32-Point Discrete Input Module

32-point 115 Vac and 24 Vdc Sink Discrete Input module. A separate connection to L1 is needed when the model 621-1180R module is used in an ungrounded ac control circuit. Input operation is unaffected by this connection. However, for ungrounded ac systems using ground fault detection circuitry, this connection balances the system and prevents erroneous ground fault indications.

The ‘R’ suffix indicates the module can be removed or inserted into an I/O rack while the rack remains powered. Other I/O modules in the rack continue to control the machine or process.

621-1180R Specifications:

POINT INPUTS 32

POINTS PER COMMON 16 (L2)

NOMINAL VOLTAGE 115 Vac

VOLTAGE RANGE 80-140 Vac

CURRENT RANGE 4-15 mA (8 mA at 115 Vac typical)

INPUT SURGE

CURRENT LIMIT500 mA per input

SWITCHING LEVEL

Logic 1 75 Vac

Logic 0 43 Vac

ALLOWABLE

LEAKAGE CURRENT1.5 mA

INPUT DELAY

Off to On 2.4 ms to 3 ms, plus 0 to 0.5 cycles

On to Off 24 ms ?50%

OPERATING CURRENT

+5Vdc _195 mA maximum