Modules With Hart® Protocol - AOIP CALYS 150 Mode D'emploi

Modules With HART® Protocol
The HART® protocol (Highway-Addressable Remote Transducer) is a communications protocol over a direct current loop
(0-20 or 4-20mA). This protocol is used to without interfering with current measurement to both read measurements carried
out by the HART® transmitter and transmitter-related information (brand, reference, etc..), and also to adjust it.
The CALYS 150 with related HART® module (ACL500) is used to carry out all of these operations.
To use the CALYS 150 in HART mode, the unit must be connected to the current loop (across 24 V Out terminals from
channel V1) and be provided with the specific ACL500 modem (connected to the unit's side).
The calibrator provides the loop power supply via an internal 250Ω series resistor.
When an external loop power supply is used, a resistor from 230 Ω to 270 Ω must be series connected with the external
loop power supply and transmitter.
Probe
connection
4-20 mA link with loop power
supply and HART® resistor ON.
To configure the CALYS 150 in this mode, "HART" function must be selected from "Menu":
Measurement on channel V1
HART® Transmitter
Connexion modem
HART®
NTA47224-300A9
B
Modem HART®
AOIP ACL500
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