MERLIN NX IP AND MST/TP VAV CONTROLLER - INSTALLATION INSTRUCTIONS
5 EN1Z-1076GE51 R0722
BACnet Communications
Modbus Client
Weight And Dimensions
Universal IO
Solid State Relay (SSR)
Wireless Connectivity
Standards and Compliances
CE, UL916 Energy Management Equipment, UL60730,
FCC Part 15; Class A verified, EN 55022; Class A, EN
61000-3-2, 61000
Parameter Specification
Protocol supported
BACnet IP, BACnet MSTP, Sylk™,
Modbus RTU (Modbus client only),
and BLE.
Ethernet
Connection Speed
10/100 Mbps
Internet Protocol
Version
IPv4
IP Addressing
Modes
• Dynamic: DHCP and Link Local
• Static
Sylk™ bus
2-wire, polarity-insensitive
Bluetooth
BLE for using mobile balancing
application.
Parameter Specification
Physical Layer
2-wire serial line (TIA/EIA-485) (with
additional common).
Communication
rates
9.6, 19.2, 38.4, 57.6, and 76.8 kb/s
supported.
Maximum
numbers of
devices
32, It is recommended to connect a
smaller number of devices for better
Modbus performance.
Cable and wiring
specifications
See TIA/EIA 485 Cable Specifications
on page 19.
Communication
Mode
Modbus client only.
Transmission
Mode
RTU (Remote Terminal Unit).
Address Range
Modbus clients can have an address
between 1 and 247.
Discrete inputs, coils, input registers, and
holding registers can have an address
between 1 and 65534.
Parameter Specification
Dimension
(L x W x H)
175.2 x 154.3 x 90.2 mm(7 x 6 x 3 1/2 in.)
Weight
1.5 Kg (3.06 lb)
Mounting
Fixation with bracket and shaft
Parameter Specification
AO
(Analog
output)
Voltage: 0(2) to 10 VDC direct or reverse with
-3 mA to 20 mA
Current: 0(4) to 20 mA
UI
(Universal
input)
Voltage input: 0(2) to 10 VDC direct or
reverse.
Current input: 0(4) to 20 mA
Sensors: 10k NTC TYPE II, NTC10K3,
10K3A1, 20k NTC, PT100, PT1000, NI1000
TK5000, Nickel Class B DIN 43760, PT3000,
100 Ohm to 100k Ohm resistive (custom
characteristic).
Hardwired wall sensors: Set point, fan
speed, occupancy override.
Dry contact binary input with direct or reverse
voltage.
All UI can be used for pulse input.
Maximum frequency 100 Hz, Minimum duty
cycle (50 % / 50 %) 5 ms ON / 5 ms OFF.
The MERLIN VAV controller has a single common terminal for
every two UIOs, which protects them against 24 VAC mis-wiring
and short circuits.
Specification
Solid state relays switches supply voltage and works with 24 ±
20% VAC and 41 VDC. VDC switching does not support
synchronous motor.
• 1.5 A constant; 3.5 A inrush for 0.1 sec. per SSR output
• Optional jumper between 24 VAC supply and SSR input
shared by all SSRs.
Parameter Specification
Connectivity
Bluetooth
Frequency range
2400 MHz -
2483.5 MHz
E.I.R.P for CE
(Effective Isotropic Radiated Power)
20 mW
E.I.R.P for FCC/IC
(Effective Isotropic Radiated Power)
20 mW
Parameter Specification
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