 will be ignored. Program and walk-test. "Delay-on-activate" is not recommended for this mode.

Mode 3: 2-Door Latching Airlock

Similar to Mode 2, but uses latching activation. One switch activation opens (unlocks) the door, and a second activation on the same input closes (locks) it. Supports one door with an electric lock and operator.

Features an adjustable "Walk-away" time: if the door input is activated but the door isn't opened within the set time, the relay resets (re-locks). Both doors have adjustable timers; setting to zero disables this feature.

Wiring: Refer to Diagram 3 (Page 13). Wire activating devices for Door #1 to DRY 1 terminals.

Diagram Description: This diagram shows a setup similar to Mode 2, with activating switches for Door 1 (DRY 1) and Door 2 (DRY 2), and magnetic contact switches for both doors (Inputs 3 & 4). Outputs connect to Door 1 Operator, Door 2 Operator, and an optional Electric Lock for Door #1. Notes indicate that if Relay 1 operation is not desired, H1 & D1 timers can be set to zero.

Program and walk-test. "Delay-on-activate" is not recommended.

Mode 4: Bi-Directional Door Sequencer

Sequences all 3 relays in both directions. Can be configured as a basic 2-door sequencer or a more complex one with 4 switch inputs and an electric lock.

Wiring: DRY 1 or WET 1 inputs sequence Relays 1 → 2 → 3. DRY 2 input sequences Relays 3 → 1 → 2. Input 3 sequences Relays 1 → 2. Input 4 activates Relay 3 only.

Diagram Description (Diagram 4a): A simple bi-directional sequencer. Door #1 Push Switch connects to DRY 1. Door #2 Push Switch connects to DRY 2. An optional Wet output for an RF receiver is shown. Outputs connect to Door #1 Operator and Door #2 Operator.

Diagram Description (Diagram 4b): A 3-relay bi-directional sequencer. Activating Switch for Door 1 connects to DRY 1, and for Door 2 to DRY 2. Optional switches control sequences (Relays 1&2, Relay 3). Outputs connect to Door #1 Operator, Door #2 Operator, and an Electric Lock for Door #1.

If a relay is not desired, set its time delays to zero. Program and walk-test. "Delay-on-activate" can be added via Step 8.

Mode 5: Apartment/Condo Application

Controls apartment/condo front doors. Allows tenants to buzz visitors in via an intercom system. A courtesy switch enables visitor entry after the lock releases, and an inside switch always unlocks and opens the door.

Wiring: Refer to Diagram 5 (Page 16). CX-33 allows dry or powered momentary connections to the Interphone panel (DRY 1 and WET inputs). Wire "Courtesy Switch" to DRY 2, and inside switch to DRY 3. Optional Key switch can connect to DRY 1 (unlock only) or DRY 3 (unlock/open). DRY 4 is for Fire Panel Input.

Diagram Description: The CX-33 connects to 12-24V AC/DC power. Inputs include: DRY 1 for an Apartment Interphone Panel (dry contact or powered signal), DRY 2 for a Vestibule/Courtesy Switch, DRY 3 for an Inside Switch, and DRY 4 for FIRE. Outputs are Relay 1 for a Fail-secure Electric Strike and Relay 2 for a Door Operator. An optional 50Ω resistor is shown for stray voltages.

Outputs: Output #1 for electric lock, Output #2 for door operator. Program and walk-test. "Delay-on-activate" can be added via Step 8.

Mode 6: Access Control Application

Unlocks a door for an extended time upon receiving a maintained signal from an access system or time-clock. An exterior momentary switch allows door activation during this period. The door relocks when the signal is released, and the exterior switch is disabled.

Wiring: Refer to Diagram 6 (Page 17). CX-33 allows dry/powered maintained connections for Access System/time clock (DRY 1/WET). Wire "Exterior momentary Switch" to DRY 2, and inside momentary switch to DRY 3. Optional Key switch to DRY 1 or DRY 3. DRY 4 Input is for Fire Alarm Panel.

Diagram Description: The CX-33 connects to 12-24V AC/DC power. Inputs include: DRY 1 for an Access System/Time clock (dry or powered maintained signal), DRY 2 for an Exterior momentary Switch, DRY 3 for an Inside momentary Switch, and DRY 4 for FIRE. Outputs are Relay 1 for a Fail-secure Electric Strike and Relay 2 for a Door Operator. An optional Keyswitch can be connected to DRY 1. An optional 50Ω resistor is shown.

Outputs: Output #1 for electric lock, Output #2 for door operator. Program and walk-test. "Delay-on-activate" is not recommended.

Mode 7: Normally Unlocked Restroom

Provides control for a single-occupant barrier-free washroom. Allows locking from the inside via a Push-to-Lock button when the door is closed. Exterior access is electronically removed. Exit is via manual lever or interior wall switch. The door remains unlocked upon closure.

Wiring: Refer to Diagram 7 (Page 18). Switches (Outside Wall, Inside Wall, Push-to-Lock) are N.O. momentary. Door Contact Switch circuit must be closed when the door is closed and open when open.

Diagram Description: The CX-33 connects to 12-24V AC/DC power. Inputs include: DRY 2 for an Outside Wall Switch, DRY 3 for an Inside Wall Switch, and DRY 4 for a PUSH TO LOCK switch. A Magnetic Contact Switch is connected to DRY 3 (normally open when door is open). Outputs are Relay 1 for a Fail-Safe Electric Strike, Relay 2 for a Door Operator, and Relay 3 for "Occupied"/"Door Locked" Signage.

A fail-safe electric strike connects to Relay 1. Automatic door operator to Relay 2. Signage to Relay 3. Program and walk-test. "Delay-on-activate" is not recommended.

Mode 8: Normally Locked Restroom

Similar to Mode 7, but the door is normally locked. Allows locking from the inside via a Push-to-Lock button. Exterior ingress (Keypad, Key switch, Prox-reader) is on Input 2.

Wiring: Refer to Diagram 8 (Page 19). Outside ingress (Keypad, Key switch, Prox-reader) connects to DRY 2. Inside wall switch and Push-to-Lock switch connect to DRY 3. Door Contact circuit must be closed when the door is closed and open when open.

Diagram Description: The CX-33 connects to 12-24V AC/DC power. Inputs include: DRY 2 for an Outside Keypad/Key switch/Prox Reader, DRY 3 for an Inside Wall Switch, and a PUSH TO LOCK switch. A Magnetic Contact Switch is connected to DRY 3. Outputs are Relay 1 for a Fail-secure Electric Strike, Relay 2 for a Door Operator, and Relay 3 for "Occupied"/"Door Locked" Signage.

A fail-secure strike connects to Relay 1. Automatic door operator to Relay 2. Signage to Relay 3. Program and walk-test. "Delay-on-activate" is not recommended.

Mode 9: Lock-out Relay Plus

Combines a lintel mount safety sensor lock-out relay (LOR) with a switching network. Utilizes voltage sensing for motors/controls up to 120V AC/DC. Hold timer matches door closing time. Cancellation inputs for rail-mounted door beams.

Wiring: Refer to Diagram 9 (Page 20). LOR Circuit: Parallel connection to motor wires. For AC motors, polarity is not an issue. For DC motors, polarity may be sensitive. Input 1 is for photo beam N.O. relay contacts. Relay 3 output connects in series with the safety device and operator's safety circuit.

Diagram Description: The CX-33 connects to 12-24V AC/DC power. Inputs include: Input #2 for Momentary Switches, Input #3 for Maintained signal for Relay 2, and Input #4 for Momentary signal for Relay 2. A Wet Input is shown for AC/DC motors up to 120V. Outputs connect to a Door Operator and a Fail-Secure Electric Strike. Door Beams (rail mounted) are shown for cancellation. A Presence Sensor is also depicted.

Optional Switching Network: Wire activating devices to DRY 1, DRY 2, or DRY 3 terminals. Program and walk-test. "Delay-on-activate" is not recommended.

Mode 10: Low Energy SAM Plus

Combines a Low-Energy Secondary Activation Module (SAM) with a switching network. Enables/disables a door-mounted presence sensor via a wall switch (Knowing Act). Detects objects in the door path; door won't close until the path is clear. Sensor remains active until the door is closed. Automatic reset feature: unit resets if a switch is pressed but the door doesn't open within 60 seconds.

Wiring: Refer to Diagram 10 (Page 21). SAM Circuit: Momentary switches to DRY 3. Door-mounted sensor to DRY 2. Magnetic contact switch to DRY 4 (circuit closed when door closed, open when door open). Relay 3 output connects to the door operator's activate circuit.

Diagram Description: The CX-33 connects to 12-24V AC/DC power. Inputs include: DRY 2 for a Door Mounted Sensor, DRY 3 for a Momentary Activating Switch, and DRY 4 for a Magnetic Contact Switch. Optional Switching Network inputs are on DRY 1. Outputs connect to a Door Operator and a Fail-Secure Electric Strike.

Optional Switching Network: Wire activating devices to DRY 1. Program and walk-test. "Delay-on-activate" is not recommended.

Mode 11: Mag Lock with N.O. Fire Alarm

Designed for doors with mag locks. A wall switch unlocks the door for an adjustable time. The CX-33 re-applies power to the mag lock only after the door is fully closed. A normally open Fire Alarm input unlocks the door and disables wall switch inputs when activated.

Wiring: Refer to Diagram 11 (Page 22). Momentary switches to DRY 1 and/or WET. Maintained devices to DRY 2 (optional). N.O. Fire Alarm signal to DRY 3. Door Position Switch to DRY 4 (circuit closed when door closed, open when door open).

Diagram Description: The CX-33 connects to 12-24V AC/DC power. Inputs include: DRY 1 for Momentary Switches, DRY 2 for Maintained Signal (optional), DRY 3 for N/O Fire Alarm Input, and DRY 4 for Door Position Switch. Outputs are Relay 1 for a Mag Lock and Relay 2 for a Door Operator.

Mag lock connects to Relay 1 (Common & N.C.). Door operator to Relay 2 (Common & N.O.). Relay 3 is optional. Program and walk-test. "Delay-on-activate" is not recommended.

Mode 12: Mag Lock with N.C. Fire Alarm

Identical to Mode 11, but uses a Normally Closed (N.C.) Fire Alarm input.

Refer to Diagram 12 (Page 23) for wiring and adjustments.

Mode 13: Special Purpose Sequencer

Input 1 sequences Relays 1 & 2. Input 2 sequences Relays 2 & 3. Input 3 sequences Relays 1-2-3. Input 4 sequences Relays 1-3-2.

Wiring: Refer to Diagram 13 (Page 24). Program and walk-test. Perform timing adjustments.

Diagram Description: The CX-33 connects to 12-24V AC/DC power. Multiple push switches are connected to DRY 1, DRY 2, DRY 3, and DRY 4 to control different relay sequencing combinations. Outputs connect to Door #1 Operator, Door #2 Operator, and Door #3 Operators.

"Delay-on-activate" can be added via Step 8.

Mode 14: Delayed Relay Activation

Unique mode where Input 1 causes Relay 1 to fire immediately, but Relays 2 & 3 only fire after a pre-set elapsed time. User must push and hold the switch for this duration.

Wiring: Refer to Diagram 14 (Page 25). Fire alarm input on DRY 2 (N/O). Bypass/Shunt keyswitch on DRY 3 (maintained). N/C door position switch on DRY 4.

Diagram Description: The CX-33 connects to 12-24V AC/DC power. Inputs include: DRY 1 for a PUSH & HOLD Switch, DRY 2 for a Fire Panel Input (N/O), DRY 3 for a Shunt/Bypass Switch (maintained), and DRY 4 for a Magnetic Contact Switch (N.C.). Outputs include an Electric Lock, a Local Siren/Horn, and an Alarm/Bypass Light. Notes indicate this mode is not UL compliant for delayed egress.

Outputs: Output 1 for siren, Output 2 for electric lock, Output 3 for status monitoring. Program and walk-test. Adjust H1 for push/hold time, D1 for lock/operator time, H2 for auto door operator delay. D2 and H3 are not used. "Delay-on-activate" is not recommended.

Mode 15: Bi-Directional Door Sequencer with Access Control Input

Sequences all 3 relays in both directions. Access control systems can connect to the WET input to unlock the door before sequencing. The door remains unlocked while a maintained signal is present on the WET input.

Wiring: DRY 1 input is active only with a WET input signal. DRY 1 sequences Relays 1 → 2 → 3. DRY 2 sequences Relays 3 → 1 → 2 and always unlocks the door first. Input 3 sequences Relays 1 → 2. Input 4 activates Relay 3.

Diagram Description (Diagram 15): The CX-33 connects to 12-24V AC/DC power. Inputs include: DRY 1 for Activating Switch Door 1, DRY 2 for Activating Switch Door 2, DRY 3 for Access System/Time clock (powered & maintained signal), and DRY 4 for Optional Switches. Outputs connect to an Electric Lock (Door #1) and Door #2 Operator, Door #1 Operator.

Diagram Description (Diagram 15b): Similar to Diagram 15, but for a maintained dry signal from the Access system/Time clock.

If a relay is not desired, set its time delays to zero. Program and walk-test. "Delay-on-activate" can be added via Step 8.

Mode 7: Lock-Down Mode

During normal operation, all-active switches (Input 1) trigger the door operator. A remote "Lock-Down" switch activates the door lock and disables the door switch input. A separate output can drive a status LED/light. Pressing the "Reset" button (Input 4) unlocks the door and resets the system.

Wiring: Refer to Diagram 7a (Page 26). All-active switches and Lock-down Switch are N.O. RESET switch is N.C. Fail-safe electric strike or mag lock should be used. Input 2 allows for an optional secure entry keypad or fire alarm connection.

Diagram Description: The CX-33 connects to 12-24V AC/DC power. Inputs include: DRY 2 for an Outside Wall Switch, DRY 3 for an Inside Wall Switch, and DRY 4 for a PUSH TO LOCK switch. An optional Secure Entry/Reset keypad is also shown, potentially connected to DRY 4. A Magnetic Contact Switch is connected to DRY 3. Outputs are Relay 1 for a Fail-Safe Electric Strike, Relay 2 for a Door Operator, and Relay 3 for a Lock-Down Indicator/Signage.

Program and walk-test. "Delay-on-activate" can be added via Step 8.

4. System Inspection Instructions

After installation and operational check:

1. Place applicable labels on the door (per ANSI A156.10 or A156.19 guidelines).
2. Instruct the owner on door system operation and walk-testing procedures, to be checked daily.
3. Instruct the owner on procedures for damaged components.
4. Strongly recommend annual inspection (twice yearly as part of a service agreement, or at least yearly per AAADM guidelines).

5. Specifications

6. Warranty

Camden Door Controls guarantees the CX-33 to be free from manufacturing defects for 3 years from the date of sale. If the unit fails within this period, it may be returned to the factory for repair or replacement at Camden's discretion.

Camden extends no other warranties, expressed or implied, regarding function, performance, or service.