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Terminal Block Assignment And Wiring Example For The W7752 Controller - Honeywell Excel 10 W7752D User Manual

Fan coil unit controllers lns plug-ins
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Terminal Block Assignment and Wiring Example for the W7752 Controller

Table 11 illustrates terminal block assignments and wiring for
an example Excel 10 W7752 FCU Controller installation.
Table 12 lists wiring information for all possible actuator types.
Table 11. W7752 Controller: Overview of terminals and functions (by model)
terminal
#
1
GND serving terminals 2 and 3
a digital input, configurable (using the LNS plug-in) to read input e.g. from a
2
window contact, an occupancy sensor, etc.
a digital output, permanently configured to write output switching the wall module's
3
LED ON/OFF
an analog input, permanently configured to read input from a wall module's
4
temperature setpoint adjustment knob
an analog input, permanently configured to read input on whether the wall
module's 3-speed fan control knob has been set to AUTO, OFF, LOW, MEDIUM,
5
or HIGH and whether the wall module's "occupancy override" button has been
pressed
an analog input, permanently configured to read input from a room temperature
6
sensor
7
GND serving terminals 4, 5, and 6
8
not used
9+10
receiving/sending data on the L
11+12
sending/receiving data on the L
13
a common terminal for terminals 14 and 15
14
a triac output, permanently configured to write output to OUT1, opening it
15
a triac output, permanently configured to write output to OUT1, opening it
16
a common terminal for terminals 17 and 18
17
a triac output, permanently configured to write output to OUT2, opening it
18
a triac output, permanently configured to write output to OUT2, closing it
19
a common terminal for terminals 20, 21, and 22
relay 1, permanently configured to write output to a three-speed fan, setting it to
(1)
20
LOW
relay 2, permanently configured to write output to a three-speed fan, setting it to
(1)
21
MEDIUM
relay 3, permanently configured to write output to a three-speed fan, setting it to
(1)
22
HIGH
23
the "L" terminal of the power supply (230 Vac, 115 Vac, or 100 Vac, respectively)
24
the "N" terminal of the power supply (230 Vac, 115 Vac, or 100 Vac, respectively)
relay 4, permanently configured to write output to a hardwired electrical reheat
25+26
coil, switching it ON/OFF
(1)
If all three relays (terminals 20, 21, and 22) are switched OFF, the three-speed fan will likewise be switched OFF.
Using Honeywell's LNS plug-in, you can configure the controller's triac outputs and relay outputs for a variety of different
functions. E.g. the triac outputs can be configured for connection to either a floating drive or to a thermal actuator. Once the
outputs have been configured, the corresponding devices can be directly connected to them.
Table 12. Output assignments of Excel 10 W7752 FCU Controller for various actuator types
output type
floating
1-stage
2-stage
3-stage
PWM
thermal
function
W
network
ON
ORKS
W
network
ON
ORKS
out 1 terminal
13
14
24 Vac
open
24 Vac
ON/OFF
24 Vac
stage 1
24 Vac
stage 1
stage 3
24 Vac
PWM
24 Vac
ON/OFF
EXCEL 10 FCU CONTROLLER LNS PLUG-INS USER GUIDE
15
16
close
24 Vac
24 Vac
stage 2
24 Vac
stage 2
24 Vac
24 Vac
24 Vac
21
model
D
E
F
G
--
--
--
--
230
230
115
115
100
230
230
115
115
100
--
--
out 2 terminal
17
18
open
close
ON/OFF
stage 1
stage 2
stage 1
stage 2
stage 3
PWM
ON/OFF
EN2B-0285GE51 R0909
J
--
--

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