Evoqua Rivo I - Digital Inputs DI 1 and DI 2

Description and function
6
Rivo™ I Controller EN
35
Evoqua Water Technologies GmbH | W3T597263 Issue 01-0624
6.6 Digital inputs DI 1 and DI 2
There are two integrated digital inputs on the Rivo™
Backboard 4. They are provided for connection of voltage-
free contacts (< 100 Ohm) and are supplied internally with
24 V.
The functions of the digital inputs can be configured for
the specific customer application in the menu.
It is possible to influence the controller or trigger alarms.
Various functions can be assigned to the digital inputs.
With the help of a voltage-free enabling contact, e.g.
external stop, it is possible to realize the various functions:
• Alarm (freely configurable)
• Ext. stop: Dosing is switched off.
The positioner moves to 0 %.
• Empty signal contact of the chemical tank(s).
The dosing pump is switched off.
The positioner moves to 0 %.
• Change-over between internal and external dosing
factor.
CAUTION
Danger caused by external voltages at the digital
inputs
Possible consequence: Serious material damage.
• Do not apply external voltages at the digital inputs.
NOTICE
When the contact closes, restart of the controller may be
delayed due to the dosing delay time. In as-delivered sta-
tus, the digital inputs are disabled. To activate the func-
tion, configure the digital input in the menu. The digital
inputs can also be assigned as alarms.
The digital inputs can be configured directly or inversely
to switch as normally closed or normally open contacts in
the active state.