ERP-24R1-24B1
®
Unison Echo® Relay Panel Mains FeedETC
GENERAL INFORMATION
The Unison Echo Relay Panel is a control-oriented power center built
with today and tomorrow’s lighting loads in mind. It supports up to
24-relays or dimmers with integral branch breakers, power-usage
reporting and sophisticated control inputs. With built-in station,
sensor, DMX and TimeClock controls and Ethernet connectivity, plus
optional 0-10V dimming, DALI output and contact inputs, the Echo
Relay Panel integration opportunities are limitless.
APPLICATIONS
• Theaters
• Schools
• Houses of worship
• Conference centers
• Retail shops and restaurants
FEATURES
• Main Feed Relay panel with feed options for:
- Three-Phase 120/208V four-wire plus ground
- Bi-Phase 120/240V three-wire plus ground
• 24-position relay panel with support for one-, two-, or threepole relays and support for 300W phase adaptive dimmers
• 30-position breaker subpanel with support for 1-, 2-, or
3-pole breakers, including 1- and 2-pole 120V GFCI
• 14 in. width and 4 in. depth allows the cabinet to be flush- or
surface-mounted in standard stud-width construction
• Echo, sACN, DMX-512, TimeClock, or stand-alone control
• Built-in EchoConnect
sensors and 5 output products
• Built-in network interface provides:
- Advanced control of relays over streaming ACN (sACN)
- Measured energy usage reporting per branch circuit
- Web UI for configuration
• Local control with Astronomical timeclock and manual
override per circuit
• UL924 LISTED emergency control bypass contact input
• UL and cUL LISTED
®
power supply for up to 6 Echo stations/
Echo Power Control Series
ORDERING INFORMATION
Standard Relay Units
MODEL DESCRIPTION
ERP-24R1-24B1 Echo Relay Panel with 24 single-pole relays, 24
single-pole breakers, 120/208V three-phase
four-wire plus ground main lug input
ERP-12R2-12B2 Echo Relay Panel with 12 two-pole relays, 12
two-pole breakers, 120/208V three-phase
four-wire plus ground main lug input
ERP-24R1-24B1-2 Echo Relay Panel with 24 single-pole relays,
24 single-pole breakers, 120/240V bi-phase
three-wire plus ground main lug input
Note: For non-standard model numbering see page 5
Door Options
ERP-FMD Flush-mount door for 120V Echo Relay Panel
ERP-SMD Surface-mount door for 120V Echo Relay Panel
Main Breaker Options
7123K1001 Main Breaker; 120V Single-phase; 100A; 22kA SCCR
7123K1002 Main Breaker; 120V Single-phase; 200A; 22kA SCCR
7123K1003 Main Breaker; 120V Three-phase; 100A; 10kA SCCR
7123K1004 Main Breaker; 120V Three-phase; 200A; 10kA SCCR
7123K1005 Main Breaker; 120V Three-phase; 200A; 22kA SCCR
7123K1006 Main Breaker; 120V Three-phase; 200A; 42kA SCCR
Accessories
ERP-DIM 300W Phase Adaptive Dimmer Module
ERP-LVD 0-10V Dimming Control Option
ERP-DALI DALI-Control Option
ERP-CI Contact-Input Option
ERP-RTO Ride-Thru Option
ERP-VB Voltage-Barrier Kit
Echo Power Requirements
EchoConnect: 1 Unit of Output Power
Auxiliary Power: Not Required
Built-in EchoConnect Power Supply
EchoConnect: Provides 6U of control power and
an additional 5U of Output Power*
Auxiliary Power: Not Provided
*Note: Built in power supply can be disabled when used with external
16U EchoConnect Power Supply or when multiple relay panels are used
in a single system
Echo Presets
Supports 64 Echo Presets
1 of 5
Unison Echo Relay Panel Mains FeedETC
Echo Power Control Series
SPECIFICATIONS
APPROVALS AND CERTIFICATIONS
- UL508 LISTED
- UL67 LISTED
- UL924 LISTED
• Complies with ANSI E1.11 DMX512-A standard
• Complies with ANSI E1.31 streaming ACN standard
USER INTERFACE
• Graphical display with LED backlight
• Button interface with:
- 0-9 number buttons
- Up, down, back and enter navigation buttons
- “Light bulb” test button for local activation of preset,
sequence and set level overrides
• USB interface for upload of setup and software updates
• Onboard Web UI for simple configuration and management
MECHANICAL
• Enclosure constructed of 16-gauge steel finished in black,
fine-textured, scratch-resistant powder coat pain
• Door options available for surface- or recess-mount
applications.
- Flush-mount door extends 1in. beyond all panel edges to
hide wall cutout
• Removable outer panel includes integral locking door to limit
access to electronics, breakers and local relay overrides
• Full front access with no side clearance required
• Removable covers for access to Class 1 and Class 2 wiring
ELECTRICAL
• Main feed power input available to support:
- 120/240V bi-phase three-wire plus ground
- 120/208V three-phase four-wire plus ground
• Separate wiring chambers for Class 1 and Class 2
terminations
• Max input current: 200A
• Main circuit breaker options: 100A and 200A
• Short-circuit rating: 10,000-42,000 amps symmetrical
• 10A, 15A and 20A branch circuit breakers standard; 80%
rated
- 1- and 2-pole 120V GFCI breakers available upon request
• Inrush-pulse tolerance: 8-10.5 times rated current for halfcycle at 60Hz
CONTROL ELECTRONICS
• Relay modes: Normal (priority/HTP), latch-lock or last-action
• Configurable DMX on/off threshold
• Status feedback for breaker state, relay state, current draw
per circuit, phase voltage and energy usage per circuit
• Built-in Echo control supports:
- Up to eight spaces with 16 presets per space
- 16 zones per space
- One 16-step sequence per space
- UL924 LISTED emergency control bypass
- Time-of-day and astronomical timeclock with flick-warn
and holiday overrides
• Configurable data-loss behavior supports:
- Play preset
- Hold last look
- Wait and fade
ENVIRONMENTAL
• Thermal: 0-40°C; 32-104°F operating temperature
- 16A circuit (20A breaker) - 52.38 BTU/hr
- 300W circuit (with dimmer module) - 11.78 BTU/hr
• Humidity 5-95% non-condensing
SPECIFICATIONS
RELAY RATINGS
• 20A Ballast (HID)
• 16A Electronic Ballast
• 20A Tungsten
• 20A Motor Load
• Isolation: 4000V RMS
• State: Latching
• Relays are mechanically held
• Life:
- 100,000 cycles at full resistive load
- 30,000 cycles motor, inductive or tungsten
• Current-reporting accuracy: +/- 5% of connected load
DIMMER RATINGS
• Phase-adaptive, default reverse phase
• 300W resistive, electronic, or magnetic load capacity
- Magnetic transformers must be properly loaded to their
rated current
- Use care when retrofitting magnetic transformers with LED
loads to ensure proper loading
• 7,200W maximum panel load with (24) 300W dimmer
modules installed
SHORT-CIRCUIT CURRENT RATING AND LUG SIZING
OPERATING
VOLTAGE
120/240V 100A,200A 22kA 1AWG-300kcmil
120/208V 100A 10kA 4AWG-3/0
All Main Lug only 10kA 4AWG-300kcmil
Relay NA NA 6-14AWG
GND/Neutral NA NA 6-14AWG
Note: Main feed lugs accept copper or aluminum wire; load terminals
accept copper wire only
ACCESSORIES
0-10 Dimming Option
• 24 outputs of 0-10V sink dimming control rated
Contact Input Option
• 24 dry contact inputs for direct control of relays
DALI Control Option
• 24 control loops of broadcast DALI control
• Each loop supports up to 64 ballasts
• External DALI power supply required
Ride Thru Option
• Short-term power backup of control electronics
• Automatically engages when power is lost
• Recharges during normal power operation
Tamper-proof Hardware Kit
• Special screw heads prevent access to panel interior
2 of 5
MCB OPTION SCCR
RATING
200A 10kA 4AWG-3/0
200A 22kA, 42kA 3/0-300kcmil
for 400mA per output
INPUT LUG WIRE
SIZE
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