Cut Sheet

RELAYS
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Blu
N/C
Yel
Comm
Org
N/O
Wht/Yel
Neutral
Wht/Blk
120 Vac
0
1 2 3 4 5 6 7 8 9 10 11 12
MSB
LSB
Baud
Rate
MS/TP ADDRESS
1
24 Vac/dc
Common
}
}
MSTP
REF
A(–)
B(+)
Relay
Override
Connect Jumper for EOL.
Disconnect for no
terminating resistor.
Dry Contact
Binary Input
DIP SWITCHES* BAUD R ATE
8 9 10
0 0 0
9600
0 0 1
19200
0 1 0
38400
0 1 1
57600
1 0 0
76800
1 0 1
115200
All other combinations=9600 baud
DIP SWITCHES* RELAY STATE**
11 12
1 0
Auto
X 1
Override on
0 0
Override o
* 0 = Open ; 1 = Closed
• Dry contact binary input is a general purpose input that is not tied to the relay
internally. Can be used with any dry contact switching device, such as a current sen-
sor, to report back to the network.
Network Media:
Terminations:
Polarity:
Baud Rate:
Twisted Pair 22-24AWG, shielded
recommended
Functional Devices product installed at
both ends of the MS/TP network – Use
120 Ω end of line resistors. All other
cases – Follow instructions from the
device installed at the end of the
MS/TP network.
Network is polarity sensitive
9600, 19200, 38400, 57600, 76800,
115200 (DIP Switch Selectable)
BACnet® Details:
• MS/TP Address & Baud Rate must be set
prior to power up via DIP switches.
• Device ID will default to 277XXX where
XXX is the MS/TP Address.
Examples:
• Device ID can be changed via network
command. Once changed, it will no longer
default to 277XXX. (MS/TP Address &
Device ID must be unique.)
• This model utilizes: BO 1 (Relay output),
BI 1: (Dry contact binary input)
• Software objects also included but not
utilized: BI 2 (Binary input), AI 1 (Analog
input)
• Device Instance changed via Object
Identier Property of Device Object
• Each unit is 1/8 unit load if date code 041510
or later. (One full load prior to 041510)
• PIC Statement available on website.
http://www.functionaldevices.com/pdf/
datasheets/pics/BACnetRIB_PICS_V105.pdf
Or scan QR code with your smart phone.
# Relays & Contact Type:
Expected Relay Life:
Operating Temperature:
Humidity Range:
Operate Time:
Green LED:
Red LED:
Dimensions:
Wires:
Approvals:
Housing Rating:
Gold Flash:
Relay Override Switch:
One (1) SPDT Continuous Duty Coil
10 million cycles minimum mechanical
-30 to 140° F
5 to 95% (noncondensing)
18ms
Network Communication
Relay Status
4.00˝ x 4.00˝ x 1.80˝ with .50˝ NPT Nipple
16˝, 600V Rated
CE, UL Listed, UL916, C-UL, RoHS
UL Accepted for Use in Plenum, NEMA 1
No
DIP Switch Control
Contact Ratings:
20 Amp Resistive @ 277 Vac
20 Amp Ballast @ 277 Vac
16 Amp Electronic Ballast @ 277 Vac (N/O)
10 Amp Tungsten @ 120 Vac (N/O)
1110 VA Pilot Duty @ 277 Vac
770 VA Pilot Duty @ 120 Vac
2 HP @ 277 Vac
1 HP @ 120 Vac
Power Input Ratings:
81 mA @ 24 Vdc
111 mA @ 24 Vac
96 mA @ 120 Vac (RIBTW2401B-BC)
121 mA @ 208-277 Vac (RIBTW2402B-BC)
Power Input:
24 Vac/dc ; 120 Vac ; 50/60 Hz (RIBTW2401B-BC)
24 Vac/dc ; 208-277 Vac ; 50/60 Hz (RIBTW2402B-BC)
RIBTW2401B-BC
Enclosed BACnet® MS/TP Network Relay Device;
One Binary Output (20 Amp Relay SPDT + Over-
ride); One Binary Input (Dry Contact, Class 2);
24 Vac/dc or 120 Vac Power Input, Optional End
of Line Resistor (EOL) Included.
Blu
N/C
Yel
Comm
Org
N/O
Wht/Yel
Neutral
Wht/Brn
208-277 Vac
0
1 2 3 4 5 6 7 8 9 10 11 12
MSB
LSB
Baud
Rate
MS/TP ADDRESS
1
24 Vac/dc
Common
Dry Contact
Binary Input
}
}
MSTP
REF
A(–)
B(+)
Relay
Override
Connect Jumper for EOL.
Disconnect for no
terminating resistor.
RIBTW2402B-BC
Enclosed BACnet® MS/TP Network Relay Device;
One Binary Output (20 Amp Relay SPDT + Over-
ride); One Binary Input (Dry Contact, Class 2);
24 Vac/dc or 208-277 Vac Power Input, Optional
End of Line Resistor (EOL) Included.
MS/TP Address - 004
Device ID - 277004
MS/TP Address - 121
Device ID - 277121
** Device must be powered for override
SPECIFICATIONS
NETWORK COMPATIBLE RELAYS
Made in USA
Meets
“Buy American”
of ARRA 2009
Notes:
• When connecting 24 Vac to both the RIB(s) and a
half-wave device, damage to device can occur.
Option 1: Use separate transformers for each device.
Option 2: Add diode between devices, see Option 2
note below. ^^
Half-Wave Device
Com
24 Vac/dc
Com
24 Vac
24 Vac
IN4004
RIBTW2401B-BC or RIBTW2402B-BC
Add diode on 24 Vac power (Com) interconnection
between devices. Band on diode faces towards RIB(s).
^^ Option 2: