Introduction to the TBX DSS 1235 module

General

The TBX DSS 1235 is a modular base unit comprising 12 100 VA relay outputs. The module is equipped with a terminal block for direct wiring of the preactuators, which can be removed when it is switched off.

The outputs 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.

Relays available on the TBX DSS 1235 module are:

4 groups of 2 normally open (NO). The common for the contact of the two relays is connected to one terminal on the terminal block,
4 change-over (NO and NC) relays.

Technical specifications

The following table provides the technical specifications of the module.

TBX DSS 1235
Nominal voltage +SV		24 V DC	48 V DC
Supply voltage +SV		19,2 V DC to 30 V DC
Current drawn at +SV by the basic module (with 60 % of the relays active)	if basic unit	130 mA typically	70 mA typically
	if extension base unit	negligible	negligible
Current drawn at +SV by the extension module (with 60 % of the relays active)		125 mA typically	65 mA typically
Immunity to +SV microbreaks (with 60 % of the relays active)		10 ms
Power dissipated at nominal load in the module (with 60 % of the relays active)		3,1 W at 24 V	3,3 W at 48 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 interfaces).