Retrofit GP Dimming Card
®
SPECIFICATION SUBMITTAL Page
Job Name:
Job Number:
Model Numbers:
GRAFIK SystemsTM Power Equipment
369803a 1 03.26.2014
Retrofit GP Dimming Card
The retrofit GP dimming card controls high‑efficacy
loads and can be retrofitted into existing GP panels in
North America.
Offers a solution for driving compatible LED lamps that
are affected by the slow rise time or voltage ring‑up
caused by the large GP inductor.
Uses the switched‑hot terminal to bypass the existing
inductor without removing it or replacing the wiring
harness.
Functions as a drop‑in replacement for the existing
dimming card; requires a simple relocation of the
dimmed‑hot load wire to the switched‑hot terminal.
Provides better low‑end dimming performance and
more stability for a greater number of LED lamps than
does the existing panel.
Retrofit GP Dimming Card works with
GP Dimming Panels 120/277 V~
GP 3/4 mini panels
GP 8 –24 standard‑size panels
GP 36 144 large‑size panels
Model and Capacity
Input Power Load Circuit Capacity Number of Circuits Model Number
100 –277 V~ 50/60 Hz
Phase to Neutral
300 W LED load, maximum 1 RET‑GPDIMMER
Key Design Features
Lightning strike protection: Meets ANSI/IEEE standard
62.411980. Can withstand voltage surges of up to
6000 V~ and current surges of up to 3000 A.
Holds light levels if data is interrupted; goes to full
conduction if power is restored without data present.
RTISS® filter circuit technology: Compensates for
incoming line voltage variations.
Arcless‑relay, airgap OFF switch (one per load circuit):
Ensures open load circuits when OFF function is
selected; eliminates arcing at mechanical contacts
when loads are switched.
1
Retrofit GP Dimming Card
®
SPECIFICATION SUBMITTAL Page
Job Name:
Job Number:
Model Numbers:
GRAFIK SystemsTM Power Equipment
369803a 2 03.26.2014
Specifications
Sources/Load Types
Operates these sources
1
with smooth, continuous
dimming or in a full‑conduction, non‑dim state:
LED
2,3
Incandescent (Tunsgten)/Halogen
4
HID
5
0 –10 V
6
, DSI
6
, PWM
6
1
Although the Retrofit GP Dimming Card is capable of operating the listed
load types, it is intended to operate LED lamps only
2
Forward‑phase controlled only
3
For compatible LED lamps, refer to Application Note #507 at
www.lutron.com/TechnicalDocumentLibrary/048507.pdf
4
Will have faster rise time (50 μs)
5
Operates in a full‑conduction, non‑dim state only
6
Controlled by optional modules
Regulatory Approval
UL Listed
Diagnostic LED status for RET-GPDIMMER
LED Display Dimming Card Status Possible Cause
Off Not operating
No power;
defective module
1 blink per second
(“heartbeat”)
Normal operation
1 blink per 7 seconds
(“lighthouse”)
Not communicating
with circuit selector
Open control
harness
Mounting and Wiring
Uses existing harness inside the panel.
Requires a simple relocation of the dimmed‑hot load
wire to the switched‑hot terminal.
Refer to the Installation Guide at www.lutron.com/
TechnicalDocumentLibrary/041442.pdf
Environmental/Heat Dissipation
Panel ambient requirement: 32°F to 104°F
(0°C to 40°C); relative humidity less than 90%,
non‑condensing.
2