Camden CX-SA-1 User Manual

SA-1 FEATURES:

CAN BE POWERED FROM 12 TO 24 VOLTS
AC OR DC

SEPARATE MOMENTARY AND EXTENDED
TRIGGER INPUTS INCREASE APPLICATIONS

CONTROLLED RELEASE OF LOCK RELAY
WHILE MAINTAINING OPERATOR RELAY FOR
SPECIAL DOOR HOLD OPEN APPLICATIONS.

DRY CONTACT AND HOT TRIGGER INPUTS

HOT TRIGGER INPUTS CAN BE AC OR DC

LOCK RELAY, OPERATOR RELAY, AND DELAY
TIMERS CAN BE INDIVIDUALLY ADJUSTED
FROM 1/2 TO 30 SECONDS.

ALL TIMERS USE FIXED TIME RANGE TRIM
POTS AND TIME BLOCK ADD'N SWITCHES
TO KEEP TIME SETTING EASY

The terminal strip provides access to the lock & operator
relay contacts, trigger inputs, and power connections.

fig. 1

C NC NO

LOCK

RELAY

C NC NO

+ TRIGGER
OUT

OPERATOR

RELAY

INTERNAL
GND REF

MOMENTARY
TRIGGER INPUT

12-24 VOLTS
AC OR DC ­NO INPUT
POLARITY

EXTENDED
TRIGGER INPUT

A SMALL TIP TO HELP PROTECT
YOUR SA-1 DOOR SEQUENCER

Locks such as maglocks and door strikes are
essentially large electro-magnets. When power
is removed from such locks, a high voltage is
generated by the collapsing magnetic field. This
voltage (called Back EMF or Kickback) will
eventually damage the relay contacts.

Model #

CX-

The SA-1 Door Sequencer is a highly versatile
circuit designed to allow easy interface solutions
to a wide variety of door installation situations.
A single input can unlock and open a door, re­ engage the lock, hold the door open for an
indefinite period of time, and automatically close
and re-secure the door at the end of the trigger.

The SA-1 MK5 is a digital version of the MK4.
Because it is digital, we've been able to improve
its performance and add some requested features.
Timer setting is more accurate and you can now
use AC voltage for a hot trigger input reducing the
need for extra interface relays. The latest versions
of this product have improved noise immunity.

SA-1 (MK5)

SEPARATE LEDS SHOW DELAY TIMER, AND
LOCK AND OPERATOR RELAY STATUS FOR
TRUE INDICATION AT ALL TIMES.

WILL RETRIGGER BEFORE THE SEQUENCE
IS FINISHED

FULL 36 MONTH WARRANTY FROM DATE OF
PURCHASE

Specifications

OPERATING VOLTAGE.....12 through 24 Volts, AC or DC

STAND BY CURRENT........... DC 12 VOLTS - 8 mA

AC 24 VOLTS - 18 mA

OPERATING CURRENT........ DC 12 VOLTS - 48 mA

AC 24 VOLTS - 63 mA

TRIGGER INPUT ............. LESS THAN .5 mA

6-48 VDC, 12 - 48 VAC

RELAY CONTACTS................ 2 A @ 24V, FORM 'C'

SIZE 105mm (4.1") WIDE, 85 mm (3.4") HIGH
15 mm (0.7") DEEP

Fortunately, it is possible to virtually eliminate
these effects by simply connecting the proper
suppression device across the relay contacts.
This device is called a MOV (Metal Oxide
Varistor). Use the supplied 35 volt MOV with
either AC or DC power to the electric lock.

RELAY CONTACT TO CONTROL LOCK

SUPPLY LEAD OF
POWER SUPPLY

MOV

MOV

RETURN LEAD OF

LOCK

NO CONNECTION POLARITY FOR MOV

USE THIS COMPLIMENTARY MOV
TO EXTEND THE LIFE OF YOUR SA-1

POWER SUPPLY

fig. 2

Latching Relay Option

A flick of a switch changes the SA-1 into a
Latching Relay. The 1st push of a button starts
the Sequencer cycle - the same as the other
modes. However, one or both relays will remain
on after the timers have expired until the button
gets pressed again.

With the latching relay operation triggered off the
momentary input, the extended trigger remains
operational. The activation of the extended trigger
overrides the latching relay so the relays won't
be latched on after the extended trigger ends.

5502 Timberlea Dr
Mississauga ON
L4W 2T7

Toll-Free: [phone]
Fax No.: [phone]

or, email us... [e-mail]

Printed in Canada

2006 Camden Door Controls Inc.

Momentary mode triggering

The momentary mode is designed to accept either
dry contact (N.O.) or hot (applied voltage) triggers
of arbitrary length. Once the preset period for each
of the timers has expired, that function will release
regardless of whether or not the trigger input has
been removed. The momentary (MOM TRIG) is
selected by taking the +OUT output to the MOM
TRIG input via dry contacts, or placing 12-24 VDC
between the MOM TRIG input and ground (GND
REF) terminals.

Latched mode triggeringLatched mode triggering

This switch in the "down" position changes the

LOCK

fig. 3

DELAY

OPER

This switch in the "down" position changes the

momentary trigger into the latching mode trigger.

momentary trigger into the latching mode trigger.

In this mode, the operator relay will stay on

In this mode, the operator relay will stay on

indefinitely. The Lock relay may also be maintained

indefinitely. The Lock relay may also be maintained

depending upon the position of the control switch.

depending upon the position of the control switch.

(See Fig. 4) The next trigger will release both relays

(See Fig. 4) The next trigger will release both relays

immediately even if the timers haven't expired.

immediately even if the timers haven't expired.

Activation of the extended trigger will override the

Activation of the extended trigger will override the

latching mode. This prevents the relays from

latching mode. This prevents the relays from

remaining latched on after the extended trigger ends.

remaining latched on after the extended trigger ends.

Extended mode triggering

The extended mode is designed to accept either
dry contact (N.O.) or hot (applied voltage) triggers
of arbitrary length. The operator relay will be
maintained for the duration of trigger input. The lock
relay may also be maintained depending upon the
position of the control switch (see fig.4). This
allows the door to be held open at length without
damaging intermittent duty strikes. If the trigger
is removed prior to any (or all) timer(s)expiring,
the SA-1 will default to momentary mode.

Lock relay release during hold open function

When using the extended trigger mode or the
latching relay mode, the lock relay can match
the operator relay output or be released when
the lock timer times out.

To maintain the operator relay and keep the lock
insecure, move the switch to the up position as
shown. If the switch is in the lower position after
the lock timer times out, the lock relay will release
regardless of the state of the extended trigger
input or the mode selected.

fig.4

LOCK

DELAY

OPER

Adjusting delay timer, and lock and operator
relay time

The trim pot corresponding to each
timer is marked. By turning the pot
screw to the right the run time is
increased from to 10 seconds.

Example: To set a time of 15
seconds, set trimpot to 5 seconds
& move 1 switch down, for 25
seconds, slide 2 switches down.

LOCK DELAY OPER

TIMER ADJUST - EACH
SW DOWN ADDS 10 SEC

MAX
TIME

LOCK
TIME ADJ.

MAX
TIME

DELAY
TIME ADJ.

MAX
TIME

OPERATOR
TIME ADJ.

LOCK

DELAY

OPER

fig.5

Mixed mode triggeringMixed mode triggering

The SA-1 has been designed to give you the
greatest flexibility in your installations. There
are only a few things to remember in selecting
your trigger inputs. The extended trigger ON
blocks both the momentary and latching modes.
Therefore this is the trigger to use for door hold
open applications. However, the momentary
trigger left active will not prevent the operation
of the extended trigger. This makes it the
ideal input for those situations where the
button is prone to sticking.

Extended mode example

Long term door hold open (lock

re-secures after door opens)

Mk IV

SA-1

LOCK
RELAY
C NO NC

or

12-24V

+

EXTENDED
TRIGGER INPUT

OPERATOR
RELAY
C NO NC

POWER

OUT

fig.6

NOTE: USE THIS HOOKUP FOR INTERMITTENT DUTY STRIKES

POWER
12 TO 24
VOLTS
AC or DC

MAINTAINED CONTACT SWITCH
(KEYSWITCH, ETC)

FORM 'C' RELAY
PROVIDES THE
CLOSURE REQUIRED

TO ELECTRIC
LOCK (STRIKE,
MAG, BOLT, ETC.)

Triggering from a hot output

Mk IV

LOCK
RELAY
C NO NC

SA-1

or

12-24V

MOMENTARY
TRIGGER INPUT

GROUND REF

OPERATOR
RELAY
C NO NC

POWER

POWER
12 TO 24
VOLTS
AC or DC

AC or DC

GND

FORM 'C' RELAY
PROVIDES THE
CLOSURE REQUIRED

TO ELECTRIC
LOCK (STRIKE,
MAG, BOLT, ETC.)

EXTERNAL POWER
FROM FOREIGN
EQUIPMENT (SUCH
AS ENTRY PHONE)

fig 7

Triggering from hot output and
dry contacts in combination

Mk IV

fig .8

12-24V

OUT

SA-1

LOCK
RELAY
C NO NC

or

+

MOMENTARY
TRIGGER INPUT

GROUND REF

OPERATOR
RELAY
C NO NC

POWER

NOTE: The diode connecting the foreign equipment is to protect
the foreign equipment and is not required by the SA-1

POWER
12 TO 24
VOLTS
AC or DC

1N4005

AC or DC

EXTERNAL POWER
FROM FOREIGN
EQUIPMENT (SUCH

GND

AS ENTRY PHONE)

FORM 'C' RELAY
PROVIDES THE
CLOSURE REQUIRED

TO ELECTRIC
LOCK (STRIKE,
MAG, BOLT, ETC.)

Vestibule control examples

Operating 2 door vestibule, no

electric lock

Mk IV

LOCK
RELAY
C NO NC

fig.9

12-24V

SA-1

OUT

+

MOMENTARY
TRIGGER INPUT

OPERATOR
RELAY
C NO NC

NOTE: ONE SA-1 IS REQUIRED FOR ACCESS
DIRECTION AND ONE FOR EGRESS DIRECTION.

POWER
12 TO 24
VOLTS
AC or DC

OPERATOR BUTTON OR OTHER
MOMENTARY SWITCH CONTACT

TO EXIT DOOR OPERATOR (EGRESS OR ACCESS)

TO ENTRANCE DOOR OPERATOR (EGRESS OR
ACCESS)