Honeywell T7460C, T7460A, T7460D, T7460B, T7460F User Manual

HONEYWELL EXCEL 5000 OPEN SYSTEM

FEATURES

• Mountable on 2.36 in. (60 mm) wall outlet box or

• Models with setpoint adjustment.

• Models with bypass (override) button and LED.

• Models with 3-position (auto/0/1) or 5-position

• Setpoint dials with Celsius relative or Celsius absolute

T7460A,B,C,D,E,F

WALL MODULES

SPECIFICATION DATA

directly on a wall.

(auto/0/1/2/3 speed) fan switch.

scale.

GENERAL

The T7460A,B,C,D,E,F are a family of direct-wired wall
modules for use with Honeywell Excel 10 W7750, W7751,
W7752, W7753, W7761, W7762, W7763, and Excel 600,
500, 100, 50, 20 Controllers. All models have a space
temperature sensor; some models have setpoint adjustment,
bypass button and LED, and fan switch.

• Locking cover on all models.

• Operating range 43…104°F (6…40°C).

• CE-approved.

• IP 30 housing.

DESCRIPTION

The T7460A,B,C,D,E,F packages include two setpoint dials.
By default, the “Celsius Relative” type (-5 … +5) is mounted,
but can be easily replaced with the “Celsius Absolute” type
(12…30°C).

® U.S. Registered Trademark
Copyright © 2005 Honeywell Inc. • All Rights Reserved 74-3083-2

T7460A,B,C,D,E,F WALL MODULES

F

t

r

resis

t

ohms

SPECIFICATIONS

Table 1. T7460 Wall Module models

type no. setpoint adjustment

bypass

T7460A -- -- --

T7460B -- --

T7460C 3 --

12…30 °C (absolute)

T7460D -- 5

T7460E 3 3

T7460F

NOTE: Not all of the T7460 Wall Modules are compatible with W7751A,C,E,G (VAV1) and W7752D1 (FCU1) controllers.

NOTE: Refer to T7460A,B,C,D,E,F Installation Instructions (product literature no.: EN1B-0291GE51) for wall module settings

and wiring diagrams.

Construction:

Two-piece construction: cover and internally wired subbase.
Field wiring 16 to 22 AWG (1.5 to 0.34 mm
terminal block on the PCB.

Temperature Sensor Operating Range:

43…104°F (6…40°C).

T7460A,B,C,D,E,F 20kΩ Sensor:

All T7460 models are furnished with a 20kΩ NTC temperature
sensor following a specific temperature-resistance curve. See
Fig. 1. Honeywell controllers used with the T7460 employ an
algorithm that provides readings close to the actual
temperature. Table 2 summarizes the T7460 sensor accuracy
for normal operating temperatures. Throughout the range of
43…104°F (6…40°C), the accuracy is better than ±0.75°F
(±0.42°C).

Table 2. Temperature sensor accuracy

ambient temp.

°F (°C)

60 (15.5) ±0.52 (±0.29) 31543

65 (18.3) ±0.49 (±0.27) 27511

70 (21.1) ±0.48 (±0.27) 24047

80 (26.7) ±0.49 (±0.27) 18490

85 (29.5) ±0.52 (±0.29) 16264

± 5 K (relative)

max. error

°F (°C)

LED

(override)

button and

3 5

2

) connects to a

nom. resistance

(Ω)

3- or 5-

position

fan switch

W7750A,B, W7751B,D,F,H, W7752D,E,F,G, W7753A, W7761A,
W7762A,B, W7763C,D,E, and
Excel 600, 500, 100, 50, 20

W7750A,B, W7751B,D,F,H, W7752D,E,F,G, W7753A, W7762B,
W7763E, and
Excel 600, 500, 100, 50, 20

W7750A,B, W7751B,D,F,H, W7752D,E,F,G, W7753A,
W7762A,B, W7763D,E, and
Excel 600, 500, 100, 50, 20

W7752D,E,F,G, W7753A, and
Excel 600, 500, 100, 50, 20

W7750A,B, W7752D,E,F,G, W7753A, and Excel 600, 500, 100,
50, 20

W7752D,E,F,G, W7753A, and
Excel 600, 500, 100, 50, 20

80 K

70 K

)

60 K

50 K

ance (

40 K

30 K

ical

20 K

elec

10 K

30

0 10 20 30 40

Fig. 1. Temperature vs. resistance for 20kΩ sensor

T7460B,C,D,E,F Setpoint Adjustment:

In the case of wall modules equipped with setpoint adjust­ment, depending on the type of setpoint dial in use, the con­troller must be set for either the relative or the absolute scale.
The relation between setpoint and resistance is given in Table

3. Accuracy of resistance is:

• ±5% in middle position, e.g. 5225 Ω to 5775 Ω;

• ±10% in end position, e.g. 9450 Ω to 11550 Ω.

compatible with

40 50 60 70 80 90 100 110

temperature (degrees)

°
°C

74-3083-2 2

T7460A,B,C,D,E,F WALL MODULES

Table 3. Setpoint values versus resistances

relative scale (Kelvin) absolute scale (°C)

setpoint

nominal

resistance (Ω)

setpoint

nominal

resistance (Ω)

-5 9574.0 12 9958.0

-4 8759.2 13 9468.7

-3 7944.4 14 8979.3

-2 7129.6 15 8490.0

-1 6314.8 16 8000.7

0 5500.0 17 7511.3

1 4685.2 18 7022.0

2 3870.4 19 6532.7

3 3055.6 20 6043.3

4 2240.8 21 5554.0

5 1426.0 22 5064.7

23 4575.3

24 4086.0

25 3596.7

26 3107.3

27 2618.0

28 2128.7

29 1639.3

30 1150.0

T7460C,E,F Bypass Button / LED

When Used With Excel 10 Controllers:

The controller provides timed occupied and unoccupied
temperature setpoints for the wall module, see Fig. 2. The
bypass button is used to change the controller into the modes
shown in Table 4 and Fig. 3. The override LED displays the
override status of the controller.

Table 4. Bypass button/LED operation

1b button held

down

controller mode LED status

0…1 sec no override OFF

1…4 sec

timed occupied
override

ON

4…7 sec unoccupied override 1 blink / sec

>7 sec no override OFF

--

continuous occupied
overridea

2 blinks / sec

-- wink from networka 4 blinks / sec

2b controller mode

independent of bypass button

LED status

Effective Occupied / Effective Bypass ON

Effective Standby 1 blink / sec

Effective Unoccupied OFF

Wink from network 4 blinks / sec

a

Remote function. Generated from the network.

b

1=Controller configured for indicating override;
2=Controller configured for indicating occupancy

PRESS

for <1 sec

RESET

NOT ASSIGNED

(LED OFF)

PRESS

for 1...4 sec

BYPASS OCCUPIED

(LED ON)

BYPASS

TIME-OUT

PRESS

for 4...7 sec

PRESS

for <1 sec

UNOCCUPIED

(LED BLINKS)

PRESS

for >7 sec

Fig. 3. Bypass button operation (with Excel 10)

When Used With Excel 600/500/100/50/20 Controllers:

All Excel 600, 500, 100, 50, and 20 Controllers are fully
programmable. The application engineer-programmer can

Fig. 2. LED and bypass button locations on T7460C,E,F

program the override and LED to operate in any manner
desired. The bypass (override) input is a dry-contact,
normally-open, momentary digital input when the wall module
does not have a fan switch. When a fan speed switch
(basically a series of resistances based on fan switch
position) is present, the bypass button is an analog input. See
Table 5 for those resistances.
Every controller includes a software module (XFM) enabling
you to adapt the wall module to the respective controller,
making further configuring unnecessary.
Contact your local Honeywell distributor for further details.

3 74-3083-2

T7460A,B,C,D,E,F WALL MODULES

T7460D,E,F Fan Switch

When Used With Excel 10 FCU Controller:

The T7460D,F have a 5-position fan switch (Auto, 0, 1, 2, 3);
the T7460E has a 3-position fan switch (Auto, 0, 1).

Fan runs automatically at the speed determined
by the controller’s temperature control algorithm.

Fan is continuously off.

Fan is continuously running at speed 1.

Fan is continuously running at speed 2.
(Not available with T7460E).

Fan is continuously running at speed 3.
(Not available with T7460E).

NOTE: The fan speed switch on the wall module overrides

the temperature control algorithm.

When Used With Excel 600/500/100/50/20 Controllers:

All the Excel 600, 500, 100, 50, and 20 Controllers are fully
programmable and can be programmed so that the fan speed
switch and bypass button function the way that the application
engineer/programmer wants. The resistances used for
programming the controller are shown in Table 5.
Every controller includes a software module (XFM) enabling
you to adapt the wall module to the respective controller,
making further configuring unnecessary.
Contact your local Honeywell distributor for further details.

Table 5. Program settings for wall modules with fan

switch

for switch position resistance (Ω)

Auto 1861.4 ±100

0 2686.4 ±100

Mounting Options:

Dimensions (H/W/D):

Environmental Ratings:

Relative Humidity:

5% to 95% non-condensing.

Approvals:

ACCESSORIES

For mounting the following accessories, see
T7460A,B,C,D,E,F Installation Instructions (product literature
no.: EN1B-0291GE51).

T7460-LONJACK

The T7460-LONJACK is a small board and allows easy
access to L
must be already connected, in compliance with the max.
cable lengths set forth by the L
L

ONWORKS network via a LONWORKS bus cable). Via an

additional 3.5 mm jack plug on the board, a PC connection
can be established.

Order quantity: set of 5 pieces

T7460-LIMITER

The T7460-LIMITER can be used to adjust the setpoint dial to
particular setpoints.

Order quantity: set of 100 pieces

See T7460A,B,C,D,E,F Installation Instructions
(product literature no.: EN1B-0291GE51) for jumper
settings.

The T7460 can be mounted on a 60 mm diameter junction
box or directly on a wall.

4-1/8 x 3-15/16 x 1-3/16 in. (104 x 99 x 30 mm).

Operating temperature: 43° to 104°F (6° to 40°C).
Shipping temperature: -40° to 150°F (-40° to 65°C).

CE.

ONWORKS via the wall module (the wall module

ONWORKS Guidelines, to the

1 3866.4 ±100

2 3041.4 ±100

3 4601.4 ±100

bypass button closed 0 to 100

NOTE: An additional 10kΩ (±2%) series resistor can be set

by jumper (jumper setting: A=1; B=3).

Manufactured for and on behalf of the Environmental and Combustion Controls Division of Honeywell Technologies Sàrl, Ecublens, Route du Bois 37, Switzerland by its Authorized Representative:

Automation and Control Solutions

Honeywell GmbH
Böblinger Straβe 17
D-71101 Schönaich
Phone xx49-(0)7031-637-01
Fax xx49-(0)7031-637-493
http://europe.hbc.honeywell.com

74-3083-2 rev. 10-05 Printed in Germany