Mitsubishi Electric FR-A8AC User manual

INVERTER
Plug-in option
INSTRUCTION MANUAL
PRE-OPERATION INSTRUCTIONS 1
INSTALLATION AND WIRING 2
CONTACT INPUT 3
RELAY OUTPUT 4
FR-A8AC
120VAC contact input function
Relay output function

1
Thank you for choosing this Mitsubishi inverter plug-in option.
This Instruction Manual provides handling information and precautions for use of this product. Incorrect handling might cause an unexpected
fault. Before using this product, always read this Instruction Manual carefully to use this product correctly.
Please forward this Instruction Manual to the end user.
Electric Shock Prevention
Injury Prevention
Safety instructions
Do not attempt to install, operate, maintain or inspect the product until you have read through this Instruction Manual and appended
documents carefully and can use the equipment correctly. Do not use this product until you have a full knowledge of the equipment, safety
information and instructions. In this Instruction Manual, the safety instruction levels are classified into "Warning" and "Caution".
Incorrect handling may cause hazardous conditions, resulting in death or severe injury.
Incorrect handling may cause hazardous conditions, resulting in medium or slight injury, or may cause only material
damage.
The level may even lead to a serious consequence according to conditions. Both instruction levels must be followed
because these are important to personal safety.
Warning
While the inverter power is ON, do not open the front cover or the wiring cover. Do not run the inverter with the front cover or the wiring cover removed. Otherwise
you may access the exposed high voltage terminals or the charging part of the circuitry and get an electric shock.
Do not remove the inverter front cover even if the power supply is disconnected. The only exception for this would be when performing wiring and periodic
inspection. You may accidentally touch the charged inverter circuits and get an electric shock.
Before wiring or inspection, LED indication of the inverter unit operation panel must be switched OFF. Any person who is involved in wiring or inspection shall wait
for at least 10 minutes after the power supply has been switched OFF and check that there is no residual voltage using a tester or the like. For some time after the
power-OFF, a high voltage remains in the smoothing capacitor, and it is dangerous.
Any person who is involved in wiring or inspection of this equipment shall be fully competent to do the work.
The plug-in option must be installed before wiring. Otherwise you may get an electric shock or be injured.
Do not touch the plug-in option or handle the cables with wet hands. Otherwise you may get an electric shock.
Do not subject the cables to scratches, excessive stress, heavy loads or pinching. Otherwise you may get an electric shock.
Caution
The voltage applied to each terminal must be the ones specified in the Instruction Manual. Otherwise a burst, damage, etc. may occur.
The cables must be connected to the correct terminals. Otherwise a burst, damage, etc. may occur.
The polarity (+ and -) must be correct. Otherwise a burst or damage may occur.
While power is ON or for some time after power OFF, do not touch the inverter as it will be extremely hot. Touching these devices may cause a burn.
Warning
Caution
Caution

2
Additional Instructions
The following instructions must be also followed. If the product is handled incorrectly, it may cause unexpected fault, an injury, or an electric
shock.
Caution
Transportation and mounting
Do not install or operate the plug-in option if it is damaged or has parts missing.
Do not stand or rest heavy objects on the product.
The mounting orientation must be correct.
Foreign conductive objects must be prevented from entering the inverter. That includes screws and metal fragments or other flammable substance such as oil.
If halogen-based materials (fluorine, chlorine, bromine, iodine, etc.) infiltrate into a Mitsubishi product, the product will be damaged. Halogen-based materials are
often included in fumigant, which is used to sterilize or disinfest wooden packages. When packaging, prevent residual fumigant components from being infiltrated
into Mitsubishi products, or use an alternative sterilization or disinfection method (heat disinfection, etc.) for packaging. Sterilization of disinfection of wooden
package should also be performed before packaging the product.
Trial run
Before starting operation, each parameter must be confirmed and adjusted. A failure to do so may cause some machines to make unexpected motions.
Warning
Usage
Do not modify the equipment.
Do not perform parts removal which is not instructed in this manual. Doing so may lead to fault or damage of the product.
Caution
Usage
When parameter clear or all parameter clear is performed, the required parameters must be set again before starting operations. Because all parameters return to
their initial values.
Static electricity in your body must be discharged before you touch the product.
Maintenance, inspection and parts replacement
Do not carry out a megger (insulation resistance) test.
Disposal
The inverter must be treated as industrial waste.
General instruction
Many of the diagrams and drawings in this Instruction Manual show the inverter without a cover or partially open for explanation. Never operate the inverter in this
manner. The cover must be reinstalled and the instructions in the Instruction Manual must be followed when operating the inverter.

3
─CONTENTS ─
1 PRE-OPERATION INSTRUCTIONS 4
1.1 Unpacking and checking the product.......................................................................................................4
1.1.1 Product confirmation.......................................................................................................................................4
1.1.2 SERIAL number check ...................................................................................................................................5
1.2 Component names .....................................................................................................................................6
1.3 Specifications .............................................................................................................................................7
1.3.1 Input signal (X1 to X8) ....................................................................................................................................7
1.3.2 Output signal (1A, 1B, 1C, 2A, 2B, 2C) ..........................................................................................................7
2INSTALLATION 8
2.1 Pre-installation instructions ......................................................................................................................8
2.2 Installation procedure ................................................................................................................................8
2.3 Wiring ........................................................................................................................................................11
3 CONTACT INPUT 13
3.1 Internal block diagram .............................................................................................................................13
3.2 Terminals...................................................................................................................................................14
4 RELAY OUTPUT 15
4.1 Internal block diagram .............................................................................................................................15
4.2 Terminals...................................................................................................................................................16
4.3 Parameter list............................................................................................................................................16
4.4 Output signal setting................................................................................................................................17

PRE-OPERATION INSTRUCTIONS 4
1
1PRE-OPERATION INSTRUCTIONS
1.1 Unpacking and checking the product
Take the plug-in option out of the package, check the product name, and confirm that the product is as you ordered and intact.
The product is a plug-in option for the FR-A800 series.
1.1.1 Product confirmation
Check the enclosed items.
Plug-in option
................................................1
Mounting screw (M3 8 mm)
.........................2 (Refer to page 8.)
Spacer
....................2 (Refer to page 8.)

5PRE-OPERATION INSTRUCTIONS
1.1.2 SERIAL number check
The plug-in option is compatible with the inverter having the following SERIAL number or later.
Check the SERIAL number indicated on the inverter rating plate or package.
SERIAL number check
FR-A800 series
Rating plate example The SERIAL consists of one symbol, two characters indicating
the production year and month, and six characters indicating
the control number. The last digit of the production year is
indicated as the Year, and the Month is indicated by 1 to 9, X
(October), Y (November), or Z (December).
   
Symbol Year Month Control number
SERIAL
Type SERIAL number
FR-A820-00046(0.4K) to 04750(90K)
FR-A840-00023(0.4K) to 06830(280K)
FR-A842-07700(315K) to 12120(500K)
FR-A846-00023(0.4K) to 00470(18.5K)
49 

PRE-OPERATION INSTRUCTIONS 6
1
1.2 Component names
Symbol Name Description Refer to
page
a Mounting hole Fixes the option to the inverter with screws, or installs spacers. 8
b Terminal block Connect signal cables. 11
c Connector Connects to the option connector of the inverter. 8
Front view Rear view
(a) (c)
1A
1B
1C
CM
X1 X2 X3 X4 X5
(a)
(a)
(a)
(b)
2A
2B
2C
X6 X7
X8
CM

7PRE-OPERATION INSTRUCTIONS
1.3 Specifications
1.3.1 Input signal (X1 to X8)
• 120VAC (90 to 132VAC) contact input (eight terminals are provided)
• Cable length : max.30m
1.3.2 Output signal (1A, 1B, 1C, 2A, 2B, 2C)
• One changeover contact output (two relays are provided)
• Contact capacity
230 VAC...0.3 A
30 VDC...0.3 A
NOTE
• Use contacts within the rated capacity. Failure to do so may cause contacts to wear out quickly or to be welded.

INSTALLATION 8
2
2INSTALLATION
2.1 Pre-installation instructions
Check that the inverter's input power and the control circuit power are both OFF.
2.2 Installation procedure
Caution
With input power ON, do not install or remove the plug-in option. Otherwise, the inverter and plug-in option may be damaged.
To avoid damage due to static electricity, static electricity in your body must be discharged before you touch the product.
(1) Remove the inverter front cover. (Refer to Chapter 2 of
the Instruction Manual (Detailed) of the inverter for details
on how to remove the front cover.)
(2) For the two mounting holes (as shown in the next page)
that will not be tightened with mounting screws, insert
spacers.
(3) Fit the connector of the plug-in option to the guide of the
connector on the inverter unit side, and insert the plug-in
option as far as it goes.
(4) Fit the two locations, the left and right, of the plug-in
option securely to the inverter unit by screwing in the
supplied mounting screws. (tightening torque 0.33 N·m to
0.40 N·m) If the screw holes do not line up, the connector
may not be inserted deep enough. Check the connector.
Spacer
Spacer
Inverter side
option connector
Example of installation to connector 1

9INSTALLATION
Spacer
Spacer
Spacer
Mounting screw
Mounting screw
Mounting screw
Spacer
Spacer
Spacer
Mounting screw
Connector 1Connector 2
Connector 3
Insertion positions for screws and spacers

INSTALLATION 10
2
NOTE
• When mounting/removing the plug-in option, hold the sides of the option. Do not press on the parts on the circuit
board. Stress applied to the parts by pressing, etc. may cause a failure.
• Caution must be applied to mounting screws falling off when removing and mounting the plug-in option.
• Only one option can be used. When multiple options are mounted, priority is given to option connectors 1, 2 and 3 on
the inverter in this order, and options having a lower priority do not function.
• When the inverter cannot recognize that the option unit is mounted due to improper installation, etc., the protective
function (E.1 to E.3) is activated. A different indication will appear according to the mounted position (option connector
1 to 3).
• When removing the plug-in option, remove the two screws on the left and right, then pull it straight out. Pressure
applied to the connector and to the option board may break the option.
Mounted position Fault indication
Option connector 1
Option connector 2
Option connector 3

11 INSTALLATION AND WIRING
2.3 Wiring
(1) Untwist the shielded twisted pair cables after stripping its sheath.
Also, perform protective treatment of the shield to ensure that it will not make contact with
the conductive area.
Strip off the sheath for the below length. If the length of the sheath pealed is too long, a short
circuit may occur with neighboring wires. If the length is too short, wires might come off.
Wire the stripped cable after twisting it to prevent it from becoming loose.(Do not solder it.)
Use a bar type terminal as required.
NOTE
• Ferrule terminals commercially available (as of February 2012. The product may be changed without notice.)
When using the ferrule terminal (without insulation
sleeve), take caution that the twisted wires do not come
out.
Cable sheath stripping length
Terminal
screw size
Cable gauge
(mm2)
Ferrule terminal model
Manufacturer Crimping tool
name
With
insulation sleeve
Without
insulation sleeve
M2 0.3, 0.5 AI 0,5-6WH AI 0,5-6 Phoenix Contact
Co., Ltd. CRIMPFOX 6
Sheath
Shield
(perform protective treatment)
Shielded twisted
pair cable
5mm

INSTALLATION AND WIRING 12
2
(2) Loosen the terminal screw and insert the cable into the terminal.
NOTE
• Undertightening can cause cable disconnection or malfunction. Overtightening can cause a short circuit or malfunction
due to damage to the screw or unit.
• Use a screwdriver with a diameter of 1.6 mm or less. To avoid contact with the relay, put the screwdriver upright
relative to the terminal screw surface. Otherwise, the relay or the terminal block may be damaged by the screwdriver
because of the limited space between the terminal block and the relay.
Terminal
screw size Tightening torque Cable size Screwdriver
M2 0.22N.m to 0.25N.m 0.3mm2to 0.75mm2Small flat-blade screwdriver
(Tip thickness: 0.4mm/tip width: 2.5mm )
Avoid contact with
the relay.
Keep the screwdriver upright relative to
the terminal screw surface while rotating the
screwdriver.
1.6 mm or less
Terminal block
Relay
Connector

13 CONTACT INPUT
3CONTACT INPUT
3.1 Internal block diagram
Instead of 24VDC signals for contact input terminals of the inverter control circuit terminal block, 120VAC signals can be
applied to FR-A8AC contact input terminals.
The following figure is the internal block diagram of the FR-A8AC.
Controller X7 Connector
X1
X8
CM
CM

CONTACT INPUT 14
3
3.2 Terminals
When the FR-A8AC is installed, STF, STR, RL, RM, RH, RT, CS, MRS of the inverter control terminal block are invalid and the
FR-A8AC input terminal (X1 to X8) is valid. (STF signal is assigned to X1 and STR signal to X2 only.)
For the details of Pr.178 to Pr. 189, refer to the Instruction Manual (Detailed) of the inverter.
Terminal symbol Description
X1, X2, X3, X4, X5, X6, X7, X8 120VAC Input signals
CM Common terminal to X1-X8
Pr. 178 179 180 181 182 183 (184) (185) 186 187 (188) (189)
Valid
terminal
A8AC
is not
fitted.
STF STR RL RM RH RT (AU) (JOG) CS MRS (STOP) (RES)
A8AC
is
fitted.
X1 X2 X3 X4 X5 X6 (AU) (JOG) X7 X8 (STOP) (RES)
CM
X1
X2
X3
X4
X5
X6
X7
X8
CM

15 RELAY OUTPUT
4RELAY OUTPUT
4.1 Internal block diagram
Two signals can be selected among inverter's standard signals (RUN, SU, FU, etc.) to be output as relay contact (1C) signals.
The following figure is the internal block diagram of the FR-A8AC.
1C
ControllerConnector
RA1 1B
1A
2C
RA2 2B
2A

RELAY OUTPUT 16 4
4.2 Terminals
The operation of each relay depends on the output signal selected.
4.3 Parameter list
When the FR-A8AC is mounted on the inverter, the following parameters are extended.
Perform the settings as required.
NOTE
• When both the FR-A8AC and FR-A8AR are installed, the FR-A8AR function is invalid.
Terminal symbol Description
1A Normally open contact terminal of relay RA1
1B Normally closed contact terminal of relay RA1
1C Common contact terminal for relay RA1
2A Normally open contact terminal of relay RA2
2B Normally closed contact terminal of relay RA2
2C Common contact terminal for relay RA2
Pr. Pr. group Name Initial value Setting range
320 M420 RA1 output selection 0 Refer to Pr.190 to Pr.196 in the Instruction Manual
(Detailed) of the inverter. Only the positive logic can be
set.
321 M421 RA2 output selection 1
418 M432 Extension output terminal
filter 9999 5 to 50 ms, 9999
1A
1B
1C
2A
2B
2C

17 RELAY OUTPUT
4.4 Output signal setting
Setting output signals
Use Pr.320 and Pr.321 to assign signals to the terminals ABC (1, 2). The settings of Pr.320 and Pr.321 are the same as those
of Pr.190 to Pr.196 (output terminal function selection). For the details of Pr.190 to Pr.196, refer to the Instruction Manual
(Detailed) of the inverter.
NOTE
• When the protective function (E.1 to E.3) is activated, all the outputs are shut off.
• Negative logic cannot be set.
Adjusting the output terminal response level (Pr.418)
• The response level of the output terminals can be delayed in a range of 5 to 50 ms. (Operation example for the RUN signal.)
NOTE
• The response level is not adjusted while Pr.418 = "9999".
•WhenPr.157 OL signal output timer is set for the Overload warning (OL) signal output, the OL signal is output when
the set time of (Pr.157 + Pr.418) elapses.
Time
RUN
Pr.418 = 9999
ON OFF
RUN
Pr.418 ≠ 9999
ON OFF
Pr.418 Pr.418
Output frequency

18
REVISIONS
*The manual number is given on the bottom left of the back cover.
Print date *Manual number Revision
Sep. 2014 IB(NA)-0600559ENG-A First edition

INVERTER
HEAD OFFICE: TOKYO BUILDING 2-7-3, MARUNOUCHI, CHIYODA-KU, TOKYO 100-8310, JAPAN
IB(NA)-0600559ENG-A(1409) MEE Printed in Japan Specifications subject to change without notice.