AccuEnergy Acuvim II, User Manual

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5.1 IO Modules
5.1.1 The Purpose of IO Modules
The standard Acuvim II meter base does not have any built-in IO functions.
However, with the addition of the extended modules, multiple IO options can
be added. These functions include digital input, pulse counter, relay output,
analog output, analog input, etc.
There are three types of IO modules, AXM-IO1, AXM-IO2 and AXM-IO3.
Please note that a maximum of 3 modules may be attached to the meter. If a
communication module is used, it must be installed on the back of the meter
first before any IO modules are attached. No more than 2 of the same type IO
modules can be attached. According to the diference in communication with
Acuvim II meter, each type of IO module also has two modes, logic NO.1 and
logic NO.2. This means, two of each type of IO module can be linked to the
Acuvim II meter simutaneously (one being logic NO.1 and the other being logic
NO.2).
The AXM-IO1 module is composed of:
6 digital inputs (DI) -- Each digital input can be used to detect remote signals,
or be used as an input pulse counter. When it is used to detect remote signals,
it also can enable SOE(sequence of events), recording the event and time of the
event.
2 relay outputs (RO) -- Can be used for controlling or alarming. Each of the relay
outputs work in the same mode. When it operates in controlling mode, there
are two output options; latching and pulse. When it operates in alarm mode, it
has only one latching output mode.
24V isolated power supply -- Used as an auxiliary power supply for digital
inputs.
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