Honeywell CLMERS4N 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 CLMERS4N Specifications

General

Brand	Honeywell
Model	CLMERS4N
Category	Controller
Language	English

Summary

Before Installation

Safety Precautions

Essential safety warnings regarding power disconnection before handling terminals to prevent shock or damage.

Terminal Assignment

Power Supply Terminals

Details on the fixed screw-type terminal block for power supply connection.

Input/Output Terminals

Description of analog and binary input/output terminal arrangements on different models.

Communication Interfaces

Overview of available communication interfaces like Sylk Bus and RS485.

Power Supply

General Power Supply Information

Key electrical safety guidelines and notes on wiring practices for power supply.

Wiring Connections

Specific wiring instructions for 230-VAC and 24-VAC models, including terminal types.

Communication and Signal Terminals

Guidelines for wiring communication and signal terminals, including wire gauge recommendations.

Electrical Data

General Electrical Specifications

General electrical data applicable to all models and safety caution for actuators.

230 VAC Model Electrical Data

Specific power consumption and output voltage details for 230 VAC models.

24 VAC Model Electrical Data

Freely Programmable Applications

Blinds Control

Detailed functionality of the blinds function block, including manual positioning and application commands.

Blinds and Light Control

Blinds Commissioning and Hardware

Light Control Functionality

Overview of the light function block, including manual ON/OFF/Dim control by pushbuttons.

Light Control Details

Commissioning

Automatic MAC Addressing

Operator Interfaces

Service Button Functionality

Communication Interfaces

Interface Overview and Standards

BACnet MS/TP Communication

Details on the isolated RS485 BACnet MS/TP interface, including baud rates and cable length.

Network Connectivity

RJ45 BACnet WiFi Adapter

Modbus Interface

Modbus Wiring and Specifications

Modbus Considerations and Information

Sylk Bus Interface

I/O Terminals

Power Output Terminal Current Limits

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

Relay and Triac Output Details

Information on relay outputs, triac outputs, and triac current limitations.

Universal Input Details

Sensor and Output Characteristics

Wall Modules

Wall Module Display Configuration

Troubleshooting

Troubleshooting Steps and Tools

Guidance on checking LED behavior, using COACH NX for checks, and analyzing communication.

Sensor Characteristics

Sensor Input Accuracy

Sensor Failure Recognition