Honeywell CENTRA LINE MERLIN NX Series - Specifications; Electrical; Hardware; Operational Environment

MERLIN NX IP AND MST/TP VAV CONTROLLER - INSTALLATION INSTRUCTIONS
EN1Z-1076GE51 R0722 4
SPECIFICATIONS
Electrical
Operational Environment
Sylk™ Supported Devices
Hardware
Integrated Actuator
Differential Pressure Sensor
Parameter Specification
Rated input
voltage
20 - 30 VAC; Class 2 transformer
Nominal
Power
Consumption
IP model: 6.24 VA; controller and actuator
load (nothing connected to IO and COM)
MSTP model: 7.68 VA; controller and
actuator load (nothing connected to IO and
COM)
Full Load
Power
Consumption
IP model: 30 VA; maximum load including
external loads, Sylk™, communication,
BLE, universal IO, and 20 VDC output
(excluding the load on the solid state
relays).
MSTP model: 22 VA; maximum load
including external loads, Sylk™,
communication, BLE, universal IO output,
and 20 VDC output (excluding the load on
the solid state relays).
If the solid state relays are used, user needs
to determine the full load power
consumption (or VA rating) as per the below
example.
Example for a transformer load (VA); if there
is an addition of parallel load from two solid
state relays with 24 VAC @ 1.5 A: Total
transformer load on a fully loaded controller
will be 30 VA + 72 VA = 102 VA.
Frequency
Range
50 to 60 Hz
Auxiliary
Output
20 VDC @ 75 mA
Parameter Specification
Storage
Temperature
-40 °C to 66 °C (-40 °F to 150 °F)
Operation
0 °C to 50 °C (32 °F to 122 °F)
Humidity
5 % to 95 % RH, non-condensing
Protection
IP20, NEMA -1
Pollution
Level 2
Parameter Specification
Wall
Modules
Sensors
CLCMTR40, CLCMTR40-H, CLCMTR40-H-
CO2, CLCMTR40-CO2, CLCMTR42,
CLCMTR42-H, CLCMTR42-H-CO2,
CLCMTR42-CO2, CLCMTR71-H,
CLCMTR120 (TR75E) and CLCMTR120-H
(TR75-HE)
Parameter Specification
CPU
Crossover processor NXP I.MRT, Cortex
M7
Memory
Capacity
16 MB QSPI Flash, 16 MB SDRAM
Ethernet
(IP Model only)
Two each RJ-45 Ethernet ports.
Real Time
Clock
• 24-hour backup after power failure.
• In case of power failure, the controller
includes a super capacitor to retain the
time set with the built-in real time clock
for 24 hours. After 24 hours, the time
will reset to the factory default time until
the user performs a BACnet Time
Sync.
Small LED
Transmission or reception of BACnet and
Modbus communication signal (green)
Large LED
Controller status such as normal operation,
firmware download, broken sensor, e.g.
green, yellow or red
Parameter Specification
Torque
44 in-lbs (5 Nm)
Run Time
• Floating 108 s at 50 Hz
• Floating 90 s at 60 Hz
Mounting
Shaft
• Round 5/16 – 5/8 in (8 - 16 mm)
• Square 1/4 – 1/2 in (6 -13 mm)
Shaft Length
≥ 1 5/8 in (41 mm)
Position feedback via integrated potentiometer
• Periodic synchronization not required.
• Additional diagnostic, for example, the command to change
the actuator position does not provide a corresponding sensor
reading — actuator stuck or potentiometer damaged.
Parameter Specification
Range
±2.0 H
2
O (±500 Pa), bi-directional
Accuracy
±3 % of full range
Field replaceable differential pressure sensor.