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Spec 1604
Model SEQR-4 Rev. 02-02-21 | pg. 1/3
The low voltage rackmount sequencer is used in conjunction with
remote power controls (RPCs) to provide time-delayed activation
and deactivation of connected equipment, often located in another
rack, room or building. The sequencer can also control accessory
systems such as projector screens, lighting or blinds. To initiate
sequencing, use the rocker switch on the front panel or connect
an external switch to the rear terminal block for remote activation.
Note: This sequencer is for use with compatible components that feature classic
connections. It is not for use with devices that feature pass-through connections.
FEATURES:
•
Power Requirement:
100-240VAC 500mA max.
•
Rackmount Chassis:
19" x 9" x 1.75" steel chassis with black
powder epoxy finish.
•
Activation Trigger:
– Rocker Switch: Sequencing is typically initiated by the front
rocker switch. Activation in mid-cycle reverses direction.
– Remote Switch (optional): External switch(es) with
MOMENTARY closure can be connected to the rear barrier
strip terminal block to initiate sequencing. Up to eight
momentary switches can be connected in parallel.
•
Four Step Sequencer:
– The rear has four barrier strip control outputs that activate in
sequential order (1, 2, 3, 4) and deactivate in reverse order.
– The delay between steps can be adjusted (0.5-10 seconds)
via a trimpot on the front panel.
– LEDs provide visual status of the activation sequence. A green
LED flashes when the system is cycling up and remains
steady when the system is on. The red LED flashes when the
system is cycling down and remains steady when the system
is off.
– Includes auxiliary 24VDC output (300mA max.) for use with
remote indicators, if needed.
•
Rear Connections:
Plug-in barrier strip terminal block. See
installation drawings on page two.
–
Input from Alarm System Interface: System switches can be
overridden by contact closures provided on a fire alarm panel
or a similarly installed device. Make one contact only (Lock
Off, Lock On, or Switch Lock).
–
Output to RPC and/or Accessory System (steps 1-4):
+ To sequentially activate equipment, connect the Common
and Switched Relay contacts on an output to a remote
power control, then plug the equipment in to the RPC.
Each output can control up to ten RPCs.
+ To sequentially activate an accessory system or indicator,
connect dry contacts (N.O., N.C., Com.) on an output to the
accessory device.
– Input from Remote Switch(es): Connect Lowell remote
switch(es) that have MOMENTARY closure and one LED. Up
to eight switches can be connected in parallel.
•
Power Supply:
UL Listed power supply (100-240VAC input,
24VDC 500mA output) with 6 ft. cord and NEMA 1-15P plug.
Includes three adaptors for international use (Schuko CEE 7/16,
BS1362, AS3112).
•
Country of Origin:
Made in U.S.A. with global components
•
A&E Specifications:
The sequencer shall be Lowell model
SEQR-4, which shall feature a front rocker activation switch,
trimpot for four-step delay adjustment of sequence operation
(1/2 to 10 sec.), and LED status indicators. The rear shall feature
barrier strip terminals to connect Lowell remote power controls,
dry auxiliary contacts to connect accessory devices, contacts to
connect an external remote momentary style switch, and an alarm
system interface. The 19" x 9" x 1.75" rackmount chassis shall
be steel with black powder epoxy finish. The sequencer shall be
made in the U.S.A. with global components. It shall include a
power supply with 100-240VAC input, 24VDC 500 mA output,
and six ft. power cord with four plug adaptors.
Rackmount Sequencer (4 step): SEQR-4
Red LED:
FLASHING = down cycle in progress; STEADY ON = down cycle completed (system off)
Green LED:
FLASHING = up cycle in progress; STEADY ON = up cycle completed (system on)
Rocker Switch:
starts sequence
up or down. Activation in mid-cycle
reverses direction.
Delay Adjust
:
recessed trim pot
Four LEDs:
light to indicate progress of sequence (up or down).
Made in USA
