Securitron RLP-12, RLP-24 Installation Instructions

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SECURITRON RELAY LOGIC PACK MODEL RLP-12 AND RLP-24

INSTALLATION AND OPERATING INSTRUCTIONS

1. DESCRIPTION

The relay logic pack accomplishes multiple functions needed in the access control and se curity
industry: It permits integration of lock status reporting electric l ocks with card reader system s.
It supplies logic for lock status reporting electric locks used in man trap type interlocks. It
functions as a relay interlock latch and finally, it can be used as a DPDT relay.

2. ELECTRICAL CHARACTERISTICS

Two different versions are available for operation on respectively 12 or 24 VDC. Supply voltage
need not be regulated; a transformer plus full wave bridge rectifier is adequate. The pack will
draw a maximum of 30 mA at 12 VDC or 15 mA at 24 VDC. Contacts are rated at 2 Amps.

3. INTEGRATION OF LOCK STATUS SENSING WITH ACCESS CONTROL

When electric locks such as Securitron's Magnalock are integrated with many b rands of access
control equipment, certain problems can arise which are overcome by the use of the relay logic
pack. First, most access control systems monitor the door and will annunciate an alarm
condition if the door is not reporting secure when it should be. When "legal" entry is granted by
the card reader (or digital keypad), this alarm condition is automatically suppressed. In similar
fashion, when legal exit is granted (REX) the alarm condition is also suppressed.

If the door is monitored by a door switch, this function will work properly. How ever, if a lock
status sensor is employed to yield higher security, a timing problem can develop. As soon as
the lock is released, a lock status sensor (such as Securitron's Senstat feature) will change
state. A door switch is much slower. It will only change state when the door is actually opened.
Because of the high speed of the lock status sensor, the access control system may report an
alarm because it will read the lock status sensor changing state before it internally recognizes
that monitoring should be suppressed during legal entry or egress.

Another problem can arise with legal egress. The access control system has to b e informed that
legal egress (REX) is being performed. Therefore a switch equipped exit device such as a push
button, a detector, Securitron's Touch Sense Bar, or a switch equipped panic bar must be
employed. Such devices may be wired into the REX input of the access control syst em. This will
release the lock for a selectable period of time permitting egress, but there is a reliability
problem. Egress is a safety function and if a failure occurs with the access control system,
people can become trapped. It is therefore better to wire the exit device directly to the lock a nd
also to the REX input of the access control system. If the REX input fails, the lock can st ill be
released. The problem is that this requires two poles for the exit device switch and the typical
exit device does not have this feature.

The relay logic pack overcomes these problems by providing dry outputs, normally open or
normally closed, to the access control system for REX and lock/door monitoring alarm. The REX
signal occurs whenever the exit switch is used. The alarm signal occurs when the lock is not
reporting secure although the relay logic pack doesn't output this signal while the exit switch is
depressed. The fact that use of the exit switch suppresses the alarm output is particularly
valuable if the lock is to be released via an alternate action switch for a period of time. Also, the
alarm signal is delayed by 150 milliseconds so that internal suppression of this signal in the
access control system, triggered by either legal entry or exit, will have time to become effective.

3.1 WIRING

Refer to the drawings below for respectively fail safe (secure when powered) or fail secure
(secure when released) locks. Note the diode that must be used with fail secure locks. If it is
not there, the access control relay will trip the REX input. The drawings show local wiring at
each door and outputs from the relay logic pack to the access control system. Reporting request
to exit (REX) is from the brown, green and yellow wires which are SPDT dry contacts. Two more
wires report the alarm condition. Use white and violet if you want to alarm on a closed

condition. Use blue and gray if you want to alarm on an open condition.

© Copyright, 2011, all rights reserved PN# 500-13650
Page 1 Rev. C, 05/11

Note that the "Lock Status" line which connects to red on the relay logic pack has a special
meaning. This line must supply +V to red of the relay logic pack whenever the lock is
reporting secure. It is the equivalent of the white wire on an "S" Senstat Magnalock. If your
lock status sensor is a dry closure when secure, +V from the power supply (this connection is
not shown on the drawings) must be input to lock statu s common with lock status NC going to
red of the relay logic pack.

FIG. 1: ACCESS CONTROL WIRING: FAIL SAFE AND FAIL SECURE LOCKS

BROWN (REX COM)
GREEN (REX NC)
YELLOW (REX NO)

WHITE (ALARM NO)
VIOLET (ALARM NO)
BLUE (ALARM NC)
GRAY (ALARM NC)

POWER
SUPPLY

ACCESS
CONTROL

RELAY

COM

"LOCK STATUS" WIRE MUST OUTPU T +V WHEN LOCK IS SECURE

NC

EXIT SWITCH

NO

COM NC

FAIL SAFE

LOCK

LOCK

STATUS

ORANGE

RED

BLACK

RELAY
LOGIC
PACK

BROWN (REX COM)
GREEN (REX NC)
YELLOW (REX NO)

WHITE (ALARM NO)
VIOLET (ALARM NO)
BLUE (ALARM NC)
GRAY (ALARM NC)

POWER
SUPPLY

ACCESS
CONTROL

RELAY

COM

NO

EXIT SWITCH

COM

NO

DIODE

FAIL SECURE

LOCK

ORANGE

LOCK

STATUS

RED

BLACK

RELAY
LOGIC
PACK

4. MAN TRAP INTERLOCKING

In this application, 2 electric locks with lock status se nsors which are closed when secure, are
interlocked such that only one can be released at a time. The relay logic pack supplies outputs
which keep the second lock engaged when the first is not reporting secure and visa versa. The
circuit shown in the drawing below is valid for fail safe locks only when the normal
condition of the trap is locks secure. The effect of the relay logic pack is to bypass the
respective control switch when the alternate lock is not reporting secure. For definition of the
"Lock Status" wires which connect to relay logic pack red and orange, read the second

paragraph in section 3.1 above

Note that traps where the locks are normally released and traps using fail secure locks can
directly interlock via door switches or closed lock status switches and therefore do not require
the relay logic pack.

FIG 2: NORMALLY SECURE MAN TRAP INTERLOCK WITH FAIL SAFE LOCKS

BLUE

WHITE
BROWN

POWER
SUPPLY

SWITCH 1

COM NC

SWITCH 2

COM NC

FAIL SAFE

LOCK

1

FAIL SAFE

LOCK

2

LOCK
STATUS

LOCK

STATUS

ORANGE

RELAY
LOGIC
PACK

RED

GREEN

BLACK

"LOCK STATUS" WIRE MUST OUTPUT +V WHEN LOCK IS SECURE

5. RELAY INTERLOCK LATCH

Often it is desired that a signal condition which occurs for a period of time sets a latch that
creates a different signal which is active until reset manually regardless of whether the first
signal has continued or not. This function may be accomplished with the relay logic pack.

PN# 500-13650
Page 2 Rev. C, 05/11