The module is automatically tested during operation. The main test routines are: 

– Reading back of the output signals. The operating point of the 0 signal read back is ≤ 6.5 V. Up to this value, the level of the 0 signal may arise in case of a fault, and this will not be detected

 – Switching capability of test signal and cross-talking (walking-bit test).

Outputs 500 mA, k short circuit proof Internal voltage drop max. 2 V at 500 mA load Admissible line resistance (in + out) max. 11 Ohm Undervoltage tripping at ≤ 16 V Operating point for short circuit current 0.75 ... 1.5 A Outp. leakage current max. 350 µA Output voltage if output is reset max. 1,5 V Duration of the test signal max. 200 µs Space requirement 4 TE Operating data 5 V DC: 110 mA 24 V DC: 180 mA in add. load

Planning hints– max. 10 output modules with nominal load may be used in one I/O rack 

– can be paralleled without external diodes 

– for lamp load 4 W to 10 W refer to sketch: