eTR 101 Modbus

Room Temperature Control Unit

 

The Room Temperature Control Unit eTR 101 Modbus measures the room temperature and displays the current value. The target temperature can be changed using the + and - touch buttons. The eTR 101 Modbus is a Modbus slave with RS485 interface and RTU protocol. Modbus master, e.g. PC, SPS or MC, can read the measured values and other settings with ""Function 04h (read input registers)"" or with ""Function 06H (write single register)"" and ""Function 10H (write multiple registers)"" adjust, for example, the display of the setpoint or the basic setpoint shifts.

Models:

N° 30180 eTR 101 Modbus, signal white RAL 9003
N° 30181 eTR 101 Modbus, jet black RAL 9005


  • eTR 101 Modbus eTR 101 Modbus
  • eTR 101 Modbus, RAL 9003 signal white (30180) eTR 101 Modbus, RAL 9003 signal white (30180)
  • eTR 101 Modbus, RAL 9003 signal white (30180) eTR 101 Modbus, RAL 9003 signal white (30180)
  • eTR 101 Modbus, RAL 9003 signal white (30180) eTR 101 Modbus, RAL 9003 signal white (30180)
  • eTR 101 Modbus, RAL 9005 jet black (30181) eTR 101 Modbus, RAL 9005 jet black (30181)
  • eTR 101 Modbus, RAL 9005 jet black (30181) eTR 101 Modbus, RAL 9005 jet black (30181)
  • Temperature measurements.
  • Display of the current temperature or the setpoint and the basic setpoint shifts
  • 2 touch keys (+/-) for changing the target temperature or the basic setpoint shifts

General:

HousingPlastic, glass
Colour• similar to RAL 9003 signal white
• similar to RAL 9005 deep black
Assemblyon the wall or on device socket according to
DIN 49073
DimensionsHousing approx. 81.5 x 81.5 (W x H, mm),
Mounting depth approx. 12 mm
Weightapprox. 70 g
Ambient temperature0...+55°C
Ambient humidity0...95% RH, non-condensing
Storage temperature-25…+80°C

Modbus:

Operating voltage24 V ±10% SELV/PELV.
A suitable power pack can be
purchased from Elsner Elektronik.
ConnectionSpring-loaded terminals for
• rigid and flexible conductors 0.2 to 0.75 mm²
• flexible conductors with ferrules 0.25 to 0.34 mm²
Currentmax. 25 mA at 24 V DC
InterfaceRS485
ProtocolRTU
RS485 bus load1/8 unit load according to RS485 standard
RS485 driver powermin. 2.4 V at 54 Ohm bus load
(suitable for 32 standard RS485 unit loads)

Sensors:

Measurementrange 0...+55°C
Resolution0.1°C