Camden CX-12 - Installation Manual

CX-12 Switching Network

& Bi-Directional Door Sequencer

Installation Instructions

Page 1 of 10

Section 1__________________
General Description

The CX-12 is the latest generation multi-purpose
timer. It is designed to be versatile yet user friendly
with

easy

to

understand

terminology

and

adjustments. (It supersedes Model CX-11

Ultra

)

Used as a make/break relay (or Switching Network) it
eliminates the binding of locked automatic doors, by
delaying the door operator until the strike or
electromagnet (de) activates first.

A

new

feature of this model is the ability to select one

of

4 Modes of operation

– momentary; maintained

with Relay 1 held

; maintained

with Relay 2 held

; and

bi-directional door sequencing (

SEE DIAGRAM 04)

.

In the

Momentary

position, even a stuck switch input

will allow the door to time out and close, thereby
providing security to occupants. The CX-12 will
however, still operate normally if one of the other
inputs is activated. Essentially, it ignores the faulty
activation source, as all inputs are isolated.

The inputs to the CX-12 may be either dry or wet
(powered), meaning that 3-terminal radio receivers
may be connected directly to the CX-12 without fear
of malfunction.

SEE DIAGRAM 01

.

Additionally, we provide a direct connection from an
apartment interphone panel. Only Relay #1 (strike)
will operate when a voltage is applied to this input. A
vestibule courtesy switch will be energized for the
time set by Pot. 1.

SEE DIAGRAM 03 a or b.

Select

Relay 1 Maintained

for an Access Control

application. When a maintained signal is applied to

WET 1

input, the lock will remain energized, while the

DRY 2

input allows a wall switch to open the door. An

input on

DRY 1

will always unlock and open the door.

SEE DIAGRAM 02b.

Select

Relay 2 Maintained

if you are connecting the

CX-12 to a fire alarm panel, or to a presence sensor.
In this mode the lock will fire momentarily but the
operator relay will be held in as long as the input is
maintained.

SEE DIAGRAM 02a.

For latching (ratchet or alternate action) functions, we
recommend our Model CX-1000/78 multi-purpose
timer, or Model SA-1 Switching Network.

IMPORTANT

: Do not apply power to the unit until

you have read the instructions fully and made the
required adjustments.

Section 2__________________
Installation

Mounting

The LED’s are visible through the wrap-around
sleeve, which also has cutouts for adjusting the
potentiometers, and setting the dip-switch. Once the
unit has been adjusted, it may be tucked up into the
operator header or affixed using the supplied Velcro.

Wiring

Wiring of this unit is dependent on the mode desired,
however

the

following

commonalities

apply.

Note:

Do not wire

Safety devices

to the CX-12.

If installed, wire your safety device directly to the
operator control box as per usual.

CAUTION:

Do not apply power to the unit until all

secondary wiring is complete, and dip-switches have
been set.

Both relay outputs are Form C and are rated at 3
amps maximum. Use relay # 1 for the strike or
electromagnet. Generally the

N.O. & COM.

terminals

(#3 & 4) are used for a strike, and

COM & N.C.

(#4 &

5) are used with an electromagnet.

The door operator will be wired to relay #2

N.O. &

COM

terminals (#6 & 7). In a door sequencing

application, door 1 is relay #1, and door 2 is relay #2.

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