Function

This isolated barrier is used for intrinsic safety applications.

The device transfers digital signals (NAMUR sensors or dry contacts) from a hazardous area to a safe area.

The input controls two passive transistor outputs.

Via switches the mode of operation can be reversed and the line fault detection can be switched off.

Via switch the function of the second output can be defined as a signal output or an error output.

A fault is signalized by LEDs acc. to NAMUR NE44 and a separate collective error message output.

General specifications

Signal type Digital Input

Functional safety related parameters

Safety Integrity Level (SIL) SIL 2

Systematic capability (SC) SC 3

Supply

Connection Power Rail or terminals 9+, 10-

Rated voltage Ur 19 ... 30 V DC

Ripple ≤ 10 %

Rated current Ir 20 ... 15 mA

Power dissipation ≤ 700 mW including maximum power dissipation in the output