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Honeywell CENTRA LINE MERLIN NX Series Installation & Commissioning Instructions

Room controller
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MERLIN NX Room Controller
GENERAL INFORMATION
Fig. 1. CLMERxxN (without optional covers)
OS no.:
power
CLMER...
supply
RL4N
230 VAC
RL6N
24 VAC
RL8N
230 VAC
RS4N
230 VAC
RS5N
24 VAC
(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
® U.S. Registered Trademark
Copyright © 2020 Honeywell Inc. • All Rights Reserved
Installation &
Commissioning
Instructions
Table 1. Overview of models
AOs
UIs
BIs
relays
6
10
0
4
6
10
0
4
6
6
(C
4
(D
4
4
4
0
4
4
4
0
4
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.
total no.
(A
triacs
(B
of I/Os
4
24
24-hr data retention
4
24
24-hr data retention
24-hr data retention; supports switch
inputs with 24 V pull-up for connection of
4
24
standard light switches; preferred model
for light and blinds control
2
14
24-hr data retention
2
14
24-hr data retention
remarks
EN1Z-1035GE51 R0420

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  Summary of Contents for Honeywell CENTRA LINE MERLIN NX Series

  • Page 1 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. This model's four binary-only inputs are labelled as UI1-UI4. CPU: 32-bit MK24FN Freescale Kinetis Cortex M4 ® U.S. Registered Trademark Copyright © 2020 Honeywell Inc. • All Rights Reserved EN1Z-1035GE51 R0420...
  • Page 2: Dimensions And Mounting

    MERLIN NX ROOM CONTROLLER – INSTALLATION & COMMISSIONING INSTRUCTIONS DIMENSIONS AND MOUNTING Housings The controller is available in two housing sizes, both IRM-RLC conforming to IP20: (BULK PACK, 10 pcs.) ▪ RLxN (large housing): W x L x H = 110 x 198 x 59 mm and ▪...
  • Page 3: Terminal Assignment

    MERLIN NX ROOM CONTROLLER – INSTALLATION & COMMISSIONING INSTRUCTIONS Wall Mounting/Dismounting The controller is powered by 230 VAC, and is equipped with differing numbers of triac outputs, relay outputs, etc. capable The unit can be mounted on floors, walls, and ceilings in any of being configured in a variety of ways.
  • Page 4 MERLIN NX ROOM CONTROLLER – INSTALLATION & COMMISSIONING INSTRUCTIONS Table 2. RSxN Room Controller: Overview of terminals and functions term. printing function RS4N RS5N 1, 2 "L", "N" 230-V power supply Removable 24-V power supply input and aux. output voltage (24 VAC) 3, 4 "24V~", "24V0"...
  • Page 5 MERLIN NX ROOM CONTROLLER – INSTALLATION & COMMISSIONING INSTRUCTIONS Table 4. Universal input types and characteristics type 1 type 2 type 3 UI1, UI2, UI3, UI1, UI2, UI3, UI7, UI8, UI9, UI4 (RL8N, UI4, UI5, UI6 UI10 only) dry contact (closed: res. <10 kΩ; open: res. > 20 kΩ; max. 0.2 Hz; pull-up voltage: 10 V) dry contact (closed: res.
  • Page 6 MERLIN NX ROOM CONTROLLER – INSTALLATION & COMMISSIONING INSTRUCTIONS Table 6. RLxN Room Controllers: Overview of terminals and functions (by model) term. printing function RL4N RL6N RL8N 1, 2 "L", "N" 230-V power supply 3, 4 "24V~", "24V0" Removable 24-V power supply input 5, 6 "24V~", "24V0"...
  • Page 7 MERLIN NX ROOM CONTROLLER – INSTALLATION & COMMISSIONING INSTRUCTIONS *OPTIONAL FUSE (TO PROTECT CONTROLLER‘S INTERNAL 24 25 26 27 28 29 30 31 32 TRANSFORMER, WHICH HAS ONLY A NON-RESETTABLE FUSE). RS485-1 COACH NX EAGLEHAWK NX CLCMTR40x/TR42x LIGHT PROP. PROP. WALL MODULE COOL HEAT...
  • Page 8 MERLIN NX ROOM CONTROLLER – INSTALLATION & COMMISSIONING INSTRUCTIONS CLCM2T WALL MODULE 24 25 26 27 28 29 30 31 32 RS485-1 COACH NX EAGLEHAWK NX CLCMTR40x/TR42x WALL MODULE LIGHT PROP. PROP. TEMP SETP COOL HEAT OCCUPANCY °C CONTACT BACnet MS/TP 24V~ 24V0 24V~...
  • Page 9 MERLIN NX ROOM CONTROLLER – INSTALLATION & COMMISSIONING INSTRUCTIONS *OPTIONAL FUSE (TO PROTECT CONTROLLER‘S INTERNAL CLCM4T,5T,6T111 WALL MODULE BACnet WiFi TRANSFORMER, WHICH HAS ONLY A NON-RESETTABLE FUSE). ADAPTER COACH NX CLCMTR40x/TR42x WALL MODULE PROP. PROP. TEMP SETP LIGHT COOL HEAT °C OCC.
  • Page 10 MERLIN NX ROOM CONTROLLER – INSTALLATION & COMMISSIONING INSTRUCTIONS CLCM4T,5T,6T111 WALL MODULE BACnet WiFi ADAPTER COACH NX CLCMTR40x/TR42x WALL MODULE PROP. PROP. TEMP SETP LIGHT COOL HEAT °C OCC. CONTACT RJ45 Pt1000 PLUG BACnet MS/TP 24V0 24V~ 24V~ UI10 8 7 6 5 4 3 2 1 RJ45 INTERFACE 24V~ 24V~...
  • Page 11: Power Supply

    MERLIN NX ROOM CONTROLLER – INSTALLATION & COMMISSIONING INSTRUCTIONS POWER SUPPLY 24-VAC Terminals for Auxiliary or Field Devices All 24-VAC auxiliary power supply terminals support 1 x 2.5 General Information or 2 x 1.5 mm wiring. CAUTION 24-VAC Models The 24-VAC models are powered via a black removable To prevent a risk of injury due to electrical shock terminal plug (terminals 3+4), thus allowing daisy chain wiring and/or damage to device due to short-circuiting, low-...
  • Page 12: Electrical Data

    MERLIN NX ROOM CONTROLLER – INSTALLATION & COMMISSIONING INSTRUCTIONS Electrical Data All Models (230 VAC and 24 VAC) CAUTION In the case of capacitor-driven fail-safe actuators, the actuators must be directly connected to a suitable 24-volt power supply. "Suitable" here means: Capable of withstanding the high in-rush currents characteristic of capacitor-driven fail-safe actuators.
  • Page 13 MERLIN NX ROOM CONTROLLER – INSTALLATION & COMMISSIONING INSTRUCTIONS FREELY PROGRAMMABLE APPLICATIONS nected as input to the function block as programmed in the wire sheet (e.g., manual commands received via BACnet All models can be used with freely programmable appli- MS/TP).
  • Page 14 MERLIN NX ROOM CONTROLLER – INSTALLATION & COMMISSIONING INSTRUCTIONS Commissioning Parameters Light • Device type, e.g. blinds, shutter, drape… OutManualAddressedCmdBits • Time to open the blinds. OutFeedback • Time to close the blinds. OutCause • Slat angle fully open. EmergencyCmd (highest prio) EmergencyCause •...
  • Page 15 MERLIN NX ROOM CONTROLLER – INSTALLATION & COMMISSIONING INSTRUCTIONS Application Commands • Assignment of analog outputs for light dimming via 1…10V. Energy optimization per EN15232 or special behavior of the NOTE: Only AO3 and AO4 of the RL8N support dimming. light can be achieved via the application input.
  • Page 16 MERLIN NX ROOM CONTROLLER – INSTALLATION & COMMISSIONING INSTRUCTIONS COMMISSIONING Automatic MAC Addressing In contrast to other MS/TP controllers, the RxxN Controller features automatic MAC addressing. The MAC addresses which the individual RxxN controllers in the BACnet MS/TP channel assign to themselves are not assigned in sequential order.
  • Page 17: Service Button

    MERLIN NX ROOM CONTROLLER – INSTALLATION & COMMISSIONING INSTRUCTIONS OPERATOR INTERFACES Service Button The Service Button is used to trigger dedicated events. LEDs It is important to distinguish different controller behaviors The controller features the following LEDs: which are elicited depending upon whether the controller is T2 R2 T1 R1 powering up or in normal operation when the Service Button is pressed.
  • Page 18: Communication Interfaces

    U.L. requirements, each RS485 interface may be examples. loaded with a max. of 32 unit loads. E.g., Honeywell / Table 10. Baud rate vs. max. cable length CentraLine devices have as little as ¼ unit load each, so that baud rate max.
  • Page 19 MERLIN NX ROOM CONTROLLER – INSTALLATION & COMMISSIONING INSTRUCTIONS ▪ Must conform to TIA/EIA-485 cabling guidelines and NOTE 5: Between devices equipped with non-isolated RS485 ANSI/ASHRAE Standard 135-2010. bus interfaces, potential differences of max. ±7 V are allowed. Further, this bus should not extend beyond ▪...
  • Page 20 RS485 Repeaters RS485 repeaters are possible, but have not been tested by The controller features a non-isolated RS485 interface Honeywell. Hence it is within responsibility of the installing / (RS485-2) suitable for Modbus communication: commissioning person to ensure proper function.
  • Page 21 MERLIN NX ROOM CONTROLLER – INSTALLATION & COMMISSIONING INSTRUCTIONS Example: RSxN Modbus Master Controller and Connected Sylk Bus Modbus Slaves (with inserted termination resistors) The controller features a removable Sylk interface for con- nection to Sylk Bus-capable devices (e.g., the TWISTED PAIR CLCMTR40x/42x):...
  • Page 22 MERLIN NX ROOM CONTROLLER – INSTALLATION & COMMISSIONING INSTRUCTIONS Triac Outputs I/O TERMINALS NOTE: Recommended fuse (F1): 1.25 A time-lag fuse (IEC). User must consider the correct voltage and max. CAUTION breaking capacity / interrupting rate (line voltage urgently requires high breaking capacity / Failure to observe the following max.
  • Page 23 MERLIN NX ROOM CONTROLLER – INSTALLATION & COMMISSIONING INSTRUCTIONS Bias Resistors Each universal input is equipped with one bias resistor. See Fig. 29. SENSOR BIAS DOWN Fig. 29. Schematic of universal inputs and bias resistors LEGEND: 10 V (except for UI1-4 of RL8N, which have 24 V). Bias resistor (with a resistance of 24.9 kΩ...
  • Page 24: Wall Modules

    MERLIN NX ROOM CONTROLLER – INSTALLATION & COMMISSIONING INSTRUCTIONS WALL MODULES ▪ OVERRIDE OCCUPANCY: If the wall module's LED is ON continuously, then the wall module's override button The CLCM1T,2T,4T,5T,6T111 and CLCMTR40x/TR42x Wall or a BACnet MS/TP network command has placed the Modules can be used in conjunction with the controller to per- controller into the "occupied"...
  • Page 25 MERLIN NX ROOM CONTROLLER – INSTALLATION & COMMISSIONING INSTRUCTIONS Unoccupied Mode Standby Mode CLCMTR42xx CONFIGURED CLCMTR42xx CONFIGURED CLCMTR42xx CONFIGURED CLCMTR42xx CONFIGURED TO DISPLAY ENGLISH TO DISPLAY SYMBOLS TO DISPLAY ENGLISH TO DISPLAY SYMBOLS AUTO AUTO AUTO AUTO °C °C °C °C OVERRIDE OVERRIDE...
  • Page 26 MERLIN NX ROOM CONTROLLER – INSTALLATION & COMMISSIONING INSTRUCTIONS LCD of a TR42x Configured to Display Info on Fan CLCMTR42xx CONFIGURED TO DISPLAY SYMBOLS is displayed, the fan is switched OFF. Depending upon the given application configuration, the effective control AUTO mode for underfloor heating, radiator, ceiling heating, and °C...
  • Page 27: Troubleshooting

    Construction: independently mounted control, Check if the Status LED's behavior is changed if you switch for panel-mounting the power OFF/ON. Please contact Honeywell if this does not solve the problem. Action: type 1.C Further, the test function of COACH NX can also be used to Rated impulse voltage: 2500 V at 230 V;...
  • Page 28: Sensor Characteristics

    MERLIN NX ROOM CONTROLLER – INSTALLATION & COMMISSIONING INSTRUCTIONS APPENDIX: SENSOR CHARACTERISTICS Sensor Input Accuracy The controller's internal sensor inputs support NTC10kΩ and NTC20kΩ sensors. The following table lists the typical minimum accuracies of the hardware and software for these temperature sensors. Table 14.
  • Page 29 MERLIN NX ROOM CONTROLLER – INSTALLATION & COMMISSIONING INSTRUCTIONS NTC 10 kΩ Temp. Resistance Terminal Temp. Resistance Terminal Temp. Resistance Terminal Temp. Resistance Terminal [°C] [k voltage [V] [°C] [k voltage [V] [°C] [k voltage [V] [°C] [k voltage [V] 7.904 17.252 3.894...
  • Page 30 MERLIN NX ROOM CONTROLLER – INSTALLATION & COMMISSIONING INSTRUCTIONS NTC 20 k Temp. Resistance Terminal Temp. Resistance Terminal Temp. Resistance Terminal Temp. Resistance Terminal [°C] voltage [V] [°C] voltage [V] [°C] voltage [V] [°C] voltage [V] [k [k [k [k -50.0 1659 8.78...
  • Page 31 MERLIN NX ROOM CONTROLLER – INSTALLATION & COMMISSIONING INSTRUCTIONS PT 1000 Temp. Resistance Terminal Temp. Resistance Terminal Temp. Resistance Terminal Temp. Resistance Terminal [°C] [ voltage [V] [°C] [ voltage [V] [°C] [ voltage [V] [°C] [ voltage [V] -50.0 0.312 10.0 1039...
  • Page 32 MERLIN NX ROOM CONTROLLER – INSTALLATION & COMMISSIONING INSTRUCTIONS Temp. Resistance Terminal Temp. Resistance Terminal Temp. Resistance Terminal Temp. Resistance Terminal [°C] voltage [V] [°C] voltage [V] [°C] voltage [V] [°C] voltage [V] [ [ [ [ 190.0 1722 0.647 250.0 1941 0.723...
  • Page 33 MERLIN NX ROOM CONTROLLER – INSTALLATION & COMMISSIONING INSTRUCTIONS NI1000TK5000 Temp. Resistance Terminal Temp. Resistance Terminal Temp. Resistance Terminal Temp. Resistance Terminal [°C] [Ω] voltage [V] [°C] [Ω] voltage [V] [°C] [Ω] voltage [V] [°C] [Ω] voltage [V] 1081.4 0.416 1316.3 0.502 1580.2...
  • Page 34 ORKS Corporation registered in the United States and other countries. Manufactured for and on behalf of the Connected Building Division of Honeywell Products and Solutions SARL, Z.A. La Pièce, 16, 1180 Rolle, Switzerland by its Authorized Representative: CentraLine Honeywell GmbH Böblinger Strasse 17...

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