Bronkhorst E-7000 - Manual (Page 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
1
2
3
4
5
6
7
8
+ 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.