HIMA HIMax®Analog Output Module X-AO 16 01

Product Description

The X-AO 16 01 analog output module is intended for use in the programmable electronic

system (PES) HIMax.

The module can be inserted in any of the base plate slots with the exception of the slots

reserved for system bus modules. For more information, refer to the System Manual

(HI 801 001 E).

The module is equipped with 16 analog outputs with a nominal range of 4...20 mA.

The analog outputs are suitable for connecting ohmic, inductive and capacitive loads and

lamps in accordance with EN 61131-2.

The module has been certified by the TÜV for safety-related applications up to SIL 3

(IEC 61508. IEC 61511 and IEC 62061), Cat. 4 (EN 954-1) and PL e (EN ISO 13849-1).

Refer to the HIMax Safety Manual for more information on the standards used to test and

certify the modules and the HIMax system.

Safety Function

The module ensures its safety function using one extra safety switch for each channel pair

that is opened if a failure occurs.

The safety function is performed in accordance with SIL 3.

Reaction in the Event of a Fault

If the safety-related processor system of the module detects a module fault during

operation, the module adopts the safe state after a maximum of 16 ms and all the outputs

are de-energized in accordance with the 'de-energize to trip principle'. If a channel fault

occurs, both channels of the affected channel group are switched off.

The module activates the Error LED on the front plate.

Scope of Delivery

The module must be installed on a suitable connector board to be able to operate. If a FTA

is used, a system cable is required to connect the connector board to the FTA. Connector

boards, system cables and FTAs are not included within the scope of delivery.

The connector boards are described in Chapter 3.6. the system cables are described in

Chapter 3.7. The FTAs are described in own manuals.

Structure

The module is equipped with 16 analog current outputs (0/4...20 mA) that are pairwise

electrically isolated from the supply voltage and the remaining channel pairs. The analog

current value is set with a D/A converter, measured by two independent, internal measuring

devices and functionally tested.

If two modules are redundantly connected, only 8 odd outputs (AO1. AO3...AO15) are

available. The even outputs (AO2. AO4...AO16) are not used.

The module automatically diagnosis open-circuits (OC) and can be evaluated in the user

program, see Chapter 4.3.

The safety-related 1oo2 processor system for the I/O module controls and monitors the I/O

level. The data and states of the I/O module are made available to the processor modules

via the redundant system bus. The system bus has a redundant structure for reasons of

availability. Redundancy is only ensured if both system bus modules are inserted in the

base plates and configured in SILworX.