Satec expertmeter EM720, Руководство по эксплуатации

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Chapter 5 Configuring the EM720 General Meter Setup
82 EM720 Power Quality and Revenue Meter
Configuring Digital Inputs
The EM720 has four embedded digital inputs (DI1 to DI4)
and supports up to two expansion 2DI/2DO modules with a
total of 4 digital inputs (DI5 to DI8). I/O numbers are
automatically assigned to the inputs in the order of
connection. If you insert an I/O module into another slot
position and do not change its order, then all digital inputs on
the module retain their I/O numbers.
To configure the digital inputs in your meter, select General
Setup from the Meter Setup menu, and then click on the
Digital Inputs tab. Digital inputs that are not present in your
meter are not shown.
The available options are shown in the following table.
Parameter Options Default Description
Pulse input mode PULSE MODE
KYZ MODE
PULSE
MODE Pulse mode: either leading, or trailing
edge of the input pulse is recognized as
an event.
KYZ mode: both leading and trailing
edges of the input pulse are recognized
as separate events.
Pulse polarity NORMAL (N.O.)
INVERTING
(N.C.)
NORMAL Normal polarity: the open to closed
transition is considered a pulse.
Inverting polarity: the closed to open
transition is considered a pulse. It has no
meaning in KYZ mode where both
transitions are effective.