www.kenall.com | P: 800-4-Kenall | F: 262-891-9701 | 10200 55th Street Kenosha, Wisconsin 53144, USA
This product complies with the Buy American Act: manufactured in the United Stateswith more than 50% of the component cost of US origin It may be covered by patents
found at www.kenall.com/patents. Content of specification sheets is subject to change; please consult www.kenall.com for current product details. ©2019 Kenall Mfg.Co.
3
INSTALLATION INSTRUCTIONS
LPS_F-5290_090418
5. Make electrical connections. Disconnect facility power to the electric power supply leads. Connect fixture leads
to power supply leads using connectors suitable for the gage and number of wires being used (not included).
MRI Fixtures:
a. If a 0-10V dimming circuit is to be connected, install at this time. The 0-10V dimmer must be installed
outside the shielded MRI environment with the Kenall MRIFD-1A dimming line filter (or equivalent)
installed in accordance with the supplied installation instructions. Kenall recommends the Lutron Diva
(DVSTV) and Lutron Nova T (NTSTV-DV) series to ensure the full range of dimming can be achieved.
b. Run DC supply wiring, equal in size and temperature rating to the filter input wiring, between the filter
output cables and the first luminaire within the shielded room. Follow recommended wiring layout
described below. All wiring must be within completely-enclosed, grounded conduit suitable for an MRI
environment. Any gaps, regardless of size, must be closed or wrapped in copper foil tape. Special attention
should be paid to the wiring entry point into the shielded space. Class 1 wiring methods are required.
c. Run the dimming signal wiring, equal in specification to the filter input wiring, between the filter output
cables and the first luminaire within the shielded room. Maintain polarity between input and output sides
of the filter and follow wiring recommendation below. All wiring must be within completely enclosed,
grounded conduit suitable for an MRI environment. Any gaps, regardless of size, must be closed or wrapped
in copper foil tape. Special attention should be paid to the wiring entry point into the shielded space. Cap
gray and violet leads at luminaire(s) if dimming function is not implemented.
NOTES: To prevent MRI machine interference, all DC power and dimming signal wiring must be completely shielded
within grounded conduit.
Luminaire 1
Luminaire 2
Luminaire N
(last)
EMI
Filter
EMI
Filter
RED
RED
BLACK
BLACK
VIOLET
GRAY
BLACK
RED
Repeat
Wiring As
Needed
INSIDE MRI ROOM
OUTSIDE MRI ROOM
+
–
NOTE: ALL WIRES INSIDE MRI ROOM TO BE
INSIDE GROUNDED RIDGID ALUMINUM CONDUIT
0-10V Dimmer
(by others)
COMMON
HOT
MRIPSF-480
MRIFD-1A
(or equal)
120-277VAC
50/60 Hz
AC
IN
+
24V
–
Single-Supply System Schematic
