Crestron CNTBLOCK Manuel utilisateur

CRESTRON CNTBLOCK Network Terminal Block

REMOTE CONTROL SYSTEMS

1DOC. 8055A

Specifications subject to change without notice.

CRESTRON

MODEL: CNTBLOCK

POWER

NORM ON (Y)

NORM OFF (Z)

CONNECTORS

ARE IN PARALLEL

432

NET

NET NET NET NET

NET NET NET GZY24

24 G

1.9 in

4.8 cm

5.8 in

14.7 cm

Figure 1. CNTBLOCK, Network Terminal Block

TOP PANEL SIDE PANEL

(connectors exposed)UNIT DEPTH: 0.9 in (2.3 cm)

DESCRIPTION:

Functional Description

The CNTBLOCK, illustrated in figure 1, is a network terminal expander and diagnostic tool for the

CRESNET II remote control system (herein referred to as the CRESNET II system). The eight

network connectors on the CNTBLOCK are setup as two sets of four. Power can be isolated

between the two sets by disconnecting a jumper on the board. The unit provides LED indicators

which help isolate wiring problems.

Physical Description

The CNTBLOCK is housed in a black enclosure with a silk-screened top panel (refer to figure 1).

Three LEDs are located toward the center of the top panel: a green LED (POWER) and two red

LEDs (NORM ON (Y) and NORM OFF (Z)). Eight four-pin network connectors are accessible from

the two longest side panels of the unit (four per side).

For stability two Dual Lock fasteners are supplied with the unit, but unattached. If desired, the

fasteners may be applied to the underside of the CNTBLOCK. At the shorter sides of the unit, the

enclosure extends to form feet at a right angle to the side. There are three holes per foot for

inserting screws to further stabilize the unit.

LEADING SPECIFICATIONS:

Table 1 provides a summary of leading specifications for the CNTBLOCK. Dimensions and weight

are approximations rounded to the nearest tenth unit.

Table 1. Leading Specifications

SPECIFICATION DETAILS

PowerRequirements +24 VDC

Dimensions&Weight Height: 1.9 in (4.8 cm)

Width: 5.8 in (14.7 cm)

Depth: 0.9 in (2.3 cm)

Weight: 0.5 lb (0.2 kg)

Asofthedate ofmanufacture, theunit hasbeen testedand foundto complywith specificationsfor CEmarking.

CRESTRON CNTBLOCK Network Terminal Block

REMOTE CONTROL SYSTEMS

2DOC. 8055A

Specifications subject to change without notice.

INDICATORS:

NOTE Indicators are provided to denote an error with the net cable supplying network

power to the CNTBLOCK. The LEDs do not signify wiring problems that exist on the

network runs from the CNTBLOCK to other net devices.

Thereare three LED indicators located on the CNTBLOCKtop panel, refer to figure 1. The combinationof

two LEDs, NORM ON (Y) and NORM OFF (Z), and their three states of illumination, bright, dim, and off,

indicate whether wiring through the CNTBLOCK is correct. Refer to table 2 for LED illumination

combinationsand the associated wiring conditions.

Table 2. Wiring Conditions Per CNTBLOCK LED Illumination

CNTBLOCK LED ILLUMINATION

POSSIBLE WIRING CONDITIONS NORM ON (Y) NORM OFF (Z)

Correct Bright Dim

Bothnetwires disconnected Off Bright

Data Y net wire correct only Bright Bright

Data Z net wire correct only Off Dim

Datanet wires swapped Dim Bright

POWER

The green LED illuminates when 24 volts is supplied to the CNTBLOCK over the network. If the +24V

lineisimproperly connected, the POWER LED does not illuminate.

NORM ON (Y)

Thered LED brightly illuminates in combinationwith an illuminated POWER LED anda dimly illuminated

NORM OFF (Z) LED during normal operating conditions. Refer to table 2 for other states of illumination.

NORM OFF (Z)

The red LED illuminates dimly in combination with a brightly illuminated POWER and NORM ON (Y) LED

duringnormal operating conditions. Refer to table2 for other states of illumination.

INSTALLATION/SETUP:

Power Isolation

If additional power supplies are needed for a CRESNET II system, care must be taken to isolate

them from one another. The CNTBLOCK offers a convenient method for isolating network devices

which should be powered by separate power supplies. Removing the jumper from the circuit

board isolates the 24 V lines from one side of the CNTBLOCK to the other. The jumper is clearly

marked (JUMPER) on the circuit board.

CRESTRON CNTBLOCK Network Terminal Block

REMOTE CONTROL SYSTEMS

3DOC. 8055A

Specifications subject to change without notice.

Preparation for Use

Referto figure 2 for typical hook-updiagrams of the CNTBLOCK. Complete thefollowing steps in the order

providedto ensure proper installation of theunit.

NOTES

1. AllCRESNET II network wiring should follow CRESTRON's network interconnection

drawing. Although the CNTBLOCK can help diagnose some wiring problems, certain

miswirings can cause damage to the CNTBLOCK or other network devices.

2. Network termination points are available at the control system power supply.

Network units may also be daisy-chained together. For additional wiring information,

refer to the latest revision of the CRESNET II reference manual section on CNPWS

power supplies (Doc. 8091).

3. CRESTRON recommends that a diagnostic procedure using the CNTBLOCK be used

before attaching new network devices.

1. Before making any connections, review latest revision of network interconnection drawing (Doc.

5411).

2. Ifusing the CNTBLOCK with multiple power supplies, remove jumper as described in the Power

Isolationsection.

3. Connecta network cable from one power supply to the CNTBLOCK.

4. Connectadditional CRESNET II devices to the CNTBLOCK, oneat a time. Ensure proper connect of

each device by observing CNTBLOCK LED illumination and referring to table 2.

5. Ifconnectingmultiplepowersuppliesandthejumperhasbeenremoved,useanetworkcableto

connectthe second power supply to the other sideof the CNTBLOCK and repeat steps 3 and4.

PROGRAMMING:

TheCNTBLOCK does not require any specializedprogramming instructions.

FURTHER INQUIRIES:

If after reviewing this Operations Guide you still have additional questions, please contact a CRESTRON

technical support representative by dialing (888) CRESTRON [(888) 273-7876].

Figure 2. CNTBLOCK, Hook-up Diagrams

CRESTRON

MODEL: CNTBLOCK

POWER

NORM ON (Y)

NORM OFF (Z)

CONNECTORS

ARE IN PARALLEL

432

NET

NET NET NET NET

NET NET NET GZY24

24 G

NOTE:

Remove jumper.

CNPWS-75

NET

CNCAMI

NET

LC-3000

NET

CNRACK

NET

CNPWS-75

NET

CRESTRON

MODEL: CNTBLOCK

POWER

NORM ON (Y)

NORM OFF (Z)

CONNECTORS

ARE IN PARALLEL

432

NET

NET NET NET NET

NET NET NET GZY24

24 G

CNMS

NET

CNPWS-75

NET

CNWP

NET

CNWP

NET

CNWP

NET

CNSC-1A

NET

METHOD1: CONNECTIONWITHMULTIPLE POWER

SUPPLIES (JUMPER REMOVED) METHOD2: CONNECTION WITHA SINGLE POWER

SUPPLY

NOTE:

This CNMS does

not contain an

internal power

supply.

NOTE:

Jumper intact.

METHOD 3: CONNECTION WITH MULTIPLE POWER SUPPLIES (JUMPERS INTACT)

CRESTRON

MODEL: CNTBLOCK

POWER

NORM ON (Y)

NORM OFF (Z)

CONNECTORS

ARE IN PARALLEL

432

NET

NET NET NET NET

NET NET NET GZY24

24 G

LC-3000

NET

CNRFGW

NET

CNMS

NET

CNPWS-75

NET NET

CRESTRON

MODEL: CNTBLOCK

POWER

NORM ON (Y)

NORM OFF (Z)

CONNECTORS

ARE IN PARALLEL

432

NET

NET NET NET NET

NET NET NET GZY24

24 G

CNRFGW

NET

CNWP

NET

CNWP

NET

CNWP

NET

CT-1500

NET

CNPWS-75

NETNET

CNSC-1A

NET

CT-3000

NET

CAUTION:

Data wires (Y/Z) and ground

(G) are connected. Do not

connect the fourth wire

(+24V). Refer to Detail A.

NOTE: Jumper intact. NOTE:

Jumper intact.

NOTE:

This CNMS

does not

contain an

internal

power

supply.

DETAIL A

CNPWS-75

NET G

24 YZ

YEL

GRN

RED

BLK

NET G

24 YZ

NET G

24 YZ

CNTBLOCK CNTBLOCK

CRESTRON CNTBLOCK Network Terminal Block

4 DOC. 8055A

Specifications subject to change without notice.

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