Black Box IC109A-R2 Manual de instalación descargar pdf (Pagina 66)

63230-216-229-B1

Installation

ACE9492

2-Wire RS485 Network Interface

Function

PE50029

The ACE9492 interface performs two functions:

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

communication network

b It is the main network cable branching box that connects Sepam™ with a

CCA612 cord

Characteristics

ACE9492 Module

Weight 0.1 kg (0.22 lb.)

ACE9492 two-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

Two-Wire RS485 Electrical Interface

Standard EIA 2-wire RS485 differential

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 Two-Wire RS485 Network

with Standard Cable

DE80035

Number of

Sepam™ Units

Maximum Length with

12 V DC Power Supply

Maximum Length with

24 V DC Power Supply

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

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

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

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

Description and Dimensions

and Terminal blocks for network cable

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

Grounding terminal

1 The Link Activity LED flashes when active communication occurs (sending or

receiving is in progress).

2 The jumper for 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

(inner diameter of clamp = 6 mm or 0.24 in).

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

DE80127

Connection

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

2 Connect the ground terminal by tinned copper braid with 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 are fitted with clamps to 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 physically contact (and wrap around) the clamp

5 Use a CCA612 cord (length = 9.8 feet, or 3 m, with green fittings) to connect the

interface to connector on the base unit

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

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

of the daisy chain.

2.83

(72)

3.46

(88)

in.

(mm)

(30)

(1)

1.18

termination

2-wire

network

Power supply

24 V DC

termination

1 2 ... 61 62 63 64 65 66 67 68 69 70 71 ... 163 164

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Black Box IC109A-R2 Manual de instalación Pagina 66

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