3471
CAMAC 24-Bit Isolated Input Gate Module

The 3471 is a single-width CAMAC module providing 24 individually isolated contact sense circuits.

The sense circuit detects the presence or absence of voltage at its terminals and is suitable for sensing such remote process contact closures as limit switches, machine tool relay contacts, pressure switches, manual switches, and mercury-wetted contacts.

Four voltage options are available: 12 VDC, 24 VDC, 48 VDC, and 120 VAC.

CAMAC 24-Bit Isolated Input Gate Module: 3471

3471 Data Sheet

Supporting Chassis

US Prices Start at: $(Consult)

Request Quote

Input isolation is achieved by using LED/phototransistor optical isolators. Each circuit is a floating two-wire circuit with common-mode voltage isolation greater than 500 volts. Each option has 24 circuits with identical input voltage ratings, and the switching threshold is approximately one half the rated input voltage. Each input circuit draws more than five but less than ten milliamperes.

The logic convention is such that a contact closure (input voltage present) is interpreted as a logical "1".

Each input is conditioned by filtering after the optical isolator. The filter time constant is 100 milliseconds. Other time constant options are available by special order.

CAMAC Module Features

  • 24 Individually Isolated Contact Sense Circuits
  • 24-Bit Voltage Sense
  • Optical Isolation
  • 120 VAC Input
  • 12, 24, and 48 VDC Input Options
  • 100 Millisecond Filter

CAMAC Module Ordering Information

3471 Products and Part Numbers
Isolated Input Gate, 120 Vac, 24-Bits,
50S Amphenol Ribbon Connector
3471-A1A
Isolated Input Gate, 48 Vdc, 24-Bits,
50S Amphenol Ribbon Connector
3471-A1B
Isolated Input Gate, 24 Vdc, 24-Bits,
50S Amphenol Ribbon Connector
3471-A1C
Isolated Input Gate, 12 Vdc, 24-Bits,
50S Amphenol Ribbon Connector
3471-A1D
Isolated Input Gate, Contact Input, 24-Bits,
50S Amphenol Ribbon Connector
3471-A1E