Bronkhorst E-7000 Bedienungsanleitung PDF herunterladen (Seite 10)

BRONKHORST HIGH-TECH B.V.

page 10 9.17.004

1.4.3.1 Analog input/output signals

Analog input signals should be connected to pin 2 (+) and 0 V/common.

Analog ouput signals are available at pin 1 (+) and 0 V/common.

Signals are according to one of the Bronkhorst High-Tech B.V. standards. The model configuration contains

a code, describing the input/output signals.

Notes:

a. Max. load current output (sourcing) : 375 Ohm

b. Min. load voltage ouput : 10 kOhm

c. Input load resistance (voltage) : 22K4

d. Input load resistance (current) (sinking) : 200 Ohm

e. Input load resistance (current) (sourcing) : 250 Ohm

1.4.3.2 Relay contacts

The (isolated) relay contacts are available at the following pins:

pin 5: common

pin 6: normally open

pin 7: normally closed

Note: contact arrangement during "power on"/"no alarm".

The specifications of the relay contacts are:

Contact arrangement : SPCO (Single Pole Changeover)

Contact rating : Switch voltage : 24 Vac/dc max.

Switch current : 0,2 A ac/dc max.

Switch power : 3 W/3 VA max.

1.4.3.3 Reset input

The reset input signal should be connected to pin 8 (+ V) and pin 3 (0 V/common).

Reset can be achieved by either pulling the + V input (pin 8) to 0 V (pin 3) by means of a contact or a

transistor, or by applying an active low logic signal to pin 8 (+ V) and pin 3 (0 V). The logic signal level should

be 5 V (high) or 0 V (low).

1.4.4 Connection to FLOW-BUS

1.4.4.1 RJ45 connector

The shielded RJ45 modular jack connector has the following pin configuration:

pinnumber description

+ 15 Vdc supply

0 V (ref to +15Vdc )

Shield

0 V (ref to +15Vdc )

+ 15 Vdc supply

0 V (RS485)

RS485 - B

RS485 - A

1.4.5 RS232/FLOW-BUS interface

1.4.5.1 General description

The RS232/FLOW-BUS interface is an interface between the FLOW-BUS and the RS232 V24 serial

(computer) port.

It will either be supplied as a separate enclosed unit with a FLOW-BUS connector and a RS232 connector or

as an integral 14TE module of your E-7000 readout and control system.

The converter offers communication with a baudrate up to 38,4 kbaud.

Communication software support is available. Consult manual RS232/Flow-Bus interface.

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