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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.
5
INSTALLATION INSTRUCTIONS
MRIPSF-480_F-7499_031919
Wiring Procedure – Multiple Power Supply/DC Filters
Installations involving many luminaires within a single shielded room may require multiple power supplies (and
EMI filters) to handle the load. Please see “Maximum Fixture Connection” to determine if the application requires
multiple supplies. Wiring guidelines are the same as the previous section, please see Figure 4 below.
Wiring Procedure – Dimming Line
All Kenall MRI luminaires can dim via 0-10V control. Kenall recommends the Lutron Diva (DVSTV) and Lutron Nova
T (NTSTV-DV) series to ensure the full range of dimming can be achieved.
NOTE:
In the situation where the luminaire groups are controlled by separate dimming circuits, it is imperative that
each circuit utilizes a dedicated control line filter (Kenall MRIFD-1A or equivalent).
1. Run low-voltage wiring, 18-GA minimum, from the dimmer to the control line filter through the grounded
conduit installed in “0-10V Dimming Filter Mounting Procedure”.
WARNING: To prevent electrical shock, manually discharge the internal filter capacitors by
temporarily connecting field terminals to ground (wearing insulated gloves is recommended).
2. Solder the dimming line positive (violet) and negative (gray) conductor to solder terminal lugs L1 and L2,
respectively.
3. Remove lose hardware supplied on the ground screw terminal marked with the Green label and install a
ground wire identical in size and insulation rating to the grounded and ungrounded circuit supplied conductor,
except it shall be colored Green or Green-Yellow. Use a crimped or solder-type ring connector (not supplied, see
Figure 5).
Figure 4: Multiple-Supply System Schematic
Fixture
Group 1
Fixture
Group 2
Fixture
Group N
RED
RED
BLACK
BLACK
BLACK
RED
COMMON
HOT
120-277VAC
50/60 Hz
MRIPSF-480
AC
IN
AC
IN
AC
IN
+
24V
–
+
24V
–
+
24V
–
EMI
Filter
EMI
Filter
EMI
Filter
EMI
Filter
+
–
0-10V Dimmer
(by others)
MRIFD-1A
(or equal)
