Honeywell W7750A 사용자 설명서

EXCEL 10 W7750A,B,C CONSTANT VOLUME AHU CONTROLLER

74-2958—1

All of the NvName values that are stored in EEPROM memory
have a prefix of nci.

NOTE:

These parameters are stored in EEPROM and are
limited to 10,000 writes. Do NOT use them as
outputs from Control Strategies,Time Programs, or
Switching Tables. If these points are changed more
than 10,000 times, irreversible hardware failure
results

Tables 20 through 28 provide point attributes as follows:

Engineering
Units—

This field indicates the point valid range and

displayed Engineering Unit. For digital points,
the valid states and the corresponding
enumerated values are shown.

Default—

The value or state of the point on controller
start-up.

E-Vision
(M) Monitor— These points are viewable within the E-Vision

Controller Monitoring on-line screen.

(P) Parameter—These points refer to control parameters

settable in the Application Selection dialog
boxes in E-Vision.

(S) Schematic—These points appear in E-Vision monitor

mode graphics.

Shareable— These points can be set up for data sharing in

Command Multiple Points, Read Multiple
Points, or Refer Excel 10 Points as either a
data source or a destination.

Mappable— These points can be converted into a C-Bus

point used by C-Bus devices. A mappable point
has a one-to-one relationship with a C-Bus
User Address.

Direct
Access—

These points are accessible through the
Subsystem Points mechanism in XBS.

Hardware
Config.—

These are points that involve controller I/O
configuration. Any change to Hardware Config.
points causes the W7750 to perform an
application reset; therefore, these points can
only be modified off-line.

Manual
Config.—

These points are used to set the controller
outputs when in manual mode. The W7750 is
placed in manual mode through a menu
selection in the E-Vision Controller Monitor
screen.

Test—

These points can be controlled in E-Visions test
mode that is used for field checkout/ debuging.

Failure Detect
Input Point— These points need an update periodically or a

communication alarm is generated. The failure
detect mechanism is only active when the NV is
bound (bindings are configured using Refer
Excel 10 points). The time between the updates
is user settable.

Non-Failure Detect
Input Point— These points (which are NVs that are bound or

unbound) do not check for an update
periodically and do not generate an alarm.

NOTES:

1. Mapped points can be viewed and changed, if

needed, on the XI581, XI582 and XI584 C-Bus
devices and on an XBS central and on E-Vision.

2. All Excel 10 points, mappable and calibration,

configuration and internal data sharing points, can
be viewed and changed, as allowed, via Direct
Access (DA) mode in the XBS subsystem menu
or via XI584.