Instruction manual

2-22
Table 2.7 Symbols, Names and Functions of the Control Circuit Terminals (Continued)
Classifi-
cation
Symbol
Name
Functions
Digital input
[PLC]
Photocoupler
[CM]
<Control circuit>
[X1] t o [ X7],
[FWD], [REV]
+24 VDC
Programmable
logic controller
SOURCE
SINK
[PLC]
Photocoupler
[CM]
<Control circuit>
[X1] to [X7],
[FWD], [REV]
+24 VDC
Programmable
logic controller
SOURCE
SINK
(a) With the switch turned to SINK (b) With the switch turned to SOURCE
Figure 2.15 Circuit Configuration Using a PLC

For details about the slide switch setting, refer to Instruction manual for section 2.3.6 "Setting up the slide switches."
 For inputting a pulse train through the digital input terminal [X7]
• Inputting from a pulse generator with an open collector transistor output
Stray capacity on the wiring between the pulse generator and the inverter may disable transmission of the pulse
train. As a countermeasure against this problem, insert a pull-up resistor between the open collector output
signal (terminal [X7]) and the power source terminal (terminal [PLC]) if the switch selects the SINK mode input;
insert a pull-down resistor between the output signal and the digital common terminal (terminal [CM]) if the switch
selects the SOURCE mode input.
A recommended pull-up/down resistor is 1k 2 W. Check if the pulse train is correctly transmitted because stray
capacity is significantly affected by the wire types and wiring conditions.
Analog output
[FM1]
[FM2]
Analog
monitor
Both terminals output monitor signals for analog DC voltage (0 to +10 V) or analog DC current
(+4 to +20 mA). The output form (VO/IO) for each of [FM1] and [FM2] can be switched with the
slide switches on the control PCB and the function codes, as listed below.
Terminal
Terminal function is
specified by:
Output form
Content is
specified by:
Analog DC voltage
Analog DC current
[FM1]
Slide switch SW4
VO1
IO1
Function code
F31
Function code F29
0
1
[FM2]
Slide switch SW6
VO2
IO2
Function code
F35
Function code F32
0
1
The signal content can be selected from the following with function codes F31 and F35.
• Output frequency • Output current • Output voltage
• Output torque • Load factor • Input power
• PID feedback amount • Speed (PG feedback value) • DC link bus voltage
• Universal AO • Motor output • Calibration
• PID command • PID output
* Input impedance of the external device: Min. 5k (at 0 to 10 VDC output)
(While the terminal is outputting 0 to 10 VDC, it is capable of driving up to two analog
voltmeters with 10 k impedance.)
* Input impedance of the external device: Max. 500 (at 4 to 20 mA DC output)
* Adjustable range of the gain: 0 to 300%
[11]
Analog
common
Two common terminals for analog input and output signals.
These terminals are electrically isolated from terminals [CM] and [CMY].