Specifications

22
22• VonDuprinDoorcontrolandsecurityhardware
EL/QEL Electric latch retraction
EL Signal switch
EL Electric latch retraction
The EL feature allows for the remote unlatching of exit devices. A
control station operator can flip a switch to retract the latch bolt
and immediately change an exit door to push-pull operation. A
powerful, continuous duty solenoid retracts the latch bolt, either
for momentary unlatching, or for extended periods of time. The
EL feature is an alternative to manual dogging.
If manual hex-key dogging is required, specify HD-EL. If cylinder
dogging is required, the standard cylinder dogging is not
available, but special center case dogging is available, specify
SD-EL. SD-EL is not available on the 9875 or 9975 devices.
EL devices are also useful with automatic door operators, and
may be applied to fire-rated applications when under the control
of an automatic fire alarm system.
UL approved for Class II circuit applications.
The EL option does not include the power transfer from door to
frame, the power supply, or the control operator. Refer to EPT-2
power transfer and the PS914 power supply.
The PS914 with the 9002RS option card is the minimum option
card required. Other option cards available for other functions,
see PS914 power supply for additional information.
Solenoid specifications: Solenoid resistance:
Continuous duty – 24 VDC -grn-yel 1.2 – 2.2 OHMS
Current inrush – 16 Amps -grn-org 100 – 150 OHMS
Current holding – 0.3 Amps
To order, specify:
Standard – use prefix EL, example EL99L.
Hex Key dogging – Use prefix HD-EL, example HD-EL99L
special center case dogging – Use prefix SD-EL, example
SD-EL99L
EL #2
EL #1
PS872 Wiring
SC I1 O1 I2 O2 GND
EPT-2
EPT-2
Input #2
(Required for
independent
operation only).
Input #1
a*
a*
b*
b*
120/240
VAC
Popular EL application
Power supply PS914-2RS
Electric power transfer EPT-2 or EPT-10
Von Duprin
exit device
EL Wire
length (feet)
1
Wire gauge
(AWG)
EL 98/99 Rim
EL 33A/35A Rim
0-500 12
0-300 14
0-200 16
a
*
All other 98/99EL
and EL33A/35A
device types
0-250 12
0-150 14
0-100 16
b
*
Control Switch
0-1200 18
1. Wire lengths include an EPT, Door loop, electric hinge or pivot and are
measured one way between the PS914/option board and the device.
2. Table is applicable to devices that have shipped aer August 2012.
QEL Quiet electric latch retraction
The QEL feature allows for the remote unlatching of exit devices.
A control station operator can flip a switch to retract the latch
bolt and immediately change an exit door to push-pull operation.
Different than the popular EL, the QEL quiet operation is
achieved using an electric drive motor which retracts the latch
bolt either momentary unlatching or for extended periods of
time. This feature is an alternative to manual dogging.
If cylinder dogging is required, the standard cylinder dogging is
not available, but special center case dogging is available,
specify
SD-QEL. SD-QEL is not available on the 9875 or 9975 devices.
QEL devices are also useful with automatic door operators, and
may be applied to fire-rated applications when under the control
of an automatic fire alarm system.
UL approved for Class II circuit applications.
The QEL option does not include the power transfer from door to
frame, the power supply, or the control operator. Refer to EPT-2
power transfer and the PS902 or 914 power supply.
The PS902/914 with the 2RS, 4RL or 4R board is the minimum
required. Other option boards available for other functions, see
PS902/914 power supply for additional information.
The QEL has a low in rush current, so it can be used with
standard Schlage power supplies. Calculate the peak current
draw of all devices in the system to determine the required
amperage of the supply.
The 900-2RS option board designed to control two electric latch
retraction devices and provide time delay between the firing of
outputs is required. The power transfer is also sold separately.
To order, specify:
Standard — use prefix QEL, example QEL99L.
Special center case dogging — use prefix SD-QEL,
example SD-QEL99L
QEL #2
QEL #1
PS872 Wiring
SC I1 O1 I2 O2 GND
EPT-2
EPT-2
Input #2
(Required for
independent
operation only).
Input #1
a*
a*
b*
b*
120/240
VAC
Popular application
Power supply PS902-2RS
Electric power transfer EPT-2 or EPT-10
QEL Electrical load
Voltage 24VDC
Current 1.0 A Inrush (0.5 sec.) / 0.14 A Holding
a
*
Distance (one-way)
Wire gauge
200´ 18 AWG
320´ 16 AWG
500´ 14 AWG
800´ 12 AWG
b
*
Wire selection
Switch wire size
1200 . Max. 18 gauge standard
Schlage PS902 Schlage PS904 Schlage PS906
up to 2 amps up to 4 amps up to 6 amps