IAI America ERC3 - Manual (Page 210)

Chapter 4 Operation
4.2 Operation in Positioner Mode
4.2.3 Operation in Positioner Mode 2 (Operation Using PIO Converter)
200
[5] Operation Ready and Auxiliary Signals
(1) Emergency stop status EMGS
Output
PIO signal
*EMGS
Common to Patterns
0 to 5
{
{ : Available, u: Unavailable
1) The emergency stop status EMGS is turned ON when in normal condition and turned OFF
when EMG(-) terminal on “3.3.3 Circuit Diagram” is 0V (emergency stop condition or
disconnected).
2) It turns back ON once the emergency stop condition is released and EMG(-) terminal goes
up to 24V DC.
Have an appropriate safety treatment such as interlock with this signal for the host
controller (PLC, etc.).
[Caution] EMGS is different from the emergency stop output caused by a controller alarm.
(2) Servo ON (SON, SV, PEND)
Input Output
PIO signal
SON SV PEND
Other than pattern 5 { { {
Pattern 5 { { u
{ : Available, u: Unavailable
1) Servo ON signal SON is the input signal making the servo motor of the actuator operable.
2) If the servo-on is performed to enable operation, the SV output signal is turned ON.
Concurrently positioning completion signal PEND is turned ON.
3) With the power being supplied, then controller cannot be operated while the SV signal
remains OFF. If the SON signal is turned OFF under operation of the actuator, the actuator
is decelerated and stopped with the maximam torque. After the stop, the servo OFF occurs
to enter the motor into the free running state.
For an actuator equipped with a brake, the brake gets to the operating condition.