Retrofit GP Dimming Card
®
SPECIFICATION SUBMITTAL Page
Job Name:
Job Number:
Model Numbers:
GRAFIK SystemsTM Power Equipment
369803b 1 05.29.14
Retrofit GP Dimming Card
The Retrofit GP Dimming Card is intended to be used
by customers who are currently using a GP dimming
panel to dim screw-in incandescent lamps but wish to
retrofit their system with more energy efficient screw-in
replacement LED lamps.
Certified for use in North America and will control up
to 300 W of forward-phase controlled 120 V~ LED
lamps. Although it is capable of operating other load
types (see Specifications on page 2) it is intended to
operate LED lamps only.
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 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. For recommended LED lamps,
refer to Application Note #507 at www.lutron.com/
TechnicalDocumentLibrary/048507.pdf
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 62.41-1980. 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, air-gap OFF switch (one per load circuit): Ensures open load circuits when OFF function is
selected; eliminates arcing at mechanical contacts when loads are switched.
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Retrofit GP Dimming Card
®
SPECIFICATION SUBMITTAL Page
Job Name:
Job Number:
Model Numbers:
GRAFIK SystemsTM Power Equipment
369803b 2 05.29.14
Specifications
Sources/Load Types
Operates these sources with smooth, continuous
dimming or in a full-conduction, non-dim state:
LED (forward-phase controlled, 120 V~ only)
Incandescent (Tungsten)/Halogen (will have faster rise
time – 50µs – than the current GP dimming card)
HID (operates in full conduction, non-dim state only)
0-10V, DSI, PWM (requires an additional module)
Regulatory Approval
UL Listed
CSA certified
Diagnostic LED status for RET-GPDIMMER
LED Display Dimming Card Status Possible Cause
Off Not operating
No power;
defective card
1 blink per second
(“heartbeat”)
Normal operation
No output
Load wire not
moved from
dimmed-hot to
switched-hot
No longer dimming (on
full)
Missing triac
screw
1 blink per 7seconds
(“lighthouse”)
Not communicating
with circuit selector
Control harness
not connected
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.
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