Chapter 3 Operation
3.6 I/O Signal Controls and Function
122
(5) Servo ON command (SON) PLC Output Signal
Operation ready (SV)
PLC Input Signal
When the SON signal is turned ON, the servo will turn ON.
When the servo-motor is turned ON, the Status Indicator LED (SYS*) on the front surface of the
controller illuminates in green.
The “SV” signal is synchronized with this LED.
■ Function
Using the “SON” signal, the turning ON/OFF of the ERC3 is available.
While the “SV” signal is ON, the ERC3's servo-motor is turned “ON” and the operation
becomes available.
The relationship between the “SON” signal and “SV” signal is as follows.
(PLC → ERC3)
SON
SV
(ERC3 → PLC)
(6) Home return (HOME)
PLC Output Signal
Home return completion (HEND) PLC Input Signal
When the “HOME” signal is turned “ON”, this command is processed at the startup (ON edge),
and the homing operation is performed automatically.
When the home return is completed, the HEND signal is turned “ON”.
Once the “HEND” signal is turned “ON”, it can not be turned “OFF” until the power is turned
“OFF” or the “HOME” signal is input again.
Even after the completion of the homing operation, when the “HOME” signal is turned “ON”, the
homing operation can be performed.
HOME
(PLC → ERC3)
HEND
(ERC3 → PLC)
PEND
(ERC3 → PLC)
MOVE
(ERC3 → PLC)
Actuator Operation
Mechanical end
Stop at the Home Position
Caution: In the Position 1/Simplified Direct Value Mode, when the positioning command is
issued without performing the homing operation after the power is supplied, the
positioning is performed after the automatic homing operation.
Exercise caution that in the direct numeric specification mode, issuing a positioning
command to a given position following the power ON, without performing a home
return first, will generate an alarm “Error Code 83: ALARM HOME ABS (absolute
position move command when home return is not yet completed)” (operation-reset
alarm).
ME0302-4A
Summary of Contents for ERC3
Page 1: ...IAI Corporation ERC3 Gateway Unit Instruction Manual Forth Edition ...
Page 2: ......
Page 4: ...ME0302 4A ...
Page 8: ...ME0302 4A ...
Page 35: ...Chapter 1 Specifications Check 1 6 Option 27 1 6 Option はケーブル長 ME0302 4A ...
Page 54: ...Chapter 2 Wiring 2 3 Wiring Method 46 ME0302 4A ...
Page 158: ...Chapter 3 Operation 3 8 Field Network LED Indication 150 ME0302 4A ...
Page 160: ...Chapter 4 I O Parameter 152 ME0302 4A ...
Page 176: ...Chapter 5 Troubleshooting 5 4 Alarm List 168 ME0302 4A ...
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