Configurable Safety Relays (300 Series)

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MSR320P

Introduction Specifications Product Selection Accessories Approximate Dimensions—mm (inches) Typical Wiring Diagrams
Click to enlarge - MSR320 input module angled


Description

The MSR320P is an input expansion module for the modular MSR300 family of monitoring safety relays. Up to ten input modules can be connected to a base unit by simply removing the terminator, included with each base unit, and connecting the ribbon cables of the neighboring module. The connecting ribbon cable provides power to the MSR320P as well as a check on its status. The terminator removed from the base module must be inserted into the input module furthest to the left.

Although the base module of the MSR300 system holds all of the configuration information, the input modules are the devices that actually configure the base module. The input modules select both the type of inputs connected and the outputs or groups those inputs will control.

The MSR320P has two independent inputs, which are configured by the rotary switches on the side of the module. There are two switches, for redundancy, so both must be set to the same value. An example of the switch settings is to the right. The selection of the switch setting signifies to the base module what inputs to expect and what to test for. Connecting a single device (must be at least dual channel) to each input meets the requirements of Category 4 per EN594-1. Below is a list of supported inputs.

The MSR320P Input module supports up to three group outputs. Two rotary switches, for redundancy, on the side of the module select the output group or groups the connected inputs will control. Below is an example of the possible group settings.

When three channel N.C. inputs are not chosen, functions switch setting three, one solid-state output is available for each input to provide annunciation for that input.

Two LEDs provide the status information on the inputs. Green indicates the input is closed and red indicates the input is open. Three LEDs provide information regarding which output groups are controlled by this input module.

Features


LED Indicators

2x input status Input Closed
Green Input Open; 3x output switch group assignment