ONLINE ELECTRONICS LTD
ID5000P_5001_A01
Page 9 of 18
3.6.
CURRENT LOOP OUTPUT
Refer to section 5 EXTERNAL CONNECTIONS for connection instructions.
While in LISTENING state the loop current shall be 5mA ±1mA.
While in DETECTION state the loop current shall be 19mA ±1mA.
Note that if the MODBUS INTERFACE is fitted then inverting the relay logic as per section 3.7.7
SET OUTPUT will also reverse the state of the CURRENT LOOP output. See section 5.3 MODBUS
PCB OPTION for more information.
3.7.
SINGLE BUTTON MENU INTERFACE
While in LISTENING MODE, the control button can be pressed at any point to enter the menu
interface. While in the menu interface, the unit will ignore all pig passages. From the menus
the user can configure several parameters which are discussed in this section.
While in the menu system, every time the user presses the control button the CURSOR will
move down one line and the COUNTDOWN INDICATOR will be reset to 5. Once the CURSOR is
pointing at the desired item the user simply allows the COUNTDOWN INDICATOR to reach 0
and the selected item will be executed. This simple behaviour is used throughout the menu
interface to modify settings and interact with the unit.
To modify parameters, simply follow the instructions provided on the screen. All parameters
are incremented by pressing the control button until they are at the desired value then
allowing the COUNTDOWN INDICATOR to reach 0.
If you do not wish to modify a parameter then simply allow the COUNTDOWN INDICATOR to
reach 0 without operating the control button. The menu system is designed so that the unit
will always return to LISTENING MODE if the control button is left released for a long enough
time.
