ATR 621 - User manual 11
Shield/Schermo
For thermoresistances PT100
• For a three-wires connection use cables with
the same diameter.
• For a two-wires connection short-circuit termi-
nals 16 and 18.
• When shielded cable is used, it should be
grounded at one side only.
16
17
18
RED/ROSSO
WHITE/BIANCO
RED/ROSSO
Shield/Schermo
For linear signals Volt/mA
• Comply with plarity
• When shielded cable is used, it should be
grounded at one side only.
Examples of connection for linear input AI1
For linear signals 0….10V
• Comply with polarity
PRESSURE TRANSMITTER
For linear signals 0/4….20mA with three-wires
sensors
• Comply with polarity
C = Sensor output
B = Sensor ground
A = Sensor supply (12Vdc/25mA)
PRESSURE TRANSMITTER
SENSORE DI PRESSIONE
EXTERNAL SUPPLY
ALIMENTAZIONE ESTERNA
For linear signals 0/4..20mA with external power
supply for sensor
• Comply with polarity
C = Sensor output
B = Sensor ground
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