SMAR HART FY500, Установка, эксплуатация и обслуживание

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Section 5
5.1
CONFIGURATION VIA HART ®
The positioners may be connected in a point-to-point type or multidrop network. In a point-to-point
connection, the equipment must be on "0". In a multidrop network, once the devices are recognized
by their addresses, the positioners should be configured with a network address between "1" and
"15”.
If the acknowledgement is via tag, the positioners addresses may be on "0" and keep controlling the
valve, even in a multidrop configuration.
NOTE
In case of a multidrop network configuration for classified areas, the entity parameters allowed
for the area must be strictly observed. Therefore, the following should be checked:
Ca
≥ Σ
Ci
j
+ Cc La
≥ Σ
Li
j
+ Lc
Voc
≤
min [Vmax
j
] Isc
≤
min [Imax
j
]
Where:
Ca, La = Allowed Capacitance and Inductance on the bus;
Ci
j
, Li
j
= Non -protected internal Capacitance/Inductance of positioner j (j = up to 15);
Cc , Lc = Cable capacitance and Inductance;
V
oc
= open circuit tension of the intrinsic safety barrier
I
sc
= short circuit current of the intrinsic safety barrier
Vmax
j
= Maximum allowable voltage to be applied to the positioner j;
Imax
j
= Maximum allowable current to be applied to the instrument j.
The FY500 Valve Positioner includes a wide variety of HART command functions that makes it
possible to access whatever functionality implemented on it. These commands work according to
the HART protocol specifications and are grouped as Universal Commands, Common Practice
Commands and Specific Commands.
For the user's safety the FY500 has two kinds of write protection in its memory, one hardware and
the other a software mechanism. The hardware is selected by a H-H switch with priority over the
software (See in the Section 4, Local Programming).
NOTE
The operation and use characteristics of each one of the configurators are in their specific
manual. Consult the configurator updates and their respective manuals on http://www.smar.com
or at their manufacturer.
Configuration Resources
By means of the HART ® configurator, the FY500 firmware allows the following configuration features
to be accessed; see below:
- Positioner Identification and Manufacturing Data;
- Remote Setpoint;
- Special valve characterization function according to a 16-point configurable curve;
- Flow characterization (Linear, Equal percentage and Quick opening);
- Monitoring of all device variables: position, setpoint, deviation and temperature;
- Positioner diagnostic, preventive maintenance, and failure determination;
- PID controller configuration;
- Device configuration;
- Device maintenance.
The configurator can be connected to the same pair of wires as the 4-20 mA signal, up to 2
kilometers away from the positioner.