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, short-circuit proof
Internal voltage drop                            max. 2 V at 500 mA load
Admissible line resistance (in + out)       max. 11 Ω
Operating point for
short-circuit current                              0.6…1.0 A
Output leakage current                         max. 200 µA
Output voltage if output is reset            max. 1.5 V
Monitored switching time                      max. 200 µs
Space requirement                               4 SU
Operating data                                    5 VDC / 100 mA
48 VDC / 100 mA plus load
(supply via cable plug)