IAI ERC3, Instruction Manual

Page: 129 / 188

Chapter 3 Operation
3.6 I/O Signal Controls and Function
121
3.6 I/O Signal Controls and Function
This section explains the signals used in modes other than Remote I/O Mode. For the I/O
signals for the Remote I/O Mode refer to the instruction manual for the ERC3 actuator with
integrated contoroller.
The applicable bit is “1” when the signal is ON and “0” when it is OFF.
(1) Controller ready (CRDY) PLC Input Signal
When the ERC3 can control the system after the power is supplied, it is turned “ON”.
■ Function
Regardless of the alarm or servo conditions, when the ERC3 initialization is completed
normally after the power is supplied and the controller can control the system, it is turned “ON”.
Even in the alarm condition, when the ERC3 can control the system, it is turned “ON”.
(2) Emergency stop (EMGS) PLC Input Signal
When the ERC3 is stopped in an emergency, it is turned “ON”.
■ Function
When the controller is stopped in an emergency (motor driving power is cut off), it is turned
“ON”. When the emergency stop status is cleared, it is turned “OFF”.
(3) Alarm (ALM) PLC Input Signal
When any error is detected using the controller protection circuit (function), it is turned “ON”.
■ Function
When any error is detected and the protection circuit (function) is activated, this signal is turned
“ON”.
When the cause of the alarm is eliminated and the reset (RES) signal is turned “ON”, the alarm
is turned “OFF” in the case that it is the alarm with the operation cancellation level. (In the case
of the alarm with the cold start level, cycling the power is required.)
(4) Reset (RES) PLC Output Signal
This signal has two functions. It can reset the ERC3 alarm and cancel the reminder for planned
movements during pause conditions.
■ Function
1) When this signal is turned ON from OFF condition after eliminating the cause of the alarm
during the alarm output, the alarm (ALM) signal can be reset. (In the case of the alarm with
the cold start level, cycling the power is required.)
2) When this signal is turned ON from OFF condition during the pause condition, the reminder
of the planned movement left can be cancelled.
ME0302-4A