FOXBORO FBM42 High Power Contact/dc Expansion Input Output Interface Module

FOXBORO FBM42 High Power Contact/dc Expansion Input Output Interface Module

DESCRIPTION

The High Power Contact/dc Input/Output Interface Module (an expandable main module) and its counterpart High Power Contact/dc Expansion Input/Output Interface Module individually provide high current capability on output channels and isolation on a per channel basis. Each module provides the following input and output functions for digital field signals.

INPUT FUNCTIONS - 8 channels used collectively for either:

• contact sensing only, or 

• dc voltage monitoring only.

OUTPUT FUNCTIONS - 8 channels used for: 

• dc output switching with an external source only at high current ratings (e.g., to control powering of various external loads)

Automatic Restart from Overload 

If an overload is sensed (either inrush or steady state current exceeded), the module will open for 64.5 line cycles and then retry again. This operation will continue indefinitely for outputs only. Overloads exceeding 50 A will cause damage to the module.

FUNCTIONAL SPECIFICATIONS

INDICATORS (MOUNTED ON TERMINATION ASSEMBLY)

Operational Status 2 light-emitting diodes (LED’s) 1 red and 1 green)

Input Channel Status 8 LED’s (1 per channel)

Output Channel Status 8 LED’s (1 per channel)

Plug Connector Block 34-pin connector. Mates with:

– Burndy MSD 34 PM 118 (plug with bar-type cable clamp) 

– Burndy MSD 34 PM 124 (plug with clam shell hood) 

– Burndy MSD 34 PM 824 (plug with suitcase hood) 

– or equivalent

Applied Voltage 60 V dc (maximum)

Steady State 2.25 A dc (maximum) per channel, 12 A dc

Shorted-Load Duration Indefinite (switch shuts off for 1 sec. nominal on overload)

ON-State Voltage Drop 0.4 V at 1A

OFF-State Leakage Current 0.5 mA (maximum)

Range (each channel) Contact open (off) or closed (on)

Open-Circuit Voltage 24 V dc ±20%

Short-Circuit Current 5 mA (maximum)

ON-State Resistance 1 k Ω (maximum)
OFF-State Resistance 100 k Ω (minimum)

OFF-State Voltage 0 to 5 V dc

ON-State Current 2 to 6 mA

OFF-STATE 100 k Ω (minimum) at 60 V dc

TEMPERATURE 0 to 60°C (32 to 140°F)

ALTITUDE -300 to +3,000 m (-1,000 to +10,000 ft)

RELATIVE HUMIDITY 5 to 95% (Noncondensing)

TEMPERATURE -40 to +70°C (-40 to +158°F)