Toshiba Carrier BMS-SM1280HTLUL Service Manual page 19

7-2. Digital Input / Output Relay Interface (BMS-IFDD03UL)
Connect power cables, earth wires, and communication cables to the specified terminals on the terminal block.
Secure each cable with a
cable clamp.
Remove the grommet from the power
supply wire hole. Attach the conduit
pipe to the plate with a lock nut.
Use 1/2 inch conduit pipe.
Lock nut
Conduit pipe
Power supply wire
hole (Ø7/8" (22.2))
Connect the earth
wire to the earth
terminal on the
chassis.
To connect 2 cables, change the
preset cable clamp to the
provided one and fix the cables
with the cable clamp as shown in
the figure.
Smart Manager
Digital input
contacts
Digital
output
load
Power supply
120 VAC, 60 Hz
Length of stripped
power cable
1.38"
(35)
2.17"
(55)
Insert the wire by pushing
the lever with a
screwdriver. Check that the
wire is inserted securely.
12V
GND
DO1
DO2
DO3
DO4
Length of stripped
communication cable
1.38"
0.39" (10)
(35)
0.24" (6)
0.39" (10)
When inserting two RS-485
communication cables into a single
terminal for connection to another
interface, crimp them using the
attached pin terminal.
19
LED4 LED2
SW7
LED5 LED3 LED1
SW3 SW2 SW1
1 2 3 4
SW6 SW4
LED9 LED7
LED8 LED6
Length of stripped digital
Input / Output connector wire
1.38"
(35) 0.24" (6)