CAMDEN CX-33, Installation Instructions Manual

Page 7 of 28

CX-33 Advanced Logic Relay Installation Instructions

Section 3L

Mag Lock with N.O. Fire Alarm  
(Mode 11)

Commonly seen in hospital corridors, this version of a 
switching network (make/break relay) is specifically designed 
for doors with mag locks.

A wall switch signals the relay, which unlocks, and opens the 
door for an adjustable time. Utilizing the door position switch, 
the CX-33 will not re-apply power to the magnetic lock until 
the door is fully closed. The relay also provides for a normally 
open Fire Alarm input, which when activated, unlocks the 
door and disables the wall switch inputs.

Refer to 

Diagram 11

, (Page 22) for the following 

connections:

Momentary switches connect to DRY 1 and/or WET terminals. 
Maintained devices connect to DRY 2 input (optional). The N.O. 
Fire Alarm signal is wired to DRY 3 input, and the Door Position 
Switch connects to DRY 4 input. The circuit must be closed 
when the door is closed, and open when the door opens.

The magnetic lock connects to the Common and N.C terminals 
of Relay 1. The door operator connects to the Common and 
N.O. terminals of Relay 2. Relay 3 output is optional.

Once input and output connections are made, program the 
unit according to the General Programming Instructions on 
page 1, and walk-test the installation. Timing adjustments 
may need to be made.

It is NOT recommended to add the “Delay-on-activate”  
(or nuisance delay) feature in this mode!

Once the desired operation is achieved, proceed to Section 
4, Pg 9 for 

System Inspection Instructions

.

Section 3M

Mag Lock with N.C. Fire Alarm  
(Mode 12)

This mode is identical to Mode 11 (Section 3L) except the 
Fire Alarm input is a N.C. circuit (rather than N.O.). See 
previous section for wiring and adjustments, & refer to 

Diagram 12

, (Page 23).

Section 3N

Special Purpose Sequencer  
(Mode 13)

In this mode, Input 1 sequences Relays 1 & 2, Input 2 
sequences Relays 2 & 3. Input 3 sequences Relays  

Section 3K

Low Energy SAM Plus  
(Mode 10)

This mode combines a Low-Energy Secondary Activation 
Module (SAM) with a switching network (aka make/break 
relay). Utilizing a door position switch input, this mode 
enables or disables a door mounted presence sensor. The 
sensor is put into the circuit when a wall switch is pressed 
(a Knowing Act). This allows an object or person in the path 
of the door to be detected. The door will not close until the 
object or person leaves the door swing path. The sensor 
remains in the circuit until the door is closed.

When the door is opened manually, the safety sensor is not  
in the circuit and the door operator functions as a manual 
door closer.

A unique feature of the CX-33 is the automatic reset feature. 
If a switch has been pressed, but the door has not opened 
within 60 seconds (because it is locked, for instance), the unit 
will reset. This will save wear and tear on the lock and operator.

In addition, one input and two relays are provided for the 
switching network function.

Refer to 

Diagram 10

, (Page 21) for the following connections.

SAM Circuit:

Connect the momentary activating switch(es) to DRY 3 input. 
The door mounted sensor connects to DRY 2 input, and the 
magnetic contact switch connects to DRY 4 input. The contact 
switch circuit must be closed when the door is closed, and 
open when the door opens.

 
Relay 3 output is to be connected to the Activate circuit of the 
door operator.

Optional Switching Network:

Wire the activating device(s) to DRY 1 terminals. Wire the 
outputs as shown to Relays 1 & 2.

Once input and output connections are made, program the 
unit according to the General Programming Instructions on 
page 1, and walk-test the installation. Timing adjustments 
may need to be made.

It is NOT recommended to add the “Delay-on-activate”  
(or nuisance delay) feature in this mode!

Once the desired operation is achieved, proceed to Section 4, 
Pg 9 for 

System Inspection Instructions

.

CX-33 Advanced Logic Relay Installation Instructions