Field Device Power Control - GE Masoneilan VECTOR V1100 Instruction Manual

Loop Powered
Direct Powered – Max
Bandwidth
Direct Powered – Power
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Direct Powered - External
Battery

Field Device Power Control

When used in a direct power configuration, the VECTOR V1100 can activate a switchable
terminating resistor between the HART and the RETURN signal wires. This can eliminate the
need for an external terminating resistor in some installations and also allows for the field
device power to be switchable and controlled automatically by the VECTOR V1100.
The parameter Field Device Power Control can be set to three different states:
Off
On
Switching
The value shown in Wireless HART Packets per second column is
NOTE
the value reported back in HART Command 777.
This allows for different StepVolt settings to be selected when
operating in a loop powered mode.
This allows for the maximum wireless HART bandwidth possible
and assumes that the direct power source can supply maximum
power.
This assumes that the direct power source is limited and limits the
amount of wireless HART packets to a small amount to conserve
power.
This assumes that the direct power source is an external battery,
and this enables the built-in battery management functionality
(battery life calculations, battery alerts) in the VECTOR V1100.
The VECTOR V1100 powers up and begins to operate with any
CAUTION
valid power installation, regardless of what the configured
Adapter Power setting. This allows you to change this setting
even if it is configured incorrectly, however, perform any
changes to this before the VECTOR V1100 has joined the
wireless HART network. If this power setting is set different than
how the VECTOR V1100 is actually powered (such as a Direct
Powered setting is selected but the unit is actually loop
powered), the system operation is not guaranteed and it is
possible that the VECTOR V1100 resets due to insufficient power
once connected to the wireless HART network.
The unit can be both Direct Powered and wired in series with the
loop. When configured in any of the Direct Powered modes,
there is an insertion voltage drop of 1.0 V if the VECTOR V1100 is
also wired in series with the loop.
The Field Device Power Control switch is never connected.
The Field Device Power Control switch is always connected.
The VECTOR V1100 automatically controls the operation of the
Field Device Power Control switch.
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