Reset - Siemens 3RS2 Manual

• TEST: Device test in accordance with IEC 60079-17
– Yes
– No
• TEACH: Calibration of measuring circuits 1 and 2
Enables the adaptation of the settings for the values of the overshoot and undershoot
monitoring to the current values of the measured temperature. The setting ranges of the
values depend on the types of sensor selected. You must not exceed the measurement
ranges of the sensors in use.
Hysteresis (relative in each case to the currently measured sensor temperature):
– On temperature overshoot: ϑ2 = +5%; ϑ1 = +10%
– On temperature undershoot: ϑ2 = -5%; ϑ1 = -10%
– On temperature overshoot: ϑ1 = +10%; ϑ2 = -10 %
The measured value of the temperature measuring inputs T1/T4 is adopted as a template. If
the temperature measuring input T1 is inactive, the measured value of the temperature
measuring input T2 is adopted. If T1 and T2 are inactive, the measured value of the
temperature measuring input T3 is adopted.
5.10.4

Reset

Reset is only possible if the temperature does not exceed / fall below the set values including the
set hysteresis.
• Automatic reset: The corresponding relays are automatically reset
• Manual reset: Press the Back button → confirm with "yes" or "no"
• Remote reset via IO-Link (3RS2800): The outputs are reset via IO-Link using the "Reset"
control command (see Process image output (PIQ) and input (PII) (Page 102)).
• Remote reset via floating NO contact (Y1+) between Y1/Y2 (3RS2600)
A reset is carried out when the contacts Y1 and Y2 are closed by a short pulse (300 ms ... 2000
ms) using a NO contact.
A short circuit that lasts > 5 minutes generates an error message. If RESET between Y1/Y2 is
permanently closed, the error message 0xB703 is issued. The error can then only be
remedied by disconnecting the voltage at the terminal.
3RS2 temperature monitoring relay
Equipment Manual, 02/2022, A5E42462552002A/RS-AB/002
WARNING
Hazardous Voltage
The cables Y1/Y2 are connected directly to the supply voltage.
Digital devices
5.10 Operator control
43