5. Terminal Allocation
Table 5-1 Terminal Specifications
Terminal size
M2
Tightening torque (N
·
m)
0.19
±10%
Recommended wire size *
AWG22 – 24
Stripped wire length (mm)
Input terminals
Output terminals
5
* An insulated wire with allowable
temperature of 105
C (UL compliant
product) is recommended.
Fig. 5-1 Connection Terminal Allocation Drawing
6. Terminal Functions
Table 6-1 shows a list of terminal functions.
Table 6-1 Terminal Function List
Terminal
symbol
Terminal name
Terminal function description
I1 - I13
Digital input 1 to 13
(1) Frequency can be set with a setting method for all frequencies set with
function code o20. In this case, terminal I13 is a hold input signal.
Furthermore, frequency settings can be given polarity with o19.
Refer to the respective inverter user's manuals for details.
(2) These terminals can be used as general-purpose input terminals
(inverter unit X terminal or equivalent).
Functions can be selected from o101 to o113. Assign input signals
requiring responsiveness to the inverter unit side X terminal.
(3) SW11 can be used to switch between the SINK and SOURCE
methods.
The minimum permissible variation width of input terminal signals is 2
[ms] or higher.
M1
External power supply input
This is a power supply terminal used for external power supplies (+22 to
+27 VDC).
CM Digital
common
This is a common terminal for digital input signals.
It has the same electric potential as inverter unit terminal CM .
O1 - O8
Transistor output 1 to 8
(1) All types of monitor data (output frequency, output current, etc)
set with function code o21 can be output as 8-bit binary output signals.
(2) When function code o21 is set to 99, all output terminals can be used
as general-purpose output terminals (inverter unit Y terminal or
equivalent).
Functions can be selected from o01 to o08.
Refer to the respective inverter user's manuals for details.
Assign output signals requiring responsiveness to the inverter unit side
Y terminal.
M2
Transistor output common
This is a common terminal for transistor output signals.
Inverter unit terminals CM, 11, and CMY are insulated.
7. Option Communication Error (
er4
)
This error occurs when a communication error occurs between the digital I/O card and inverter unit.
Cause
Check and countermeasure
(1) There is a problem with the
connection between the digital I/O
card and inverter unit.
Check whether the option connection cable between the
digital I/O card and inverter unit is connected properly, and
ensure that the cable fits securely into the adapter
connector.
→
Connect the option connection cable properly.
Insert securely into the adapter connector.
(2) Influenced by strong noise from
surroundings
Check noise countermeasures (connection status, signal
wire and communication cable/main circuit wiring
installation, etc.)
→
Improve noise countermeasures.
Note: There may also be a problem with the connection between the digital I/O card and inverter
unit (
er4
does not appear) when the code for function code o (option function) does not
appear.
In this case also, check whether the option connection cable is connected properly.
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