Functional Devices RIBMNLB-2NO : AHU Fan Safety Alarm and General Purpose Logic Circuit, 24 Vac/dc Power Input, 2 Alarm Inputs all with N/O Outputs, 2.75" Track Mount
Specifications
Expected Relay Life: 10 million cycles minimum mechanical
Operating Temperature: -30 to 140° F
Humidity Range: 5 to 95% (noncondensing)
Operate Time: 8ms
Power Input: 4 Amp max. @ 24 Vac/dc ; 50-60 Hz
Alarm Status: LED On = Activated
Dimensions: 3.000" x 2.750" x 1.750" (RIBMNLB-2NO)
Track Mount:
MT212-6 Mounting Track Provided (RIBMNLB-6NO)
MT212-4 Mounting Track Provided
(RIBMNLB-4NO, RIBMNLB-2NO)
Approvals: UL Listed, UL916, UL864, C-UL, CE, RoHS, CSFM
Gold Flash: No
Override Switch: No
Model RIBMNLB-2NO is a simple device that combine a common relay-logic function into a small, easy-to-install, and less expensive form.
A master relay will open if any one of the normally-closed (N/C) inputs open. There are six, four, or two inputs depending on the model chosen. LED status of all inputs, the master relay, and power input is provided. Bypass of un-used inputs is also provided. The RIBMNLB series is provided with mounting track for mounting in user-provided electrical enclosures.
The master relay has two general-purpose outputs: both can
be jumper selected at 24 V (sourced from input) or dry contact. 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.
RIBMNLB-2NO has two Alarm Inputs and one Master Alarm.
Data Sheets
- Mounting:
- Track Mount
- Number of Relays:
- 3
