Lowell SEQR-8K Specifications

Heard Everywhere Since 1947

Model No's.

SEQR-8, SEQR-8K

8-step Rackmount Sequencers

Eight step rackmount sequencer in 1U chassis provides time delayed ac­tivation and deactivation of equipment with full or alternate sequence
mode (ASM). Typically used in conjunction with Lowell’s Remote Power
Controls (RPC Series) and switches (RPS Series).

Spec No. 1605 | Rev. 06.09.16 | pg. 1/3

Features

• Sequential power control allows connected equipment to be
turned on/off in time delayed order up to 8 steps.

• Rear programmable dip switch for Alternate Sequence Mode opera­tion

• Alternate Sequence Mode allows selected outputs to be by­passed for partial system operation (eg. rehearsals). Set ‘Se­quence Step Bypass’ termination block on or off for each of the
eight steps. Install separate ASM style remote switch to activate
alternate sequence operation (order separately). Note: The dry

contact may also be activated using devices by others. Switches
to control full sequence and alternate sequence operations may
be installed side by side in Decora-style wall plates or rackmount
device panels.

• Alarm Interface: Integral override facilitates use in life safety ap­plications where fire code mandates an alarm interface.

• LEDs provide visual status of connected equipment

• Front adjustable delay allows .5-10 seconds between steps.

• Steel chassis: 19"W x 1.75"H x 9"D. Black.

• Eight barrier strip control outputs

• Each of the eight control outputs includes switch contacts for con­nection to remote power control-activated equipment and auxiliary
dry contacts for the sequential activation of accessory systems such
as projector screens, etc. To sequentially activate RPC connected
equipment, each switch output contact (common, switched relay) is
connected via 2 conductors to an RPC Series remote power control
(order separately) and then to the equipment to be sequentially acti­vated. Note: Each output can be connected to one remote power con­trol with a single piece of equipment or up to ten remote power
controls, in daisy chain format, with multiple pieces of equipment
each. To sequentially activate accessory systems and/or indicator
devices, each control output includes auxiliary contacts (normally
closed, common, normally open) with a rating of 5A for connection to
peripheral devices.

SEQR-8

SEQR-8K

• UL Listed power supply with input 100-240VAC, output 24VDC,
500mA, 6 ft. cord and four plug adaptors — NEMA 1-15 for
North America (factory installed) Schuko CEE 7/16 for central
Europe, BS1362 for the U.K., AS3112 for Australia/New
Zealand.

• Choose rocker or key switch activation.

A&E Specifications

The device for sequentially activating equipment shall be Lowell
rackmount Model No. ________ which shall feature a _____
(key, rocker) activation switch, LEDs and front accessible trim pot
for delay adjustment of sequence operation. Rear panel shall fea­ture eight barrier strip terminals for remote power control units
plus dry auxiliary contacts for accessory devices. It shall have a
separate alarm interface connection and dip switch settings to
bypass selected outputs.

Equipment to be controlled shall be connected to the sequencer
using 2-conductor wire and Lowell's Remote Power Control
__________ (RPC Series required, order separately). Rear panel
shall include contacts to connect momentary switch ________
(RPSW-M, RPSB-M Series optional, order separately) for remote
full sequence operation of sequencer and contacts for maintained
style ASM switch ________ (RPSW-KP-ASM. RPSB-KP-ASM op­tional, order separately) to control alternate sequence operation.

Lowell makes every effort to provide accurate information while reserving the right to change specifications and/or improve manufacturing methods without notification.
©2015 Lowell Manufacturing Company, 100 Integram Dr., Pacific MO 63069 | tel. [phone] | www.lowellmfg.com

Heard Everywhere Since 1947

FLASHING = Down cycle in progress.

STEADY ON = Down cycle completed (system off).

Red LED

Green LED

FLASHING = Up cycle in progress.
STEADY ON = Up cycle completed (system on).

Spec No. 1605 | Rev. 06.09.16 | pg. 2/3

Yellow LED- Alternate Sequence Mode activated

Actuation Switch

Starts sequence up or down.
Activation in in mid-cycle reverses direction of cycle.
Switch Style: Rocker = SEQR-8, Key = SEQR-8K

8 Auxiliary Dry Contacts*

Normally Closed

Common

Normally Open

* May be used to control other systems

(projector screens, lighting, blinds, etc) or

indicators. contact rating is 5A max.

Includes UL Listed Power
Supply 24 VDC 500 mA

Alarm System

Interface

If required by local
building code, facility
usage, or the Fire
Marshal; the system
switches can be
overridden and the
system controlled by

contact closures
provided the fire alarm panel or other similarly in­stalled device. A maintained contact between the
‘com’ terminal and any of the terminals shown will
provide the following functions.

Lock Off

: A maintained contact between the
‘com’ terminal and the ‘lock off’ terminal will
turn the system off and keep it off regardless
of other switch activations. If the system is al­ready off, it will be kept off.

Lock On

: A maintained contact between the
‘com’ terminal and the ‘lock on’ terminal will
turn the system on and keep it on regardless
of other switch activations. If the system is al­ready on, it will be kept on.

Switch Lock

: A maintained contact between
the ‘com’ terminal and the ‘switch lock’ termi­nal will lock the system in its current state, ei­ther on or off, regardless of any other switch
activations. Note: Switch lock function is over-

ridden by External Trigger voltage.

Caution: Do not allow alarm system to make more
than one of the above described contacts at the
same time. Controller board damage may result.

Green LED's- Indicate progress of UP and DOWN sequence
Delay - Recessed trim pot with screwdriver adjust.

8 Switch Contacts for Remote Power Controls*

Common
Switched Relay

*Up to 10 Remote Power Controls (RPC) units can be controlled by each
sequencer step. Note: common connections from multiple remote RPC

units (controlled by different sequence steps) can be consolidated into one
conductor and connected to any common terminal at the sequencer.

Remote Switch(es)

Optional - up to 8 momentary switches

may be connected in parallel.

Flashing LED = cycle in progress
Steady on LED = cycle finished

Momentary Switches with 2 LED’s

Wallplate Series RPSW2-MP (white), RPSB2-MP

(black), 1RU panel Model RPSB2-MR

Flashing LED = cycle in progress
Steady on LED = cycle finished

Wallplate Series RPSW-MP (white), RPSB-MP (black),

Momentary Switches with 1 LED

1RU panel Model RPSB-MR

Maximum wire distances

24ga: 20,000 ft (aprox. 3.5 miles), 22ga.: 31,200 ft.

(aprox. 5.5 miles), 18ga.: 76,800 ft. (aprox 13.5 miles)

Alternate Sequence

Mode (ASM)

V+

Maintained ASM Switch with 1 LED (yellow)

Wallplate Series RPSW-KP-ASM (white),

Sequence Step

Bypass

RPSB-KP-ASM (black),

Com Sw

Alternate Sequence Mode (ASM) allows for the
bypassing of selected outputs for partial system
operation (rehearsals, small events, etc.).

The easy-to-use bypass on the rear of the unit is
a programmable DIP switch (See Sequence
Step Bypass above). Choose steps to be by­passed and set the corresponding DIP switches.
When contact closure is applied between ‘Com’
and ‘Sw’ the chosen steps will be skipped.

Remote switching in Alternate Sequence Mode
requires a special keystyle switch Model RPSW­KP-ASP (white) or RPSB-KP-ASP (black).

Systems can include both an ASM switch and a standard re­mote switch mounted separately or side by side.

Note:

Lowell makes every effort to provide accurate information while reserving the right to change specifications and/or improve manufacturing methods without notification.
©2015 Lowell Manufacturing Company, 100 Integram Dr., Pacific MO 63069 | tel. [phone] | www.lowellmfg.com