24 Vac/dc
Common
IN4004
NETWORK COMPATIBLE RELAYS
of ARRA 2009
RIBMNW24B-MBAI
2.75" Track Mount Modbus® RTU Network Relay
Device; One Binary Output (20 Amp Relay SPDT +
Override); Two Binary Inputs (Dry Contact, Class
2); One Analog Input (T2 Thermistor / 0-5 Vdc /
0-10 Vdc); 24 Vac/dc Power Input; Optional End
of Line Resistor (EOL) Included.
10 V5 V
REF
B(+)
Standard RS-485
Modbus® RTU
Protocol.
1
0
Control
Modbus®
ADDRESS
1 2 3 4 5 6 7 8 9 10 11 12
1 2
A(–)
OPEN
AI
Voltage
Select
Switch
EOL termination resistor jumper.
Connect jumper for terminating resistor.
Relay
Baud
Both jumpers installed from factory. Remove
Rate
left jumper from Thermistor-Input-Select
for T2 Thermistor Input, otherwise leave both
on for 5V or 10V Analog In. Connect Analog
LSB
In between AI and AI common. Connect
Thermistor between AI and Thermistor +5V.
RTU
O O Not dened
O On T2 Thermistor
On On Analog In 5V or 10V
MSB
SPECIFICATIONS
# Relays & Contact Type:
Expected Relay Life:
Operating Temperature:
Humidity Range:
Network Communication:
Operate Time:
Relay Status:
Current Sensor Status:
Binary Input Status:
Dimensions:
Track Mount:
Approvals:
Housing Rating:
Gold Flash:
Relay Override Switch:
Network Media:
Terminations:
Polarity:
Baud Rate:
To select AI
^
for Thermistor
T2 input, install
jumper.
AI
AI COM
Therm. +5V
^
Type
Analog
One (1) SPDT Continuous Duty Coil
10 million cycles minimum mechanical
-30 to 140° F
5 to 95% (noncondensing)
18ms
Green LED
Red LED On = Activated
Pink LED On = Activated
Pink LED On = Activated
6.25˝ x 2.75˝ x 1.75˝ (RIBMNW24B-MBAI)
4.28˝ x 7.00˝ x 2.00˝
with .75˝ NPT Nipple (RIBTW24B-MBAI)
MT212-6 Mounting Track Provided, UL
Listed, UL916, C-UL
UL Listed, NEMA 1, C-UL, CE Approved,
UL Accepted for Use in Plenum,
Also available NEMA 4 / 4X
No
DIP Switch Control
Twisted Pair 22-24AWG, shielded
recommended, EIA/TIA-485 (standard RS485)
Functional Devices product installed at both ends
of the standard RS485 Modbus® RTU network
– Use 120 Ω end of line resistors. All other cases –
Follow instructions from the device installed at the
end of the Modbus® network.
Network is polarity sensitive
9600, 19200, 38400, 57600 (DIP Switch Selectable)
RIBTW24B-MBAI
Enclosed Modbus® RTU Network Relay Device;
One Binary Output (20 Amp Relay SPDT + Override); Two Binary Inputs (Dry Contact, Class 2);
One Analog Input (T2 Thermistor / 0-5 Vdc /
0-10 Vdc); 24 Vac/dc Power Input; Optional End
of Line Resistor (EOL) Included.
Analog In
(Close only one)
SW1 Closed
5 V
SW2 Open
SW1 Open
10 V
SW2 Closed
Thermistor T2 input,
use 5 V selection
Pink LED=BI 1 Status
Red LED=Relay Status
Green LED=Network Status
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
BI 1 COM
Pink LED=BI 2 Status
Made in USA
Meets
“Buy American”
BI 1
Relay
BI 2
BI 2 COM
Contacts
RELAYS
}
N/C
N/O
COM
Notes:
• Modbus®Address & Baud Rate must be set prior to
power up via DIP switches.
Order NEMA 4 housing by adding “-N4” to end of model
•
number. (RIBTW24B-MBAI-N4)
•
Order with grey lid by adding “-GY” to end of model
number. (RIBTW24B-MBAI-GY)
Order NEMA 4 housing with grey lid by adding “-N4-GY”
•
to end of model number. (RIBTW24B-MBAI-N4-GY)
• This model utilizes:
Physical coil 1 (Relay output)
Physical binary input 1 (Dry contact binary input)
Physical binary input 2 (Dry contact binary input)
Physical input register AI 1 (Analog input)
• Thermistor Type 2 (T2) Precon 10 K @ 77°F (25°C)
PN ST-R24, Model 24, (or equivalent.) Thermistor not
included. (Range -39 to 187°F)
• For all versions, raw analog default settings are 0 and
1023 (real), respectively.
•
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.^^
Address and Baud Rate Settings on Bulletin B1676
•
available on website.
http://functionaldevices.com/pdf/bulletins/B1676_393208.pdf
Or scan QR code with your smart phone.
DIP SWITCHES* BAUD RAT E
8 9 10
0 0 0
0 0 1
0 1 0
0 1 1
All other combinations=9600 baud
9600
19200
38400
57600
DIP SWITCHES* RELAY STATE**
11 12
1 0
X 1
0 0
0 = Open ; 1 = Closed
*
Auto
Override on
Override o
** Device must be powered for override
• 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 sensor, to feed back to the network.
24 Vac
RIBMNW24B-MBAI or RIBTW24B-MBAI
24 Vac/dc
Com
Half-Wave Device
24 Vac
Com
^^ Option 2:
Add diode on 24 Vac power (Com)
interconnection between devices.
Band on diode faces towards RIB(s).
Modbus® is a registered trademark of Schneider
Electric licensed to the Modbus Organization, Inc.
071417
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