Black Box IC109A-R2 Instalační manuál stáhnout pdf (Strana 67)

63230-216-229-B1

Installation

ACE959

4-Wire RS485 Network Interface

Function

PE50023

The ACE959 interface performs two functions:

b It provides an electrical interface between Sepam™ and a 4-wire RS485

communication network

b It is the main network cable branching box for connecting a Sepam™ with a

CCA612 cord

Characteristics

ACE959 Module

Weight 0.2 kg (0.441 lb)

ACE959 Four-Wire RS485 Network Connection Interface. Assembly On symmetrical DIN rail

Operating temperature –25°C to +70°C (–13°F to +158°F)

Environmental characteristics Same characteristics as Sepam™ base units

Four-Wire RS485 Electrical Interface

Standard EIA 4-wire RS485 differential

DE80036

Distributed power supply External, 12 V DC or 24 V DC ±10%

Power burden 16 mA in receiving mode

40 mA maximum in sending mode

Maximum Length of Four-Wire RS485 Network

with Standard Cable

Number of Sepam™

Units

Maximum Length with

12 V DC Power Supply

Maximum Length with

24 V DC Power Supply

5 320 m (1000 ft) 1000 m (3300 ft)

10 180 m (590 ft) 750 m (2500 ft)

20 160 m (520 ft) 450 m (1500 ft)

25 125 m (410 ft) 375 m (1200 ft)

Description and Dimensions

(1) 70 mm (2.8 in) with CCA612 cord connected.

and are terminal blocks for network cable connection

RJ45 socket is used to connect the interface to the base unit with a CCA612 cord

Terminal block is for a separate auxiliary power supply (12 V DC or 24 V DC)

Grounding terminal

1 The link activity LED flashes when active communication occurs (sending or

receiving in progress).

2 The jumper for 4-wire RS485 network line-end impedance matching with load

resistor (Rc = 150 Ω), is set to:

b , if the module is not at one end of the network (default position). The "X"

over the "Rc" indicates that the resistor is not in use.

b Rc, if the module is at one end of the network. This means the resistor is

jumpered in.

3 Network cable clamps. The inner diameter of clamp is 6 mm or 0.24 in

DE80129

Connection

1 Connect the network cable to screw-type terminal blocks and .

2 Connect the ground terminal with a copper braid having a cross-section ≥ 6 mm²

(AWG 10), or cable with cross-section ≥ 2.5 mm² (AWG 12), and length ≤ 200

mm (7.9 in), fitted with a 4 mm (0.16 in) ring lug.

3 Check the tightness. The maximum tightening torque is 19.5 in-lb (2.2 Nm).

4 The interfaces have clamps that hold the network cable and recover shielding at

the incoming and outgoing points of the network cable;

b The network cable must be stripped

b The cable shielding braid must wrap around and physically contact the clamp

5 Connect the interface to connector on the base unit using a CCA612 cord

(length = 3 m or 9.8 ft, green fittings).

6 Supply 12 V DC or 24 V DC to the interfaces.

7 The ACE959 can connect to a separate distributed power supply (not included in

shielded cable). Terminal block is used to connect the distributed power

supply module.

Note : The cable shielding shown at left should only be done at one point, preferably at one end

of the daisy chain.

(1) Distributed power supply with separate wiring or included in

the shielded cable (3 pairs)

(2) Terminal block for connection of the distributed power

supply module

in.

(mm)

3.46

(88)

(30)

(1)

1.18

5.67

(144)

-wire

network

Power supply

24 V DC

Four-wire

termination

1 2 ... 62 63 64 65 66 67 68 69 70 71 72 ... 163 164

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