Honeywell Q7750A SPECIFICATION DATA

HONEYWELL EXCEL 5000 OPEN SYSTEM

FEATURES

 Interfaces EXCEL 5000® System C-Bus to Excel 10

 Provides a B-Port for connection to a PC installed

 User-access of subsystem data via

 Energy management strategies are

 Control interaction strategies are

 Time programs are CARE-programmable.
 Alarm reporting for Excel 10 LonWorks® network.
 Application alarm reporting.
 Full interaction with other controllers on C-Bus using

 V
 Passive buswide access on C-Bus.

GENERAL

The Q7750A Excel 10 Zone Manager is a programmable
master controller for an Excel 10 subsystem. It provides
energy management functions and communication interfaces
between EXCEL 5000 System products and the Excel 10
Echelon L
(9600 baud and 1M baud) and L
communication interfaces. It also maps user selectable Excel
10 subsystem datapoints into C-Bus points with a full set of
point attributes, including user addresses.

ONWORKS® network. The Q7750A provides C-Bus

ONWORKS® (78k baud)

DESCRIPTION

The Q7750A is available in two hardware versions:

 The Q7750A1005 has a twisted pair topology (TPT)

 The Q7750A2003 has a free topology (FTT) L

The Q7750A is delivered with operating system software on
EPROMs. The Zone Manager contains all time programs,
user addresses, and Excel 10 subsystem mapping
information. Mapping is the term used to describe the
allocation of Excel 10 subsystem data to Q7750A datapoints
that are accessible from the C-Bus. This mapping process is
executed using a PC-based software tool (CARE and
E-Vision).

Excel 10

Q7750A ZONE MANAGER

SPECIFICATION DATA

®

Echelon

with the XL-Online, CARE, or LiveCARE engineering
tools or to the XI582 Operator Interface.

CARE-programmed user-defined point names.

CARE-programmable.

CARE-programmable.

global data.

min

L

ONWORKS® transceiver.

transceiver;

LONWORKS® network.

and V

of Excel 10 VAVII editable via XBS.

max

ONWORKS®

® U.S. Registered Trademark

Copyright © 2009 Honeywell Inc. • All Rights Reserved EN0B-0647GE51 R1109 (74-2950-3)

EXCEL 10 Q7750A ZONE MANAGER – SPECIFICATION DATA

LonWorks

SERIAL ADAPTER

C-BUS

EXCEL 500

PC TOOLS
E-VISION
CARE
LiveCARE

EXCEL 10

Q7750A

ZONE

MANAGER

ENTERPRISE BUILDING

SUPERVISOR

LonWorks COMMUNICATION NETWORK LonWorks COMMUNICATION NETWORK

EXCEL 10 FAN COIL
UNIT CONTROLLER

LonWorks

ROUTER

EXCEL 10
W7751H3007
SMART VAV2

ACTUATOR

Honeywell

°C

WALL MODULE

-

+

EXCEL 10

EXCEL 10 W7751F

PANEL PLENUM

MOUNT VERSION

VAV CONTROLLER

Honeywell

-

°C

+

Honeywell

°C

WALL MODULE

-

+

EXCEL 10

WALL MODULE

EXCEL 10

Fig. 1. Example of a Q7750A Excel 10 Zone Manager subsystem

SPECIFICATIONS

Table 1. System capabilities

category limits / rates / options

Number of devices on C-Bus Maximum of 29.

Number of Excel 10 devices on
L

ONWORKS®

Number of points supported Maximum of 1000.

C-Bus baud rates

Maximum of 120 (one Q7751A Router is required for every segment containing 60
Excel 10 devices).

With XD 505 submodule option: 9600 baud.
With XD 508 submodule option: 1 Mbaud.

EN0B-0647GE51 R1109 (74-2950-3) 2

EXCEL 10 Q7750A ZONE MANAGER – SPECIFICATION DATA

LED Status Information

Table 2. Q7750A Excel 10 Zone Manager LED status information

LED no. explanation color LED function if ON LED function if OFF

1 5V (POWER) green Power ON Power OFF

2 Contr. (RUN) green Software running, watchdog triggered Watchdog locked, software not working

3 B-PORT (send) yellow Q7750A sends data on RS232 port* No communication

4 B-PORT (receive) yellow Data sent to Q7750A on RS232 port* No communication

5 C-Bus (send) yellow Q7750A sends data on C-Bus* No data sent on the C-Bus

6 C-Bus (receive) yellow Q7750A receives data from C-Bus* No data received from the C-Bus

ONWORKS® network activity* (see

7 LONWORKS® yellow

L
NOTE)

8 Service LED red Blinking not configured

*LEDs 3 through 7 with the frequency of data being transmitted or received (see NOTE).

NOTE: LED 7 is used to display L

ONWORKS® network activity. In the case of the C7750A1005, it flickers when data is

transmitted or received, but in the case of the C7750A2003, it flickers only while data is being received.

Communications

Via LONWORKS®

The Q7750A uses a transformer-coupled communications
port with encoded data presented to controllers and devices
on the L
is insensitive to polarity, eliminating installation errors due to
miswiring.

The maximum allowed number of nodes per L

60. With the addition of a Q7751A Router, the maximum
allowed number of nodes increases to 120 or 60 per
L

The recommended wire for the L
AWG (Belden part number 9D220150) or plenum rated Level
IV, 22 AWG (Belden part number (H2201504) non-shielded,
twisted pair, solid conductor wire. Honeywell L
cable is available. See also Excel 10 Q7750A Zone Manager
– Installation Instructions (95-7509).

Additionally, Echelon approved shielded cable can be used.
Contact Echelon Corp. Technical Support for the
recommended vendors of Echelon-approved cables.

In the case of the C7750A2003: An FTT network can
accommodate bus, star, loop or any combination of these
topologies. This simplifies system installation and makes it
easy to add nodes should the network need to be expanded

In the case of the C7750A1005: The TPT L
daisy chain topology - the bus must go serially from one
controller to another without branching. The C7750A2003 can
be used to replace the C7750A1005 using a TPT/FTT router.
The maximum allowed length of an FTT network is dependent
on a number of factors, see Excel 50/500/800 Lonworks
Mechanisms – Interface Description (EN0B-0270GE51) or
Excel 10 Q7750A Zone Manager – Installation Instructions
(95-7509) for details.

ONWORKS® at 78K bits per second. The LONWORKS®

ONWORKS® is

ONWORKS® segment.

ONWORKS® will level IV, 22

ONWORKS®

ONWORKS® is a

Via C-Bus

The C-Bus transmits data between EXCEL 5000 System
Controllers, Devices and Building Supervisors at 9600 baud
or 1 Mbaud (921 600 baud).

The maximum allowed C-Bus network length is 1200 m, but
with the addition of an XD509 Excel High Speed Repeater,
the C-Bus can be extended (an additional 1200 m for each
XD509).

The maximum allowed number of controllers or devices per
C-Bus is 29.

Memory

The operating system EPROMs contain 768 Kbytes of space.
There are also 240 Kbytes of RAM and 1 Kbyte of EEPROM
space available for software use.

Connections

There are two connectors available on the Q7750A Excel 10
Zone Manager:

 Connector 1; power, C-Bus, and L

 Connector 2; B-Port (RS-232) for connection to a PC

installed with the XL-Online, CARE, LiveCARE, or E­Vision engineering tools or to the XI582 Operator
Interface.

Hardware

The CPU is based on an INTEL 80C188XL Microprocessor
and also uses an Echelon 3120

Power Supply

24 Vac, with a valid range (of 19.4 to 28.8 Vac) at 50/60 Hz.

Power Consumption

6 VA maximum at both 50 and 60 Hz.

No L

ONWORKS® network activity

ONWORKS® initialized and working

L
correctly

ONWORKS® network.

®

Neuron® Chip.

3 EN0B-0647GE51 R1109 (74-2950-3)

EXCEL 10 Q7750A ZONE MANAGER – SPECIFICATION DATA

Battery Back-Up

The back-up battery, used for RAM and the real-time clock, is
a 3-V Lithium (type CR 1/2 AA, VARTA number 6127 or
equivalent). The backup time for a new battery is 30 days with
a minimum of 72 hours after the first battery empty (voltage
falls below 2.5 V) alarm is detected.

Mounting Options

The Q7750A can be mounted in a wiring cabinet or attached
to 35 by 7.5 mm EN 50 022 DIN rail.

Mechanical

Dimensions in mm (H x W x D): 246 x 192 x 66.

Weight: 1.2 kg.

Housing Material

ABS plastic.

Environmental Ratings

Operating Temperature: 0° to 50 °C

Shipping Temperature: -34° to +60 °C

Relative Humidity: 5% to 90%, non-condensing.

Approval Bodies

The Q7750A1xxx is listed under UL 864 (UUKL), File Number
S4804.

The Q7750A meets FCC part 15 class B requirements.

Protection Class: IP30.

Electromagnetic: EN 50081-1, EN 500 82-1.

Accessories

The following accessories are available:

Table 3. Accessories

XI582 Operator terminal with menu-controlled

data access

XW565 (or
XW582 + XW584)

5 m cable for connecting B-Port to the
XI582 Operator Interface

XW566 15 m cable for connecting B-Port to the

XI582 Operator Interface

XW567 2.5 m cable for connecting B-Port to a PC

XD505 9600 baud C-Bus interface card

XD508 921 600 baud C-Bus interface card

14507324-001/U C-Bus repeater panel mount (without

housing)

14507324-002/U C-Bus repeater panel mount (with housing)

XDM506 Modem submodule

Associated Documentation

form no. description

95-7509 Excel 10 Q7750A - Installation Instructions

EN0B-0270GE51 Excel 50/500/800 Lonworks Mechanisms –

Interface Description

Manufactured for and on behalf of the Environmental and Combustion Controls Division of Honeywell Technologies Sàrl, Rolle, Z.A. La Pièce 16, Switzerland by its Authorized Representative:

Automation and Control Solutions

Honeywell GmbH
Böblinger Strasse 17
71101 Schönaich / Germany
Phone: [phone]
Fax: [phone]
http://ecc.emea.honeywell.com
Subject to change without notice. Printed in Germany

EN0B-0647GE51 R1109 (74-2950-3)