Johnson Controls Metasys NCE25 series Manuale utente

NCE25 Installation Instructions

Application

The Metasys® Network Control Engine (NCE) 25 Series controllers combine the network supervisor

capabilities and Internet IP network connectivity of a Metasys Network Automation Engine (NAE)

with the I/O point connectivity and direct digital control capabilities of a Metasys Field Equipment

Controller (FEC). These network engines provide a cost-effective solution designed for central plant

applications and large built-up air handlers.

NCE25 Series controllers provide integration to the following network protocols: BACnet/IP, BACnet

MS/TP, and N2 Bus and integrations to other building management communication technologies,

including Modbus®, M-Bus, and KNX. The network engine at 9.0.7 is shipped with the licenses and

drivers for all three communication protocols: Modbus, M-Bus, and KNX.

Note: LonWorks® is no longer supported for an NCE at Release 9.0.7. All NCEs that feature the

LonWorks integration remain at Release 9.0 or earlier.

Figure 3 shows the physical features of an MS-NCE2567-0 model. See Table 18 for NCE25 Series

model information and features.

Important: For existing custom integrations, contact your local Systems Integration Services

(SIS) team before an upgrade. Updated drivers can be provided on request.

Installation

Follow these guidelines when installing an NCE:

• Transport the NCE in the original container to minimize vibration and shock damage to the

network .

• Verify that all the parts shipped with the NCE.

• Do not drop the NCE or subject it to physical shock.

Parts included

• One NCE with removable terminal plugs.

• One data protection battery installed and connected when the NCE is shipped.

• One installation instructions sheet.

Materials and special tools needed

• Three fasteners appropriate for the mounting surface (M4 screws [#8] screws).

• One 20 cm (8 in.) or longer piece of 35 mm DIN rail, and appropriate hardware for mounting the

DIN rail.

Mounting

Location considerations

Follow these guidelines when mounting a network engine:

• Ensure that the mounting surface can support the NCE and any user-supplied panel or enclosure.

Part No. 24-10143-63 Rev. S

2018-12-17

Release 9.0.7

(barcode for factory use only)

*241014363S*

• Mount the NCE in a horizontal, upright orientation.

• Mount the NCE on an even surface in wall mount applications whenever possible. If you must

mount the network engine on an uneven surface, be careful not to crack the mounting clips or

network engine housing when tightening the screws. Use shims or washers to mount the NCE

evenly on the mounting surface.

• Mount the NCE in areas free of corrosive vapors, and observe the environmental limitations

listed in the Technical specifications section.

• Allow sufficient space to accommodate cable and wire connections. See Figure 1.

• Do not mount the network engine where the ambient temperature may exceed 50°C (122°F).

• Do not mount the network engine on surfaces that are prone to vibration or in areas where

electromagnetic or radio frequency emissions can interfere with network engine communication.

• Do not obstruct the network engine housing ventilation holes.

• Do not mount a power transformer below the network engine.

On applications where the network engine is mounted inside a panel or enclosure, follow these

additional guidelines:

• Do not install the network engine in an airtight enclosure.

• Do not install heat-generating devices in the enclosure with the network engine that may cause

the ambient temperature to exceed 50°C (122°F).

Wall mount applications

Use the holes in the three mounting clips for wall mount applications.

To mount the network engine on a wall or other vertical surface, complete the following steps:

1. Ensure that all three mounting clips are inserted into the back of the network engine housing

and then pulled outward and snapped firmly into the extended position. See Figure 2.

2. Mark the location of the three wall mount holes using the dimensions in Figure 1, or hold the

network engine up to the wall as a template and mark the locations.

3. Drill holes in the wall at the locations marked in Step 2 and insert wall anchors, if necessary.

NCE25 Installation Instructions2

Figure 1: NCE mounting screw hole dimensions,

(mm/in.), and mounting area requirements

4. Position the network engine and insert the screws through the holes in the mounting clips, and

carefully tighten all the screws.

Important: Do not overtighten the mounting screws. Overtightening the screws may

damage the mounting clips or NCE housing.

DIN rail mount applications

To mount the network engine on a DIN rail:

1. Securely mount a 20 cm (8 in.) or longer section of DIN rail horizontally and centered in the

required space.

2. Pull out the two mounting clips and snap them firmly. See Figure 2.

3NCE25 Installation Instructions

Figure 2: DIN rail and mounting clip features on the back of an NCE

3. Hang the network engine by the DIN rail hooks on the top track of the DIN rail, and position

the network engine DIN rail channel snugly against the tracks of the DIN rail. See Figure 2.

4. Push the bottom mounting clips up to secure the network engine on the DIN rail tracks.

To remove the network engine from the DIN rail, snap the bottom DIN clips to the outward

extended position and carefully lift the network engine off the DIN rail.

Enclosure mount applications

Mount the enclosure in accordance with the manufacturer’s instructions, and then mount the

network engine in the enclosure following the guidelines in the Location considerations and

Mounting sections.

NCE25 Installation Instructions4

NCE25 physical features

Figure 3: Front of NCE2567-0 showing physical features (power

and I/O terminal blocks, and NCE mounting clips not shown)

Table 1: Callout table for NCE25 physical features

Callout Description

1 The LED status indicators vary depending on the NCE model. See LED status

indicators.

2 Binary output, configurable output, and analog output terminal blocks are located

on the top side of the NCE. See Input and output wiring guidelines.

3 6-Pin modular Bus ports.

• FC Bus port for MS/TP models only, connects to a Wireless Commissioning

Converter (MS-BTCVT-1).

• SA Bus port connects to a NS network sensor, a DIS1710- Local Controller Display,

or a Wireless Commissioning Converter (MS-BTCVT-1).

4 Data protection battery component.

5 NCE reset switch.

6 24 VAC Class 2 supply power terminal block is located on the top side of the NCE.

7 Display screen on specified models and displays NCE menus and commands.

8 Display navigation keyypad is used to navigate the display menus and initiate

commands.

9 Cover screw.

5NCE25 Installation Instructions

Table 1: Callout table for NCE25 physical features

Callout Description

10 FC Bus teminal block connects an NCE to an N2 Bus or FC Bus segment. It is not

available on all models.

11 End-of-Line (EOL) Termination Switch sets the NCE as an EOL terminating device. Set

the EOL switch according to the NCE position on the N2 or FC Bus segment.

12 SA Bus Terminal Block connects the NCE field controller to the SA Bus.

13 Standard USB port.

14 Universal inputs and Binary input terminal blocks are located on the bottom side of

the NCE. See Input and output wiring guidelines.

15 Ethernet port RJ-45 8-pin modular jack connects the NCE to the IP network.

16 RS-232 Serial port.

17 Modem Jack - 6 pin modular jack, only on NCE models with optional internal

modems.

Wiring

Power supply, network, and communication connections

See Figure 3 for the location of the NCE’s power supply terminal, bus terminals and ports, USB port,

Ethernet port, and modem port.

Important: Modem functions are available with Metasys Release 9.0, but are not available if

you update the NCE25 to Release 9.0.7.

Note: Do not remove the red terminal block keys from the board mounted terminal blocks as

this can cause a removable terminal plug being plugged into the wrong terminal block, which

can cause the network engine to malfunction.

The NCE25 supports Modbus, M-Bus, and KNX integrations when upgraded to Release 9.0.7.

24~ supply power terminal block

The 24~ supply power terminal block is a gray, keyed, removable 3-terminal block located on the

top side of all NCE models. See Figure 3, Figure 11, and Figure 12.

In North America, the NCE25 requires a Class 2, 24 VAC, 25 VA minimum power supply. Outside

North America, use a 24 VAC SELV transformer at the appropriate rating. A minimum input voltage

of 20 VAC is required for the network engine to operate properly.

Note: The maximum power consumption of an NCE25 is 25 VA, but that does not include

power for internally sourced BO points. Applications that provide power to BO points and CO

points configured as BO points can require up to 125 VA of additional power over the 25 VA

minimum required for the NCE25.

SA Bus terminal block

All NCE models provide a brown, keyed, removable 4 terminal Sensor/Actuator (SA) Bus terminal

block. See Figure 3. Connect the 4-wire SA Bus cable to the SA BUS terminal block. See SA Bus rules.

SA Bus modular port

The 6-Pin modular SA Bus port is available on all NCE models. See Figure 3 and Figure 4. The SA Bus

port connects to the following:

NCE25 Installation Instructions6

• A Wireless Commissioning Converter (MS-BTCVT-1) to commission the network engine with the

Controller Commissioning Tool.

• A DIS1710 Local Controller Display to provide a display screen on NCE25 models without an

integral display screen.

• An NS Series Network Sensor to provide room temperature data to the network engine.

Figure 4: Pin number assignments for Sensor, SA

Bus, and FC Bus Ports on NCE, FEC, IOM, and VMA16

FC Bus terminal block

The blue, keyed, removable 4-terminal block FC BUS terminal block is designed for RS485 serial

protocol field buses and is available on NCE models that support N2 Bus or MS/TP FC Bus

applications. See Figure 3 for more information. You can complete the following connections:

• Connect the 3-wire N2 Bus to the FC BUS terminal block on NCE models that support N2 Bus

applications. See Figure 3 and N2 Bus rules for more information.

• Connect the 3-wire MS/TP FC Bus to the FC BUS terminal block on NCE models that support MS/

TP FC Bus applications. See Figure 3 and MS/TP FC Bus rules for more information.

The SHLD terminal on the FC BUS terminal block is a convenient terminal to connect cable shield

drains in daisy-chain bus applications that use shielded cable.

LonWorks network terminal block

Note: LonWorks® is no longer supported for an NCE at Release 9.0.7. All NCEs that feature the

LonWorks integration remain at Release 9.0 or earlier.

The blue, keyed, removable, 3-position LON terminal block connects a LonWorks network trunk

to NCE25 models that support a LonWorks network trunk. The Shield (SHD) on the LON terminal

block is soft grounded to the network engine chassis terminal, and you can use it as a convenient

terminal to connect cable shield drains in daisy-chain bus applications that use shielded cable.

FC Bus modular port

The 6-pin modular FC BUS port is available only on NCE models that support MS/TP FC Bus

applications (Figure 3 and Figure 4). Connect a Wireless Commissioning Converter (MS-BTCVT-1) to

the modular FC BUS port to commission the NCE with the CCT.

RS232C serial port

For a network engine updated with Release 9.0.7, the RS232C serial port only outputs information

during startup to a VT100 or a computer with a VT100 emulator. For a network engine at 9.0.7

configured with vendor integrations, the RS232C serial port provides a direct connection to a

Modbus RTU or M-Bus network using a standard 9-pin female data terminal equipment (DTE) to 9-

pin female DTE null modem cable. You can integrate only one device on this port.

7NCE25 Installation Instructions

Standard USB port

A network engine updated to Release 9.0.7, does not support modem functionality through

the USB port. However, for a network engine with vendor integrations, you can configure the

vendor integration to use an external flash drive connected to the USB port to capture diagnostic

information when the engine is in diagnostic mode.

Ethernet port

The Ethernet port, labeled ETHERNET, is an 8-pin RJ-45 network port for connecting the network

engine to Ethernet networks (10 or 100 Mbps). For a network engine configured for vendor

integrations, use this port for connecting a Modbus TCP, M-Bus TCP, or KNX network.

Internal modem

Modem functionality for NCE25 models that feature an internal modem is removed supported

when you update the NCE25 with Release 9.0.7. If your application requires a modem, image the

engine with Release 9.0.

Wiring rules for networks and field buses

All NCE25 Series models are designed to connect to Ethernet IP networks and support a single SA

Bus.

A network engine also supports an MS/TP field bus trunk, an N2 Bus trunk, and up to two vendor

integrations. For example, an NCE support two Modbus, two M-bus, or one of each. If a KNX

integration is required, an NCE25 supports only one KNX IP Integration.

IP Ethernet network rules

All NCE25 models are designed to connect to properly configured IP Ethernet networks. Observe

the IP Ethernet network rules in the following table.

Note: You can find the Media Access Control (MAC) address on a label on the network engine

housing.

Table 2: Ethernet network rules

Category Rules/maximums allowed

General Star topology with network hubs/switches.

Number of devices Maximum number of supervisory devices that you can connect to

one site in the Metasys system depends on the Metasys server. For

details, refer to Metasys System Configuration Guide (LIT-12011832).

2,000 m (6,561 ft) for plastic/glass fiber optic with external adapter.Line length and type

100 m (328 ft) CAT5 cable.

Terminations For 10/100 BaseT, no line terminators allowed.

MS/TP FC Bus rules

The MS/TP FC Bus connects FECs, VMA1600s, IOMs, TEC Series thermostats, and third-party MS/TP

controllers to NCE256x models.

NCE256x models support an FC Bus trunk with up to 32 MS/TP devices. Observe the rules in the

following table when designing and installing the connected FC Bus.

NCE25 Installation Instructions8

Table 3: FC Bus rules

Category Rules/maximums allowed

General One FC Bus with up to 32 MS/TP devices (on NCE256x models only).

Note: An FC port on a network engine can connect to only one

bus segment on an FC Bus.

Only a daisy-chain topology is allowed (no T or Star topology

configurations).

Number of devices One FC Bus Supports up to 32 MS/TP controllers on a single FC Bus

segment.

FC Bus can be up to 1,520 m (4,987 ft) using 0.6 mm (22 AWG) 3-wire

twisted, shielded cable.

Cable length for FC bus

When using fiber-optic connections: 2,010 m (6,594 ft) between two

fiber-optic modems.

Cable Stranded 0.6 mm (22 AWG) 3-wire twisted, shielded cable is

recommended.

Stranded 0.6 mm (22 AWG) 4-wire (two twisted-pairs) shielded cable

is acceptable.

Note: Ensure the + and - bus leads are a twisted pair. On

applications using 4-wire (two twisted-pairs) cable, isolate and

insulate unused conductor. Refer to the MS/TP Communications

Bus Technical Bulletin (LIT-12011034) for more information.

EOL termination on the FC

bus

The EOL switch must be set to On (or an EOL terminator installed)

on the two devices located at either end of each bus segment on

an FC Bus. The EOL switches must be set to Off (or EOL termination

disabled) for all other devices on the bus segment on an FC Bus. See

Setting the end-of-line switch for information on setting the EOL

switch.

SA Bus rules

The SA Bus connects the Metasys Input/Output Modules (IOMs), NS Series Network Sensors,

DIS1710 Local Controller Display, specified variable frequency drives, and Wireless Commissioning

Converter (MS-BTCVT-1) to an NCE.

Observe the rules in the following table when designing and installing the SA Bus for your

application.

Table 4: SA Bus rules

Category Rules/limits

General Each bus supervisor supports one SA Bus.

The SA Bus supports up to 10 devices.

Note: The SA Bus supervisor provides power for the NS

network sensors on the bus. Due to power limitations, only 4

of the 10 devices on a SA Bus can be NS sensors. The SA Bus on

NCE25 models that have an integral Local Controller Display do

not support an optional DIS1710 Local Controller Display.

Number of devices

supported on the bus

The SA Bus does not support repeaters.

9NCE25 Installation Instructions

Table 4: SA Bus rules

Category Rules/limits

365 m (1,198 ft) maximum bus length.

152 m (500 ft) maximum between an NS network sensor and the

bus supervisor FEC or VMA supplying power to the sensor) using

bus cable connected to the SA Bus screw terminal blocks.

30 m (98 ft) maximum length for network sensors using bus cables

connected to the 6-pin modular jack (6-Pin SA Bus port).

366 m (1,198 ft) maximum Bus Length.

Cable length for SA Bus

1.5 m (5 ft) maximum between the network engine and DIS1710

Local Controller Display.

Recommended bus cable

type

Screw Terminal Connections: 0.6 mm (22 AWG) Stranded 4-wire, 2-

Twisted Pairs, Shielded Cable for screw terminals.

Modular Jack Connections: 6-Pin Modular Connectors with 24 or

26 AWG 6-Wire, 3 Twisted-Pairs.

EOL termination on the SA

Bus

Each SA Bus supervisor has integral (fixed ON) EOL termination,

which typically provides sufficient EOL termination on a SA Bus.

Long SA Bus runs or persistent communication problems on a SA

Bus may require EOL termination at the last device on the SA Bus in

addition to the integral EOL termination at the SA Bus supervisor)

All NCE25 models are SA Bus supervisors.

N2 Bus rules

The N2 Bus connects N2 controllers to specified NCE25 models. NCE251x models support a single

N2 Bus trunk with up to 32 N2 devices.

Observe the rules in the following table when designing and installing the connected N2 Bus.

Table 5: N2 Bus rules

Category Rules/maximums allowed

One N2 trunk supported (on NCE251x models only).General

Only daisy-chained devices (with maximum stub length of 3 m [10

ft] to any device).

Number of N2 devices

supported

Up to 32 N2 devices supported on the N2 trunk.

1,500 m (4,921 ft) twisted pair cable.Cable length and type

2,000 m (6,561 ft) between two fiber modems.

Cable Solid or stranded 1.0 mm (18 AWG) 3-wire is recommended. Solid

or stranded 0.5 mm (24 AWG) larger 3-wire or 4-wire (two twisted-

pairs) is acceptable.

Note: Ensure the + and - bus leads are a twisted pair. On

applications using 4-wire (two twisted-pairs) cable, isolate and

insulate unused conductor.

Bus termination N2 devices are self-terminating and have no EOL setting.

NCE25 Installation Instructions10

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