Thermostat TOA
Doc: 70-00-0851A V1.0, 20210716
© Vector Controls GmbH, Switzerland
Page 7 / 10
Subject to change without notice
www.vectorcontrols.com
Operation
The device is preconfigured according to the enclosed documentation. Settings such as switching on and switching off
temperature limits can be adjusted. The OPA-S operating/programming unit is used for configuration. This can also be
used to display the measured values (see section "TOA Configuration", page 8).
Thermostat function
OFF Limit > ON Limit (standard setting)
The following diagram shows the temperature-dependent
switching behavior of the TOA output voltage for the
standard OFF / ON setting of 35 °C / 30 °C (95 °F / 86 °F).
OFF Limit < ON Limit
The following diagram shows the temperature-dependent
switching behavior of the TOA output voltage for an OFF /
ON setting of 20 °C / 25 °C (68 °F / 77 °F).
Signal LED
The signal LED on the top of the housing indicates the operating status of the TOA.
LED
Status
Description
red
Output is off
The contact is opened = 0 V
green
Output is on
TOA-T101 output voltage = 24 V AC/DC
TOA-T102 output voltage = 230 VAC
green flashing
Device startup
TOA is starting up.
red flashing
(2 sec. cycle)
Sensor error
Temperature sensor is not connect or failed.
green red
repeated flashing
Output error
TOA output overloaded or short circuit at output.
dark
No power
Device has no power or is defect
TOA output
Signal LED
ON
LED green
OFF
LED red
T [°C]
30
35
Switching ON temperature
limit parameter IP 04
Switching OFF temperature
limit parameter IP 03
T [°F]
95
86
OFF Limit IP 03 > ON Limit IP 04
(standard setting)
TOA output
Signal LED
ON
LED green
OFF
LED red
T [°C]
20
25
Switching OFF temperature
limit parameter IP 03
Switching ON temperature
limit parameter IP 04
T [°F]
77
68
OFF Limit IP 03 < ON Limit IP 04
Signal LED
