Bus Termination Resistor; Input/Output Boards; Bus Termination Resistor Wiring - Honeywell DeltaNet R7515A Installation Instructions Manual

Connections Using AK3702R or AK3744 Bus Cable
and Optionally AK3326 T-Tap Cable Assembly
When using the AK3702R or AK3744 Bus Cable, pull the
cable to each MicroCel on the bus, and connect to Jack J9
using AK3326 T-Tap Cable Assembly (Fig. 13) or to Screw
Terminals 15 through 18 (Fig. 14). When using the AK3326 T-
Tap Cable Assembly, refer to the Connections Using AK3711
Bus and AK3326 T-Tap Cable Assembly section.
In the arrangements shown in Figures 13 and 14, 24V ac
from a Class II Power Source must be provided separately to
each MicroCel.
CAUTION
1. Line power must be off before connecting to or
removing wiring from Terminals 19 & 20 or 42 &
43. This step disables both ac power legs
simultaneously.
2. Removing or connecting one ac power leg at a
time will prevent other MicroCels on the C-NAP
bus from communicating or will destroy the
MicroCel if an inadvertent short to the MicroCel
case occurs.
RED
YELLOW
AK3702R
BLACK
OR AK3744
BUS CABLE
BLUE
PLUG
M-CEL
J9
24V AC/
JACK
C-NAP BUS
1 PROVIDE DISCONNECT MEANS AS REQUIRED.
Fig. 13. Installing AK3702R or AK3744 Bus Cable Using
T-Tap Cable and Jack J9 in MicroCel.
DELTANET R7515A/B, RP7515A/B, R7516B MICROCEL
RED
YEL
THESE
CONNECTIONS
ON THE T-TAP
CABLE ASSEMBLY
ARE NOT USED
AK3326 T-TAP CABLE
ASSEMBLY 6 FT (1.8M)
CLASS II
TRANSFORMER
1
19 20
T2 T1
24V AC
(J11)
C5659
AK3702R OR AK3744 BUS CABLE
RED
YELLOW
M-CEL
15 16 17
– + –
CNAP
(J7)
PROVIDE DISCONNECT MEANS AS REQUIRED.
1
2 SEE CAUTION IN TEXT.
Fig. 14. Installing AK3702R or AK3744 Bus Cable Using
Screw Terminals 15 through 18 in MicroCel.

Bus Termination Resistor

Insert a Bus Termination Resistor 14501600-028 on all
C-NAP bus configurations per job drawings.
If the MicroCel is at the end of a main or secondary
trunk, mount the resistor on the terminal strip as shown
in Figure 15.
MICROCEL
CONTROLLER
Fig. 15. Bus Termination Resistor Wiring.

Input/Output Boards

Input/output boards (as well as triac terminals on the main
board) are furnished with screw terminal blocks rated for 18
to 24 AWG, solid or stranded wires.
NOTE: Screw terminals are furnished only for inputs or
outputs actually provided on any specific input or
output board. In Figures 15 and 16, for example,
terminals are not furnished at Locations 33, 34, and
35 for a two-relay output board.
Wire as follows:
Strip 3/16-in. (5-mm) insulation from the conductor.
Connect wire to proper screw terminals.
9
™ CONTROLLERS
1
YELLOW
RED
CLASS II
TRANSFORMER
2
18 19 20
T2 T1
+
24V AC
(J11)
14501600-028
RESISTOR
15 16 17 18
– + – +
CNAP
(J7)
C3962
C3961
95-6083