Alarm Lock PG21 Installation Instruction
PG21 Series
ALARM LOCK
Pilfergard Door Alarms
345 Bayview Avenue
Amityville, New York 11701
For Sales and Repairs, (800) 645-9445
For Technical Service, (800) 645-9440
© ALARM LOCK 2006
Publicly traded on NASDAQ Symbol: NSSC
DESCRIPTION
The PG21 is a microprocessor-controlled door alarm for surface mounting on a door or door frame. Typical applications
include emergency fire escape doors, nursing home stairwell
doors, rear restaurant and theater doors. The PG21 is designed to continually monitor the status of a door. When
opened, the protected door triggers an alarm sounder, an optional strobe or can activate another device via a Form-C relay. It has various programmable features including:
• Four Siren Sounds
• Four "Alarm Modes" for a variety of applications (see page 5).
• Programmable Time Delays
• Battery Operated (Battery life approximately 2 ½ years)
• External Power Supply Capability
• Built-in Door Bell (Requires button installation)
• Cover Tamper Protection (Unauthorized removal trips alarm)
• "Key Lock Tamper" (Cover cannot be removed without key)
• Accepts standard mortise cylinders
• Multiple Door Monitoring (External Reed Switch Contacts)
• Form-C Relay (Connect to fire/burglary panel or other device)
• Annunciator Feature (Beeps when door opens)
• Two Operating Modes: "Always Armed" and "On/Off"
• Strobe Feature (PG21MSS models only)
• Status Indicator
The PG21 unit is usually mounted on the interior of the door
frame or door and is paired with a magnet (Magnetic Actuator)
mounted on the opposing side of the door gap. Opening the
door, when armed, will activate the alarm. The PG21 is
shipped from the factory in "Always Armed" mode (if key is removed, unit automatically re-arms) and can be converted to a
manual "On/Off" mode (allowing the operator to manually arm
or disarm with the key). The Status indicator (located on the
front of the Housing Cover) signifies whether the unit is armed
or disarmed (red indicates armed status). A selectable annun-
ciator feature beeps to signal the opening of the door while the
unit is disarmed.
SPECIFICATIONS
Dimensions: 11" x 2½" x 2 3/8" (22.8cm x 6.3cm x 6.8cm)
(LxWxD) (Length 11" with Strobe, 9" without Strobe).
Finish: Metallic Silver (PG21MS); Metallic Bronze
(PG21MB); Red (PG21RD); Metallic Silver with
Strobe (PG21MSS)
Power Requirements: 9-Volt Alkaline Battery (supplied).
The PG21 may also be used with Model PP100
(optional) or other power supply providing 9-12Vdc at
300mA. Internal battery may be used simultaneously
INSTALLATION INSTRUCTIONS
WI738F 1/06
with external power supply.
Sounding Device: Piezo electronic sounder sweep siren,
steady or pulsing, 110dB at 10 feet
Shipping Weight: 1 lb, 10 oz.
Relay Contacts: (Form-C) rated at 24VAC/DC at 1A (non-
inductive).
A. INSTALLATION: PRELIMINARY STEPS
Installation is divided into 5 main steps: (A) Preliminary, (B)
Wiring, (C) Configuration, (D) Mounting and (E) Testing.
1. Choose a suitable location. Most often, the PG21 is
mounted on a door, and the Magnetic Actuator is mounted
to (or inside) the door jamb. However, if the PG21 will
have a doorbell or any external wiring, give careful consideration to the mounting location and make allowances for
all necessary wiring. For example, if you wish to monitor
multiple doors, choose a generally central location as
wires (and reed switch contacts) will need to run to all
doors in series. If you mount the PG21 on a door, the
Baseplate must be mounted far enough away from the
edge of the door to prevent unit from striking the door jam
when opening the door.
2. Examine the enclosed template. The two-sided tem-
plate provides mounting hole locations (drawn in solid circular lines) for several door types. Use the four corner
holes for the Baseplate as shown on the template. Note:
Certain narrow-stile doors require only two holes for the
Baseplate.
3. Mark and drill holes (use 1/8" bit, 1" deep) on the door
and jamb as per the template directions. Hole locations
are drawn in solid circular lines.
4. External Wiring. Mark and drill the hole (shown on the
template) for external wiring such as doorbell, reed switch
or relay wiring.
5. Knock out the necessary holes from the Baseplate and
install on the door with the supplied #8 sheet-metal
screws.
6. Temporarily mount the Housing Cover into the Base-
plate to aid in positioning the Magnetic Actuator location.
Mount as follows: Remove all keys from cylinder (thus
ensuring the cylinder is in a 12:00 position). Hold the
Housing Cover vertically with the inside facing toward you
(the PC board and jumpers can been seen at bottom),
slide the switch to the right. (Note: Each time the Hous-
ing Cover is removed, the switch MUST be moved to the
right before mounting). Hook the Housing Cover into the
clip at the bottom of the Baseplate, then gently snap the
top of the Housing cover into the top of the Baseplate. DO
NOT FORCE. Note: If the switch is in the wrong position
(not moved to the right), or if a key is accidentally left inside the cylinder, the Housing Cover is specifically designed NOT to lock into the Baseplate.
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7. Position the Magnetic Actuator as indicated by the red
sticker on the side of the Housing Cover. If stickers were
removed, use the Magnet Alignment Mode (see page 3) or
place the Magnetic Actuator 1½ " from the bottom edge of
the Baseplate. Mark holes and (as with the Baseplate)
use a 1/8" (0.125") bit, and drill the hole 1" deep.
8. Install the Magnetic Actuator with the supplied #8 sheetmetal screws (1"). Be sure to insert the Magnet (P1358)
and Magnet Cover (P0291) into the Magnet Housing
(P0290) before mounting.
B. WIRING
External wiring to the PG21 requires that the unit be mounted
on the frame with the magnet on the adjacent door. (The
PG21 may be mounted on a door with the addition of a Model
271 Flexible Cable). All wiring is made at its terminal strip.
Wiring connections are summarized in the Wiring Diagram
shown below in Figure 1.
NC NO
C
1 2 3 4 5 6 7 8
RELAY
*ALSO SEE FIG 2
Fig 1. Wiring Diagram.
Relay (Terminals 1-3). Terminal 1 = Normally Closed;
Terminal 2 = Common; Terminal 3 = Normally Open.
On alarm, the relay will activate and remain latched for
as long as the sounder is on.
Reed Switch (Terminals 4 & 5). Connect external reed-
switch contacts to Terminals 4 and 5 and remove reed
selection jumper W1 located in the center of the PCB.
Note: If reed switches are wired in series as shown below in Figure 2, several doors may be monitored
simultaneously. Using #22AWG wire, maximum wiring
distance should not exceed 50 feet. Note: When external reed switches are used, the internal reed switches
must be disabled by removing the reed selection (W1)
jumper.
Power (Terminals 6 & 7). Connect an external power
supply: positive (+) red to Terminal 7; negative (-) black
to Terminal 6. Leave in the internal battery as a backup
battery. If using the Alarm Lock PP100 Power Supply,
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DOOR 1
MAXIMUM WIRING DISTANCE = 50 FEET
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USING #22AWG WIRE
NOTE: REMOVE "W1" JUMPER INSIDE HOUSING
(ONLY IF EXTERNAL REED SWITCHES ARE USED).
Fig. 2. Multiple door monitoring (wired in series).
connect the two battery clips to the unit and the internal
battery as labeled.
DOORBELL
_
+
EXT.
REED
POWER
SWITCH*
12VDC
DOOR 2 DOOR n
Doorbell (Terminal 8). Connect between terminal 8 and 6
using momentary-on switch to activate Doorbell. Produces alternating tone. Will not operate during Alarm or
during Arm delays. Note: Do not use a lighted door
bell button--the light will drain the battery.
Strobe Connector (Jumper 14). If using a Strobe unit, run
the wires through Strobe Assembly and Palnut and plug
female polarized connector into J14 located in the center of the PC board (see Fig 5b, page 4). Note: J14
(Pin1) is the external Strobe Power (9 volts) and J14
(Pin2) is the Strobe Ground.
The Strobe and siren are on the same circuit, therefore
the timeout duration is the same for both.
C. CONFIGURATION
There are two configuration sections: Mechanical Con-
figuration and Jumper ("Software") Configuration.
Mechanical Configuration
You must decide if the PG21 lock will be kept in its original
factory configuration (in "Always Armed" mode) or converted to a manual "On/Off" mode.
The PG21 is shipped from the factory with a Torsion Spring
(HW1149) installed (see Figure 7, page 7) which forces the
Cam Assembly (HW1187) against the PC Board switch, thus
keeping the lock Armed whenever the key is removed. If
you wish to convert the lock to On/Off mode, allowing the
Cam Assembly to be moved in either position, the Torsion
Spring must be disabled--disconnected from the Cam Assembly. To disable the Torsion Spring, use a small screwdriver and unhook the end of the Torsion Spring from the
Cam Assembly, as illustrated in the following images: Note:
To allow for future re-conversion, the Torsion Spring can be
simply disconnected and not removed (see Fig. 3c below).
See the following three images (Figs. 3a-3c) to help you con-
vert your PG21 from "Always Armed" to "On/Off" mode, or to
restore your PG21 back to its original factory condition
("Always Armed").
Torsion
Spring
Cam
Assembly
Fig 3a Fig. 3b Fig. 3c
Figs. 3a-3c: Disconnect Torsion Spring from Cam Assembly:
Fig 3a displays the Torsion Spring as it is installed from the factory (thus
"Always Armed" mode). To convert to "On/Off" mode, first lift leg of the
Torsion Spring (Fig. 3b) from Backplate, then unhook other end of spring
from Cam, releasing tension (Fig. 3c), and allowing Cam to move freely.
Jumper Configuration
Before configuring the jumpers, also see page 5 and decide
which options should be selected for your application.
1. Connect the battery; a chirp will sound ensuring that
power is properly connected. Important: Press the small
CLEAR button at the lower-left corner of the circuit board
(see Figure 4 below).
Lift leg of
spring...
...then
unhook
this end
2
Clear
1 2
4
5 6 7
3
9
8
Fig 4. CLEAR Button and Jumpers.
(Jumpers shown in default ("up") positions).
2. Reed selection jumper W1 is located in the center of the
PCB. The jumper should be set to the side of the unit that
will have the magnet installed. (See Figure 5 below).
PCB
Jumper set
to right...
...enables right
reed switch
Fig 5. Reed selection jumper W1 found in the center of the PCB.
Jumper shown is configured to enable the right reed switch.
3. Select jumper options (J1- J9) as follows. (Refer to the
Jumper Options table, below and page 5).
Jumper Number and De-
scription
J1-Siren: Sweeping Steady
J2-Siren Pulsing: Disable Enable
J3-Siren 2-Minute Timeout: Enable Disable
J4-Security Level: High/Latching Low/Non-Latching
J5-Arming Delay: No Arming Delay 15 Seconds
J6-Alarm Delay 15 Sec.: Disabled Enabled*
J7-Alarm LongDelay 60 Sec.: Disabled Enabled*
J8-Annunciator (Beep): Disabled Enabled
J9-Annunciator Volume: Low Volume High Volume
*NOTE: If Jumpers 6 and 7 are both enabled, Alarm Delay = 2 minutes
Jumper Options
Jumper Default Position
(Upper Position--see Figure 4)
Jumper Enabled Position
("Down" near edge of ci rcuit board)
Important: The jumpers are only read at startup and whenever the unit is armed. If the jumpers are changed after power
up, the unit must be rearmed before the jumper changes take
effect. In addition, the unit will not function unless Tamper
Screw (SC543) is in place.
J1: Siren. Factory default sound is a Sweeping Siren.
Jumper moved to the "lower" position (near the edge of
the circuit board) produces a Steady-Tone Siren.
J2: Pulsing Siren. Default setting is Constant-ON.
Jumper moved to the "lower" position produces a siren
that "pulses" on and off.
J3: Siren 2-Minute Timeout. Default setting (jumper at
"upper" position) enables the timeout, allowing the siren to turn off two minutes after the alarm is tripped--if
door is closed within that two minute period. Jumper
moved to the "lower" position disables the timeout,
keeping the siren on until manually reset. To indicate
that an alarm has occurred (Alarm Memory), the LED
will start flashing. Alarm Memory is cleared after
approximately 4 hours or by rotating the lock cylinder
counter-clockwise and removing the key. Note: If the
door is still open after two minutes, the alarm will
restart.
J4: Security Level. Default setting (jumper at "upper" po-
sition--High Security) enables a latching alarm when
tripped--siren remains on for 2 minutes or until turned
off by the key (turn key to the left). Jumper moved to
the "lower" position will set the lower security nonlatching "Door Ajar" alarm mode--siren turns on when
door is open, and turns off (and resets) when door is
closed.
Jumpers 5-7: These jumpers are used for doors that are intended for authorized entry and exit, providing an "Arming/Exit"
delay time when exiting, and an "Alarm/Entry" delay time when
entering. Disarming with the key within the programmed time
will prevent an alarm. See descriptions for J5 and J6 below for
specific examples. Note: If jumpers J6 and J7 are both moved
to the "lower" position, the result is a delay of 2 minutes.
J5: Arming/Exit Delay. Default (jumper at "upper" posi-
tion) provides no Arming/Exit Delay. Jumper moved to
the "lower" position enables a fixed 15-second
"Arming/Exit Delay", allowing exit without alarm (i.e.
the time between turning the key to the left and when
the system actually arms). For example, if J5 is at the
"lower" position, the protected door can be used as an
"exit door"---first, insert and turn metal key to the left,
then open door, exit, and let the door close. When the
delay expires, the PG21 re-arms.
J6: Alarm/Entry Delay. Default (jumper at "upper" posi-
tion) provides no delay. Jumper moved to the "lower"
position (near the edge of the circuit board) provides
15 seconds of Arming Delay time. If jumpers J6 and
J7 are both enabled, the result is an Alarm Delay of 2
minutes. For example, if J6 is at the "lower" position,
the protected door can be used as an "entry door"--first, open the door from the outside, insert and turn
metal key to the left, and let the door close. When the
delay expires, the PG21 re-arms.
J7: Alarm/Entry Long Delay. Default (jumper at "upper"
position) provides no delay. Jumper moved to the
"lower" position selects 60 seconds of Arming Delay
time. If jumpers J6 and J7 are both moved to the
"lower" position, the result is an Alarm Delay of 2 minutes.
J8: Annunciator. The annunciator provides a 1 second
"beep" sound. The jumper in the factory default position (jumper at "upper" position) disables the "beep".
Jumper moved to the "lower" position selects the
"beep" sound when the door is closed and unit is disarmed. Note: This jumper selection will operate only
if the PG21 is mechanically configured to "On/Off"
mode (see page 2, Section "C", "CONFIGURATION").
J9: Annunciator Volume. The jumper in the factory de-
fault position (jumper at "upper" position) produces a
low volume beep. Jumper moved to the "lower" position (near the edge of the circuit board) produces a
high volume beep.
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