BENTLY 3500/33-01-01 16 channel relay control module

Description

The 3500 system relay modules consume the alarm and status information broadcast onto the

system alarming networks and constantly 3500/33-01-01 compares these messages against the configured

relay drive logic, to provide machinery protection trip output capability.

A 3500 relay module is a multi-channel module composed of a main card known as the relay

controller and a relay output module. 3500/33-01-01 The relay controllerinterfaces with the 3500 system

alarming network to process its configured relay drive logic and generate relay channel drive

signals. The relay I/O module accepts the relay drive signals from the controller and contains the

relay devices which provide the machinery trip contacts.

3500/33-01-01 Each channel provides independent “Alarm Drive Logic” functionality which allows the userto

develop complex logic strings using Boolean (AND and OR) logic elements. The logic acts on the

alarm states (alert, danger) and validity states (Not OK) generated by monitors in the system

which are available from the system alarming networks. Each channel’s logic string drives its own

relay output which is intended to be used as a machinery trip output.

3500/33-01-01 The module’s fundamental safety function is the relay output contact state change.

The module is configured using the 3500 Rack Configuration Software. All software configuration

options and logic parameters available, are valid for use supporting the safety function without

restriction. These parameters can be selected and arranged to suit the specific application

requirements.

The Relay I/O contains three output contacts: Armature (ARM), Normally Open (NO), and Normally

Closed (NC), which referto the state of the contacts when the relay coils are de-energized. Also,

each channel is independently configurable forNormally Energized (NE) orNormally De

energized (NDE) by means of DIP switches located on the back of the I/O module. The NE/NDE

state refers to the state of the relay drive coil under normal (non-emergency) conditions.

2.4.1 3500/32M_SIL 4-Channel Relay Module

The 3500/32M_SIL is a four channel variant of the relay module which can be applied in either a

one-out-of-one (1oo1), or a one-out-of-two (1oo2) architecture. A single path approach can be

used to achieve a SIL 1 capable 1oo1 solution, while a dual path (redundant) approach can be

used to achieve a SIL 2 capable, 1oo2 solution. Section 4.2 outlines the specific details that must

be adhered to in orderto correctly apply the relay module to achieve the two different SIL

capable solutions.

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