PDQ PS440B is a reliable power supply designed to provide continuous power to various electrical devices, such as electrified mortise and cylindrical locks, electric strikes, mag locks, and motorized exit devices. It features regulated 24VDC output with a 4 Amp continuous rating and a 6 Amp boost at 20% duty cycle, making it suitable for applications requiring brief surges of power. The PS440B also includes independent, solid-state triggered inputs for access control and a fire alarm link for added safety.
PDQ PS440B is a reliable power supply designed to provide continuous power to various electrical devices, such as electrified mortise and cylindrical locks, electric strikes, mag locks, and motorized exit devices. It features regulated 24VDC output with a 4 Amp continuous rating and a 6 Amp boost at 20% duty cycle, making it suitable for applications requiring brief surges of power. The PS440B also includes independent, solid-state triggered inputs for access control and a fire alarm link for added safety.
Installation Instructions
PS440B/480B
The PS440B and PS480B are regulated, linear power supplies rated at 4 Amps continuous
but designed to provide the brief surge requited by 24VDC solenoid driven latch pull-
back devices. These power supplies may also be used to power electried mortise and
cylindrical locks, electric strikes, mag locks, motorized exit devices, etc.
SPECIFICATIONS
• Input voltage: 120 VAC, 60Hz, 2 Amp Input Fuse
• Output voltage: Regulated 24VDC +/- 10%
• Current Rating: 4 Amps continuous, 6 Amp boost @ 20% duty cycle
• UL294 Sixth edition
• Class 2 Rated power limited output
• Inputs:
DESCRIPTION
Symptom Possible Cause Solution
EL Exit device can’t fully
retract latch
Possibility 1- Wire gauge from power
supply to exit device too small
Possibility 2- Distance from Power
Supply. to exit device is too far
Possibility 3- Exit device out of
adjustment
Check with your device manufacturer’s wiring
specications.
Green channel LED won’t
light up, channel isn’t
working
Possibility 1- Dead short or overload
Possibility 2- Bad solenoid in locking
hardware or defective interface device
between hardware and power supply.
Shut off power, detect short, restore power,
channel will reset.
Power supply not working
and red LED not lit.
Possibility 1- AC fuse blown Replace fuse with 2A Slow Blow 250VAC
5mm x 20mm
TROUBLESHOOTING
Re-adjust exit device according to manufacturer’s
mechanical recommendations.
Check with your device manufacturer’s wiring
specications.
Check solenoid coil resistance and compare to
manufacturer spec. If not close, contact service
representative.
•
•
•
Doc. #20107_B_PDQ 7/20/22
Possibility 2- Short Circuit If replacement fuse has blown then there
is likely a short circuit in the board & it
will need to be replaced.
Connecting to the Fire Alarm Link (if needed)
1. Shut o the 120 VAC to the power supply.
2. Remove the jumper wire from “FIRE”
terminal. (see g 5)
3. Connect to normally closed re alarm relay.
4. Restore AC voltage to power supply
BLACK
GREEN
WHITE
WIRE JUMPER INSTALLED
WHEN NO FIRE ALARM RELAY
IS CONNECTED
REMOVEABLE
CONNECTORS
GREEN
CHANNEL 1
LED
GREEN
CHANNEL 2
LED
GREEN
POWER TAP
LED
BLACK
GREEN
WHITE
WIRE JUMPER INSTALLED
WHEN NO FIRE ALARM RELAY
IS CONNECTED
NORMALLY OPEN
DRY CONTACT FROM
ACCESS CONTROL
SYSTEM
NO VOLTAGE
DEVICE(S)
(24VDC 750mA MAX)
+
-
SEE
CH 1
REMOVEABLE
CONNECTORS
+
-
POWER TAP
(24VDC 500mA MAX)
NORMALLY OPEN
DRY CONTACT FROM
ACCESS CONTROL
SYSTEM
NO VOLTAGE
DEVICE(S)
(24VDC 750mA MAX)
+
-
SEE
CH 1
REMOVEABLE
CONNECTORS
+
-
POWER TAP
(24VDC 500mA MAX)
GREEN
CHANNEL 1
LED
GREEN
CHANNEL 2
LED
GREEN
POWER TAP
LED
BLACK
YELLOW
TRANSFORMER BLACK
YELLOW
TRANSFORMER
FIRE BATTERYOUTPUT
Fig. 5 - Connecting FA
• Enclosure: 13”W x 15.5”H x 5”D (accommodates two 7AH batteries)
• AC Fuse Type: 5mm x 20mm rated @2 Amp 250VAC
• LEDs: Red = A/C Power Indicator, Green = D/C Output Indicator,
Orange = Battery Output Indicator
• Temperature Range: 0 to 49° C
• Fire Alarm Link
• Battery charging: Regulated, independent battery charging
• Battery backup: Automatic uninterrupted battery backup.
Note: Battery capacity for emergency standby is at least 1 hour.
Batteries not included (accommodates 2 each 7AH batteries)
• Maximum humidity: 85%
• Made in USA
• UL294 (6e) Security Levels:
PS404B: 4 Independent, solid-state inputs triggered by normally open dry contact
PS408B: 8 Independent, solid-state inputs triggered by normally open dry contact
1. Total combined current for 24VDC outputs may not exceed 4A
Destructive Attack: Level I
Line Security: Level I
Endurance: Level IV
Standby Power: Level IV
PS404B: 4 Auto resetting rated @ 1.5 Amp
PS408B: 8 Auto resetting rated @ .75 Amp
• Solid-State Outputs1:
PDQ Industries, Inc. 800-441-9692 www.pdqlocks.com
STEP 1 - Mount the power supply
STEP 2 - 120VAC wiring connection
STEP 3 - Wiring the Electried Hardware
1. Make sure 120VAC service is o at power supply
(Breaker should be shut o).
2. Make sure 120VAC supply wire is rated at 90° C or
higher.
3. Connect 120VAC supply wire to the terminal block.
Connect ground to pigtail attached to enclosure.
4. Restore AC power to power supply. Red LED should
now be on.
5. Proceed to step 3.
1. Shut o breaker supplying AC power to the
power supply.
1. Find a cool and dry location to mount
the power supply.
Wiring Batteries (Batteries not included)
1. Turn on 120VAC to power supply
2. WARNING: Make sure battery polarity is correct before you proceed.
3. Hook up batteries with battery leads as shown in g 4. The enclosure will
accommodate (2) 7AH 12V batteries.
Pre-drilled mounting holes
Pre-drilled mounting holes
BLACK
GREEN
WHITE
BLACK
YELLOW
TRANSFORMER
WIRE JUMPER INSTALLED
WHEN NO FIRE ALARM RELAY
IS CONNECTED
REMOVEABLE
CONNECTORS
SEE
CH 8
SEE
CH 8
SEE
CH 8
GREEN
CHANNEL 1
LED
GREEN
CHANNEL 4
LED
GREEN
CHANNEL 2
LED
GREEN
CHANNEL 3
LED
TRANSFORMER
GREEN
CHANNEL 5
LED
GREEN
CHANNEL 8
LED
GREEN
CHANNEL 6
LED
GREEN
CHANNEL 7
LED
+
-
NORMALLY OPEN
DRY CONTACT FROM
ACCESS CONTROL
SYSTEM
NO VOLTAGE
DEVICE(S)
(24VDC 500mA MAX)
SEE
CH 8
SEE
CH 8
SEE
CH 8
SEE
CH 8
BLACK
GREEN
WHITE
BLACK
YELLOW
TRANSFORMER
WIRE JUMPER INSTALLED
WHEN NO FIRE ALARM RELAY
IS CONNECTED
REMOVEABLE
CONNECTORS
SEE
CH 4
SEE
CH 4
SEE
CH 4
GREEN
CHANNEL 1
LED
GREEN
CHANNEL 4
LED
GREEN
CHANNEL 2
LED
GREEN
CHANNEL 3
LED
TRANSFORMER
+
-
NORMALLY OPEN
DRY CONTACT FROM
ACCESS CONTROL
SYSTEM
NO VOLTAGE
DEVICE(S)
(24VDC 1A MAX)
+
12V battery 12V battery
+
--
BAT
2. Using the four mounting holes in the
power supply box, secure the box to a
wall or other solid surface.
(Note: The box is designed & approved
for indoor use only.)
3. Proceed to step 2.
1. For UL Installations, the power supply must be installed in the protected area within an
Access Controlled room
2. Must be Installed within accordance with the National Electrical Code, ANSI/NFPA 70.
3. Must be Installed within accordance with Local authority having jurisdiction.
4. The AC input wiring shall
a. be in conduit,
b. be minimum No. 18 AWG wire,
c. maintain ¼ inch spacing between non power-limited wiring, and
d. be fail safe to meet the requirements of NFPA 101, Paragraph 7.2.1.6.
Mounting Notes
WARNING: HIGH VOLTAGE!
SEVERE RISK OF ELECTRIC SHOCK IN
FIGURE 2
1. Using wiring diagram in g 3.2, wire your exit
devices.
2. Restore power to power supply and trigger exit
devices to make sure they are working correctly.
1. Using wiring diagram in g 3.1, wire your exit
devices.
2. Restore power to power supply and trigger exit
devices to make sure they are working correctly.
Section A.
For ring devices independently
continue to section A. Firing devices
simultaneously proceed to section B.
Section B.
BLACK
GREEN
WHITE
BLACK
YELLOW
TRANSFORMER
WIRE JUMPER INSTALLED
WHEN NO FIRE ALARM RELAY
IS CONNECTED
REMOVEABLE
CONNECTORS
SEE
CH 8
SEE
CH 8
SEE
CH 8
GREEN
CHANNEL 1
LED
GREEN
CHANNEL 4
LED
GREEN
CHANNEL 2
LED
GREEN
CHANNEL 3
LED
TRANSFORMER
GREEN
CHANNEL 5
LED
GREEN
CHANNEL 8
LED
GREEN
CHANNEL 6
LED
GREEN
CHANNEL 7
LED
+
-
NORMALLY OPEN
DRY CONTACT FROM
ACCESS CONTROL
SYSTEM
NO VOLTAGE
DEVICE(S)
(24VDC 500mA MAX)
SEE
CH 8
SEE
CH 8
SEE
CH 8
SEE
CH 8
BLACK
GREEN
WHITE
BLACK
YELLOW
TRANSFORMER
WIRE JUMPER INSTALLED
WHEN NO FIRE ALARM RELAY
IS CONNECTED
REMOVEABLE
CONNECTORS
SEE
CH 4
SEE
CH 4
SEE
CH 4
GREEN
CHANNEL 1
LED
GREEN
CHANNEL 4
LED
GREEN
CHANNEL 2
LED
GREEN
CHANNEL 3
LED
TRANSFORMER
+
-
NORMALLY OPEN
DRY CONTACT FROM
ACCESS CONTROL
SYSTEM
NO VOLTAGE
DEVICE(S)
(24VDC 1A MAX)
BLACK
GREEN
WHITE
BLACK
YELLOW
TRANSFORMER
WIRE JUMPER INSTALLED
WHEN NO FIRE ALARM RELAY
IS CONNECTED
REMOVEABLE
CONNECTORS
SEE
CH 8
SEE
CH 8
SEE
CH 8
GREEN
CHANNEL 1
LED
GREEN
CHANNEL 4
LED
GREEN
CHANNEL 2
LED
GREEN
CHANNEL 3
LED
TRANSFORMER
GREEN
CHANNEL 5
LED
GREEN
CHANNEL 8
LED
GREEN
CHANNEL 6
LED
GREEN
CHANNEL 7
LED
+
-
NORMALLY OPEN
DRY CONTACT FROM
ACCESS CONTROL
SYSTEM
NO VOLTAGE
DEVICE(S)
(24VDC 500mA MAX)
SEE
CH 8
SEE
CH 8
SEE
CH 8
SEE
CH 8
BLACK
GREEN
WHITE
BLACK
YELLOW
TRANSFORMER
WIRE JUMPER INSTALLED
WHEN NO FIRE ALARM RELAY
IS CONNECTED
REMOVEABLE
CONNECTORS
SEE
CH 4
SEE
CH 4
SEE
CH 4
GREEN
CHANNEL 1
LED
GREEN
CHANNEL 4
LED
GREEN
CHANNEL 2
LED
GREEN
CHANNEL 3
LED
TRANSFORMER
+
-
NORMALLY OPEN
DRY CONTACT FROM
ACCESS CONTROL
SYSTEM
NO VOLTAGE
DEVICE(S)
(24VDC 1A MAX)
IN
2 OUT
GND
IN C
IN
C
Locking Device
INPUT #1
EXAMPLE
IN
2
OUT
GND
IN
C
IN
C
Locking Device #1
INPUT #1
EXAMPLE
IN
3
OUT
C
IN
Locking Device #2
Locking Device #3
Fig. 4 - Wiring Batteries
Fig. 1 - Mounting
Fig. 2 - 120VAC Connection
g. 3.1 - Wiring
Fig. 3.2 - Wiring off 1 relay
* Total combined current for 24VDC outputs ma y not ex ceed 4A
NOTES:
1. When installing batteries for the first time or replacing old batteries make sure the
batteries installed are fully charged.
2. We recommend you label the battery with the date the batteries were installed. Most
battery manufactures recommend then batteries be replaced after 4-5 years of service. You
may want to check with your battery manufacturer when establishing a “replace by” date.
-
1
-
2
PDQ PS440B is a reliable power supply designed to provide continuous power to various electrical devices, such as electrified mortise and cylindrical locks, electric strikes, mag locks, and motorized exit devices. It features regulated 24VDC output with a 4 Amp continuous rating and a 6 Amp boost at 20% duty cycle, making it suitable for applications requiring brief surges of power. The PS440B also includes independent, solid-state triggered inputs for access control and a fire alarm link for added safety.
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