Introduction to the TBX DMS 1625 module

General

The TBX DMS 1625 is a modular base unit comprising 8 24 V DC inputs, compatible with 8 and 3 wire proximity sensors and 2 50 VA relay outputs. The module is equipped with a terminal block for direct wiring of the sensors and preactuators, which can be removed when it is switched off.

The sensor voltage is monitored to ensure that there is sufficient voltage for the inputs to operate correctly.

The inputs of this module have functions which, in certain cases, are common to a group of channels. Thus, it is possible to assign the 2 channel groups of the module to the various tasks in the application.

Technical specifications

The following table provides the technical specifications of the module.

TBX DMS 1625 (1)
Nominal voltage		24 V DC
Supply voltage +SV		19,2 V DC to 30 V DC
Current drawn on +SV of the base module (at 24 V)	if basic unit	80 mA typically
Current drawn on +SV of the base module (at 24 V)	if extension base unit	70 mA typically
Current drawn at +SV by extension module (at 24 V)		10 mA typically
Current drawn at +IS (at 24 V) (loading = 60 %)		75 mA typically
Power dissipated at nominal load in the module (loading = 60 %)		3,7 W at 24 V
Dielectric strength between inputs and ground (GND)		1500 V rms - 50/60 Hz for 1 min
Isolation resistance		> 10 MΩ below 500 V DC

Key:
SV	Power supply to module (communication module if present and input/output interfaces).
IS	Power supply to sensors.
(1)	For a configuration comprising 2 TBX DMS 1625 base units, the maximum ambient temperature is 40 °C, if the 2 base units are used at 100 % (16 ON relays).