Honeywell EXCEL 10 Installation Instructions Manual page 6

EXCEL 10 W7754K,P,Q,R,S,T,V FCU CONTROLLERS − INSTALLATION INSTRUCTIONS
Depending upon the chosen network configuration, one or two
terminations (see section "L
8) may be required.
Inputs/Outputs
Wiring the Inputs/Outputs
Use a min. size of 20 AWG (0.5 mm
2
(2.5 mm ) for all input/output connections. The max. length of
all input/output cables is 400 m.
Two wires with a total thickness of 14 AWG can be twisted
together and connected using a wire nut (include a pigtail with
this wire group and attach the pigtail to the individual terminal
block). Deviations from this rule can result in improper
electrical contact. Local wiring codes may take precedence
over this recommendation.
Binary Inputs
The unit's binary inputs are suitable for connection with dry
contacts, only.
Relay Outputs
The relay outputs can be configured (via the LNS plug-in) for
a variety of different functions. Once the relay outputs have
been configured, the corresponding devices can then be con-
nected to them directly.
Hardware Limits

Min. current of 50 mA required to ensure reliable contact.

The normally-open contacts are designed for a max.
continuous current of 3 A (for relays 1, 2, and 3 together)
and 10 A (relay 4), respectively.
NOTE: If inductive components are to be connected to the
relays and if these relays switch more often than
once every two minutes, these components must be
prevented from causing harmful interference to radio
or television reception (conformance with EN 45014).
Triac Outputs
The triac outputs can be configured (via the LNS plug-in) for a
variety of different functions, e.g., for connection to either a
floating drive or to a thermal actuator (see Table 4 to Table 6).
Once the triac outputs have been configured, the cor-
responding devices can then be connected to them directly.
NOTE: VC6983 generates high-voltage pulses in the end
position and therefore cannot be used in conjunction
with the W7754.
EN1B-0304GE51 R0916M
W Termination" on page
ON ORKS
2
) and a max. of 14 AWG
Hardware Limits for W7754K,P,R,S,T,V (230 Vac Power Supply)

Low signal: 0 V; high signal: 230 Vac

Max. allowable continuous current for each individual triac
output: 500 mA

Max. allowable peak current (for 10 seconds) for each
individual triac output: 1 A

Max. allowable continuous current for all of the triac
outputs together: 1 A.
 cos  > 0.8
Hardware Limits for W7754Q1008 (24 Vac Power Supply)

Low signal: 0 V; high signal: 24 Vac

Max. allowable continuous current for each individual triac
output: 500 mA

Max. allowable peak current (for 10 seconds) for each
individual triac output: 1 A

Max. allowable continuous current for all of the triac
outputs together: 1 A.
 cos  > 0.8
Table 4. W7754K Output assignments
solid state
output
stage
type
0
1-stage
1
PWM -- enabled for heating
thermal -- enabled for heating
Table 5. W7754P,Q,R,T, Output assignments
OUT1
output
stage
type
19
floating -- close open close open
0 --
1-stage
1 --
0 OFF
2-stage 1 OFF
2 ON
0 OFF
1 OFF
3-stage
2 ON
3 ON
PWM -- -- PWM
thermal -- --
6
OUT2
plug terminal 22
-- OFF
-- ON
PWM
ON / OFF
AO
(W7754R,T,
OUT2
only)
20 21 22
OFF -- OFF
ON -- ON
OFF OFF OFF
ON OFF ON
ON ON ON
OFF OFF OFF
ON OFF ON
OFF ON OFF
ON ON ON
If OUT1 is con-
figured for "PWM"
and fan is not
-- PWM
configured for
"variable-speed
fan", AO runs in
parallel to OUT1
ON / ON /
--
OFF OFF
12
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