1.7 Inputs and Outputs
The nominal current and voltage values of the measuring inputs on the P631 can
be set with the function parameters.
The nominal voltage range of the optical coupler inputs is 24 to 250 V DC. As an
option binary signal input modules with a higher operate threshold are available.
The auxiliary voltage input for the power supply is also designed for an extended
range. The nominal voltage ranges are 60 to 250 V DC and 100 to 230 V AC. A 24
to 60 V DC version is also available.
All output relays can be utilized for signaling and command purposes.
The optional PT 100 input is lead-compensated, balanced and linearized for
PT 100 resistance thermometers as per IEC 751 / DIN EN 60751.
The optional 0 to 20 mA input provides open-circuit and overload monitoring,
zero suppression defined by a setting, plus the option of linearizing the input
variable via 20 adjustable interpolation points.
Two selectable measured values (cyclically updated measured operating data
and stored measured fault data) can be output as a burden-independent direct
current via the two optional 0 to 20 mA outputs. The characteristics are defined
via 3 adjustable interpolation points allowing a minimum output current (4 mA,
for example) for slave-side open-circuit monitoring, knee-point definition for fine
scaling, and a limitation to lower nominal currents (10 mA, for example). Where
sufficient output relays are available, a selectable measured value can be output
in BCD-coded form by contacts.
P631
1 Application and Scope
1-10 P631/EN M/R-11-C // P631-310-650
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