Honeywell CLMERL8N User Manual

MERLIN NX Room Controller
Installation &
Commissioning
Instructions
® U.S. Registered Trademark
Copyright © 2020 Honeywell Inc. • All Rights Reserved EN1Z-1035GE51 R0420
GENERAL INFORMATION
Fig. 1. CLMERxxN (without optional covers)
BEFORE INSTALLATION
IMPORTANT
It is recommended that the unit be kept at room
temperature for at least 24 hours before applying
power; this is to allow the evaporation of any
condensation resulting from low shipping / storage
temperatures.
US requirement, only: This device must be installed in
a UL-listed enclosure offering adequate space to
maintain the segregation of line voltage field wiring
and Class 2 field wiring.
CAUTION
To avoid electrical shock or equipment damage, you
must switch OFF the power supply before attaching /
removing connections to/from any terminals.
Table 1. Overview of models
OS no.:
CLMER…
power
supply
AOs UIs BIs relays
(A
triacs
(B
total no.
of I/Os
remarks
large housing
(198 x 110 x 57.5
mm)
RL4N 230 VAC 6 10 0 4 4 24 24-hr data retention
RL6N 24 VAC 6 10 0 4 4 24 24-hr data retention
RL8N 230 VAC 6 6
(C
4
(D
4 4 24
24-hr data retention; supports switch
inputs with 24 V pull-up for connection of
standard light switches; preferred model
for light and blinds control
small housing
(162 x 110 x 57.5
mm)
RS4N 230 VAC 4 4 0 4 2 14 24-hr data retention
RS5N 24 VAC 4 4 0 4 2 14 24-hr data retention
(A
See also section "Relay Outputs" on pg. 22.
(B
See also section "Triac Current Limitations" on pg. 22.
(C
Of this model's six UIs, only two UIs support NTC; this model is thus not suitable for the hardwiring of wall modules requiring
three UIs supporting NTC.
(D
This model's four binary-only inputs are labelled as UI1-UI4.
CPU: 32-bit MK24FN Freescale Kinetis Cortex M4

Honeywell CLMERL8N Specifications

General

Brand	Honeywell
Model	CLMERL8N
Category	Controller
Language	English

Summary

General Information and Pre-Installation Steps

Before Installation Guidelines

Important recommendations and precautions to follow before powering up the unit.

Dimensions and Mounting Options

Terminal Assignment and Connections

Communication Interface Ports

Information on the various communication ports available on the controller.

Power Supply Information and Wiring

General Power Supply Safety and Guidelines

Safety precautions and general information for connecting the controller's power supply.

Electrical Data Specifications

Freely Programmable Applications

Supported Actuators and Sensors

Lists of compatible actuators and sensors for system optimization and control.

Application Function Blocks Overview

Details on Blinds, Light, and other function blocks for implementing control logic.

Manual Control and Command Inputs

Methods for manual blinds positioning and handling application command inputs.

Emergency and Feedback Handling

Managing emergency inputs and interpreting feedback signals from function blocks.

Commissioning Parameters and Control Logic

Light Control Functionality Details

Features and operation of the light function block, including manual control methods.

Application Control Logic and Examples

Command and Sensor Logic for Lighting

Using application commands, manual inputs, and sensors for lighting control logic.

Commissioning Procedures

Automatic MAC Addressing on BACnet MS/TP

How the controller automatically assigns MAC addresses on a BACnet MS/TP bus.

Operator Interfaces and Service Button

Controller Status LEDs Description

Service Button Functions

How to use the service button for resets, firmware updates, and operational functions.

Communication Interfaces Overview

Interface Overview and TIA/EIA-485 Standards

BACnet MS/TP and WiFi Connectivity Details

Information on BACnet MS/TP interface, considerations, and WiFi adapter connection.

Specific Communication Interface Details

RJ45 Connector for BACnet WiFi Adapter

Modbus Interface Specifications

Modbus Interface Configuration and Compliance

Details on the non-isolated RS485 interface for Modbus master communication.

Sylk Bus Interface

Sylk Bus Connection and Specifications

I/O Terminals and Output Specifications

Power Output Terminal Current Limits

Maximum permissible current outputs for power terminals to prevent device damage.

Relay and Triac Output Details

Universal Input Configuration and Protection

Wall Modules and Display Configuration

Troubleshooting and Support

Troubleshooting and Error Resolution Steps

Steps and advice for diagnosing and resolving common controller issues.

Sensor Characteristics and Accuracy

Sensor Input Accuracy Specifications