Johnson Systems DE90-3000 Series Retrofit Control System - Manual (Page 6)

www.johnsonsystems.com 6
Installation of the new DE90-3000 Series Retrofit System
• Remove your new DE90-3000 Series retrofit control system from the box.
• Install the new backplane and secure it in the rack using the eight (8)
#6-32 x 1/4" mounting screws provided.
• Terminate and connect the OEM fan power cables to the 2-position
breakaway JP5 connector provided located on the lower right-hand side
of the backplane. Be sure that the red wires go to the V+ terminal and the
black wires go to the V- terminal.
• Connect the OEM thermostat and power supplies cable to the 6-position
JP8 connector located on the lower right-hand side of the backplane.
A replacement connector has been provided in the event the OEM
connector has been damaged. Ensure all wire terminations are tight.
• Connect the two (2) OEM SSR control cables to the 18-position JP3 and
JP4 connectors located on the lower left-hand side of the backplane. If
the dimmer rack only contains one (1) OEM SSR control cable, connect it
to JP3. Be sure the cables are connected in the same order and polarity
in which they were disconnected. Extra care should be taken not to bend
or break any of the connector/header pins. Damage to these pins may
require replacement of the entire DE90-3000 backplane and will not be
considered warranty!
• Connect the OEM 3-Phase AC Power Cable to the JP7 connector located
at the lower center of the backplane. Ensure all wire terminations are tight
and the connector is fully seated with the correct polarity.
• Dress out, terminate and connect all other low voltage connections to the
backplane using the breakaway connectors provided. Be sure to isolate
and protect all shield wires. Refer to the Control Input/Output Connections
(page 15 ) section of this manual for details.
• All of the OEM and field wiring connections should now be complete.
• Ensure the provided 26-conductor ribbon cable is connected to the User
Interface Board mounted on the DE90-3000 Front Panel (Faceplate).
• Ensure the provided 3-conductor cable is connected to the Front Panel
DMX-B Input receptacle located on the right-hand side of the DE90-3000
Front Panel (Faceplate).
• Ensure the provided 2-conductor cable is connected to the Panic Switch
located on the right-hand side of the DE90-3000 Front Panel (Faceplate).
• The DE90-3000 Front Panel (Faceplate) can now be installed in the
dimmer rack. Place the two (2) mounting holes on the right-hand side
over the studs that used to secure the panic bracket and finger-tighten on
the two (2) #10-32 locking nuts provided. Finger-start the two (2) #6-32
x 3/8” mounting screws provided in the locations that used to secure the
processor module. Once all the mounting hardware is in place they can be
tightened down.
• Connect the 26-conductor ribbon cable to the backplane J12 (26-
CONDUCTOR RIBBON CABLE TO USER INTERFACE BOARD)
connector.
• Connect the 3-conductor cable to the backplane JP1 (FRONT PANEL
DMX-B INPUT) connector.
• Connect the 2-conductor cable to the backplane JP2 (FRONT PANEL
PANIC SWITCH INPUT) connector.