Honeywell Q7751A User Manual
Q7751A Routers
DESCRIPTION
The Q7751A Router doubles the bus length and the number
of nodes on the L
ONWORKS
Q7751A2010 has an FTT-10 transceiver and is used on
L
ONWORKS networks with the Excel 10 series 2000 family of
controllers. The Q7751A1012 has a TP-78 transceiver and is
used on L
ONWORKS networks with the Excel 10 VAV1 series
1000 controllers.
The Q7751A is a two-piece design allowing pre-wiring and
cable testing prior to installing the router. The front panel
includes a printed circuit board (PCB) with active electronics.
It also has a service switch and two service LEDs; a
combination power/wink LED, an activity LED and two
network connectors. See Fig. 1 for front panel view.
®
(E-Bus) network. The
BA
1
1
2
ULU
LPR-10
L
The router is installed in a Type 2 base plate. Wiring
connections are presented in Table 1. Specifications for the
router are shown in Table 2. Network and power are
connected to screw terminals located on a Type 2 base plate.
The router is plugged into the base plate. No wiring is ever
connected directly to the router. A writing space is provided
on the back of the base plate for recording the date of
installation and other important information. See Fig. 2 for
front view of base plate. See Fig. 3 for rear view of base
plate.
2
TEST
POINTS
1
3
BA
INTERFACE
CONNECTOR
2
SERVICE
LEDs
CHANNEL A
CHANNEL B
SERVICE
SWITCH
PACKET ACTIVITY LED ROUTER
TRANSFERRING PACKETS: FLASHING
1
OUTLET ACCESS JACKS; USE FOR ACCESS TO L
2
ROUTER INTERFACE MODEL AND SOFTWARE REVISION NUMBERS.
PEEL-OFF CODE 39 FORMAT BAR CODE OF ROUTER INTERFACE
3
®
Neuron
CHIP ID NUMBER.
B
A
3
3
POWER LED:
POWER ON: ILLUMINATED
CONTINUOUSLY
ONWORKS
BUS.
Fig. 1. Q7751A Router front plate.
®U.S. Registered Trademark
Copyright © 1999 Honeywell Inc. • All Rights Reserved
M16383
2
1
THREADED SCREW HOLES FOR ATTACHING ROUTER INTERFACE TO
BASE PLATE. USE 8-32, 3/8 IN. SCREW, Echelon 205-0130-01 OR EQUAL.
0.230 IN. HOLES FOR ATTACHING BASE PLATE TO ELECTRICAL BACK
2
BOX OR SUB-PANEL.
0.180 X 0.280 IN. HOLE FOR THE ATTACHING BASE PLATE TO
3
ELECTRICAL BACK BOX OR SUB-PANEL. USE 6-32, FLAT-HEAD,
3/8 IN. MINIMUM SCREW.
1
M16381
Fig. 2. Q7751A front view of base plate.
95- 7510- 3
Q7751A ROUTERS
WIRE
ENTRY
TERMINAL
SCREW,
TIGHTENING
TORQUE 4
LBS. IN.
1
2
3
4
1
2
THREADED SCREW HOLES FOR ATTACHING ROUTER INTERFACE TO
BASE PLATE. USE 8-32, 3/8 IN. SCREW, Echelon 205-0130-01 OR EQUAL.
0.230 IN. HOLES FOR ATTACHING BASE PLATE TO ELECTRICAL BACK
BOX OR SUB-PANEL.
0.180 X 0.280 IN. HOLE FOR THE ATTACHING BASE PLATE TO
ELECTRICAL BACK BOX OR SUB-PANEL. USE 6-32, FLAT-HEAD,
3/8 IN. MINIMUM SCREW.
WRITING SPACE FOR INSTALLER. USE FINE POINT
SANFORD SHARPIE MODEL 30001 OR EQUAL.
3
1
23456789
11 12 13 14 15 16 17 18
10
2
4
1
M16382
Fig. 3. Q7751A rear view of base plate.
The Type 2 base plate is keyed to prevent accidental
insertion of an incorrect module. The router is attached to
the base plate with two 8-32 x 3/8 in. screws (provided).
The Type 2 base plate mounts to either a suitable U.S. four
in. square, two in. deep (10.16 cm x 5.08 cm) electrical
box, U.S. double gang electrical box or an IP-65 (NEMA 4)
enclosure. See Fig. 4 and 5.
4 IN. SQUARE
ELECTRICAL
BOX
BASE PLATE
ROUTER MODULE
M16384
Fig 4. Four in. square, two in. deep electrical box
mounting configuration.
DOUBLE GANG
ELECTRICAL BOX
BASE PLATE
ROUTER MODULE
Fig 5. Double gang two in. deep electrical box
mounting configuration.
95-7511—2 2
M16385
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