HIMA X-CI 24 51 HIMax® Counter Module

Product Description

X-CI 24 51 is a NonSIL counter module intended for use in the programmable electronic system

(PES) HIMax.

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

reserved for system bus modules. For more information, see System Manual (HI 801 001 E).

The module is used to count the pulses, to measure the frequency and the rotational speed

and, if defined, to recognize the rotation direction. Two channels are required to use the

recognition of rotation direction function, see Chapter 4.5.4.

Proximity switches in accordance with EN 60947-5-6 (NAMUR) or control circuit devices of

type 3 in accordance with EN 61131-2 can be connected to the counter module. Proximity

switches and control circuit devices may not be operated simultaneously.

It can be operated with safety-related modules and other NonSIL modules within one base

plate. Safety-related and NonSIL modules may not be wired redundantly.

The module is interference-free, in particular, with respect to EMC, electrical safety,

communication to the X-SB and X-CPU modules, as well as the user program.

Module and connector boards are mechanically coded, see Chapter 3.6.1. Coding avoids

installation of improper I/O modules.

Refer to the HIMax Safety Manual (HI 801 003 E) for more information on the standards used to

test and certify the modules and the HIMax system.

Safety Function

The module does not perform any safety-related functions.

The parameters and status for this module must not be used for safety functions.

Reaction in the Event of a Fault

If a fault occurs, 0 is output as rotation speed and the user program retains its last valid process

value for the counter reading.

The module activates the Error LED on the front plate.

Scope of Delivery

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

field termination assembly (FTA) is used, a system cable is required to connect the connector

board to the FTA. Connector boards, sensor selection plug, system cables and FTAs are not

included within the module's scope of delivery.

The various connector boards are described in Chapter 3.6. the system cables in Chapter 3.7.

The FTAs are described in separated manuals.

Structure

The counter module has 24 inputs that can measure frequencies in the range of 0...20 kHz for

control circuit devices Type 3 and in the range of 0...10 kHz for proximity switches. A short-

circuit-proof supply is assigned to each input.

The 24 inputs of the counter module can either be configured for proximity switches or for

control circuit devices. Which configuration should be used is defined by plugging in the sensor

selection plug to the rear side of the connector board in use, see Chapter 4.2.2.

If proximity switches are used, the switching thresholds for open-circuits (OC) and short-circuits

(SC) are preset in accordance with EN 60947-5-6 (NAMUR). Short-circuit (SC) and open-circuit

(OC) monitoring is only allowed if the Proximity Switch setting is used.

The 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.