Siemens TALON TXM1.8U-ML User Manual

TX-I/O Island Bus
 If the 24 Vac field supply (maximum 4 A) is "used up" by the field devices, an
additional TX-I/O Power Supply or a Bus Connection Module is required.
 If a separate fuse or a field supply with a voltage other than 24 Vac is required
(maximum 4 A), a Bus Connection Module is required.
See the
TX-I/O Module Specifications [ 11] for power consumption data.
Example
Consider the following island:
 Two TXM1.6R-M Relay Modules.
 One TXM1.8D Digital Input Module.
 Four TXM1.8U-ML Universal Modules. For each module:
‒ Four points are configured as Voltage Outputs.
‒ Four points are configured as Analog Inputs.
‒ Four actuators, at 10 VA each, are being powered from the 24 Vac terminals on
the modules.
 Two TXM1.8X Super Universal Modules.
‒ Each module has four AO-I points.
‒ Each module has four AI-I points using sensors, which are powered from the 24
Vdc terminals on the modules (25 mA (0.6 W) each).
The power requirements add up as follows:
Module Power Requirement TX-I/O Power Supply
Remaining Power
Module DC AC DC (28.8 W) AC (96 VA)
TXM1.6R 1.7 W - 27.1 W 96 VA
TXM1.6R 1.7 W - 25.4 W 96 VA
TXM1.8D 1.1 W - 24.3 W 96 VA
TXM1.8U-ML 1.8 W 4 actuators × 10 VA 22.5 W 56 VA
TXM1.8U-ML 1.8 W 4 actuators × 10 VA 20.7 W 16 VA
Add a Bus
Connection Module
Provides 96 VA on
the male bus
connection
20.7 W 96 VA
TXM1.8U-ML 1.8 W 4 actuators × 10 VA 18.9 W 56 VA
TXM1.8U-ML 1.8 W 4 actuators × 10 VA 17.1 W 16 VA
2.2 W - 14.9 W 16 VATXM1.8X
4 sensors × 0.6 W -- 12.5 W 16 VA
2.2 W - 10.3 W 16 VATXM1.8X
4 sensors × 0.6 W -- 7.9 W 16 VA
Total Requirement 20.9 W 160 VA
 The DC power requirement of 20.9 W is within the capability of a single TX-I/O
Power Supply module (28.8 W).
36
Siemens Industry, Inc. TALON TX-I/O Modules and Island Bus Technical Reference
588-587 CONFIDENTIAL: For internal use only 4/6/2010

Siemens TALON TXM1.8U-ML Specifications

General

Brand	Siemens
Model	TALON TXM1.8U-ML
Category	I/O Systems
Language	English