Instructions

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Differential measurement:
In this case, only the temperature difference is controlled (e.g. forward/backward flow of a heater), meaning there is no TARGET temperature.
Once the difference (T2-T1) exceeds the MAX value, the output „TMP1“ activates; if the difference (T2-T1) undercuts the MIN value, the output
„TMP2“ activates. „TMP1“ and „TMP2“ are switched off once the temperature difference is again within the MIN and MAX range. „TMP3“ and
„TMP4“ are not switched.
Example:
Input „Min = 20 °C“ means that the output „TMP2“ is activated if there is a difference of less/equal to 20 °C between the sensor „T2“ and „T1“.
Input „Max = 50 °C“ means that the output „TMP1“ is activated if there is a difference of more/equal to 50 °C between the sensor „T2“ and „T1“.
If a temperature of +65 °C is measured at sensor T2 and +15 °C at sensor T1, the output „TMP1“ switches on.
If a temperature of +65 °C is measured at sensor T2 and +45 °C at sensor T1, the output „TMP2“ switches on.
Between the two corner values +15 to +45 °C, the outputs „TMP1“ and „TMP2“ remain inactive.
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Difference measurement means that the outputs „TMP3“ and „TMP4“ are not switched.
This temperature control can additionally return a message: When exceeding the MAX temperature or undercutting the MIN temperature, the
GSM module can return an automatically generated SMS of an email with the message text „ALARM TEMP“.
Important!
Generally, the GSM module only indicates changes that persist for at least one second or undercut/exceed the threshold value.
If you have sent a new configuration to the GSM module, the GSM module will restart automatically. The GSM module takes only one
minute after restart before it can perform any changes to the sensors or commands. This waiting time must be strictly observed! You
have about one minute after restart to apply a voltage without sending a text message and/or email.
To verify the temperature outputs, proceed as follows:
Apply direct voltage between 1 and 2 V (e.g. a 1.5 V dry battery) to input „T1“.
Never apply any voltage exceeding 2 V!
Observe correct polarity. Connect the battery’s minus pole to the
right terminal „-“ and the plus pole to the middle terminal „T1“.
• The control software status window must display a temperature in excess of 50 °C and the message „SMS sent“ must appear; the message
text „Alarm Temp1 = xxC“ must be sent to the mobile phone by SMS.
• Choose the features applicable for your configuration in the control software under „4 temperature outputs“.
• Determine who is to be informed how in case of a message as described in the previous examples (e.g. „output INCALL“).
• Send the new configuration to the GSM module by clicking the button „Send“.
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To control devices (e.g. a ventilator), connect the respective temperature outputs of the GSM module to the external devices. For this,
connect the temperature outputs under your own discretion (observe permissible operating voltages, see „Technical Data“) or install
additional relays (Conrad item no. 502892) or relay PCBs (Conrad item no. 585498). Also observe the notes in these operating
instructions, chapter 14 „Temperature Inputs T1 and T2“.
If only a single temperature sensor is connected, this sensor must be connected to input „T1“. If two temperature sensors are connected,
the threshold value excesses of „T1“ and „T2“ are indicated by SMS.