Honeywell EXCEL 10

EXCEL 10 W7754K,P,Q,R,S,T,V FCU CONTROLLERS − INSTALLATION INSTRUCTIONS
EN1B-0304GE51 R0916M
8
10.0 V
AO (0...100% = 0...10 V),
no feedback on LonWorks network
no heat, no cool
OUTPUT 2
6.0 V
2.0 V
0.0 V
100%
0%
nvoCoolOutput nvoHeatOutput
nvoFCUStatus.output_position[0]
100%
100%
0% 0%
4.7 V
7.3 V
Fig. 8. Operational sequence with Belimo 6-way valve
connected to the analog output (2….10 V)
Replacing the Fuse
NOTE: Before replacing the fuse (see also Fig. 1 on page
1), disconnect the controller from the power source
by detaching the removable terminal plug attached to
terminals 25 and 26.
CAUTION
Depending upon actual wiring, even after you have
switched OFF the power supply, the relays may still be
under high voltage.
When replacing the controller's fuse, please replace with the
same type listed on the terminal assignment label (e.g.:
F2.5H250V).
Troubleshooting
All units feature a LONWORKS service LED and corresponding
L
ONWORKS service button (see Fig. 1) for commissioning and
troubleshooting.
When the service button is pressed, the service pin message
is broadcast.
See Table 10 on page 9 for a description of the meaning of
the various different possible behaviors of the L
ONWORKS
service LED. For more information on standard service LED
behavior, refer to Motorola L
ONWORKS Technology Device
Data Manual, page AL-190.
Possible Problems and Recommended Actions
Check if the LONWORKS service LED's behavior is changed if
you switch the power OFF/ON. Please contact Honeywell if
this does not solve the problem.
Accessories
Terminal Protection Cover
Required for wall mounting. Set of eight covers.
 order no.: XAL_COV_L
LONWORKS Termination
One or two LONWORKS terminations are required, depending
on the given LonWorks bus layout. See section "Connecting
to the L
ONWORKS Network" on page 5.
The following L
ONWORKS termination module is available:
 XAL-Term2 L
ONWORKS Connection and Termination
Module, which can be mounted on DIN rails and in fuse
boxes
LONWORKS TERMINATION
PLUG-IN JUMPER
FTT/LPT
FREE TOPOLOGY:
52.3 OHM
100 μ
100 μ
52.3 Ohm
1
2
FTT/LPT
BUS TOPOLOGY:
105 OHM
100 μ
100 μ
105 Ohm
1
2
1
5
2
3
4
6
3
1
5
6
2
4
REMOVABLE SCREW-TYPE
2-POLE TERMINAL BLOCK
FTT/LPT BUS FTT/LPT FREE
PARK POSITION
(NO TERMINATION)
Fig. 9. L
ONWORKS connection and termination module