Johnson Controls RIBMNLB, RIBLB Data Sheet

RELAYS

FAN SAFETY ALARM CIRCUITS

RIBMNLB

2.75˝ Track Mount AHU Fan Safety Alarm Circuit,

24 Vac Power Input

4A

Max.

1 2

24 Vac/dc

For Indoor Use

in Dry Locations

2mA @ 24

Vac/dc 2mA @ 24Vac/dc 2mA @ 24Vac/dc 2mA @ 24Vac/dc 3A @ 24Vac /dc 750mA @ 24Vac/dc

Power

On

Latched

Input

Selector

DIP

Switch

Latch
Reset

J1 Jumper

3 4

Low Limit

1 5

Low
Limit
On

Low Limit

Relay

Low Limit

Digital In

10 11

8A @ 24

Static Pressure

Vac/dc

Detector/FA

Limit

Static
Pressure
On

Static

Pressure

Relay

Static Pressure

Digital In

12 13

8A @ 24Vac/dc 8A @ 24Vac/dc

Dry Contact Outputs (To Controller)

RIBLB

Enclosed AHU Fan Safety Alarm Circuit,

24 Vac Power Input

Smoke

1 7

Fan Status

On

1 6

Smoke

Detector/FA

SPECIFICATIONS

Expected Relay Life:

Operating Temperature:

Humidity Range:

Operate Time:

Power Input:

Alarm Status:

Dimensions:

Track Mount:

Approvals:

Housing Rating:

Gold Flash:

Override Switch:

Notes:

• RIBMNLB and RIBLB have four Alarm Inputs and one

Master Alarm.

A master relay will open if any one of the normally-closed
(N/C) inputs open. LED status of all outputs and the master
relay is provided. The RIBMNLB is provided with mounting
track for mounting in user-provided electrical enclosures. The
RIBLB is enclosed in a NEMA 1, 4˝ x 7˝ enclosure with a clear lid
to allow viewing of the status LEDs. The master relay has two
general-purpose outputs: one 24 V output terminal and one
dry contact output rated up to 10 Amp @ 277 Vac. Fan status
contact controls actuator power. The most common applica­tion is an Air Handling Unit (AHU) fan-safety-shutdown where
the master relay is used to shutdown the fan. Contact closure
outputs are provided so that a DDC controller can determine
the cause of a shutdown.

Model RIBMNLB combines all the relay logic to facilitate
fan status, fan safety control, and damper actuator control.
It is intended for use in a circuit that will control fan
start/stop and fan safety shut-down circuit monitors three
critical inputs:

• Low-limit freeze protection (to stop fan and remove
power from damper actuator)

• Static pressure (to monitor for hi/low pressure condition)

• Smoke detector / re alarm

Master relay opens to shut down AHU when any
Normally Closed input opens.

Integral DIP switch allows any input to be latched. Input can
be reset with push button or by cycling unit power.

Installing J1 jumper allows Fan Status input to control Master
Relay, like the other 3 inputs.

10 million cycles minimum mechanical

-30 to 140° F
5 to 95% (noncondensing)
250ms
4 Amp @ 24 Vac/dc ; 50-60 Hz
LED On = Activated

6.000˝ x 2.750˝ x 1.200˝ (RIBMNLB)

4.28˝ x 7.00˝ x 2.00˝
with .75˝ NPT Nipple (RIBLB)
MT212-6 Mounting Track Provided UL
Listed, UL864, C-UL
UL Listed, NEMA 1, C-UL, CE Approved
No
No

Fan

Status

On

Smoke

Detector/

FA Relay

Smoke Detector/

FA Digital In

14 15

Powered Contact OutputsDry Contact Inputs (From Field)Power Input

1 8

24V COM

Actuator Power

Status
Relay

Digital inputs to controller

Smoke / Fire Alarm DI

Fan Safety

Fan

Master

Relay

Fan Status

Digital In

16 17

8A @ 24Vac/dc

R4 FS-S

16

Fan Status DI

17

R1 LL-A

10

Low Limit DI

11

R2 SP-A

12

Static Press Alarm DI

13

R3 Smoke/Fire Alarm

14

15

RIBMNLB
(Track Mount)

RIBLB
(Enclosed)

1 9

24V COM

Dry Contact
Output

10A @ 277 Vac
10A @ 30 Vdc
1/2 HP@120/240Vac
B300 Pilot Duty

Master

Relay On

CAN BE USED TO

ISOLATE FIELD DEVICES

FROM EACH OTHER AND

FROM CONTROLLER,

NOT ONLY FAN CIRCUITS

Panel Field

5Amp

DC-1 Power

24Vac COM

DL-1

PB-1

R1 LL-A

RC-1

TX-1

24Vac

DC-1
DO-3

R1 LL-A R2 SP-A R3 SMK/FA

R1 LL-A

Black

Black

1 2

24Vac 24Vac

At power-up, delay
2 sec before DL-1
becomes activated

R2 SP-A

R3 SMK/FA

R4 FS-S

R4 FS-S

DL-1

White

White

Green

Made in USA

Meets

“Buy American”

of ARRA 2009

CODE VER. 1.0

120Vac

H
N

Emergency Power

G

with ground

Starter

Contactor

To Motor

Status

FS-S

Fan Status

X2X1

Ols

120Vac

O

Blu

Yel

Org
Gry

Prp

Brn

Low
Limit

Static
Pressure

Smoke
Detector /
Fire Alarm

H A

T

n

RIBX Series

1 x 21 x 1

RIBTU2C

Wht/Blu

Wht/Yel
Gry/Wht

Wht/Prp

1

9

3

4

1

5

1

6

1

7

1

8

Fan Safety Relay

Actuator Power

This drawing represents:

• Only Low Limit Latch Set

• J1 Jumper Not Installed

071417