Relay configuration overview - INDIGO200SERIES - INDIGO202 - INDIGO200

Indigo202 User Guide

Document code
M212843EN
Revision
A
Language
English (United States)
Product
INDIGO202
INDIGO200SERIES
Content type
Product description > Functions
Product description > Features
Product description
Document type
User guide

Indigo200 transmitters have 2 configurable relays (relay A and relay B). Both relays have configuration options for selecting the parameter that is used to control the relay, activation triggers, hysteresis, and error state behavior.

Figure 1. Relay configuration options (CO2 probe example)
1
Relay output on/off: Set to ON to enable relay output.
2
Output parameter: The measurement that is used to control the relay. Options vary based on the type of the connected probe.
3
Activate above:

When the measurement value exceeds the value set here, the relay activates.

See the different relay activation options described in Figure 1.

4
Activate below:

When the measurement value falls below the value set here, the relay activates.

See the different relay activation options described in Figure 1.

5
Hysteresis: Define a buffer value for relay deactivation (set the value according to the parameter selected for the relay). With hysteresis, an activated relay switches off only when the measured value crosses the relay activation/deactivation limit and the additional buffer value.
6
Error output state: Select which state the relay is set to when an error occurs (on, off, or remains in its current state).

Relay state information

Figure 2. Relay icons on display (relay A active, relay B not active). When one or both relays are enabled, the relay state (active/not active) is shown on the transmitter display. You can also view the status of the relays with Insight PC software.