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Using Intelligent Input Terminals
Terminals [1], [2], [3], [4], [5], [6] and [7] are identical, programmable inputs for general use.
The input circuits can use the inverter's internal (isolated) +24V field supply or an external
power supply. This section describes input circuits operation and how to connect them
properly to switches or transistor outputs on field devices.
The WJ200 inverter features selectable sinking or sourcing inputs. These terms refer to the
connection to the external switching device–it either sinks current (from the input to GND)
or sources current (from a power source) into the input. Note that the sink/source naming
convention may be different in your particular country or industry. In any case, just follow
the wiring diagrams in this section for your application.
The inverter has a short bar (jumper) for
configuring the choice of sinking or sourcing
inputs. To access it, you must remove the
front cover of the inverter housing. In the
figure to the top right, the short bar is shown
as attached to the logic terminal block
(connector). If you need to change to the
source type connection, remove the short bar
and connect it as shown in the figure at the
bottom right.
CAUTION: Be sure to turn OFF power to the inverter before changing the short circuit bar
position. Otherwise, damage to the inverter circuitry may occur.
[PLC] Terminal Wiring – The [PLC]
terminal (Programmable Logic Control
terminal) is named to include various
devices that can connect to the inverter's
logic inputs. In the figure to the right, note
the [PLC] terminal and the short bar
(jumper). Locating the short bar between
[PLC] and [L] sets the input logic source
type, which is the default setting for EU
and US versions. In this case, you
connect input terminal to [P24] to make it
active. If instead you locate the short bar
between [PLC] and [P24], the input logic
will be sink type. In this case, you
connect the input terminal to [L] to make
it active.
The wiring diagram on the following pages show the four combinations of using sourcing or
sinking inputs, and using the internal or an external DC supply.
7
6
5
Sink logic connection
7
6
5
Source logic connection
Short bar for
sink logic
P24
PLC
1
7
L
Short bar for
source logic
21
Logic inputs
L PLC P24
4
3
2
1
Short bar
4
3
2
1
L PLC P24
Short bar
WJ200 inverter
Input common
+
-
Input
circuits
Logic GND
24V
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