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PM7600B PROGRAM MODULE DESCRIPTION
The PM7600B Program Module is an EPROM used
with the Network Compatible W7600 Control System. The
program module
must
be installed in the W7600 2XXX
Control Module only. The PM7600B is factory-installed in
specific W7600 models.
The PM7600B Program Module allows the W7600 to
precisely control discharge air (DA) temperature and static
pressure in a variable air volume (VAV) application. Along
with basic temperature and static pressure control, the
PM7600B may also be programmed to control condenser
pumps and economizers. Also, it controls safety features
such as compressor lockout on high or low refrigerant
pressure, fan failure and dirty filter.
Additional networking features include:
• Network time of day control of assigned digital out-
puts for use in lighting control and other applications.
• Demand limit control via change of discharge air
temperature setpoint from a network-provided digital
input.
• Programmable zone specific time of day bypass to the
occupied state using the W7620 VAV box controller.
The S7600A Keyboard Display Module is used to pro-
gram and monitor discharge air temperature, static pres-
sure, space and outdoor air temperatures, and all alarms and
setpoints. The PM7600B contains the control options, con-
trol program and application-specific screens for the S7600A.
The PM7600B Software provides options for W7600/
W7601 analog and digital inputs and outputs. These moni-
toring and control points are used for operation of a basic
VAV system. Input and output points must be configured
using the ZM7601 or ZM7603 Software package and an
MS-DOS compatible PC. For more specifics about avail-
able point options, see the PM7600B Input and Output
Options section. See Fig. 2 for a typical VAV application.
W7600 CONTROL SYSTEM DESCRIPTION
The Network Compatible W7600 Control System, see
Fig. 1, provides a complete network of direct digital control
using a two-wire RS-485 bus. The Q7640 Network Inter-
face Unit provides the communication capability on the
network, as well as remote communication through an
external modem. The network allows sharing outdoor air
temperature and other data between controllers, reducing
the wiring and accessory costs of the installation. Addi-
tional features of the Q7640 NIU include trend logging,
alarm dialout to remote personal computers and remote
monitoring capability.
Control functions are provided through the W7600 Con-
trol Module. The PM7600B Program Module is an EPROM
that resides in the W7600 and provides customized soft-
ware for variable air volume systems, see Fig. 2. Each
model of the PM7600 contains algorithms and control
strategies designed to control a specific type of equipment.
The W7600 controls by monitoring analog and digital
inputs, processing the PM7600 algorithms and controlling
the analog or digital outputs provided in the W7600 Control
Module.
The W7601 Module allows for expansion of inputs and
outputs. The R7600 Relay Module is connected to the
W7600 or W7601 to provide digital outputs. Local moni-
toring and programming of the W7600 is provided by the
S7600 Keyboard Display Module. The Q7601 Setpoint
Module is designed to allow setpoint control from a stan-
dard potentiometer rather than from the S7600.
PM7600B
SYSTEM DESCRIPTION • ORDERING INFORMATION
System Description
Ordering Information
When purchasing replacement and modernization products from your TRADELINE
®
wholesaler or distributor, refer to the Tradeline
Catalog or price sheets for complete ordering number, or specify—
1. Order number.
2. Accessories, if desired.
3. Order additional system components and system accessories separately.
If you have additional questions, need further information, or would like to comment on our products or services, please write or phone:
1. Your local Home and Building Control Sales Office (please check the white pages of your phone directory).
2. Home and Building Control Customer Logistics
Honeywell Inc., 1885 Douglas Drive North
Minneapolis, Minnesota 55422-4386 (612) 951-1000
In Canada—Honeywell Limited/Honeywell Limitée, 740 Ellesmere Road, Scarborough, Ontario M1P 2V9 International Sales and
Service Offices in all principal cities of the world. Manufacturing in Australia, Canada, Finland, France, Germany, Japan, Mexico,
Netherlands, Spain, Taiwan, United Kingdom, U.S.A.
Содержание PM7600B
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